COLUMBIA GAS SYSTEM INC
8-K, 1995-04-20
NATURAL GAS TRANSMISISON & DISTRIBUTION
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<PAGE>   1





                                    FORM 8-K
                                    --------



                       SECURITIES AND EXCHANGE COMMISSION

                            Washington, D.C.  20549



                                 CURRENT REPORT
                                 --------------



                        Pursuant to Section 13 or 15(d)
                     of the Securities Exchange Act of 1934



Date of Report (date of earliest event Reported) April 20, 1995
                                                 --------------




                         THE COLUMBIA GAS SYSTEM, INC.
                         -----------------------------
             (Exact name of registrant as specified in its charter)


<TABLE>
<S>                                 <C>             <C>
          Delaware                    1-1098            13--1594808    
- ----------------------------        -----------     -------------------
(State of other jurisdiction        (Commission       (IRS Employer
      of incorporation)             File Number)    Identification No.)
</TABLE>


                20 Montchanin Road, Wilmington, Delaware  19807
                -----------------------------------------------
                    (Address of principal executive offices)


Registrant's telephone number, including area code (302) 429-5000
                                                   --------------

<PAGE>   2
Item 5.  Other Events

         The following information concerning material filed with the United
States Bankruptcy Court for the District of Delaware on April 17, 1995, is
provided:

         Plan of Reorganization of The Columbia Gas System, Inc., dated April
         17, 1995

         Disclosure Statement pursuant to Section 1125 of the Bankruptcy
         Code for the Plan of Reorganization of The Columbia Gas System, Inc.,
         dated April 17, 1995

         Amended Plan of Reorganization of Columbia Gas Transmission
         Corporation dated April 17, 1995

         Disclosure Statement pursuant to Section 1125 of the Bankruptcy Code
         for the Amended Plan of Reorganization of Columbia Gas Transmission
         Corporation dated April 17, 1995
<PAGE>   3


                                   SIGNATURE


                 Pursuant to the requirements of the Securities Exchange Act of
1934, the Registrant has duly caused this report to be signed on its behalf by
the undersigned hereunto duly authorized.



                                             The Columbia Gas System, Inc.
                                             -----------------------------
                                                      (Registrant)




                                             By     /s/ R. E. Lowe        
                                               ---------------------------
                                                        R.E. Lowe
                                                        Vice President and
                                                        Controller

Date:  April 20, 1995
<PAGE>   4
                        UNITED STATES BANKRUPTCY COURT
                         FOR THE DISTRICT OF DELAWARE
                                      
- ----------------------------------X
IN RE:                            :  CHAPTER 11
                                  :  CASE NO. 91-803 (HSB)
THE COLUMBIA GAS SYSTEM, INC.     :
                                  :
                   DEBTOR.        :
- ----------------------------------X


                          PLAN OF REORGANIZATION OF
                        THE COLUMBIA GAS SYSTEM, INC.

                                  RESPECTFULLY SUBMITTED,

                                  STROOCK & STROOCK & LAVAN
                                  LEWIS KRUGER
                                  ROBIN E. KELLER
                                  SEVEN HANOVER SQUARE
                                  NEW YORK, NEW YORK  10004-2696
                                  (212) 806-5400

                                  CRAVATH, SWAINE & MOORE
                                  JOHN F. HUNT
                                  JOHN E. BEERBOWER
                                  825 EIGHTH AVENUE
                                  NEW YORK, NEW YORK  10019-7475
                                  (212) 474-1000

                                  YOUNG, CONAWAY, STARGATT & TAYLOR
                                  JAMES L. PATTON, JR.
                                  11TH FLOOR - RODNEY SQUARE NORTH
                                  P.O. BOX 391
                                  WILMINGTON, DELAWARE  19899-0391
                                  (302) 571-6600

                                  CO-COUNSEL FOR
                                  THE COLUMBIA GAS SYSTEM, INC.



DATED:  APRIL 17, 1995
<PAGE>   5
                                                          TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                                                        Page
<S>                                                                                                                    <C>
INTRODUCTION  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -1-
                                                                                                                     
I.       DEFINED TERMS, RULES OF INTERPRETATION,                                                                     
         COMPUTATION OF TIME AND GOVERNING LAW  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -2-
         A.      Defined Terms  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -2-
                 1.       "Administrative Claim"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -2-
                 2.       "Administrative Fee Order"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -2-
                 3.       "Allowed" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -2-
                 4.       "Assumed Executory Contract Claim"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -3-
                 5.       "Auction Notes" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -3-
                 6.       "Avoidance Claim" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -3-
                 7.       "Bank Agent"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -3-
                 8.       "Bankruptcy Code" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -3-
                 9.       "Bankruptcy Court"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -3-
                 10.      "Bankruptcy Rules"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -3-
                 11.      "Bar Date"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -4-
                 12.      "Bar Date Order"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -4-
                 13.      "Bid Notes" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -4-
                 14.      "Borrowed Money Claim"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -4-
                 15.      "Borrowed Money Instruments"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -5-
                 16.      "Business Day"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -5-
                 17.      "Calendar Quarter"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -5-
                 18.      "Canada Sale Agreement" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -5-
                 19.      "Cash Collateral Orders"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -5-
                 20.      "Cash Consideration"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -6-
                 21.      "Claim" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -6-
                 22.      "Class" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -6-
                 23.      "Columbia"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -6-
                 24.      "Columbia Canada" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -6-
                 25.      "Columbia Common Stock" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -7-
                 26.      "Columbia Customer Guaranty"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -7-
                 27.      "Columbia Omnibus Settlement" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -8-
                 28.      "Columbia Secured Claim"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -9-
                 29.      "Commercial Paper"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -10-
                 30.      "Completed" or "Completion" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -10-
                 31.      "Complying Class 4 Claimant"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -10-
                 32.      "Confirmation"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -10-
                 33.      "Confirmation Date" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -10-
                 34.      "Confirmation Order"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -10-
                 35.      "Contributors"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -10-
                 36.      "Creditor"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -11-
                 37.      "Creditors' Committee"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -11-
                 38.      "Customer Settlement Proposal"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -11-
                 39.      "D&O Insurance" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -11-
                 40.      "Debentures"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -11-
                 41.      "DECS"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -11-
                 42.      "Deficiency Claim"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -11-
                 43.      "Derivative Actions"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -12-
</TABLE>

                                      (i)
<PAGE>   6
<TABLE>
<CAPTION>
<S>                                                                                                                    <C>
                 44.      "DIP Facility"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -12-
                 45.      "DIP Facility Claim"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -12-
                 46.      "Disbursing Agent"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -12-
                 47.      "Disbursing Agent Agreement"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -12-
                 48.      "Disclosure Statement"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -12-
                 49.      "Disputed"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -13-
                 50.      "Effective Date"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -13-
                 51.      "Equity Committee"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -13-
                 52.      "Estate"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -13-
                 53.      "Fee Examiner"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -13-
                 54.      "FERC"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -13-
                 55.      "FERC Gas Tariff" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -13-
                 56.      "File" or "Filed" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -14-
                 57.      "Final Order" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -14-
                 58.      "First Mortgage Bonds"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -14-
                 59.      "$500 Million Credit Agreement" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -15-
                 60.      "Holder"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -15-
                 61.      "Indenture Trustee" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -15-
                 62.      "Intercompany Claims" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -15-
                 63.      "Intercompany Claims Litigation"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -15-
                 64.      "Interests" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -16-
                 65.      "Inventory Loan Agreements" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -16-
                 66.      "IRS Order" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -16-
                 67.      "IRS Settlement Agreement"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -16-
                 68.      "Issue" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -16-
                 69.      "Kotaneelee Escrow" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -16-
                 70.      "LESOP" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -16-
                 71.      "LESOP Debentures"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -17-
                 72.      "LESOP Guaranty"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -17-
                 73.      "LESOP Indenture" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -17-
                 74.      "LESOP Indenture Trustee" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -17-
                 75.      "LESOP Registrar" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -17-
                 76.      "LESOP Trust" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -17-
                 77.      "LESOP Trustee" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -17-
                 78.      "Liquidation Value" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -17-
                 79.      "Maximum Offer Amount"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -18-
                 80.      "Maximum Proof of Claim Amount" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -18-
                 81.      "Medium Term Notes" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -18-
                 82.      "Miscellaneous Administrative Claim"  . . . . . . . . . . . . . . . . . . . . . . . . . . .  -18-
                 83.      "New Indenture" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -18-
                 84.      "New Indenture Trustee" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -18-
                 85.      "New Indenture Securities"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -18-
                 86.      "1961 Indenture"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -18-
                 87.      "Non-Borrowed Money Claim"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -19-
                 88.      "Offer of Settlement" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -19-
                 89.      "Omnibus Orders"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -19-
                 90.      "PBGC"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -19-
                 91.      "Person"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -19-
                 92.      "Petition Date" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -19-
                 93.      "Plan"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -19-
                 94.      "Plan Mailing Date" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -19-
                 95.      "Post-Petition Operational Claim" . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -20-
</TABLE>

                                     (ii)
<PAGE>   7

<TABLE>
<CAPTION>
<S>                                                                                                                    <C>
                 96.      "Preferred Stock" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -20-
                 97.      "Pricing Formulae"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -20-
                 98.      "Priority Tax Claim"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -20-
                 99.      "Professional"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -20-
                 100.     "Professional Claim"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -20-
                 101.     "Pro-Rata Share"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -20-
                 102.     "Qualifying Class 4 Claimant" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -21-
                 103.     "Rate Swap Agreement" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -21-
                 104.     "Record Date" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -21-
                 105.     "Recordation Order" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -21-
                 106.     "Reliance Group"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -21-
                 107.     "Reorganization Case" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -21-
                 108.     "Reorganized Columbia"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -22-
                 109.     "Reorganized TCO" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -22-
                 110.     "Repurchase Price"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -22-
                 111.     "Schedule of Liabilities" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -22-
                 112.     "Securities Action" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -22-
                 113.     "Securities Action Claims"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -22-
                 114.     "Setoff Funds"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -22-
                 115.     "Setoff Order"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -22-
                 116.     "Settlement Amount" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -23-
                 117.     "$750 Million Credit Agreement" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -23-
                 118.     "Stipulation of Dismissal With Prejudice"   . . . . . . . . . . . . . . . . . . . . . . . .  -23-
                 119.     "Stockholder" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -23-
                 120.     "Supplemental Bar Date" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -23-
                 121.     "Supplemental Bar Date Order" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -23-
                 122.     "Surrender Instruments" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -23-
                 123.     "Take-Out Election" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -23-
                 124.     "Take-Out Electors" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -23-
                 125.     "Take-Out Offering" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -23-
                 126.     "Take-Out Securities" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -24-
                 127.     "Tax Allocation Agreement"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -24-
                 128.     "TCO" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -24-
                 129.     "TCO Plan"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -24-
                 130.     "TCO Proceeding"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -24-
                 131.     "Term Loan Facility"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -24-
                 132.     "Unclaimed Distribution"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -24-
                 133.     "Unclassified Claim"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -25-
                 134.     "U.S. Trustee"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -25-
                 135.     "U.S. Trustee's Fee Claims" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -25-
                 136.     "Voting Deadline" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -25-
                 137.     "Working Capital Facility"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -25-
         B.      Rules of Interpretation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -25-
         C.      Computation of Time  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -26-
         D.      Governing Law  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -26-
                                                                                                                       
II.      UNCLASSIFIED CLAIMS AND                                                                                       
         CLASSES OF CLAIMS AND INTERESTS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -27-
         A.      General  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -27-
         B.      Unclassified Claims  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -28-
                 1.       Administrative Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -28-
                          a.   Professional Claims  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -28-
</TABLE>



                                                                (iii)
<PAGE>   8
<TABLE>
<CAPTION>
<S>                                                                                                                   <C>
                          b.   Post-Petition Operational Claims   . . . . . . . . . . . . . . . . . . . . . . . . . . -28-
                          c.   Assumed Executory Contract Claims  . . . . . . . . . . . . . . . . . . . . . . . . . . -28-
                          d.   U.S. Trustee's Fee Claims  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -28-
                          e.   Miscellaneous Administrative Claims  . . . . . . . . . . . . . . . . . . . . . . . . . -29-
                 2.       Priority Tax Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -29-
         C.      Classes of Claims and Interests  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -29-
                 1.       Class 1 - DIP Facility Claim  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -29-
                 2.       Class 2 - Non-Borrowed Money Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . -29-
                 3.       Class 3 - Borrowed Money Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -30-
                          a.   Class 3.1 - Borrowed Money Convenience Claims  . . . . . . . . . . . . . . . . . . . . -30-
                          b.   Class 3.2 - Other Borrowed Money Claims  . . . . . . . . . . . . . . . . . . . . . . . -30-
                 4.       Class 4 - Securities Action Claims  . . . . . . . . . . . . . . . . . . . . . . . . . . . . -31-
                 5.       Class 5 - Intercompany Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -31-
                 6.       Class 6 - Assumed Claims  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -31-
                 7.       Class 7 - Non-Settling Securities Action Claims . . . . . . . . . . . . . . . . . . . . . . -32-
                 8.       Class 8 - Interests in Columbia Common Stock  . . . . . . . . . . . . . . . . . . . . . . . -32-
                                                                                                                      
III.     TREATMENT OF CLAIMS AND INTERESTS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -32-
         A.      Treatment of Unclassified Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -32-
                 1.       Administrative Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -32-
                          a.   Professional Claims  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -32-
                          b.   Post-Petition Operational Claims   . . . . . . . . . . . . . . . . . . . . . . . . . . -33-
                          c.   Assumed Executory Contract Claims    . . . . . . . . . . . . . . . . . . . . . . . . . -33-
                          d.   U.S. Trustee's Fees  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -34-
                          e.   Miscellaneous Administrative Claims  . . . . . . . . . . . . . . . . . . . . . . . . . -34-
                 2.       Priority Tax Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -35-
         B.      Treatment of Classified Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -36-
                 1.       Class 1 - DIP Facility Claim  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -36-
                 2.       Class 2 - Non-Borrowed Money Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . -37-
                 3.       Class 3 - Borrowed Money Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -37-
                          a.   Class 3.1 - Borrowed Money Convenience Claims  . . . . . . . . . . . . . . . . . . . . -37-
                          b.   Class 3.2 - Other Borrowed Money Claims  . . . . . . . . . . . . . . . . . . . . . . . -37-
                 4.       Class 4 - Securities Action Claims  . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40-
                 5.       Class 5 - Intercompany Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -46-
         C.      Treatment of Assumed Claims  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -46-
                 1.       Class 6.1 - Indemnity Claims  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -46-
                 2.       Class 6.2 - PBGC Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -46-
                 3.       Class 6.3 - Shawmut Guarantee Claim   . . . . . . . . . . . . . . . . . . . . . . . . . . . -46-
         D.      Treatment of Class 7 - Non-Settling Securities Action Claims . . . . . . . . . . . . . . . . . . . . -46-
         E.      Treatment of Class 8 - Interests in Columbia Common Stock  . . . . . . . . . . . . . . . . . . . . . -47-
                                                                                                                      
IV.      PROVISIONS GOVERNING DISTRIBUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -47-
         A.      Transactions On the Effective Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -47-
         B.      Distributions on Unclassified Claims and Claims in Classes 1, 2, 4, 6 and 7  . . . . . . . . . . . . -49-
         C.      Distributions on Classes 3.1 and 3.2 Claims  . . . . . . . . . . . . . . . . . . . . . . . . . . . . -50-
                 1.       Record Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -50-
</TABLE>




                                                                 (iv)
<PAGE>   9
<TABLE>
<CAPTION>
<S>                                                                                                                   <C>
                 2.       Surrender of Instruments  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -50-
                 3.       Cancellation of Surrender Instruments and Termination of Debt Obligations . . . . . . . . . -52-
                 4.       Distributions of Cash, New Debt Instruments, Preferred Stock and DECS . . . . . . . . . . . -53-
                 5.       Cash in Lieu of Fractional Shares and Odd Lots; Rounding of New Indenture Securities  . . . -56-
         D.      Reorganized Columbia or Third Party as Disbursing Agent for Claims   . . . . . . . . . . . . . . . . -57-
         E.      Costs of Distribution  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -57-
         F.      Delivery of Distributions; Unclaimed Distributions . . . . . . . . . . . . . . . . . . . . . . . . . -57-
                 1.       Delivery of Distributions in General  . . . . . . . . . . . . . . . . . . . . . . . . . . . -57-
                 2.       Unclaimed Distributions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -58-
         G.      Means of Cash Payments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -60-
         H.      Setoffs  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -61-
         I.      Effective Date Payments or Distributions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -62-
         J.      Limit on Distributions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -63-
         K.      Continuation of Certain Retirement, Workers' Compensation and Long-Term Disability Benefits  . . . . -63-
                                                                                                                      
V.       MEANS FOR IMPLEMENTATION OF THE PLAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -63-
         A.      Continued Corporate Existence and Vesting of Assets in Reorganized Columbia  . . . . . . . . . . . . -63-
         B.      Corporate Governance, Directors and Officers . . . . . . . . . . . . . . . . . . . . . . . . . . . . -64-
                 1.       Certificate of Incorporation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -64-
                 2.       Directors and Officers of Reorganized Columbia  . . . . . . . . . . . . . . . . . . . . . . -65-
                 3.       Corporate Action  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65-
                 4.       LESOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65-
         C.      Preservation of Rights of Action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -66-
         D.      Release of Liens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -66-
         E.      Columbia's Funding Obligations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -67-
         F.      Derivative Claims  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -67-
         G.      Columbia Omnibus Settlement  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -68-
                                                                                                                      
VI.      BAR DATES; PROCEDURES FOR ESTABLISHING ALLOWED CLAIMS                                                        
         AND FOR RESOLVING DISPUTED CLAIMS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -69-
         A.      Bar Date for Objections to Non-Administrative Claims . . . . . . . . . . . . . . . . . . . . . . . . -69-
         B.      Bar Dates for Certain Administrative Claims  . . . . . . . . . . . . . . . . . . . . . . . . . . . . -69-
                 1.       Professional Claims   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -69-
                 2.       Bar Date for Administrative Claims  . . . . . . . . . . . . . . . . . . . . . . . . . . . . -70-
         C.      Authority to Prosecute Objections  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -70-
         D.      Objection to Claims  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -70-
                                                                                                                      
VII.     TREATMENT OF EXECUTORY CONTRACTS AND                                                                         
         UNEXPIRED LEASES; ADDITIONAL BAR DATES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -70-
         A.      General  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -70-
         B.      Payments Related to Assumption of Executory Contracts and Unexpired Leases . . . . . . . . . . . . . -71-
         C.      Bar Date for Rejection Damages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -71-
</TABLE>


                                                                 (v)
<PAGE>   10
<TABLE>
<CAPTION>
<S>                                                                                                                    <C>
         D.      Executory Contracts and Unexpired Leases Entered Into and Other Obligations Incurred After 
                 the Petition Date  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -72-

VIII.     CONDITIONS PRECEDENT TO CONFIRMATION
          AND CONSUMMATION OF THE PLAN  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -72-
         A.      Conditions to Confirmation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -72-
         B.      Conditions to Effective Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -74-
         C.      Waiver of Conditions to Confirmation or Effective Date . . . . . . . . . . . . . . . . . . . . . . .  -76-
         D.      Effect of Non-Occurrence of Conditions to Effective Date . . . . . . . . . . . . . . . . . . . . . .  -77-
                                                                                                                       
IX.      CONFIRMABILITY AND SEVERABILITY                                                                               
         OF THE PLAN AND CRAMDOWN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -77-
         A.      Confirmability and Severability of the Plan  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -77-
         B.      Cramdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -78-
                                                                                                                       
X.       DISCHARGE, RELEASES, SETTLEMENT OF CLAIMS AND INJUNCTION . . . . . . . . . . . . . . . . . . . . . . . . . .  -78-
         A.      Discharge of Claims and Termination of Interests . . . . . . . . . . . . . . . . . . . . . . . . . .  -78-
         B.      Injunction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -79-
         C.      Limitation of Liability  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -80-
                                                                                                                       
XI.      RETENTION OF JURISDICTION  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -81-
                                                                                                                       
XII.     MISCELLANEOUS PROVISIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -84-
         A.      Dissolution of the Creditors' Committee and the Equity Committee . . . . . . . . . . . . . . . . . .  -84-
         B.      Modification of the Plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -84-
         C.      Revocation of the Plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -85-
         D.      Severability of Plan Provisions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -85-
         E.      Successors and Assigns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -86-
         F.      Service of Documents on Columbia or Reorganized Columbia . . . . . . . . . . . . . . . . . . . . . .  -86-
         G.      Payment and Withholding of Taxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -87-
                                                                                                                       
CONFIRMATION REQUEST  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  -88-
</TABLE>

                            SCHEDULES AND EXHIBITS
<TABLE>
<CAPTION>
Schedules and Exhibits            Description
<S>                               <C>
Schedule 3.2                      Post-Petition Interest Calculation for Class 3.2  Claims

Exhibit A                         Amended and Restated Certificate of Incorporation

Exhibit B                         New Indenture
</TABLE>

                                     (vi)
<PAGE>   11

<TABLE>
<S>                               <C>
Exhibit C                         Certificate of Designation of the Preferred Stock

Exhibit D                         Certificate of Designation of the DECS

Exhibit E                         Executory Contracts of Columbia

Exhibit F                         Pricing Formulae
</TABLE>



                                     (vii)
<PAGE>   12
INTRODUCTION

     The Columbia Gas System, Inc. ("Columbia") proposes the following plan of

reorganization (the "Plan") for the resolution of Columbia's outstanding

creditor Claims and equity Interests.  

     For a discussion of Columbia's history, businesses, properties, results

of operations and projections for future operations and for a summary and

analysis of the Plan and related matters, reference should be made to the

Disclosure Statement pursuant to section 1125 of the Bankruptcy Code for the

Plan of Reorganization of The Columbia Gas System, Inc. (the "Disclosure

Statement") Filed by Columbia with the Bankruptcy Court.  Columbia is the

proponent of the Plan within the meaning of section 1129 of the Bankruptcy

Code.  


     ALL HOLDERS OF CLAIMS AGAINST AND INTERESTS IN COLUMBIA SHOULD READ THE
PLAN AND THE DISCLOSURE STATEMENT IN THEIR ENTIRETY BEFORE VOTING TO ACCEPT OR
REJECT THE PLAN.





                                     -1-
<PAGE>   13
I.   DEFINED TERMS, RULES OF INTERPRETATION,
     COMPUTATION OF TIME AND GOVERNING LAW

A.   DEFINED TERMS

     As used in the Plan, the capitalized terms below have the following

meanings.  Any term used in the Plan that is not defined herein, but that is

used in the Bankruptcy Code or the Bankruptcy Rules, shall have the meaning

assigned to that term in the Bankruptcy Code or the Bankruptcy Rules.

     1.   "ADMINISTRATIVE CLAIM" means a Claim for costs and expenses of

administration allowed under sections 503, 507(a)(1), 507(b) or 1114(e)(2) of

the Bankruptcy Code, as more fully described in Section II.B.1,

"Administrative Claims."

     2.   "ADMINISTRATIVE FEE ORDER" means the Administrative Order under

Sections 105(a) and 331 of the Bankruptcy Code Establishing Procedures for

Interim Compensation and Reimbursement of Expenses for all Professionals

entered in the Reorganization Case by the Bankruptcy Court on November 15,

1991, as subsequently amended or supplemented.

     3.   "ALLOWED" when used with respect to a Claim, means a Claim against

Columbia:

          a.   which has been scheduled as undisputed, not contingent and

liquidated in the Schedule of Liabilities, and as to which no proof of Claim

or objection has been timely Filed;

          b.   as to which a proof of Claim has been timely Filed and either:

                i.  no objection thereto has been timely Filed; or 





                                     -2-
<PAGE>   14
               ii.  the Claim has been allowed (but only to the extent
                    allowed) by a Final Order; or

          c.   which is a Professional Claim for which a fee award amount has

been approved by a Final Order.

     4.   "ASSUMED EXECUTORY CONTRACT CLAIM" means a Claim described in

Section II.B.1.c.

     5.   "AUCTION NOTES" means those certain notes issued to evidence "Money

Market Loans" made pursuant to Section 2.03 of the $500 Million Credit

Agreement.

     6.   "AVOIDANCE CLAIM" means a claim which Columbia, Reorganized Columbia

or the Estate may assert under sections 542, 544, 545, 547, 548, 549, 550 or

551 of the Bankruptcy Code.

     7.   "BANK AGENT" means Morgan Guaranty Trust Company of New York, in its

capacity as agent under and pursuant to the provisions of the $500 Million

Credit Agreement and the $750 Million Credit Agreement, respectively.

     8.   "BANKRUPTCY CODE" means title 11 of the United States Code, Section

Section  101 et seq., as now in effect or as the same may hereafter be

amended.

     9.   "BANKRUPTCY COURT" means the United States Bankruptcy Court for the

District of Delaware or, if such court ceases to exercise jurisdiction over

the Reorganization Case, the court or adjunct thereof that exercises

jurisdiction over the Reorganization Case.

     10.  "BANKRUPTCY RULES" means, collectively, the Federal Rules of

Bankruptcy Procedure and the Local Bankruptcy Rules for
















                                     -3-
<PAGE>   15

the District of Delaware, as now in effect or as the same may from time to

time hereafter be amended.

     11.  "BAR DATE" means any applicable date by which proofs of Claim must

have been or, in the future, must be, Filed, as established by or pursuant to

the provisions of the Bar Date Order, the Plan, or the Confirmation Order.  

     12.  "BAR DATE ORDER" means, collectively, the orders of the Bankruptcy

Court establishing bar dates by which proofs of Claim must have been, or in

the future must be, Filed against Columbia, including the Order Establishing

Bar Date for Filing Proofs of Claim entered by the Bankruptcy Court on

December 13, 1991.

     13.  "BID NOTES" means, collectively, the promissory notes, described in

clauses (i) through (v) below, issued by Columbia to the respective payees

named therein, to evidence borrowings from such payees, to wit: (i) Promissory

Note dated June 22, 1988 payable to the order of Bank of Montreal; (ii)

Promissory Note dated June 22, 1988 payable to the order of Continental

Illinois National Bank and Trust Company of Chicago; (iii) Promissory Note

dated March 20, 1991 payable to the order of First City, Texas - Houston,

N.A.; (iv) Promissory Note dated June 22, 1988 payable to the order of Morgan

Guaranty Trust Company of New York; and (v) Promissory Note dated January 19,

1990 payable to the order of Toronto Dominion Bank.

     14.  "BORROWED MONEY CLAIM" means any Claim classified in Class 3.1 or

Class 3.2 of the Plan.




















                                     -4-
<PAGE>   16

     15.  "BORROWED MONEY INSTRUMENTS" means, collectively, the Auction Notes,

the Bid Notes, the Commercial Paper, the Debentures, the LESOP Debentures, the

Medium Term Notes, any notes issued pursuant to the $500 Million Credit

Agreement other than the Auction Notes, and any notes issued pursuant to the

$750 Million Credit Agreement.

     16.  "BUSINESS DAY" means any day which is not a Saturday, a Sunday or a

day which in Wilmington, Delaware, Charleston, West Virginia or New York, New

York is a legal holiday or a day on which banking institutions are authorized

or required by law or other government action to close.

     17.  "CALENDAR QUARTER" means a three (3) month period ending on any

March 31, June 30, September 30 or December 31, provided that the first

Calendar Quarter shall be deemed to be the period commencing on the Effective

Date and ending on the first day that is (x) the last day of such a three (3)

month period and (y) more than sixty days after the Effective Date.

     18.  "CANADA SALE AGREEMENT" means that certain Share Sale and Purchase

Agreement between Columbia and Anderson Exploration Ltd., dated as of November

25, 1991, and approved by the Bankruptcy Court pursuant to an order dated

December 31, 1991. 

     19.  "CASH COLLATERAL ORDERS" means the final orders of the Bankruptcy

Court, dated July 31, 1991 and August 23, 1991, which respectively authorize

TCO to use the cash collateral pledged by TCO to Columbia pursuant to the

Inventory Loan Agreements and the Indenture of Mortgage and Deed of Trust

securing the First 


















                                     -5-
<PAGE>   17

Mortgage Bonds and grant to Columbia and certain other secured parties certain

replacement liens and security interests in TCO's assets. 

     20.  "CASH CONSIDERATION" means the amount of cash, if any, to be

included in the consideration to be paid by Columbia, in accordance with the

provisions of the Plan, in satisfaction of Class 3.2 Claims (exclusive of any

cash to be paid pursuant to the provisions of Section IV.C.5) determined in

the manner described in Section III.B.3.b.

     21.  "CLAIM" means, as against Columbia, 

          a.   a right to payment, whether or not such right is reduced to

judgment, liquidated, unliquidated, fixed, contingent, matured, unmatured,

disputed, undisputed, legal, equitable, secured or unsecured; or

          b.   a right to an equitable remedy for breach of performance if

such breach gives rise to a right to payment, whether or not such right to an

equitable remedy is reduced to judgment, fixed, contingent, matured,

unmatured, disputed, undisputed, secured or unsecured.

     22.  "CLASS" means a class of Claims or Interests.

     23.  "COLUMBIA" means The Columbia Gas System, Inc., a Delaware

corporation, the debtor and debtor-in-possession in the Reorganization Case.

     24.  "COLUMBIA CANADA" means the entity known on the date of the Canada

Sale Agreement as Columbia Gas Development of Canada, 
























                                     -6-
<PAGE>   18

Limited, a Canadian corporation, which was the subject of that agreement.

     25.  "COLUMBIA COMMON STOCK" means the class of common stock presently

authorized for issuance by Columbia.

     26.  "COLUMBIA CUSTOMER GUARANTY" means Columbia's guaranty (subject to

any necessary Bankruptcy Court and regulatory approvals) of (a) the financial

integrity of the Customer Settlement Proposal and (b) the payment of

distributions on account of those claims against TCO arising from TCO's

obligation to make refunds, including applicable interest thereon, to

customer-creditors of TCO pursuant to regulations or orders of FERC, or any

order of a court of competent jurisdiction on appeal of an order of FERC, or

the terms of the FERC Gas Tariffs, to holders of certain unsecured customer

claims and the claims of the Gas Research Institute against TCO, classified in

the TCO Plan as "Class 3.2 Claims", if Class 3.2 of the TCO Plan has voted to

accept the TCO Plan and such holders have either voted in favor of the TCO

Plan or, if they have not voted in favor of the TCO Plan, executed the waiver

agreement annexed to the TCO Plan prior to such plan's effective date. 

Specifically, Columbia has agreed (i) that the Customer Settlement Proposal

will not be "retraded" with TCO's customer-creditors so as to reduce the

financial benefits of the settlement to them, (ii) that the financial benefits

of the Customer Settlement Proposal will not be adversely affected by virtue

of any subsequent settlement reached with other parties in either the TCO

Proceeding or the 




















                                     -7-
<PAGE>   19

Reorganization Case, and (iii) that Columbia and TCO will include the Customer

Settlement Proposal and Columbia's guaranty in their respective plans of

reorganization.  The foregoing guaranty does not apply to any modification

imposed on the Customer Settlement Proposal or on the TCO Plan or the Columbia

Plan incorporating the Customer Settlement Proposal by the action of any

judicial or regulatory authority.

     27.  "COLUMBIA OMNIBUS SETTLEMENT" means Columbia's agreement,

conditioned on the TCO Plan becoming effective without any modification that

is not consented to by Columbia, to facilitate the prompt emergence of TCO and

Columbia from their respective Chapter 11 proceedings by (i) assisting TCO to

monetize the TCO Plan which is estimated to provide for value to be

distributed to TCO's creditors of approximately $3.9 billion (in the event of

100% acceptance of the settlement offers to TCO's producer-creditors embodied

in the TCO Plan), which distribution, in the case of third party creditors,

will be substantially in cash, (ii) providing a guaranty of payment of

distributions to TCO's creditors as provided under the TCO Plan (excluding

assumed obligations), (iii) providing the Columbia Customer Guaranty, (iv)

consenting to the assumption by Reorganized TCO of certain pre-petition

environmental claims of governmental agencies and certain other claims against

TCO, and (v) accepting new secured debt securities of Reorganized TCO (rather

than cash) for a portion of the Columbia Secured Claim and contributing the

balance of the Columbia Secured Claim to




















                                     -8-
<PAGE>   20

Reorganized TCO's equity, in consideration for (a) the retention by Columbia

of the equity of Reorganized TCO, (b) the settlement of litigation over the

liquidation of the producer, customer and certain other claims against TCO,

and (c) a settlement of the claims raised or which could have been raised in

the Intercompany Claims Litigation among Columbia, Columbia Natural Resources,

Inc., TCO, the creditors' committee and the customers' committee appointed in

the TCO Proceeding and all other claims and disputes between TCO's creditors

and Columbia and various other claims and disputes between TCO's creditors and

TCO, as provided in the TCO Plan (other than claims arising in the normal

course of business subsequent to the Petition Date between creditors of TCO

and TCO or Columbia).

     28.  "COLUMBIA SECURED CLAIM" means, as of the Effective Date, the

aggregate of:

     a.   (i) the unpaid principal owing as of the Petition Date in respect of

the First Mortgage Bonds, (ii) the unpaid principal and accrued and unpaid

interest owing as of the Petition Date in respect of the Inventory Financing

Agreement and (iii) the interest on all such unpaid principal and interest

from the Petition Date to the Effective Date, calculated as provided in the

TCO Plan;

     b.   all amounts to which Columbia is entitled under the Cash Collateral

Orders, including post-petition interest as allowed by the Bankruptcy Court;

and




















                                     -9-
<PAGE>   21

     c.   all amounts to which Columbia is entitled for reasonable fees, costs

and charges approved by the Bankruptcy Court under section 506 of the

Bankruptcy Code.

     29.  "COMMERCIAL PAPER" means the Commercial Paper Master Note, dated

October 5, 1990, and any evidence of the debt of Columbia which was originally

issued pursuant thereto as "commercial paper" (as that term is commonly

understood in the financial markets). 

     30.  "COMPLETED" OR "COMPLETION" means, with respect to the Take-Out

Offering, that the securities which may be publicly offered in accordance

therewith have been sold and the proceeds of such sale have been received by

Reorganized Columbia.

     31.  "COMPLYING CLASS 4 CLAIMANT" means a Holder of a Securities Action

Claim that Files, on or before the Supplemental Bar Date, a proof of Claim in

compliance with the requirements of the Supplemental Bar Date Order.

     32.  "CONFIRMATION" means the entry of the Confirmation Order.

     33.  "CONFIRMATION DATE" means the date on which the Bankruptcy Court

enters the Confirmation Order on its docket.

     34.  "CONFIRMATION ORDER" means the order of the Bankruptcy Court

confirming the Plan pursuant to section 1129 of the Bankruptcy Code.

     35.  "CONTRIBUTORS" has the meaning set forth in Section III.B.4.
























                                     -10-
<PAGE>   22
     36.  "CREDITOR" means 

          a.   a Person that has a Claim against Columbia that arose at the

time of or before the Petition Date; or 

          b.   a Person that has a Claim against the Estate of a kind

specified in sections 502(g), 502(h) or 502(i) of the Bankruptcy Code.

     37.  "CREDITORS' COMMITTEE" means the Official Committee of Unsecured

Creditors appointed in the Reorganization Case pursuant to section 1102 of the

Bankruptcy Code.

     38.  "CUSTOMER SETTLEMENT PROPOSAL" means the terms and agreements

embodied in the Stipulation and Agreement, dated April  17, 1995, filed by TCO

with FERC.

     39.  "D&O INSURANCE" means those certain insurance policies which provide

coverage to Columbia and others for, among other things, liabilities in

connection with directors and officers of Columbia, TCO and any other

subsidiary of Columbia.

     40.  "DEBENTURES" mean the debt instruments, other than the Medium Term

Notes, issued pursuant to the 1961 Indenture.

     41.  "DECS" means the shares of dividend enhanced convertible preferred

stock to be issued by Reorganized Columbia under the Plan pursuant to a

certificate of designation substantially in the form of Exhibit D, the

economic terms of which will be determined in accordance with the Pricing

Formulae.

     42.  "DEFICIENCY CLAIM" means the amount, if any, that the Allowed amount

of the DIP Facility Claim exceeds the value of the 


















                                     -11-
<PAGE>   23

collateral securing the DIP Facility Claim as determined by the Bankruptcy

Court.

     43.  "DERIVATIVE ACTIONS" means that certain action captioned as In re

Columbia Gas System, Inc. Derivative Litigation, Consol. C.A. No. 12159, and

currently pending before the Chancery Court of the State of Delaware in and

for New Castle County. 

     44.  "DIP FACILITY" means that certain Secured Revolving Credit

Agreement, dated as of August 20, 1991, among Columbia, the financial

institutions party thereto and Chemical Bank, as successor to Manufacturers

Hanover Trust Company, as Agent, as amended or restated from time to time.

     45.  "DIP FACILITY CLAIM" means the Claim arising from the DIP Facility.

     46.  "DISBURSING AGENT" means (i) Columbia or Reorganized Columbia, in

each case in its capacity as a disbursing agent under the Plan, or (ii) any

third-party designated to act as a disbursing agent under the Plan, in its

capacity as such disbursing agent.

     47.  "DISBURSING AGENT AGREEMENT" means any agreement for disbursing

agent services to be entered into between Columbia or Reorganized Columbia and

a third-party Disbursing Agent, as the same may be amended from time to time.  


     48.  "DISCLOSURE STATEMENT" has the meaning set forth in the

"Introduction" to this Plan.






















                                     -12-
<PAGE>   24

     49.  "DISPUTED" when used with respect to a Claim, means a Claim that is

not an Allowed Claim and that has not been barred or otherwise disallowed or

discharged.  If an objection is timely Filed or deemed timely Filed and

relates to the allowance of only a portion of a Claim, such Claim shall be a

Disputed Claim to the extent of the portion of such Claim to which such

objection relates.

     50.  "EFFECTIVE DATE" means the first Business Day that is more than ten

(10) days after the Confirmation Date and on which (a) no stay of the

Confirmation Order is in effect and (b) all conditions to the Effective Date

set forth in Section VIII.B have been satisfied or, if waivable, waived.

     51.  "EQUITY COMMITTEE" means the Official Committee of Equity Security

Holders appointed in the Reorganization Case pursuant to section 1102 of the

Bankruptcy Code.

     52.  "ESTATE" means the estate created for Columbia in the Reorganization

Case pursuant to section 541 of the Bankruptcy Code.

     53.  "FEE EXAMINER" means the fee examiner appointed by the Bankruptcy

Court pursuant to the Court's January 8, 1992 Order Retaining Examiner on Fees

and Expenses.

     54.  "FERC" means the Federal Energy Regulatory Commission.

     55.  "FERC GAS TARIFF" means the documents filed by TCO with, and in

force from time to time pursuant to procedures established by, FERC setting

forth the rates at and the 




















                                     -13-
<PAGE>   25

conditions under which TCO renders natural gas-related services to its

customers.

     56.  "FILE" OR "FILED" means file or filed in the Reorganization Case

with the Bankruptcy Court, or in the case of proofs of Claim, (a) file or

filed with Poorman-Douglas Corporation, the claims agent designated by order

of the Bankruptcy Court dated December 13, 1991, or (b) deemed so filed

pursuant to section 1111(a) of the Bankruptcy Code. 

     57.  "FINAL ORDER" means an order or judgment of the Bankruptcy Court, or

other court of competent jurisdiction, entered on the docket in the

Reorganization Case, which has not been reversed, vacated or stayed, and as to

which the time to appeal, seek certiorari, move to reconsider, move to amend

judgment or move for a new trial has expired with no appeal or petition for

certiorari having been timely taken or filed, or no motion for new trial,

reconsideration or amendment of judgment having been granted, or as to which

any appeal that has been or may be taken or any petition for certiorari that

has been or may be filed has been resolved by the highest court to which the

order or judgment was appealed or from which certiorari was sought.

     58.  "FIRST MORTGAGE BONDS" means those certain bonds, designated Series

A, B, D, E and F, issued pursuant to and secured by the Indenture of Mortgage

and Deed of Trust, dated as of August 30, 1985, made by TCO in favor of

Wilmington Trust Company.






















                                     -14-
<PAGE>   26

     59.  "$500 MILLION CREDIT AGREEMENT" means that certain $500 Million

Amended and Restated Credit Agreement, dated as of September 17, 1990, among

Columbia, the banks listed therein and Morgan Guaranty Trust Company of New

York, as Agent, as amended or restated from time to time.

     60.  "HOLDER" means the holder of a Claim or Interest and, when used in

conjunction with a Class or type of Claim or Interest, means a holder of a

Claim or Interest in such Class or of such type.

     61.  "INDENTURE TRUSTEE" means the Person that is indenture trustee under

the 1961 Indenture.

     62.  "INTERCOMPANY CLAIMS" means the claims and causes of action asserted

against Columbia and Columbia Natural Resources, Inc. in the Intercompany

Claims Litigation and any claims or causes of action against Columbia or

Columbia Natural Resources, Inc. arising out of the same or similar facts or

circumstances.

     63.  "INTERCOMPANY CLAIMS LITIGATION" means the litigation against

Columbia and Columbia Natural Resources, Inc. on behalf of TCO and the

creditors' committee and the customers' committee appointed in the TCO

Proceeding in the complaints styled and numbered Columbia Gas Transmission

Corporation v. The Columbia Gas System, Inc. and Columbia Natural Resources,

Inc., Adv. No. A92-35, filed on March 19, 1992 and May 26, 1992, pending

before the United States District Court for the District of Delaware.






















                                     -15-
<PAGE>   27

     64.  "INTERESTS" means the rights of the Stockholders as Holders of

shares of Columbia Common Stock (other than Securities Action Claims).

     65.  "INVENTORY LOAN AGREEMENTS" means that certain Inventory Financing

Agreement, dated as of June 19, 1985, between TCO and Columbia, and the

related Security Agreement, dated June 19, 1985, between TCO and Wilmington

Trust Company, as each such agreement may have been amended from time to time.

     66.  "IRS ORDER" means the Order of the Bankruptcy Court, dated October

12, 1994, approving the IRS Settlement Agreement.

     67.  "IRS SETTLEMENT AGREEMENT" means that certain Stipulation and Order

of Settlement of Proofs of Claim Filed by the Internal Revenue Service, dated

October 12, 1994, between the Internal Revenue Service and Columbia.

     68.  "ISSUE" means, when referring to the New Indenture Securities, any

tranche of such New Indenture Securities having identical maturity dates. 

     69.  "KOTANEELEE ESCROW" means that certain escrow established pursuant

to the Canada Sale Agreement as security for the indemnification by Columbia

of Anderson Exploration Ltd. with respect to certain representations and

warranties included, and certain litigation referenced, in the Canada Sale

Agreement.

     70.  "LESOP" means the leveraged employee stock ownership portion of the

Employees' Thrift Plan of Columbia Gas System, as Amended and Restated

Effective April 1, 1990, as the same may have been or may be amended or

restated from time to time.




















                                     -16-
<PAGE>   28

     71.  "LESOP DEBENTURES" means those certain amortizing debentures issued

pursuant to the LESOP Indenture.

     72.  "LESOP GUARANTY" means Columbia's subordinated guaranty, set forth

in Article X of the LESOP Indenture, of the repayment of the LESOP Debentures.

     73.  "LESOP INDENTURE" means that certain Indenture, dated as of October

3, 1989, among the Employees' Thrift Plan of Columbia Gas System Trust,

Columbia and the Bank of Boston, as successor indenture trustee, as same may

have been or may be amended or restated from time to time.

     74.  "LESOP INDENTURE TRUSTEE" means The Bank of Boston in its capacity

as trustee under the LESOP Indenture. 

     75.  "LESOP REGISTRAR" means The Bank of New York in its capacity as

registrar under the LESOP Indenture.

     76.  "LESOP TRUST" means the Employees' Thrift Plan of Columbia Gas

System Trust established in connection with the LESOP pursuant to the Trust

Agreement dated as of October 17, 1991 between Columbia and the LESOP Trustee

(which succeeded the Master Savings Plan Trust Agreement, dated as of March

14, 1990, between Columbia and Bankers Trust Company).

     77.  "LESOP TRUSTEE" means First Fidelity Bank, N.A., in its capacity as

trustee under the LESOP Trust.

     78.  "LIQUIDATION VALUE" means (i) with respect to a share of the DECS,

the market price of a share of Columbia Common Stock on the fifth business day

prior to the Effective Date and (ii) 




















                                     -17-
<PAGE>   29

with respect to the Preferred Stock, $25.00 per share of Preferred Stock.

     79.  "MAXIMUM OFFER AMOUNT" has the meaning set forth in Section III.B.4.

     80.  "MAXIMUM PROOF OF CLAIM AMOUNT" has the meaning set forth in Section

III.B.4. 

     81.  "MEDIUM TERM NOTES" means the debt issued by Columbia pursuant to

the thirty-fifth, thirty-sixth and thirty-seventh supplemental indentures,

dated as of August 18, 1989, November 30, 1989 and June 6, 1990, respectively,

to the 1961 Indenture.

     82.  "MISCELLANEOUS ADMINISTRATIVE CLAIM" means a Claim described in

Section II.B.1.e.

     83.  "NEW INDENTURE" means the indenture, substantially in the form

attached as Exhibit B (together with any supplements thereto), to be entered

into by Columbia as of the Effective Date, pursuant to which the New Indenture

Securities are to be issued.

     84.  "NEW INDENTURE TRUSTEE" means the Person that is the indenture

trustee under the New Indenture.

     85.  "NEW INDENTURE SECURITIES" means those certain debt instruments to

be issued under the Plan by Columbia on the Effective Date under and in

accordance with the terms of the New Indenture, the economic terms of which

will be determined in accordance with the Pricing Formulae.

     86.  "1961 INDENTURE" means that certain Indenture, dated as of June 1,

1961, as the same may from time to time have been 




















                                     -18-
<PAGE>   30

amended or supplemented, between Columbia and Marine Midland Bank, as

successor trustee to Morgan Guaranty Trust Company of New York.

     87.  "NON-BORROWED MONEY CLAIM" means a Claim classified as a Class 2

Claim in the Plan.

     88.  "OFFER OF SETTLEMENT" has the meaning set forth in Section III.B.4.

     89.  "OMNIBUS ORDERS" mean the Final Orders of the Bankruptcy Court,

dated December 15, 1992 and January 25, 1993, authorizing Columbia to pay,

without the need for prior Bankruptcy Court approval, the fees of certain

professionals retained in the ordinary course of business by Columbia.

     90.  "PBGC" means the Pension Benefit Guaranty Corporation.

     91.  "PERSON" means a natural person, corporation, partnership, joint

stock company, trust, association, unincorporated association, governmental

agency, instrumentality or subdivision, or any other entity.

     92.  "PETITION DATE" means July 31, 1991.

     93.  "PLAN" means this Plan of Reorganization of Columbia and all

exhibits, attachments and schedules annexed hereto or referenced herein, as

the same may be amended, modified or supplemented by or with the consent of

Columbia.

     94.  "PLAN MAILING DATE" means that date set by order of the Bankruptcy

Court as the date for the mailing of the Plan to Creditors and Holders of

Interests for purposes of voting thereon.






















                                     -19-
<PAGE>   31

     95.  "POST-PETITION OPERATIONAL CLAIM" means a Claim described in Section

II.B.1.b.

     96.  "PREFERRED STOCK" means the shares of new preferred stock to be

issued by Reorganized Columbia pursuant to the Plan pursuant to a certificate

of designation substantially in the form attached hereto as Exhibit C, the

economic terms of which will be determined in accordance with the Pricing

Formulae.

     97.  "PRICING FORMULAE" means the pricing methodologies described in

Exhibit F attached hereto.

     98.  "PRIORITY TAX CLAIM" means a Claim described in Section II.B.2.

     99.  "PROFESSIONAL" means any professional employed in the Reorganization

Case pursuant to sections 327 or 1103 of the Bankruptcy Code, any professional

employed by Columbia pursuant to the Omnibus Orders and any professional

seeking compensation or reimbursement of expenses pursuant to sections 330(a)

and 503(b)(4) of the Bankruptcy Code. 

     100. "PROFESSIONAL CLAIM" means a Claim described in Section II.B.1.a.

     101. "PRO-RATA SHARE" means a fraction the numerator of which is the

aggregate of the Allowed amount of a Class 3.2 Claim and the post-petition

interest to be paid on such Claim in accordance with the Plan, and the

denominator of which is the aggregate of the Allowed amounts of all Allowed

Class 3.2 Claims and the post-petition interest to be paid on all such Claims

in accordance with the Plan.




















                                     -20-
<PAGE>   32

     102. "QUALIFYING CLASS 4 CLAIMANT" means a Complying Class 4 Claimant

that purchased shares of Columbia Common Stock or debt securities of Columbia

on or after March 1, 1990 and (i) retained such shares or securities

continuously at least until March 31, 1991 or (ii) sold such securities on or

after March 31, 1991 but not later than June 18, 1991 and received for the

sale of such shares or securities an amount less than such Claimant paid for

such shares or securities.

     103. "RATE SWAP AGREEMENT" means that certain Interest Rate Swap

Agreement, dated as of November 30, 1990, between Columbia and The Toronto-

Dominion Bank, New York Branch and the agreements entered into by Columbia and

such bank ancillary or pursuant thereto.

     104. "RECORD DATE" has the meaning set forth in Section IV.C.1.

     105. "RECORDATION ORDER" means that certain order Authorizing Procedures

to Maintain Records of Certain Pre-Petition Claims, submitted by Columbia to

the Bankruptcy Court, as the same shall be entered by the Bankruptcy Court

prior to solicitation of acceptances of the Plan.

     106. "RELIANCE GROUP" means, collectively, Reliance Insurance Company and

United Pacific Insurance Company.

     107. "REORGANIZATION CASE" means the case under Chapter 11 of the

Bankruptcy Code bearing number 91-803 pending in the United States Bankruptcy

Court for the District of Delaware with respect to Columbia.






















                                     -21-
<PAGE>   33

     108. "REORGANIZED COLUMBIA" means Columbia (i) on the Effective Date to

the extent and for the purpose of performing those acts which are required

under the Plan to be performed by Reorganized Columbia on the Effective Date

and (ii) after the Effective Date.

     109. "REORGANIZED TCO" means TCO (i) on the effective date of the TCO

Plan to the extent and for the purpose of performing those acts which are

required under the TCO Plan to be performed by Reorganized TCO on the

effective date of the TCO Plan and (ii) after the effective date of the TCO

Plan.

     110. "REPURCHASE PRICE" has the meaning set forth in Section III.B.3.b.

     111. "SCHEDULE OF LIABILITIES" means the schedule of assets and

liabilities Filed by Columbia under section 521(1) of the Bankruptcy Code, as

amended from time to time.

     112. "SECURITIES ACTION" means that certain consolidated action styled

and numbered In re Columbia Gas Securities Litigation, Consol. C.A. No. 91-

357, pending before the United States District Court for the District of

Delaware.

     113. "SECURITIES ACTION CLAIMS" means the Claims asserted in or arising

from the Securities Action.

     114. "SETOFF FUNDS" means those funds held by Morgan Guaranty Trust

Company of New York in accordance with the Setoff Order.

     115. "SETOFF ORDER" means that certain Stipulation and Order Authorizing

Investment of Certain Funds subject to Setoff and 


















                                     -22-
<PAGE>   34

Providing Adequate Protection, among Columbia, Morgan Guaranty Trust Company

of New York and Mellon Bank, N.A., approved by the Bankruptcy Court on

December 17, 1992.

     116. "SETTLEMENT AMOUNT" has the meaning set forth in Section III.B.4.

     117. "$750 MILLION CREDIT AGREEMENT" means that certain $750 Million

Credit Agreement, dated as of October 5, 1988, among Columbia, the banks

listed therein and Morgan Guaranty Trust Company of New York, as agent.

     118. "STIPULATION OF DISMISSAL WITH PREJUDICE"  has the meaning set forth

in Section IV.A.

     119. "STOCKHOLDER" means any Holder of any of the issued and outstanding

shares of Columbia Common Stock.

     120. "SUPPLEMENTAL BAR DATE" means the bar date for filing proofs of

Claim provided in the Supplemental Bar Date Order.

     121. "SUPPLEMENTAL BAR DATE ORDER" has the meaning set forth in Section

III.B.4.

     122. "SURRENDER INSTRUMENTS" has the meaning set forth in Section IV.C.2.

     123. "TAKE-OUT ELECTION" has the meaning set forth in Section III.B.3.b.

     124. "TAKE-OUT ELECTORS" has the meaning set forth in Section III.B.3.b.

     125. "TAKE-OUT OFFERING" has the meaning set forth in Section III.B.3.b.


























                                     -23-
<PAGE>   35

     126. "TAKE-OUT SECURITIES" has the meaning set forth in Section

III.B.3.b.

     127. "TAX ALLOCATION AGREEMENT" means the Tax Allocation Agreement, dated

as of December 31, 1990, among Columbia and its subsidiaries, interpreted and

applied in a manner consistent with its interpretation and application prior

to the Petition Date.

     128. "TCO" means Columbia Gas Transmission Corporation, a Delaware

corporation and a wholly-owned subsidiary of Columbia which is a Chapter 11

debtor and debtor-in-possession.

     129. "TCO PLAN" means the First Amended Plan of Reorganization of TCO,

dated April 17, 1995, and all exhibits, attachments and schedules annexed

thereto or referenced therein, filed in the TCO Proceeding, as the same may be

further amended, modified or supplemented, provided that such further

amendments, modifications or supplements shall have been consented to by

Columbia and TCO.

     130. "TCO PROCEEDING" means TCO's case under Chapter 11 of the Bankruptcy

Code, bearing number 91-804, pending in the United States Bankruptcy Court for

the District of Delaware.

     131. "TERM LOAN FACILITY" means a term loan banking facility to be

entered into by Reorganized Columbia as of the Effective Date with such

financial institutions and on such terms and conditions as Reorganized

Columbia may deem appropriate.

     132. "UNCLAIMED DISTRIBUTION" has the meaning set forth in Section IV.F.


















                                     -24-
<PAGE>   36

     133. "UNCLASSIFIED CLAIM" means a Claim described in Section II.B.1.

     134. "U.S. TRUSTEE" means the Office of the United States Trustee.

     135. "U.S. TRUSTEE'S FEE CLAIMS" means the Claims described in Section

II.B.1.d.

     136. "VOTING DEADLINE" means the deadline for voting to accept or reject

the Plan established by order of the Bankruptcy Court.

     137. "WORKING CAPITAL FACILITY" means a working capital banking facility

to be entered into by Reorganized Columbia as of the Effective Date with such

financial institutions and on such terms and conditions as Reorganized

Columbia may deem appropriate. 

B.   RULES OF INTERPRETATION

     For purposes of the Plan:  (i) whenever from the context it is

appropriate, each term, whether stated in the singular or the plural, shall

include both the singular and the plural; (ii) any reference in the Plan to a

contract, instrument, release, indenture or other agreement or document being

in a particular form or on particular terms and conditions means that such

document shall be substantially in such form or substantially on such terms

and conditions; (iii) any reference in the Plan to a document or exhibit Filed

or to be Filed means such document or exhibit, as it may have been or may be

amended, modified or supplemented; (iv) unless otherwise specified, all

references in 






















                                     -25-
<PAGE>   37

the Plan to sections, articles, schedules and exhibits are references to

sections, articles, schedules and exhibits of or to the Plan; (v) the words

"herein" and "hereto" refer to the Plan in its entirety rather than a

particular portion of the Plan; (vi) captions and headings to articles and

sections are inserted for convenience of reference only and are not intended

to be a part of or to affect the interpretation of the Plan; and (vii) the

rules of construction set forth in section 102 of the Bankruptcy Code shall

apply.

C.   COMPUTATION OF TIME

     In computing any period of time prescribed or allowed by the Plan, the

provisions of Bankruptcy Rule 9006(a) shall apply.

D.   GOVERNING LAW

     EXCEPT TO THE EXTENT THAT THE BANKRUPTCY CODE OR BANKRUPTCY RULES ARE

APPLICABLE, AND SUBJECT TO THE PROVISIONS OF ANY CONTRACT, INSTRUMENT,

RELEASE, INDENTURE OR OTHER AGREEMENT OR DOCUMENT ENTERED INTO IN CONNECTION

WITH THE PLAN, THE RIGHTS AND OBLIGATIONS ARISING UNDER THE PLAN SHALL BE

GOVERNED BY, AND CONSTRUED AND ENFORCED IN ACCORDANCE WITH, THE LAWS OF THE

STATE OF DELAWARE, WITHOUT GIVING EFFECT TO CONFLICTS-OF-LAW PRINCIPLES WHICH

WOULD APPLY THE LAW OF A JURISDICTION OTHER THAN THE STATE OF DELAWARE OR THE

UNITED STATES OF AMERICA.
























                                     -26-
<PAGE>   38

II.  UNCLASSIFIED CLAIMS AND
     CLASSES OF CLAIMS AND INTERESTS

A.   GENERAL

     Administrative Claims and Priority Tax Claims described below in Section

II.B, have not been classified and the Holders thereof are not entitled to

vote on the Plan.

     To the extent that a Holder of a Claim asserts or holds more than one

Claim and such Claims are classified in different Classes, each such Claim

shall be deemed for purposes of this Plan to be a distinct Claim entitled to

participate in the appropriate Class, subject to the following sentence.  If

any Holder of a Claim asserts or holds more than one Claim in any one Class,

all of such Claims shall be aggregated and the Holder's aggregate Claim shall

be accorded the treatment appropriate for a Claim of such type and amount.

     A Claim is classified in a particular Class only to the extent that the

Claim qualifies within the description of that Class.  A Claim is also

classified in a particular Class for the purpose of receiving distributions

pursuant to the Plan only to the extent that such Claim is an Allowed Claim in

that Class and has not been paid, released or otherwise satisfied.





























                                     -27-
<PAGE>   39

B.   UNCLASSIFIED CLAIMS

     1.   ADMINISTRATIVE CLAIMS

     Administrative Claims consist of those Claims described below:

          a.   PROFESSIONAL CLAIMS

     Professional Claims consist of all Administrative Claims for unpaid fees

and expenses of Professionals and amounts for compensation Allowed under

sections 330(a) and 503(b) of the Bankruptcy Code.

          b.   POST-PETITION OPERATIONAL CLAIMS

     Post-Petition Operational Claims consist of all Administrative Claims in

respect of liabilities incurred by Columbia in the ordinary course of business

during the pendency of the Reorganization Case including, but not limited to,

Administrative Claims of governmental units for taxes, trade vendor and

supplier payment obligations and obligations under contracts and leases.

          c.   ASSUMED EXECUTORY CONTRACT CLAIMS

     Assumed Executory Contract Claims consist of all obligations of Columbia

to cure defaults arising from or in connection with the assumption of pre-

petition executory contracts and unexpired leases by Columbia, under the Plan

or otherwise, pursuant to section 365(b)(1) of the Bankruptcy Code.    

          d.   U.S. TRUSTEE'S FEE CLAIMS

     The U.S. Trustee's Fee Claims consist of the fees Columbia is required to

pay pursuant to 28 U.S.C. Section 1930(a)(6).






















                                     -28-
<PAGE>   40

          e.   MISCELLANEOUS ADMINISTRATIVE CLAIMS

     Miscellaneous Administrative Claims consist of all  Administrative Claims

other than Professional Claims, Post-Petition Operational Claims, Assumed

Executory Contract Claims and U.S. Trustee's Fee Claims, including but not

limited to Claims which are (i) contingent indemnification Claims of officers,

directors, employees and agents of Columbia, TCO or any other subsidiary of

Columbia and (ii) post-petition personal injury and property damage Claims. 

Miscellaneous Administrative Claims include specifically: (i) the indemnity

claims arising under the Canada Sale Agreement in favor of the purchaser of

the stock of Columbia Canada and (ii) indemnity Claims under Columbia's

indemnity agreements with the Reliance Group.

     2.   PRIORITY TAX CLAIMS

     Priority Tax Claims consist of all Claims for the payment of taxes

entitled to priority in payment pursuant to section 507(a)(8) of the

Bankruptcy Code.

C.   CLASSES OF CLAIMS AND INTERESTS 

     1.   CLASS 1 - DIP FACILITY CLAIM

     Class 1 consists of the DIP Facility Claim.

     2.   CLASS 2 - NON-BORROWED MONEY CLAIMS

     Class 2 consists of all pre-petition Claims that are not Unclassified

Claims and that are not treated in any other Class under the Plan.  






















                                     -29-
<PAGE>   41

     3.   CLASS 3 - BORROWED MONEY CLAIMS

     a.   CLASS 3.1 - BORROWED MONEY CONVENIENCE CLAIMS

     Class 3.1 consists of all pre-petition Claims that, as of the Petition

Date, did not exceed $15,000 and that would be classified in Class 3.2 but for

the fact that such Claims did not exceed $15,000 as of such date;

     b.   CLASS 3.2 - OTHER BORROWED MONEY CLAIMS

     Class 3.2 consists of the following pre-petition Claims that, as of the

Petition Date, were for an amount in excess of $15,000:

     i.   DEBENTURE CLAIMS:

          All pre-petition Claims arising under the Debentures;

     ii.  $500 MILLION CREDIT AGREEMENT CLAIMS:

          All pre-petition Claims (other than the Auction Note Claims) arising

          under the $500 Million Credit Agreement;

     iii. $750 MILLION CREDIT AGREEMENT CLAIMS:

          All pre-petition Claims arising under the $750 Million Credit

          Agreement;

     iv.  COMMERCIAL PAPER CLAIMS:

          All pre-petition Claims arising under the Commercial Paper;

     v.   BID NOTE CLAIMS:

          All pre-petition Claims arising under the Bid Notes;
























                                     -30-
<PAGE>   42
     vi.  AUCTION NOTE CLAIMS:

          All pre-petition Claims arising under the Auction Notes;

     vii. MEDIUM TERM NOTE CLAIMS:

          All pre-petition Claims arising under the Medium Term Notes;

     viii. LESOP CLAIMS:

          All pre-petition Claims arising under the LESOP Guaranty; and 

     ix.  RATE SWAP CLAIMS:

          All pre-petition Claims arising under the Rate Swap Agreement.

     4.   CLASS 4 - SECURITIES ACTION CLAIMS

          Class 4 consists of all Securities Action Claims the Holders of

which have, prior to or upon the Supplemental Bar Date, filed a proof of Claim

in compliance with the provisions of the Supplemental Bar Date Order.

     5.   CLASS 5 - INTERCOMPANY CLAIMS

          Class 5 consists of the Intercompany Claims.

     6.   CLASS 6 - ASSUMED CLAIMS

     a.   CLASS 6.1 - INDEMNITY CLAIMS

     Class 6.1 consists of the pre-petition Claims of the officers, directors,

employees or agents of Columbia, TCO or Columbia's other subsidiaries, to the

extent insurance proceeds from the D&O Insurance are inadequate or unavailable

to satisfy such claims, arising from liabilities assessed against such


























                                     -31-
<PAGE>   43
officers, directors, employees or agents for which Columbia is obligated to

indemnify under Delaware state law, the terms of Columbia's certificate of

incorporation or otherwise.

     b.   CLASS 6.2 - PBGC GUARANTEE CLAIMS

     Class 6.2 consists of Columbia's secondary obligations to the PBGC for

contributions to the pension fund of Columbia's subsidiaries.

     c.   CLASS 6.3 - SHAWMUT GUARANTEE CLAIM

     Class 6.3 consists of Columbia's secondary obligation to Shawmut Bank of

Boston, N.A. for certain of the obligations of Columbia Gas of Ohio, Inc.

under the lease for the latter's headquarters in Columbus, Ohio.

     7.   CLASS 7 - NON-SETTLING SECURITIES ACTION CLAIMS

     Class 7 consists of all Claims classified in Class 4 as of the Plan

Mailing Date, the Holders of which do not vote to accept the Plan. 

     8.   CLASS 8 - INTERESTS IN COLUMBIA COMMON STOCK

     Class 8 consists of all Interests of the Stockholders.

III. TREATMENT OF CLAIMS AND INTERESTS

A.   TREATMENT OF UNCLASSIFIED CLAIMS

     1.   ADMINISTRATIVE CLAIMS

          a.   PROFESSIONAL CLAIMS

     Each Holder of an Allowed Professional Claim will receive cash equal to

the amount of such Claim and such post-petition interest as may be Allowed by

the Bankruptcy Court (unless Columbia and the Holder of such Claim agree to

other treatment) 




















                                     -32-
<PAGE>   44

on the later of (i) the Effective Date and (ii) the tenth day after the date

on which an order allowing such Claim or post-petition interest becomes a

Final Order.

          b.   POST-PETITION OPERATIONAL CLAIMS

     Each Post-Petition Operational Claim that is unpaid as of the Effective

Date will be assumed and paid by Reorganized Columbia pursuant to the terms

and conditions of the particular transaction giving rise to such Claim,

without any further action on the part of the Holder of such Claim.  

          c.   ASSUMED EXECUTORY CONTRACT CLAIMS 

     Each Assumed Executory Contract Claim that is Allowed on the Effective

Date will be paid in full, together with post-petition interest thereon

calculated as described below, in cash on the Effective Date or upon such

earlier or later date as may be authorized by order of the Bankruptcy Court. 

Any Assumed Executory Contract Claim that becomes an Allowed Claim after the

Effective Date will be paid in full, together with post-petition interest

thereon calculated as described below, in cash, within forty-five days after

the end of the Calendar Quarter in which such Claim becomes an Allowed Claim. 

Payment will be made net of any setoff of moneys owed by the Holder of such

Claim to Columbia.

     Post-petition interest from the date a defaulted payment was required to

have been made to the date of distribution shall be calculated (i) with

respect to any Assumed Executory Contract Claim evidenced by a written

agreement setting forth a non-


















                                     -33-
<PAGE>   45

default contractual interest rate, at such non-default contractual rate and

(ii) with respect to any other Assumed Executory Contract Claim, at six

percent (6%) per annum, or as otherwise provided by the Bankruptcy Court.

          d.   U.S. TRUSTEE'S FEES

     U.S. Trustee's Fee Claims that are unpaid as of the Effective Date will

be paid in full in cash on the Effective Date.

          e.   MISCELLANEOUS ADMINISTRATIVE CLAIMS

     Indemnity Claims under the Canada Sale Agreement (i) if liquidated on the

Effective Date, will be paid on the Effective Date in full in cash or (ii) if

not then liquidated, will be assumed by Reorganized Columbia and the then-

existing Kotaneelee Escrow will be adjusted in accordance with the terms of

the Canada Sale Agreement.  At Columbia's option, the Kotaneelee Escrow may be

replaced on the Effective Date or at any time thereafter by a letter of credit

as provided for in the Canada Sale Agreement.

     Indemnity Claims arising under agreements with the Reliance Group (i) if

liquidated on the Effective Date, will be paid on the Effective Date in full

in cash or (ii) if not then liquidated, will be assumed by Reorganized

Columbia.

     Any remaining Miscellaneous Administrative Claim that is unpaid as of the

Effective Date will be assumed by Columbia and paid in full in cash as it

becomes due and payable or as otherwise agreed to or directed by Bankruptcy

Court order.




















                                     -34-
<PAGE>   46

     Any Miscellaneous Administrative Claim liquidated prior to the Effective

Date and not paid at the time liquidated shall be entitled, when paid, to

receive in cash post-petition interest from the date such Claim is liquidated

to the date of payment thereof calculated at the rate of six percent (6%) per

annum or as otherwise provided by the Bankruptcy Court.

2.   PRIORITY TAX CLAIMS

     Each Priority Tax Claim (other than a Claim that is the subject of the

IRS Order) that is Allowed on the Effective Date, and any post-petition

interest due thereon, will be paid, to the extent Allowed, in cash on the

Effective Date.  Any such Priority Tax Claim that becomes an Allowed Claim

after the Effective Date, and any post-petition interest due thereon, will be

paid, to the extent Allowed, in cash within thirty days from the date on which

it becomes an Allowed Claim.  

     Any Priority Tax Claim that is the subject of the IRS Order will be paid

in installments over a period not to exceed six years from the date of

assessment of such Claim, together with interest at the rate set forth in the

IRS Settlement Agreement.  The full amount of such Claims will be paid in cash

in equal quarterly installments beginning on the date which is three months

after the Effective Date and ending on the last quarterly date which does not

exceed six years from the date of assessment of such Claims, except that the

first quarterly installment shall be paid in three equal monthly installments

beginning on the Effective Date.  Each monthly or quarterly installment shall

be 


















                                     -35-
<PAGE>   47

paid together with interest on such installment, at the rate set forth in the

IRS Settlement Agreement, accrued to the date of payment.  Notwithstanding the

foregoing, however, Reorganized Columbia shall have the right to pay the

Claims of the Internal Revenue Service, or any remaining balance of such

Claims, in full or in part at any time on or after the Effective Date, without

premium or penalty.  Any payments with respect to Claims of the Internal

Revenue Service made by TCO or Reorganized TCO pursuant to the IRS Settlement

Agreement shall reduce the Claim of the Internal Revenue Service in accordance

with the IRS Order.

     All holders of Priority Tax Claims shall be entitled to post-petition

interest payable pursuant to the appropriate statute imposing such tax, at the

rate of interest set forth in such statute, or, if no rate is set forth in

such statute, at the rate of six percent (6%) per annum, or as otherwise

provided by the Bankruptcy Court, provided, however, that the rate of interest

to be paid to the Internal Revenue Service shall be governed by the provisions

of the IRS Order. 

B.   TREATMENT OF CLASSIFIED CLAIMS

     1.   CLASS 1 - DIP FACILITY CLAIM

     On the Effective Date, the DIP Facility Claim shall be paid in full in

cash.  On the Effective Date, the DIP Facility will terminate by its terms and

any then issued and outstanding letters of credit under the DIP Facility, if

not then extended by agreement between Reorganized Columbia and Chemical Bank,

will be replaced on terms acceptable to Reorganized Columbia.  Any 


















                                     -36-
<PAGE>   48

Deficiency Claim shall be treated as an Administrative Claim in accordance

with section 364(c) of the Bankruptcy Code and the Bankruptcy Court order

approving the DIP Facility.

     The Class 1 Claim is unimpaired.

     2.   CLASS 2 - NON-BORROWED MONEY CLAIMS

     On the Effective Date, each Allowed Class 2 Claim shall be paid in cash

in full together with post-petition interest thereon calculated at the rate of

six percent (6%) per annum or as otherwise provided by the Bankruptcy Court.

     Class 2 Claims are unimpaired.

     3.   CLASS 3 - BORROWED MONEY CLAIMS

     a.   CLASS 3.1 - BORROWED MONEY CONVENIENCE CLAIMS

     On the Effective Date, each Allowed Class 3.1 Claim shall be paid in cash

in full together with post-petition interest thereon calculated as if such

Claim were an Allowed Class 3.2 Claim.

     Class 3.1 Claims are unimpaired.

     b.   CLASS 3.2 - OTHER BORROWED MONEY CLAIMS

     On the Effective Date, each Allowed Class 3.2 Claim shall be paid in

full, together with post-petition interest thereon calculated in accordance

with the paragraph of Schedule 3.2 relevant to such Claim, by the issuance to

the Holder thereof of its Pro Rata Share, subject to adjustment as described

in Section IV.C.5, of (i) the Cash Consideration, if any, (ii) the aggregate

principal amount of each Issue of New Indenture Securities, (iii) the

aggregate Liquidation Value of the Preferred Stock and (iv) the aggregate

Liquidation Value of the DECS.
















                                     -37-
<PAGE>   49

     The total number of shares of Preferred Stock to be issued pursuant to

the preceding paragraph will be that number of shares having an aggregate

Liquidation Value of $200 million and the total number of shares of DECS to be

issued pursuant to the preceding paragraph will be that number of shares

having an aggregate Liquidation Value of $200 million, subject, in each case,

to adjustment as described in Section IV.C.5.  The amount of the Cash

Consideration, if any, will be determined by Columbia prior to the Effective

Date taking into account the cash Columbia projects will be available to it on

the Effective Date, the cash Columbia estimates will be required post-

Effective Date for its and its subsidiaries' working capital and liquidity

needs and the cash required by it to fulfill its obligations under the

Columbia Omnibus Settlement.  The balance of the consideration to be paid to

holders of Allowed Class 3.2 Claims, other than pursuant to Section IV.C.5,

will be in the form of New Indenture Securities, divided among the respective

Issues thereof substantially equally, with no Issue having an aggregate

principal amount which is less than 70% of the aggregate principal amount of

any other Issue.

     Each Holder of an Allowed Class 3.2 Claim shall have the option (the

"Take-Out Election") to request, prior to the Voting Deadline, Reorganized

Columbia to repurchase the shares of Preferred Stock and DECS which such

Holder will receive under the Plan on the Effective Date (the securities as to

which the Take-Out Election has been made being referred to herein as the

"Take-


















                                     -38-
<PAGE>   50

Out Securities"), subject to the conditions set forth herein.  Any Holder of

an Allowed Class 3.2 Claim electing the Take-Out Election (a "Take-Out

Elector") shall have thereby made an irrevocable offer to sell the Take-Out

Securities to Reorganized Columbia at the Repurchase Price and subject to the

conditions set forth herein.  

     If the Take-Out Securities have an aggregate Liquidation Value of at

least $200 million, Reorganized Columbia will undertake in good faith to

Complete, within one hundred-eighty (180) days after the Effective Date, a

public offering (the "Take-Out Offering") of Columbia securities at an

aggregate public offering price equal to, when added to other funds Columbia,

at its option, decides to apply to the repurchase of Take-Out Securities, the

Liquidation Value of the Take-Out Securities.  Reorganized Columbia, in its

sole discretion, shall determine the nature of the securities to be sold in

the Take-Out Offering, the price at which they are to be sold, the timing of

the offering, the amount of any commissions to be paid or discounts to be

given to any underwriters or distributors and the terms and conditions of such

sale, including the terms of any underwriting agreement entered into in

connection with the Take-Out Offering.

     If the Take-Out Offering is Completed within one hundred-eighty (180)

days after the Effective Date, Reorganized Columbia will, on the date such

Completion occurs and the securities sold in the Take-Out Offering are issued,

repurchase from the Take-Out 




















                                     -39-
<PAGE>   51

Electors, and the Take-Out Electors will sell to Reorganized Columbia, the

Take-Out Securities at an aggregate purchase price (the "Repurchase Price")

equal to the Liquidation Value of the Take-Out Securities, less underwriting

commissions and discounts incurred by Reorganized Columbia in connection with

the Take-Out Offering, plus accrued and unpaid dividends, if any, on the Take-

Out Securities.  If the Take-Out Offering is not Completed within one hundred

eighty (180) days of the Effective Date, Reorganized Columbia will have no

obligation to repurchase the Take-Out Securities under the Plan, provided,

however, that Reorganized Columbia shall have the option to effect such

repurchase with other funds available to it, at any time on or before the date

that is one hundred-eighty (180) days after the Effective Date, whether or not

the Take-Out Offering is Completed, in which event, the Repurchase Price shall

be the Liquidation Value of the Take-Out Securities plus, accrued and unpaid

dividends, if any, on the Take-Out Securities.

     Class 3.2 Claims are impaired.

     4.   CLASS 4 - SECURITIES ACTION CLAIMS

          Columbia intends to seek by motion to the Bankruptcy Court, or such

other court as may have jurisdiction to so order, an order approving a

supplemental bar date for Holders of Claims arising from the Securities Action

(the "Supplemental Bar Date Order").  The Supplemental Bar Date Order shall

provide that each Holder of a Securities Action Claim against Columbia or a

like claim against any other party that has asserted timely 




















                                     -40-
<PAGE>   52

indemnification Claims against Columbia must complete and File with respect to

each actual or threatened Claim, by a date set forth therein (the

"Supplemental Bar Date"), a proof of Claim form setting forth, among other

things, (i) the amount of such Holder's Securities Action Claim; (ii) as to

each purchase and sale of shares of Columbia Common Stock or debt securities,

the ownership, purchase or sale of which forms the basis of such Claim, the

date of such purchase or sale, the quantity purchased or sold and the

aggregate purchase price of such purchase or net proceeds of such sale; and

(iii) the number of shares of Columbia Common Stock and the form of and

principal amount of any Columbia debt securities owned by such Holder on June

18, 1991.  

     Any Holder of a Securities Action Claim failing to File, on or before the

Supplemental Bar Date, a proof of Claim in compliance with the provisions of

the Supplemental Bar Date Order shall be forever barred from asserting any

Securities Action Claim against Columbia or Reorganized Columbia, shall not

participate in the Offer of Settlement, shall receive no distribution under

the Plan in respect of its Securities Action Claim and shall be enjoined from

asserting such claim against any other party that has asserted timely

indemnification Claims against Columbia.

     Pursuant to the Plan, Columbia proposes to settle and discharge all

Securities Action Claims of Qualifying Class 4 Claimants by making the

following offer (the "Offer of Settlement"):




















                                     -41-
<PAGE>   53

     1.   Columbia and various non-debtors (collectively, the "Contributors")

will contribute up to an aggregate of $18 million (such amount, as the same

may be changed as described below in this Section III.B.4, the "Settlement

Amount") in such proportions as the Contributors may agree among themselves.

     2.   (a)  A Qualifying Class 4 Claimant that purchased shares of Columbia

Common Stock on or after March 1, 1990, but not later than September 30, 1990,

or on or after May 15, 1991, but not later than June 18, 1991, and held such

shares continuously until at least June 19, 1991, will receive not less than

$.50 nor more than $1.00 per share so purchased.  A Qualifying Class 4

Claimant that purchased shares of Columbia Common Stock on or after October 1,

1990, but no later than May 14, 1991, and held such shares continuously until

at least June 19, 1991, will receive not less than $1.50 nor more than $3.00

per share so purchased.  A Qualifying Class 4 Claimant that purchased shares

of Columbia Common Stock on or after March 1, 1990 and sold such shares on or

after March 31, 1991, but not later than June 18, 1991, will receive not less

than $.10 nor more than $.20 per share so purchased.

          (b)  A Qualifying Class 4 Claimant that purchased Columbia debt

securities on or after March 1, 1990, but not later than September 30, 1990,

or on or after May 15, 1991, but not later than June 18, 1991, and held such

debt securities continuously until at least June 19, 1991, will receive not

less than $.50 nor more than $1.00 for each $100 principal amount of 






















                                     -42-
<PAGE>   54

debt so  purchased.  A Qualifying Class 4 Claimant that purchased Columbia

debt securities on or after October 1, 1990, but not later than May 14, 1991,

and held such debt securities continuously until at least June 19, 1991, will

receive not less than $1.50 nor more than $3.00 for each $100 principal amount

of debt so purchased.  A Qualifying Class 4 Claimant that purchased Columbia

debt securities on or after March 1, 1990, and sold such debt securities on or

after March 31, 1991, but not later than June 18, 1991, will receive not less

than $.10 nor more than $.20 per $100 principal amount of debt so purchased.

     3.   Following the Supplemental Bar Date but prior to the approval of the

Disclosure Statement by the Bankruptcy Court, Columbia will calculate the

aggregate amount that would be payable to the Qualifying Class 4 Claimants

pursuant to the Offer of Settlement were each Qualifying Class 4 Claimant to

be paid the maximum amount offered to it under paragraph (2) above (the

"Maximum Proof of Claim Amount") and will adjust the Settlement Amount and the

amount to be paid to each Qualifying Class 4 Claimant as follows:

          (i) if the Maximum Proof of Claim Amount is $18 million or less, the

          Settlement Amount shall be the Maximum Proof of Claim Amount and

          each Qualifying Class 4 Claimant shall receive the maximum

          settlement amount offered to such Qualifying Class 4 Claimant in

          paragraph (2) above (the "Maximum Offer Amount"); 
























                                     -43-
<PAGE>   55

          (ii) if the Maximum Proof of Claim Amount exceeds $18 million but

          does not exceed $36 million, then the Settlement Amount shall be $18

          million and each Qualifying Class 4 Claimant shall receive an amount

          equal to the Maximum Offer Amount multiplied by a fraction, the

          numerator of which is $18 million and the denominator of which is

          the Maximum Proof of Claim Amount; and 



          (iii) if the Maximum Proof of Claim Amount exceeds $36 million, then

          Columbia may, at its option either (x) increase the Settlement

          Amount to the amount which is one-half of the Maximum Proof of Claim

          Amount, in which case each Qualifying Class 4 Claimant shall receive

          the minimum settlement amount offered to it in paragraph (2) above,

          provided, however, that Columbia may elect to pay to each Qualifying

          Class 4 Claimant pro-rata that portion of the Settlement Amount that

          exceeds $18 million in the form of shares of Columbia Common Stock

          or other debt or equity securities of Columbia having a value on the

          Effective Date equal to such excess or (y) to withdraw the Offer of

          Settlement in which case all Class 4 Claims shall be reclassified as

          Class 7 Claims.

Columbia shall file an amended Plan and Disclosure Statement prior to the

approval of the Disclosure Statement by the 






















                                     -44-
<PAGE>   56

Bankruptcy Court setting forth the adjusted Settlement Amount and the payment

to be offered to each Qualifying Class 4 Claimant.

     4.   Columbia shall have the option to withdraw the Offer of Settlement

if Qualifying Class 4 Claimants holding Claims representing at least 75% of

the Maximum Proof of Claim Amount do not vote in favor of the Plan.

     5.   If Columbia does not exercise its option to terminate the Offer of

Settlement, any Qualifying Class 4 Claimant voting in favor of the Plan will,

by execution of the ballot, have accepted the Offer of Settlement and shall

have its Class 4 Claim treated in the manner set forth above and will have

waived and released any and all claims of such Qualifying Class 4 Claimant

alleged in or which ought to have been alleged in the Securities Action

Litigation against each of the Contributors and against each other defendant

in the Securities Action, such waiver and release to become effective only

upon the payment to such Qualifying Class 4 Claimant of the amount offered to

it under the Offer of Settlement.

     No offer is made to Holders of Securities Action Claims other than

Qualifying Class 4 Claimants, and Holders who are not Qualifying Class 4

Claimants will receive no distribution under the Offer of Settlement.  Any

Complying Class 4 Claimant that is not a Qualifying Class 4 Claimant and any

Qualifying Class 4 Claimant that does not vote in favor of the Plan shall have

its Securities Action Claim reclassified to, and treated as, a Class 7 Claim.






















                                     -45-
<PAGE>   57

     Class 4 Claims shall be deemed impaired.

     5.   CLASS 5 - INTERCOMPANY CLAIMS

     Pursuant to the Columbia Omnibus Settlement, the Intercompany Claims

shall be settled and discharged in full.

     The Class 5 Claims are unimpaired.

C.   TREATMENT OF ASSUMED CLAIMS

     1.   CLASS 6.1 - INDEMNITY CLAIMS

     Each Class 6.1 Claim shall be paid (i) if Allowed on the Effective Date,

in full in cash on the Effective Date, and (ii) if not then Allowed, shall be

assumed and paid in the ordinary course.

     Class 6.1 Claims are unimpaired.

     2.   CLASS 6.2 - PBGC CLAIMS

     Columbia's secondary obligations to the PBGC for contributions to the

pension fund of Columbia's subsidiaries shall be assumed and unaffected by the

Plan.

     Class 6.2 Claims are unimpaired.

     3.   CLASS 6.3 - SHAWMUT GUARANTEE CLAIM 

     Columbia's secondary obligations to Shawmut Bank of Boston, N.A. shall be

assumed and unaffected by the Plan.

     The Class 6.3 Claim is unimpaired. 

D.   TREATMENT OF CLASS 7 - NON-SETTLING SECURITIES ACTION CLAIMS

     All Class 7 Claims will be assumed by Reorganized Columbia on the

Effective Date.  

     Class 7 Claims are unimpaired.
















                                     -46-
<PAGE>   58

E.   TREATMENT OF CLASS 8 - INTERESTS IN COLUMBIA COMMON STOCK

     Class 8 Interests may be affected by the Plan as a result of the issuance

of the DECS (to the extent not repurchased from the Take-Out Electors) and

possibly the issuance of additional shares of Columbia Common Stock.

     Class 8 Interests are deemed impaired.

IV.  PROVISIONS GOVERNING DISTRIBUTIONS

A.   TRANSACTIONS ON THE EFFECTIVE DATE

     The following transfers and transactions shall take place on the

Effective Date:

     1.   Reorganized Columbia shall take or cause to be taken all actions

which are necessary or appropriate to effect:

     (a)  the filing with the Secretary of State of the State of Delaware of

     an amended and restated certificate of incorporation substantially in the

     form of Exhibit A and certificates of designation with respect to the

     Preferred Stock and the DECS.

     (b)  authorization of the issuance of shares of the Preferred Stock and

     DECS to be issued under the Plan.

     (c)  the issuance of the New Indenture Securities.

     2.   Reorganized Columbia shall enter into the New Indenture.

     3.   Reorganized Columbia shall enter into one or more Disbursing Agent

Agreements.

     4.   If not previously entered into, Reorganized Columbia shall enter

into the Working Capital Facility and the Term Loan 


















                                     -47-
<PAGE>   59

Facility unless Columbia waives this condition to the Effective Date.

     5.   Reorganized Columbia shall make all cash payments required to be

made under the Plan on the Effective Date in respect of Allowed Claims other

than those in Class 3.1 or Class 3.2.

     6.   Reorganized Columbia shall deliver to the appropriate Disbursing

Agent or Disbursing Agents all consideration required to be paid on the

Effective Date to Holders of Allowed Claims in Class 3.1 and Class 3.2.

     7.   The Disbursing Agent or Disbursing Agents shall make all

distributions required to be made, pursuant to the Plan, on the Effective Date

to Holders of Allowed Claims in Class 3.1 and 3.2.

     8.   The Setoff Funds shall be distributed in accordance with the terms

of the Setoff Order and the interest earned and accrued on the Setoff Funds

shall be distributed to Reorganized Columbia.

     9.   Unless Columbia withdraws the Offer of Settlement as permitted by

the Plan, the Settlement Amount shall be distributed to the Qualifying Class 4

Claimants.

     10.  Reorganized Columbia shall adjust or replace the Kotaneelee Escrow

in accordance with the provisions of the Canada Sale Agreement.

     11.  The Stipulation of Dismissal with Prejudice of the Intercompany

Claims Litigation, conditioned only upon the 
























                                     -48-
<PAGE>   60

completion of payment by Reorganized TCO of all distributions payable on the

Effective Date of the TCO Plan (the "Stipulation of Dismissal With Prejudice")

shall have been filed with the United States District Court for the District

of Delaware.

     12.  The LESOP shall be terminated and the Columbia Common Stock held by

the LESOP Trustee shall be purchased by Reorganized Columbia in accordance

with the terms of the Plan.

     13.  Reorganized Columbia shall take any and all further actions

necessary or appropriate to effectuate the Plan.

B.   DISTRIBUTIONS ON UNCLASSIFIED CLAIMS AND CLAIMS IN CLASSES
     1, 2, 4, 6 AND 7

     Under the Plan, except as otherwise provided in the Plan or by Final

Order, distributions to Holders of (i) Unclassified Claims and Class 1, Class

2, Class 4, Class 6 and Class 7 Claims that are Allowed Claims as of the

Effective Date will be made by Columbia commencing on the Effective Date, in

accordance with the treatment provided under the Plan for such Claims and (ii)

distributions to Holders of any such Claims that become Allowed after the

Effective Date will be made, in the case of Unclassified Claims and Class 6

Claims, in the ordinary course of business as such Claims become Allowed and,

in the case of the remaining such Classes of Claims, within forty-five days

after the end of the Calendar Quarter in which such Claims become Allowed.  























                                     -49-
<PAGE>   61

C.   DISTRIBUTIONS ON CLASSES 3.1 AND 3.2 CLAIMS.

     1.   RECORD DATE

     As of the close of business on a date (the "Record Date") to be

determined by Columbia and notice of which shall have been given to Holders as

the Bankruptcy Court by Final Order shall direct, which date shall not be less

than ten nor more than thirty days prior to the Effective Date, all transfer

ledgers, transfer books, registers and any other records maintained by the

designated transfer agents in accordance with the Recordation Order with

respect to ownership of the Borrowed Money Instruments and the Borrowed Money

Claims arising therefrom or in connection therewith shall be closed, and for

purposes of the Plan, there shall be no further changes in the record Holders

of any Borrowed Money Instruments or any Borrowed Money Claim arising

therefrom or in connection therewith on such ledgers, books, registers or

records.  Columbia shall thereafter have no obligation to recognize any

transfer of any Borrowed Money Instrument or any Borrowed Money Claim arising

therefrom or in connection therewith but shall be entitled instead to

recognize and deal with, for all purposes under the Plan, only those Persons

that are Holders of Borrowed Money Instruments or any Borrowed Money Claim

arising therefrom or in connection therewith on the Record Date, as reflected

on such ledgers, books, registers or records.

     2.   SURRENDER OF INSTRUMENTS

     Each Holder of a Claim arising from an Auction Note, a Bid Note, a

Debenture, any note issued pursuant to the $500 Million 


















                                     -50-
<PAGE>   62

Loan Agreement other than the Auction Notes, and any note issued pursuant to

the $750 Million Loan Agreement (each, a "Surrender Instrument"), as a

condition to the delivery to such Holder of the distributions to which it is

entitled under the Plan, shall surrender the Surrender Instrument giving rise

to such Claim to the Person set forth opposite the name of such Surrender

Instrument in the table below:

<TABLE>
<CAPTION>
               Surrender Instrument      Person
               --------------------      ------
               <S>                       <C>
               Auction Notes             Columbia

               Bid Notes                 Columbia

               Debentures                Indenture Trustee

               Notes issued pursuant     Bank Agent 
               to the $500 Million 
               Credit Agreement (other
               than Auction Notes)

               Notes issued pursuant     Bank Agent
               to the $750 Million 
               Credit Agreement
</TABLE>

To the extent that such Holder is not the holder of record of such relevant

Surrender Instrument, such Holder must deliver to the specified Person,

together with the relevant Surrender Instrument, documents reasonably

satisfactory to Columbia evidencing succession of title from the record holder

thereof.  In the event that any such Surrender Instrument has been lost,

destroyed, stolen or mutilated, the Holder thereof may instead execute and

deliver an affidavit of loss and indemnity with respect thereto in form that

is customarily utilized for such purposes and that is reasonably satisfactory

to Columbia, together with, if Columbia so requests, a bond in form and


















                                     -51-
<PAGE>   63

substance (including, without limitation, amount) reasonably satisfactory to

Columbia.  Until a Holder of record on the Record Date, or its successor,

surrenders the relevant Surrender Instrument, or otherwise complies with the

foregoing provisions of this Section IV.C.2, the distribution to be made to

such Holder under the Plan shall not be so delivered to such Holder, and such

Holder shall have no rights under, or with respect to, the New Indenture, the

New Indenture Securities, the Preferred Stock or the DECS issuable to it or

the cash payable to it under the Plan.

     Procedures concerning the surrender of Surrender Instruments shall be

approved by Final Order of the Bankruptcy Court and notice thereof shall be

given to Holders of Class 3.1 and Class 3.2 Claims prior to the Effective

Date.

     3.   CANCELLATION OF SURRENDER INSTRUMENTS AND TERMINATION OF DEBT
          OBLIGATIONS

     Promptly upon surrender of a Surrender Instrument in accordance with

Section IV.C.2, such Surrender Instrument shall  be delivered to Reorganized

Columbia for cancellation.

     As of the Effective Date, upon the delivery by Reorganized Columbia to

the appropriate Disbursing Agent of all distributions to be made to Holders of

Allowed Claims in Classes 3.1 and 3.2 (other than the Repurchase Price), the

Borrowed Money Instruments, the $500 Million Credit Agreement, the $750

Million Credit Agreement, the 1961 Indenture except to the extent otherwise

provided in Section V.D, the Rate Swap Agreement, the Commercial Paper Master

Note representing the Commercial Paper 

















                                     -52-
<PAGE>   64

and any other instrument or document evidencing any Claims in Class 3.1 or

Class 3.2 shall be terminated, deemed null and void and of no further force

and effect and none of the Bank Agent, the Indenture Trustee, the LESOP

Trustee and the Holders or owners of the Borrowed Money Instruments shall have

any further obligations, in each case except as may be otherwise provided for

in any Disbursing Agent Agreement, and all Borrowed Money Claims and all

Claims arising pursuant to or in connection with the Borrowed Money

Instruments or any other document of instrument referred to in this paragraph

shall be deemed satisfied and discharged, and the Holders thereof shall have

no further rights against Columbia or Reorganized Columbia except that each

Holder of an Allowed Borrowed Money Claim shall have the right to receive from

the Disbursing Agent the consideration to which it is entitled under the Plan

upon compliance by such Holder with the terms of the Plan. 

     4.   DISTRIBUTIONS OF CASH, NEW DEBT INSTRUMENTS, PREFERRED STOCK AND
          DECS

     On the Effective Date, Reorganized Columbia shall deliver to the

Disbursing Agent, as agent for the Holders, (i) the Cash Consideration, if

any, (ii) the cash required to pay Allowed Class 3.1 Claims, (iii) the cash

necessary to make payments required in accordance with Section IV.C.5, (iv)

one duly issued and authenticated New Indenture Security for each Issue to be

issued under the Plan, payable to the Disbursing Agent, (v) one duly issued

certificate, registered in the name of the Disbursing Agent, for the number of

shares of DECS to be issued under the 



















                                     -53-
<PAGE>   65

Plan to Holders of Class 3.2 Claims, and (vi) one duly issued certificate,

registered in the name of the Disbursing Agent, for the number of shares of

Preferred Stock to be issued under the Plan to Holders of Class 3.2 Claims. 

On the Effective Date, or from time to time thereafter upon compliance with

the provisions of Section IV.C.2 in the case of Claims arising from Surrender

Instruments, the Disbursing Agent shall make all appropriate distributions of

such consideration in accordance with the Plan in respect of Allowed Class 3.1

Claims and Allowed Class 3.2 Claims.

     If the Take-Out Securities have an aggregate Liquidation Value of at

least $200 million, then:

          (a)  the Take-Out Securities shall be held by the Disbursing Agent

          and, if the Take-Out Offering is Completed within one hundred-eighty

          (180) days after the Effective Date or if Reorganized Columbia

          otherwise elects to repurchase the Take-Out Securities, the

          Disbursing Agent shall transfer and deliver the certificates

          representing the Take-Out Securities to Reorganized Columbia for

          repurchase.  Reorganized Columbia shall repurchase the Take-Out

          Securities from the Take-Out Electors and shall deliver the

          Repurchase Price to the Disbursing Agent and the Disbursing Agent

          shall distribute the Repurchase Price to the Take-Out Electors

          entitled thereto; and






















                                     -54-
<PAGE>   66

          (b)  if the Take-Out Offering is not Completed within one hundred-

          eighty (180) days after the Effective Date and Reorganized Columbia

          does not otherwise elect to repurchase the Take-Out Securities, the

          Disbursing Agent shall promptly deliver the Take-Out Securities to

          the Take-Out Electors entitled thereto.






















































                                     -55-
<PAGE>   67
     5.   CASH IN LIEU OF FRACTIONAL SHARES AND ODD LOTS; ROUNDING OF NEW
          INDENTURE SECURITIES

          (i)  Fractional shares of Preferred Stock or DECS will not be issued

or distributed.  Any Holder of an Allowed Class 3.2 Claim entitled, but for

this provision, to receive a fractional share of Preferred Stock or DECS,

shall, in lieu thereof, be paid cash in an amount equal to the Liquidation

Value of such fractional share.

         (ii)  Reorganized Columbia shall not be required to issue lots of

fewer than 100 shares of either Preferred Stock or DECS under the Plan.  Any

Holder of an Allowed Class 3.2 Claim entitled, but for this provision, to

receive fewer than 100 shares of Preferred Stock or DECS, shall, in lieu

thereof, be paid cash in an amount equal to the Liquidation Value of such

shares.

        (iii)  New Indenture Securities shall be issued only in denominations

of $1,000 or integral multiples thereof.  Any Holder of an Allowed Class 3.2

Claim that, but for this provision, would be entitled to receive a principal

amount of any Issue of New Indenture Securities of less than $1,000 or not

constituting an integral multiple of $1,000 shall, in lieu thereof, be paid

cash (i) in an amount equal to the principal amount of such New Indenture

Securities, in the former case, or (ii) in an amount equal to the excess of

the principal amount of such New Indenture Securities over the next lowest

number that is $1,000 or an integral multiple of $1,000, in the latter case.























                                     -56-
<PAGE>   68

D.   REORGANIZED COLUMBIA OR THIRD PARTY AS DISBURSING AGENT FOR CLAIMS

     Reorganized Columbia, as Disbursing Agent, or such third-party Disbursing

Agent as Reorganized Columbia may in its sole discretion employ, shall make

all distributions required in respect of Claims under the Plan.  Each such

Disbursing Agent shall serve without bond, and such third-party Disbursing

Agent shall be entitled to receive from Reorganized Columbia, without further

Bankruptcy Court approval, reasonable compensation for distribution services

rendered pursuant to the Plan and reimbursement of reasonable and necessary

out-of-pocket expenses incurred in connection with such services, on terms

acceptable to Reorganized Columbia.

E.   COSTS OF DISTRIBUTION

     Reorganized Columbia shall bear all costs associated with the

effectuation of the Plan, including but not limited to all costs of

distributions to Holders of Allowed Claims and the fees and expenses of the

Disbursing Agents in accordance with the respective Disbursing Agent

Agreements, provided, however, that any commissions and discounts incurred in

connection with the Take-Out Offering shall be paid from the proceeds of the

sale of the Take-Out Securities.

F.   DELIVERY OF DISTRIBUTIONS; UNCLAIMED DISTRIBUTIONS

     1.   DELIVERY OF DISTRIBUTIONS IN GENERAL

     Distributions to each Holder of an Allowed Unclassified Claim or a Class

1 Claim, Class 2 Claim, Class 4 Claim or Class 6.1 Claim shall be made (i) at

the address set forth on any proof 


















                                     -57-
<PAGE>   69

of Claim or amendment thereto Filed by such Holder, (ii) in lieu of the

address set forth in clause (i), at the address set forth in any written

notice of address change received by the relevant Disbursing Agent after the

Effective Date or (iii) at the address of such Holder reflected in the

Schedule of Liabilities if no proof of Claim has been Filed and the relevant

Disbursing Agent has not received a written notice of a change of address. 

Distributions to Holders of Allowed Class 3.1 Claims and Allowed Class 3.2

Claims shall be sent to the Persons and at the addresses set forth in the

records of the appropriate designated transfer agent maintained in accordance

with the Recordation Order, provided, however, that New Indenture Securities

to be delivered shall be delivered to The Depository Trust Company which shall

credit such New Indenture Securities to the accounts of its participants for

the benefit of the Persons entitled thereto pursuant to the Plan, in

accordance with the procedures of The Depository Trust Company.  Any Holder of

a Claim which accepts New Indenture Securities under the Plan agrees by such

acceptance that its New Indenture Securities shall be so held by and in the

name of The Depository Trust Company or its nominee.

     2.   UNCLAIMED DISTRIBUTIONS

     An Unclaimed Distribution shall be (A) any distribution made to the

Holder of an Allowed Claim pursuant to the Plan including, in the case of any

check or other instrument, the proceeds thereof, that (i) is returned to

Reorganized Columbia or the applicable Disbursing Agent as undeliverable or

because delivery 


















                                     -58-
<PAGE>   70

thereof is not accepted or (ii) in the case of a distribution made in the form

of a check, is not presented for payment within six months after it is sent to

the payee thereof, and (B) any distribution to be made to the Holder of an

Allowed Claim pursuant to the Plan in respect of a Surrender Instrument if

such Surrender Instrument is not surrendered to the appropriate Person in

accordance with Section IV.C.2 or the provisions of Section IV.C.2 are not

otherwise complied with within six months after the Effective Date.

     Any Unclaimed Distribution in the form of cash shall, until such time as

such Unclaimed Distribution becomes deliverable, be paid over by the

Disbursing Agent to Reorganized Columbia, which shall hold such cash and may

commingle it with its other funds.  Unclaimed Distributions in the form of a

New Indenture Securities, Preferred Stock or DECS shall be held by the

Disbursing Agent.  Notwithstanding any provision herein to the contrary, any

Holder of an Allowed Claim that does not claim an Unclaimed Distribution

within five years after the Confirmation Date shall not participate in any

further distributions under the Plan and shall be forever barred from

asserting any such Claim against Reorganized Columbia or its property.  At the

end of such five year period, the Unclaimed Distributions consisting of New

Indenture Securities, Preferred Stock, DECS and any dividends, interest and

other property received in exchange for or in respect of such New Indenture

Securities, Preferred Stock or DECS shall be delivered by the Disbursing Agent

to Reorganized 




















                                     -59-
<PAGE>   71

Columbia which shall retain the same as its property, free of any

restrictions, and may cancel any such New Indenture Securities, Preferred

Stock or DECS.  Any cash held by the Disbursing Agent in respect of such

Claims shall be delivered by said Disbursing Agent to Reorganized Columbia and

any such cash previously delivered to and being held by Reorganized Columbia

shall be the property of Reorganized Columbia, free of any restrictions. 

Nothing contained in the Plan shall require any Disbursing Agent or

Reorganized Columbia to attempt to locate any Holder of an Allowed Claim other

than by reviewing its own or Reorganized Columbia's records or the records

maintained in accordance with the Recordation Order.

G.   MEANS OF CASH PAYMENTS

     Cash payments made pursuant to the Plan shall be in United States dollars

by check drawn on a domestic bank selected by the Disbursing Agent making such

payment, or, at the option of such Disbursing Agent, by wire transfer from a

domestic bank; provided, however, that cash payments to foreign creditors, if

any, may be made, at the option of such Disbursing Agent, in such funds and by

such means as are necessary or customary in a particular foreign jurisdiction. 

All foreign currency costs and wire transfer costs incurred in making

distributions to any Holder of a Claim pursuant to the Plan shall be for the

account of such Holder.
























                                     -60-
<PAGE>   72

H.   SETOFFS

     Reorganized Columbia may set off against any Allowed Claim and the

distributions to be made pursuant to the Plan on account of such Claim, the

claims, rights and causes of action of any nature that Columbia or Reorganized

Columbia may hold against the Holder of such Allowed Claim; provided, however,

that neither the failure to effect such a setoff nor the allowance of any

Claim hereunder shall constitute a waiver or release by Columbia or

Reorganized Columbia of any such claim, right or cause of action that Columbia

or Reorganized Columbia may possess against such Holder.

     On the Effective Date, Morgan Guaranty Trust Company of New York shall,

in accordance with the terms of the Setoff Order, deliver the Setoff Funds to

the Disbursing Agent which shall distribute such Setoff Funds to Holders of

Allowed Class 3.1 Claims and Allowed Class 3.2 Claims that arise by virtue of

the $500 Million Credit Agreement (other than Auction Notes) and the $750

Million Credit Agreement in partial satisfaction of their Claims.  The

remaining amount of each of the Claims arising from the $500 Million Credit

Agreement and the $750 Million Credit Agreement shall be treated as a Class

3.2 Claim or, if the amount of the Claim as of the Petition Date as so reduced

is not greater than $15,000, as a Class 3.1 Claim.

     In accordance with the provisions of the Setoff Order, interest earned

and accrued on the Setoff Funds shall be 






















                                     -61-
<PAGE>   73

distributed by Morgan Guaranty Trust Company of New York to Columbia on the

Effective Date.

I.   EFFECTIVE DATE PAYMENTS OR DISTRIBUTIONS

     Any payment or distribution that is required under the Plan to be made on

the Effective Date or other date, if made as soon as practicable thereafter,

shall be deemed to have been made on the Effective Date or such other date, as

applicable.  All distributions required to be made pursuant to the Plan shall

be deemed to have been made upon the mailing of a check or transmission of a

wire transfer.  Any Holder of an Allowed Claim entitled to post-petition

interest in accordance with the Plan shall receive such post-petition interest

on the cash portion of the distribution to which it is entitled in an amount

calculated consistent with the Plan through the actual date of distribution of

the cash payments made with respect to such Claim, provided, however, that

with respect to Allowed Claims in respect of a Surrender Instrument which has

not been surrendered to the appropriate Person in accordance with Section

IV.C.2 or the provisions of Section IV.C.2 are not otherwise complied with,

such post-petition interest shall cease to accrue as of the Effective Date,

and, provided further, that no interest shall accrue from and after the

Effective Date on the Repurchase Price to be paid to Take-Out Electors.


























                                     -62-
<PAGE>   74

J.   LIMIT ON DISTRIBUTIONS

     Anything to the contrary contained in the Plan notwithstanding, no Holder

of a Claim shall receive under the Plan more than the Allowed amount of such

Claim, together with any post-petition interest to which such Holder may be

entitled pursuant to the Plan or any order of the Bankruptcy Court.  All

payments and distributions to be made under the Plan shall be made without

interest, penalty or late charge arising subsequent to the Petition Date,

except as expressly provided by the Plan or by Final Order.

K.   CONTINUATION OF CERTAIN RETIREMENT, WORKERS' COMPENSATION AND LONG-TERM
     DISABILITY BENEFITS

     Notwithstanding anything to the contrary herein contained, all employee

and retiree benefit plans or programs in existence as of the Petition Date

(other than the LESOP) shall continue after the Effective Date.

V.   MEANS FOR IMPLEMENTATION OF THE PLAN

A.   CONTINUED CORPORATE EXISTENCE AND VESTING OF ASSETS IN REORGANIZED
     COLUMBIA

     Columbia shall continue to exist after the Effective Date as Reorganized

Columbia, a Delaware corporation, with all the rights and powers of a

corporation under Delaware and other applicable law, without prejudice to any

thereof, subject to the terms and provisions of this Plan and the Confirmation

Order.  Except as otherwise provided in the Plan, on or after the Effective

Date, all property of the Estate, and any property acquired by Columbia or

Reorganized Columbia under any provisions of the Plan, shall 




















                                     -63-
<PAGE>   75

vest in Reorganized Columbia, free and clear of any and all Claims, liens,

charges and other encumbrances.  On and after the Effective Date, Reorganized

Columbia may operate its business and may use, acquire and dispose of property

and compromise or settle any claims against it without supervision or approval

by the Bankruptcy Court and free of any restrictions of the Bankruptcy Code or

Bankruptcy Rules, other than those restrictions expressly imposed by the Plan

or the Confirmation Order.  Without limiting the foregoing, Reorganized

Columbia may pay the charges that it incurs on or after the Effective Date for

professional fees, disbursements, expenses or related support services without

application to the Bankruptcy Court.  

B.   CORPORATE GOVERNANCE, DIRECTORS AND OFFICERS

     1.   CERTIFICATE OF INCORPORATION

     On the Effective Date, the certificate of incorporation of Reorganized

Columbia shall be amended and restated to read in its entirety as set forth in

Exhibit A.  The certificate of incorporation as so amended shall, among other

things, authorize the issuance of up to twenty million shares of Preferred

Stock and prohibit the issuance of non-voting equity securities to the extent

required by section 1123(a) of the Bankruptcy Code.  The Preferred Stock and

the DECS shall be deemed voting securities for purposes of section 1123(a) of

the Bankruptcy Code but shall not be deemed voting securities for purposes of

the Public Utility Holding Company Act.  After the Effective Date, Reorganized

Columbia may further amend and restate its 




















                                     -64-
<PAGE>   76

certificate of incorporation or by-laws as permitted by the Delaware General

Corporation Law.

     2.   DIRECTORS AND OFFICERS OF REORGANIZED COLUMBIA

     Those persons serving as the directors and officers of Columbia as of the

date hereof will, subject to changes in the ordinary course of business,

continue to serve in their same capacities on behalf of Reorganized Columbia

after Confirmation.

     3.   CORPORATE ACTION

     Upon the Effective Date, adoption by Reorganized Columbia of an amended

and restated certificate of incorporation and the other matters contemplated

by or provided for under the Plan involving the corporate structure of

Columbia or Reorganized Columbia or corporate action to be taken by or

required of either Columbia or Reorganized Columbia shall be deemed to have

occurred and be effective and all actions required or contemplated in order to

consummate the Plan shall be authorized and approved in all respects without

any requirement of further action by stockholders or directors of Columbia or

Reorganized Columbia.

     4.   LESOP

     On the Effective Date, the LESOP shall be terminated and Columbia, in

accordance with the terms of the LESOP Trust, shall purchase the shares of

Columbia Common Stock held by the LESOP Trustee thereunder for cash at the

most recently available closing price for such shares.  Such cash purchase

price shall be delivered by Columbia to the LESOP Indenture Trustee, which

shall distribute such purchase price pro rata to the Holders of the 
















                                     -65-
<PAGE>   77

LESOP Debentures.  Such cash purchase price shall be applied, first, to any

post-petition interest due on the Claims arising under the LESOP Guaranty and,

thereafter, to the Allowed amount of such Claims.  The remaining amount of

each of the Claims arising from the LESOP Guaranty, after taking into account

such distribution, shall be treated as a Class 3.2 Claim or, if the amount of

such Claim as of the Petition Date as so reduced is not greater than $15,000,

as a Class 3.1 Claim.

C.   PRESERVATION OF RIGHTS OF ACTION

     Except as provided elsewhere in the Plan or in any contract, instrument,

release, indenture or other agreement or document entered into or created in

connection with the Plan, in accordance with section 1123(b) of the Bankruptcy

Code, Reorganized Columbia shall retain and may enforce any claims, rights and

causes of action that either Columbia or its Estate may hold against any

entity and shall retain the right to prosecute all adversary proceedings

asserting Avoidance Claims that are pending before the Bankruptcy Court as of

the Effective Date.  All other Avoidance Claims will be released.  Reorganized

Columbia and its successors and assigns may pursue such retained claims,

rights or causes of action, as appropriate, in accordance with the best

interests of Reorganized Columbia.  

D.   RELEASE OF LIENS

     Except as otherwise provided in the Plan or in any contract, instrument,

release, indenture or other agreement or document created in connection with

the Plan, on the Effective Date, all 


















                                     -66-
<PAGE>   78

mortgages, deeds of trust, liens or other security interests against the

property or assets of the Estate shall be deemed discharged and satisfied, and

all the right, title and interest of any holder of any such mortgage, deed of

trust, lien or other security interest shall revert to Reorganized Columbia

and its successors and assigns, provided, however, that the Indenture Trustee

will retain whatever rights it has against the Holders of the Debentures and

the Medium Term Notes to payment of its accrued and unpaid compensation,

expenses and indemnification in accordance with the terms of the 1961

Indenture.

E.   COLUMBIA'S FUNDING OBLIGATIONS

     Columbia and Reorganized Columbia shall be obligated to fund all

distributions required to be made under the Plan, on the Effective Date or

otherwise, and in accordance with the provisions of the Plan, including but

not limited to, (i) required distributions to the Holders of Claims on the

Effective Date and (ii) distributions in respect of those obligations

expressly assumed by Reorganized Columbia under the Plan.

F.   DERIVATIVE CLAIMS

     The claims alleged in the Derivative Actions are property of the Estate

under section 541 of the Bankruptcy Code.  On March 15, 1995, the Columbia

Board of Directors formed a Special Litigation Committee of the Board to

determine whether the continued conduct of the Derivative Action is in the

best interests of Columbia.  Once the Special Litigation Committee has

completed its investigation and submitted its determination to 


















                                     -67-
<PAGE>   79

the Board, which determination shall be binding on the Board, the Plan shall

be amended to describe such determination and provide for the treatment of the

purported derivative claims arising from such Derivative Action.

G.   COLUMBIA OMNIBUS SETTLEMENT

     Pursuant to the TCO Plan, Reorganized TCO, with the consent of Columbia,

may opt to make a portion of certain payments to Rejecting Creditors, as such

term is defined in the TCO Plan, in the form of shares of Columbia Common

Stock.  If such option is elected and consented to by Columbia, Reorganized

Columbia shall authorize the issuance of and issue such shares of Columbia

Common Stock as may be necessary to fulfill Reorganized TCO's obligations

arising from the exercise of such option and make such shares of Columbia

Common Stock available to Reorganized TCO by (i) selling such shares to

Reorganized TCO for cash, in exchange for indebtedness or partly for cash and

partly in exchange for indebtedness or (ii) as otherwise determined by

Columbia.  

     Columbia and Reorganized Columbia shall be bound by the provisions of the

Columbia Customer Guaranty.  Notwithstanding any other provisions to the

contrary, the Columbia Customer Guaranty shall survive Confirmation of the

Plan.


























                                     -68-
<PAGE>   80

VI.  BAR DATES; PROCEDURES FOR ESTABLISHING ALLOWED CLAIMS
     AND FOR RESOLVING DISPUTED CLAIMS

A.   BAR DATE FOR OBJECTIONS TO NON-ADMINISTRATIVE CLAIMS

     Any non-Administrative Claim which was not Filed at least thirty days

prior to the date of the hearing on the Disclosure Statement may be objected

to by Columbia, Reorganized Columbia, the Equity Committee, or the Creditors'

Committee by the later of (i) the Effective Date or (ii) sixty days after a

proof of Claim with respect to such Claim has been Filed.  Any such Claim that

has not been objected to on or prior to such date shall be an Allowed Claim in

the appropriate Class.

B.   BAR DATES FOR CERTAIN ADMINISTRATIVE CLAIMS

     1.   PROFESSIONAL CLAIMS 

     Professionals or other entities requesting compensation or reimbursement

of expenses pursuant to section 503(b) of the Bankruptcy Code for services

rendered before the Effective Date (including compensation requested pursuant

to section 503(b)(4) of the Bankruptcy Code by any Professional or other

entity for making a "substantial contribution" in the Reorganization Case)

shall File and serve on Reorganized Columbia, the U.S. Trustee and the Fee

Examiner an application for final allowance of compensation and reimbursement

of expenses no later than thirty days after the Effective Date.  Objections to

such applications must be Filed and served on Reorganized Columbia, the U.S.

Trustee, the Fee Examiner and the requesting party no later than seventy days

after the Effective Date.  Payment of such 



















                                     -69-
<PAGE>   81

professional fees shall be subject to approval by the Bankruptcy Court

following a hearing.  Nothing herein shall be deemed a consent of Columbia to

the payment of any post-petition interest on any such compensation or

reimbursement.

     2.   BAR DATE FOR ADMINISTRATIVE CLAIMS

          Bar dates for Administrative Claims arising from the rejection of

executory contracts or unexpired leases shall be established as set forth in

Section VII.C.

C.   AUTHORITY TO PROSECUTE OBJECTIONS

     Subject to any objections to applications made in accordance with Section

VI.B.1, after the Effective Date, only Reorganized Columbia shall have the

authority to File objections, and shall have authority to settle, compromise,

withdraw or litigate to judgment objections to Claims Filed by it, upon notice

to the party that had made the Claim and subject to the approval of the

Bankruptcy Court. 

D.   OBJECTION TO CLAIMS

     Columbia shall have until the 120th day following the Effective Date to

object to any Claims asserted by any Holder.

VII. TREATMENT OF EXECUTORY CONTRACTS AND
     UNEXPIRED LEASES; ADDITIONAL BAR DATES

A.   GENERAL

     Except as otherwise provided in the Plan or in any contract, instrument,

release, indenture, or other agreement or document entered into in connection

with the Plan, on the Effective Date (i) all of Columbia's executory contracts

that have not been expressly assumed or rejected by order of the Bankruptcy

Court as 













                                     -70-
<PAGE>   82

of the Confirmation Date and that are listed on Exhibit E attached hereto

shall be assumed or rejected or otherwise dealt with as set forth on said

Exhibit and (ii) all other executory contracts that have not been so expressly

rejected shall be assumed.  

B.   PAYMENTS RELATED TO ASSUMPTION OF EXECUTORY CONTRACTS AND UNEXPIRED
     LEASES

     Any monetary amounts by which any executory contract or unexpired lease

to be assumed pursuant to the Plan is in default will be satisfied, pursuant

to section 1123(a)(5)(G) of the Bankruptcy Code, by payment of the defaulted

amount, together with such post-petition interest as may be due with respect

thereto, in cash on the Effective Date or on such other terms as are agreed to

by Columbia and the parties to such executory contract or unexpired lease.  In

the event of a dispute regarding (i) the amount of any cure payments, (ii) the

ability of Reorganized Columbia to provide "adequate assurance of future

performance" (within the meaning of section 365 of the Bankruptcy Code) under

the contract or lease to be assumed or (iii) any other matter pertaining to

assumption, the cure payments required by section 1123(a)(5)(G) of the

Bankruptcy Code will be made following the entry of a Final Order resolving

the dispute and approving the assumption.

C.   BAR DATE FOR REJECTION DAMAGES

     If the rejection of an executory contract or unexpired lease pursuant to

the Plan or the Confirmation Order gives rise to an Unsecured Claim or

Administrative Claim by the other party or 



















                                     -71-
<PAGE>   83

parties to such contract or lease, such Claim will be forever barred and will

not be enforceable against Columbia, Reorganized Columbia or its successors or

assigns, or the properties of any of them, unless, with respect to an

Administrative Claim, a request for payment, or, with respect to any other

Claim, a proof of Claim is Filed and served on Reorganized Columbia within the

later of (i) the time period established by the Bankruptcy Court in its Final

Order authorizing such rejection or (ii) thirty days after the Effective Date. 

Objections to any request for payment or proof of Claim shall be filed not

later than seventy days after the Effective Date.

D.   EXECUTORY CONTRACTS AND UNEXPIRED LEASES ENTERED INTO AND OTHER
     OBLIGATIONS INCURRED AFTER THE PETITION DATE

     Executory contracts and unexpired leases entered into and other

obligations incurred by Columbia after the Petition Date (unless an order of

the Bankruptcy Court has been entered authorizing rejection of such contracts

or leases) shall survive and remain unaffected by the Plan or entry of the

Confirmation Order.

VIII. CONDITIONS PRECEDENT TO CONFIRMATION
      AND CONSUMMATION OF THE PLAN

A.   CONDITIONS TO CONFIRMATION

     The Bankruptcy Court shall not enter the Confirmation Order unless and

until each of the following conditions has been satisfied or, to the extent

permitted, duly waived by Columbia pursuant to Section VIII.C:




















                                     -72-
<PAGE>   84

     1.   The Bankruptcy Court has entered an order, pursuant to section 1129

of the Bankruptcy Code, confirming the TCO Plan. 

     2.   The Plan shall have been approved by the Securities and Exchange

Commission under the Public Utility Holding Company Act of 1935 and such

Commission shall have approved all transactions contemplated by the TCO Plan

which require its approval.

     3.   There has been no material adverse change to Columbia's business,

properties, financial condition, results of operations or business prospects

between the Plan Mailing Date and the Confirmation Date.  

     4.   No material environmental liability Claim shall have been Filed by

any entity, including, without limitation, any state or federal environmental

or regulatory agency, asserting actual or potential liability against Columbia

or against any affiliate or predecessor of Columbia for which Columbia may be 

liable, other than Claims Filed pursuant to consensual settlement agreements

between Columbia and such state or federal environmental or regulatory agency

or other governmental entity).

     5.   TCO and Columbia have received a ruling from the Internal Revenue

Service, in form and substance satisfactory to TCO and Columbia, to the effect

that payments made by TCO under the TCO Plan that are attributable to the

breach, termination or rejection of gas purchase contracts are deductible when

paid by TCO for Federal income tax purposes.

     6.   The Plan shall not have been amended, modified, waived, supplemented

or withdrawn without the consent of Columbia, after 


















                                     -73-
<PAGE>   85

consultation with the Creditors' Committee and the Equity Committee.

     7.   Each of Moody's Investors Service, Inc. and Standard & Poor's

Ratings Group shall have confirmed that each Issue of the New Indenture

Securities, upon its issuance in accordance with the Plan, shall be rated

investment grade.

     8.   Qualifying Class 4 Claimants holding Securities Action Claims

accounting for at least 75% of the Maximum Proof of Claim Amount have accepted

the Offer of Settlement.

B.   CONDITIONS TO EFFECTIVE DATE

     The Plan shall not be consummated and the Effective Date shall not occur

unless and until each of the following conditions has been satisfied or, to

the extent permitted, duly waived by Columbia pursuant to Section VIII.C:

     1.   The Confirmation Order shall not have been vacated, reversed or

stayed.

     2.   The Bankruptcy Court shall have confirmed the TCO Plan and the order

with respect to such confirmation shall not have been vacated, reversed or

stayed.  The TCO Plan shall have become effective on terms consistent with the

Plan and without any amendments to which Columbia shall not have consented.

     3.   The order of the Securities and Exchange Commission approving, under

the Public Utility Holding Company Act of 1935, the Plan and all transactions

contemplated by the TCO Plan which require its approval shall not have been

vacated, reversed or stayed.




















                                     -74-
<PAGE>   86

     4.   There shall have been no material adverse change to Columbia's

business, properties, financial condition, results of operations or business

prospects between the Confirmation Date and the Effective Date.

     5.   Any condition to Confirmation described in Section VIII.A that is

waived by Columbia as permitted by Section VIII.C and that, at the time of

such waiver, Columbia elects to have become a condition to the consummation of

the Plan, shall have been satisfied or, if waivable, waived.

     6.   Reorganized Columbia shall have entered into the New Indenture, the

Working Capital Facility and the Term Loan Facility, each of such agreements

shall be in effect and the full amount of each such Facility shall be

available for borrowing by Columbia.

     7.   The Stipulation of Dismissal With Prejudice shall have been filed

with the United States District Court for the District of Delaware.

     8.   Neither Moody's Investors Service, Inc. nor Standard & Poor's Rating

Group shall have withdrawn or changed its previously delivered confirmation

that each Issue of the New Indenture Securities, upon its issuance in

accordance with the Plan, shall be rated investment grade; and neither of

those rating agencies shall have put Columbia on "credit watch" with negative

implications.

     9.   The Effective Date shall occur on or before June 28, 1996.
























                                     -75-
<PAGE>   87

C.   WAIVER OF CONDITIONS TO CONFIRMATION OR EFFECTIVE DATE

     Each of the conditions set forth in Sections VIII.A and VIII.B may be

waived in whole or in part by Columbia at any time in its discretion, provided

that (i) the condition numbered 2 in Section VIII.A may be waived only if

Columbia elects to have such condition become a condition to the Effective

Date and may not be waived as a condition to the Effective Date, (ii) the

conditions numbered 4 and 5 in Section VIII.A may be waived only if Columbia

elects to have such conditions become conditions to the Effective Date, (iii)

the condition numbered 8 and 9 in Section VIII.B may be waived by Columbia

only if consented to by the Equity Committee and the Creditors' Committee and

(iv) none of the conditions set forth in Sections VIII.A and VIII.B may be

waived without the Equity Committee and the Creditors' Committee having been

given prior notice thereof and an opportunity to be heard.  To be effective,

any such waiver and consent must be in writing and Filed.   If condition

numbered 5 in Section VIII.A has not been satisfied by December 15, 1995, then

Columbia and TCO shall, by December 31, 1995, (a) either waive the receipt of

such ruling as a condition to Confirmation or (b) revoke the Plan.  The

failure of a condition to have been satisfied may be asserted by Columbia

regardless of the circumstances giving rise to the failure of such condition

to be satisfied (including, but not limited to, any action or inaction by

Columbia or TCO).  Columbia's failure to exercise any of the foregoing rights

shall not be deemed a waiver of any other rights and each such right 




















                                     -76-
<PAGE>   88

shall be deemed an ongoing right, which may be asserted at any time.

D.   EFFECT OF NON-OCCURRENCE OF CONDITIONS TO EFFECTIVE DATE

     Each of the conditions to the Effective Date set forth in the Plan must

be satisfied or duly waived by Columbia or other appropriate parties in

accordance with the Plan by June 28, 1996.  If the Confirmation Order is

vacated, whether prior to or subsequent to the Effective Date, the Plan,

including the discharge of Claims pursuant to section 1141 of the Bankruptcy

Code, and the assumptions or rejections of executory contracts or unexpired

leases pursuant to Section VII.A, unless modified, supplemented or amended in

accordance with the provisions of Chapter 11 such that the Confirmation Order

is reinstated or a new Confirmation Order is entered, shall be null and void

in all respects.  In the event the Confirmation Order is so vacated, nothing

contained in the Plan shall (i) constitute a waiver or release of any Claim by

or against, or any Interests in, Columbia or TCO, (ii) prejudice in any manner

the rights of Columbia or TCO or (iii) constitute an admission against

Columbia or TCO.

IX.  CONFIRMABILITY AND SEVERABILITY
     OF THE PLAN AND CRAMDOWN

A.   CONFIRMABILITY AND SEVERABILITY OF THE PLAN

     Columbia and the Plan must satisfy the confirmation requirements of

section 1129 of the Bankruptcy Code.  Columbia reserves the right to modify,

revoke, supplement or withdraw the Plan, in whole or in part, in its sole

discretion.  A 



















                                     -77-
<PAGE>   89

determination by the Bankruptcy Court that the Plan is not confirmable

pursuant to section 1129 of the Bankruptcy Code shall not limit or affect

Columbia's ability to modify or supplement the Plan to satisfy the

confirmation requirements of said section 1129.

B.   CRAMDOWN

     Columbia requests Confirmation under section 1129(b) of the Bankruptcy

Code if any impaired Class does not accept the Plan pursuant to section 1126

of the Bankruptcy Code.  Columbia reserves the right to modify the Plan if

necessary to obtain Confirmation pursuant to section 1129(b) of the Bankruptcy

Code.

X.   DISCHARGE, RELEASES, SETTLEMENT OF CLAIMS AND INJUNCTION

A.   DISCHARGE OF CLAIMS AND TERMINATION OF INTERESTS

     Except as otherwise expressly provided in the Plan or in the Confirmation

Order, the Confirmation Date operates as a discharge, pursuant to section

1141(d) of the Bankruptcy Code, effective as of the Effective Date, of all

debts of, Claims against and Interests in Columbia that arose prior to the

Confirmation Date including, without limitation, any Claims for interest

accrued on Claims from the Petition Date.  Without limiting the generality of

the foregoing, on the Effective Date, Columbia shall be discharged from any

debt that arose prior to the Confirmation Date and from all debts of the kind

specified in sections 502(g), 502(h) or 502(i) of the Bankruptcy Code, whether

or not (i) a proof of Claim based on such debt was Filed pursuant to section

501 of the Bankruptcy Code, (ii) a Claim based on such 


















                                     -78-
<PAGE>   90

debt is an Allowed Claim pursuant to section 502 of the Bankruptcy Code or

(iii) the Holder of a Claim based on such debt has voted to accept the Plan. 

     As of the Confirmation Date, except as otherwise specifically provided in

the Plan or Confirmation Order, all entities shall be precluded from asserting

against Columbia, Reorganized Columbia, or their respective successors or

assigns, or the properties of any of them, any other or further Claims, debts,

rights, causes of action, liabilities or equity interests based upon any act,

omission, transaction or other activity of any kind or nature that occurred

prior to the Confirmation Date.  In accordance with the foregoing, except as

specifically provided in the Plan or Confirmation Order, the Confirmation

Order shall be a judicial determination of discharge of all such Claims and

other debts and liabilities against Columbia, pursuant to sections 524 and

1141 of the Bankruptcy Code, and such discharge shall void any judgment

obtained against Columbia at any time, to the extent that such judgment

relates to a discharged Claim.

B.   INJUNCTION

     As of the Confirmation Date, except as provided in the Plan or

Confirmation Order, all Persons that have held, currently hold or may hold a

Claim or other debt or liability that is discharged pursuant to the terms of

the Plan are permanently enjoined from taking any of the following actions on

account of any such discharged Claims, debts or liabilities, other than

actions brought to enforce any rights or obligations under the Plan:  (i)




















                                     -79-
<PAGE>   91

commencing or continuing in any manner any action or other proceeding against

Columbia, Reorganized Columbia or their respective properties; (ii) enforcing,

attaching, collecting or recovering in any manner any judgment, award, decree

or order against Columbia, Reorganized Columbia or their respective

properties; (iii) creating, perfecting or enforcing any lien or encumbrance

against Columbia, Reorganized Columbia or their respective properties; (iv)

asserting a setoff, right of subrogation or recoupment of any kind against any

debt, liability or obligation due to Columbia, Reorganized Columbia or their

respective properties; and (v) commencing or continuing, in any manner or in

any place, any action that does not comply with or is inconsistent with the

provisions of the Plan.  

C.   LIMITATION OF LIABILITY

     Columbia, Reorganized Columbia, their affiliates and their respective

directors, officers, employees, agents, representatives and Professionals

(acting in such capacity), and the Creditors' Committee, the Equity Committee

and their respective members, their agents and Professionals (acting in such

capacity), and their respective heirs, executors, administrators, successors

and assigns, shall neither have nor incur any liability to any Person for any

act taken or omitted to be taken in connection with or related to the

formulation, preparation, dissemination, implementation, confirmation or

consummation of the Plan, the Disclosure Statement or any contract,

instrument, release or other agreement or document 




















                                     -80-
<PAGE>   92

created or entered into, or any other act taken or omitted to be taken in

connection with the Plan or the Reorganization Case, provided, however, that

the foregoing provisions of this Section X.C shall have no effect on the

liability of any Person that would otherwise result from any such act or

omission to the extent that such act or omission is determined in a Final

Order to have constituted gross negligence or willful misconduct.

XI.  RETENTION OF JURISDICTION

     Notwithstanding the entry of the Confirmation Order and the occurrence of

the Effective Date, the Bankruptcy Court shall retain such jurisdiction over

the Reorganization Case after the Effective Date as is legally permissible,

including jurisdiction to:

     1.   Allow, disallow, determine, liquidate, classify, estimate, or

establish the allowability, priority or secured or unsecured status of, any

Claim, including the resolution of any request for payment of any

Administrative Claim, the resolution of any disputes concerning any Disbursing

Agent Agreement and the resolution of any and all objections to the allowance

or priority of Claims and of post-petition interest on such Claims (including

any Administrative Claim and any Priority Tax Claim);

     2.   Grant or deny any application for allowance of compensation or

reimbursement of expenses authorized pursuant to the Bankruptcy Code or the

Plan, for periods ending on or before the Effective Date;






















                                     -81-
<PAGE>   93

     3.   Resolve any matters related to the assumption or rejection of any

executory contract or unexpired lease to which Columbia is a party or with

respect to which Columbia may be liable and to hear, determine and, if

necessary, Allow any Claim arising therefrom;

     4.   Resolve any determinations which may be requested by Columbia or

Reorganized Columbia of unpaid or potential tax liability under sections 505

and 1146(d) of the Bankruptcy Code, including tax liability or such related

matters for any taxable year or portion thereof ending on or before the

Effective Date;

     5.   Resolve any matters relating to distributions to Holders of Allowed

Claims pursuant to the provisions of the Plan, including the assertion of set-

off rights by or against Columbia;

     6.   Decide or resolve any motions, adversary proceedings, contested or

litigated matters and any other matters and grant or deny any applications

that may be pending on the Effective Date, that arise in or relate to the

Reorganization Case or the Plan;

     7.   Enter such orders as may be necessary or appropriate to implement or

consummate the provisions of the Plan and all contracts, instruments,

releases, indentures and other agreements or documents created in connection

with the Plan or the Disclosure Statement, except as otherwise provided

herein;

     8.   Resolve any cases, controversies, suits or disputes that may arise

in connection with the consummation, interpretation or enforcement of the Plan

or any Person's obligations under or in connection with the Plan;
















                                     -82-
<PAGE>   94

     9.   Modify the Plan before, on or after the Effective Date pursuant to

section 1127 of the Bankruptcy Code or modify the Disclosure Statement or any

contract, instrument, release, indenture or other agreement or document

created in connection with the Plan or the Disclosure Statement, or remedy any

defect or omission or reconcile any inconsistency in any Bankruptcy Court

order, the Plan, the Disclosure Statement or any contract, instrument,

release, indenture or other agreement or document created in connection with

the Plan or the Disclosure Statement, in such manner as may be necessary or

appropriate to consummate the Plan, to the extent authorized by the Bankruptcy

Code;

     10.  Issue injunctions, enter and implement other orders or take such

other actions as may be necessary or appropriate to restrain interference by

any entity with consummation or enforcement of the Plan;

     11.  Enter and implement such orders as are necessary or appropriate if

the Confirmation Order is for any reason modified, stayed, reversed, revoked

or vacated;

     12.  Determine any other matters that may arise in connection with or

relate to the Plan, the Disclosure Statement, the Confirmation Order, any

Claim or any contract, instrument, release, indenture or other agreement or

document created in connection with the Plan or the Disclosure Statement,

except as otherwise provided herein;

     13.  Resolve any disputes or any other matters relating to the Securities

Action Claims; and


















                                     -83-
<PAGE>   95

     14.  Enter a final decree closing the Reorganization Case.

XII. MISCELLANEOUS PROVISIONS

A.   DISSOLUTION OF THE CREDITORS' COMMITTEE AND THE EQUITY COMMITTEE

     The Creditors' Committee and Equity Committee shall continue in existence

until the Effective Date for the principal purposes of participating in the

reconciliation and resolution of Disputed Claims and in overseeing the

implementation of the Plan.  On the Effective Date, the Creditors' Committee

and Equity Committee shall dissolve and the members of those Committees as

such shall be released and discharged from all rights and duties arising from

or related to the Reorganization Case.  The Professionals retained by the

Creditors' Committee and Equity Committee and the members thereof shall not be

entitled to compensation or reimbursement of expenses for any services

rendered after the Effective Date, except for services rendered and expenses

incurred in connection with any applications for allowance of compensation and

reimbursement of expenses pending on the Effective Date or Filed and served

after the Effective Date.

B.   MODIFICATION OF THE PLAN

     Subject to the restrictions on modifications set forth in section 1127 of

the Bankruptcy Code, Columbia reserves the right to alter, amend, supplement

or modify the Plan before its substantial consummation.
























                                     -84-
<PAGE>   96

C.   REVOCATION OF THE PLAN

     Columbia reserves the right to revoke or withdraw the Plan prior to the

Confirmation Date.  If Columbia revokes or withdraws the Plan, or if

Confirmation does not occur, then the Plan shall be null and void ab initio in

all respects, and nothing contained in the Plan shall:  (i) constitute a

waiver or release of any claims by or against, or any interests in, Columbia

or TCO, (ii) prejudice in any manner the rights of Columbia or TCO or (iii)

constitute an admission against Columbia or TCO.

D.   SEVERABILITY OF PLAN PROVISIONS

     If any term or provision of the Plan is held by the Bankruptcy Court

prior to or at the time of Confirmation to be invalid, void or unenforceable,

the Bankruptcy Court shall have the power to alter and interpret such term or

provision to make it valid or enforceable to the maximum extent practicable,

consistent with the original purpose thereof, and such term or provision shall

then be applicable as so altered or 


































                                     -85-
<PAGE>   97

interpreted.  In the event of any such holding, alteration, or interpretation,

the remainder of the terms and provisions of the Plan may, at Columbia's

option, remain in full force and effect and not be deemed affected, impaired

or invalidated by such holding, alteration or interpretation.  However,

Columbia reserves the right not to proceed to Confirmation or consummation of

the Plan if any such ruling occurs.  The Confirmation Order shall constitute a

judicial determination and shall provide that each term and provision of the

Plan, as it may have been altered or interpreted in accordance with the

foregoing, is valid and enforceable pursuant to its terms.

E.   SUCCESSORS AND ASSIGNS

     The rights, benefits and obligations of any Person named or referred to

in the Plan shall be binding on, and shall inure to the benefit of, any heir,

executor, administrator, successor or assign of such Person.

F.   SERVICE OF DOCUMENTS ON COLUMBIA OR REORGANIZED COLUMBIA

     Any pleading, notice or other document required by the Plan to be served

on or delivered to Columbia or Reorganized Columbia shall be sent by first

class U.S. mail, postage prepaid to:

               The Columbia Gas System, Inc.
               20 Montchanin Road
               Wilmington, Delaware 19807-0020
               Attention: Tejinder S. Bindra
                          Edmond M. Ianni

with copies to:

               Stroock & Stroock & Lavan
               Seven Hanover Square
               New York, New York  10004-2696
               Attention:  Lewis Kruger
                           Robin E. Keller 
                       
               Cravath, Swaine & Moore
               825 Eighth Avenue
               New York, New York  10019-7475
               Attention:  John E. Beerbower
                           Gregory M. Shaw

               Young, Conaway, Stargatt & Taylor
               11th Floor - Rodney Square North
               P.O. Box 39
               Wilmington, Delaware  19899-0391
               Attention:  James L. Patton, Jr.




                                     -86-
<PAGE>   98

G.   PAYMENT AND WITHHOLDING OF TAXES

     Except as otherwise specifically provided in the Plan, (i) to the extent

that any distribution made pursuant to the Plan includes or is deemed to

include the income (or an amount equal to the income) earned on funds used to

provide such distribution, the amount of the distribution shall be reduced by

the amount of income taxes payable with respect to such income, (ii) if any of

the income referred to in clause (i) is reportable by Columbia (or

attributable to Columbia on a consolidated tax return), Columbia shall be

reimbursed out of such funds for the amount of income taxes payable on such

income, and (iii) all distributions made pursuant to the Plan shall, where

applicable, be subject to information reporting to appropriate governmental

authorities and to withholding of taxes.  For purposes of clauses (i) and (ii)

of the preceding sentence, the amount of income taxes payable with respect to

income earned on such funds shall be calculated by multiplying (x) the amount

of the income (net of any deductions attributable to such income) by (y) the

highest marginal federal, state and local income tax rates for corporations

applicable to such income (as adjusted for any deductions for state and local

income taxes).




























                                     -87-
<PAGE>   99

CONFIRMATION REQUEST

     Columbia hereby requests Confirmation of the Plan pursuant to Section

1129(a) or Section 1129(b) of the Bankruptcy Code (in the event the Plan is

not accepted by each of those Classes of Claims and Interests entitled to

vote).

Dated:  Wilimington, Delaware
        April 17, 1995
        


                                        Respectfully submitted,

                                        THE COLUMBIA GAS SYSTEM, INC.


                                        By:/s/ JOHN H. CROOM           
                                           ---------------------------------
                                           John H. Croom
                                           Chairman and Chief Executive
                                           Officer








































<PAGE>   100
Schedule 3.2





<PAGE>   101
                                 SCHEDULE 3.2
                                      
                     POST-PETITION INTEREST CALCULATIONS
                           FOR CLASS 3.2 CLAIMS(1)
                                      

     (i)  DEBENTURE CLAIMS:  Each Holder of an Allowed Claim arising under a

     Debenture shall be entitled to receive post-petition interest equal to

     the sum of (i) simple interest on the principal amount of such Debenture

     outstanding from time to time, assuming all sinking fund payments due

     after the Petition Date had been made as required by the 1961 Indenture,

     from the Petition Date to the date such Debenture would have matured by

     its terms in the absence of default, at the rate of interest provided for

     in such Debenture in the absence of default, and (ii) simple interest on

     the amount of each payment of interest and principal, including each

     sinking fund payment and the payment of principal due upon maturity, that

     was required to be made after the Petition Date to such maturity date in

     respect of such Debenture and was not made when due, from the date such

     payment was required to be made through the Effective Date, at the rate

     of 8% per annum.  No call premiums shall be paid.  

     (ii) $500 MILLION CREDIT AGREEMENT CLAIMS:  Each Holder of an Allowed

     Claim arising under the $500 Million Credit Agreement shall be entitled

     to receive post-petition interest equal to the sum of (i) simple interest

     on the



















                    
- ------------------
(1)   All defined terms contained in this Schedule 3.2 are defined in the body
      of the Plan.

                                     -1-
<PAGE>   102

     unpaid principal amount of the obligation giving rise to such Claim, from

     the Petition Date to the Effective Date, at a rate equal to the six-month

     LIBOR rate plus 1.25% per annum, and (ii) simple interest on the amount

     of each payment of interest that was required to be made after the

     Petition Date in respect of such obligation and was not made when due,

     from the date such payment was required to be made to the Effective Date,

     at the same rate.  Interest payments will be deemed to have been required

     at regular six month intervals from the Petition Date to the Effective

     Date as if there had been no default with the first such payment deemed

     to have been required on January 31, 1992.  

     (iii)  $750 MILLION CREDIT AGREEMENT CLAIMS:  Each Holder of an Allowed

     Claim arising under the $750 Million Credit Agreement shall be entitled

     to receive post-petition interest equal to the sum of (i) simple interest

     on the unpaid principal amount of the obligation giving rise to such

     Claim, from the Petition Date to the Effective Date, at a rate equal to

     the six-month LIBOR rate plus 2% per annum, and (ii) simple interest on

     the amount of each payment of interest that was required to be made after

     the Petition Date in respect of such obligation and was not made when

     due, from the date such payment was required to be made to the Effective

     Date, at the same rate.  Interest payments will be deemed to have been

     required at regular six month intervals from the Petition Date to the

     Effective Date as if




















                                     -2-
<PAGE>   103

     there had been no default with the first such payment deemed to have been

     required on January 31, 1992.  

     (iv)  COMMERCIAL PAPER CLAIMS:  Each Holder of an Allowed Claim arising

     under Commercial Paper shall be entitled to receive post-petition

     interest equal to the sum of (i) simple interest on the unpaid principal

     of such Commercial Paper from the Petition Date to the date such

     Commercial Paper would have matured by its terms in the absence of

     default, at the imputed rate of interest provided for in such Commercial

     Paper in the absence of default, (ii) simple interest on such unpaid

     principal from such maturity date to the Effective Date, at a rate equal

     to the six-month LIBOR rate plus 2% per annum, and (iii) simple interest

     on the amount of each payment of interest that was required to be made

     after the Petition Date in respect of such Commercial Paper and was not

     made when due, from the date such payment was required to be made to the

     Effective Date, at the same rate.  Interest payments will be deemed to

     have been required at regular six-month intervals from the respective

     maturity dates referred to above to the Effective Date as if there had

     been no default with the first such payment deemed to have been required

     on January 31, 1992.  

     (v)  BID NOTE CLAIMS:  Each Holder of an Allowed Claim arising under a

     Bid Note shall be entitled to receive post-petition interest equal to the

     sum of (i) simple interest on the unpaid principal amount of the Bid Note

     giving rise to such Claim, from the Petition Date to the Effective Date

     at
















                                     -3-
<PAGE>   104

     a rate equal to the six-month LIBOR rate plus 2% per annum and (ii)

     simple interest on the amount of each payment of interest that was

     required to be made after the Petition Date in respect of such Bid Note

     and was not made when due, from the date such payment was required to be

     made to the Effective Date, at the same rate.  Interest payments will be

     deemed to have been required at regular six-month intervals from the

     Petition Date to the Effective Date as if there had been no default with

     the first such payment deemed to have been required on January 31, 1992.

     (vi) AUCTION NOTE CLAIMS:  Each Holder of an Allowed Claim arising under

     an Auction Note shall be entitled to receive post-petition interest equal

     to the sum of (i) simple interest on the unpaid principal amount of the

     Auction Note giving rise to such Claim, from the Petition Date to the

     Effective Date, at a rate equal to the six-month LIBOR rate plus 2% per

     annum, and (ii) simple interest on the amount of each payment of interest

     that was required to be made after the Petition Date in respect of such

     Auction Note and was not made when due, from the date such payment was

     required to be made to the Effective Date, at the same rate.  Interest

     payments will be deemed to have been required to be made at regular six-

     month intervals from the Petition Date to the Effective Date as if there

     had been no default with the first such payment deemed to have been

     required on January 31, 1992.






















                                     -4-
<PAGE>   105

     (vii)  MEDIUM TERM NOTE CLAIMS:  Each Holder of an Allowed Claim arising

     under a Medium Term Note shall be entitled to receive post-petition

     interest equal to the sum of (i) simple interest on the unpaid principal

     amount of such Medium Term Note, from the Petition Date to the date such

     Medium Term Note would have matured by its terms in the absence of

     default, at the rate of interest provided for in such Medium Term Note in

     the absence of default, and (ii) simple interest on the amount of each

     payment of interest and principal, including the payment of principal due

     upon maturity, that was required to be made after the Petition Date to

     such maturity date in respect of such Medium Term Note and was not made

     when due, from the date such payment was required to be made to the

     Effective Date, at the rate of 8% per annum.  

     (viii)  LESOP CLAIMS:  Each holder of an Allowed Claim arising under the

     LESOP Guaranty shall be entitled to receive post-petition interest equal

     to the sum of (i) simple interest on the unpaid principal amount of the

     LESOP Debentures, assuming all sinking fund payments due after the

     Petition Date had been made as required by the LESOP Debentures from the

     Petition Date to the date such underlying obligation would have matured

     by its terms in the absence of default, and (ii) simple interest on the

     amount of each payment of interest and principal, including each sinking

     fund payment and the payment of principal due upon maturity, that was

     required to be made after the Petition




















                                     -5-
<PAGE>   106

     Date to such maturity date in respect of such underlying obligation and

     was not made when due, from the date such payment was required to be made

     to the Effective Date, at the rate of 8% per annum.  

     (ix)  RATE SWAP CLAIMS:  Each holder of an Allowed Claim arising under

     the Rate Swap Agreement shall be entitled to receive post-petition

     interest on the Termination Payment required to be made in respect of the

     obligation given rise to such Claim, from July 31, 1991 to the Effective

     Date at the federal funds rate plus 1% per annum, repriced and compounded

     daily.














































                                     -6-
<PAGE>   107

                                          
                    IN THE UNITED STATES BANKRUPTCY COURT 
                         FOR THE DISTRICT OF DELAWARE

_________________________________x
In re:                           :  Chapter 11
                                 :
The Columbia Gas System, Inc.    :  Case No. 91-803 (HSB)
                                 :
                 Debtor.         :
_________________________________x                 



                DISCLOSURE STATEMENT PURSUANT TO SECTION 1125
            OF THE BANKRUPTCY CODE FOR THE PLAN OF REORGANIZATION
            OF THE COLUMBIA GAS SYSTEM, INC. DATED APRIL 17, 1995


                              Respectfully Submitted,

                              STROOCK & STROOCK & LAVAN
                              Lewis Kruger
                              Robin E. Keller
                              Seven Hanover Square
                              New York, New York  10004-2594
                              (212) 806-5400

                              CRAVATH, SWAINE & MOORE
                              John F. Hunt
                              John E. Beerbower
                              825 Eighth Avenue 
                              New York, New York  10019-7475
                              (212) 474-1000

                              YOUNG, CONAWAY, STARGATT & TAYLOR
                              James L. Patton, Jr.
                              11th Floor - Rodney Square North
                              P.O. Box 391
                              Wilmington, Delaware  19899-0381
                              (302) 571-6600

                              Co-Counsel for The Columbia Gas
                                System, Inc.


THIS DISCLOSURE STATEMENT HAS NOT BEEN APPROVED BY THE BANKRUPTCY COURT FOR
CIRCULATION TO CREDITORS OR FOR USE IN THE SOLICITATION OF VOTES ON THE PLAN
OF REORGANIZATION OF THE COLUMBIA GAS SYSTEM, INC.   

<PAGE>   108

                              TABLE OF CONTENTS

                                                                          Page
                                                                          ---- 

I.   SUMMARY  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    1
     A.   Introduction  . . . . . . . . . . . . . . . . . . . . . . . . .    1
     B.   Executive Summary . . . . . . . . . . . . . . . . . . . . . . .    6
          1.   The Debtors and their Businesses . . . . . . . . . . . . .    6
          2.   The Problems that Led to the Chapter 11 Petitions  . . . .    8
          3.   The Debtors' Business Operations, Financial Performance
               and Prospects  . . . . . . . . . . . . . . . . . . . . . .   10
               a.   Columbia  . . . . . . . . . . . . . . . . . . . . . .   10
               b.   TCO . . . . . . . . . . . . . . . . . . . . . . . . .   12
          4.   Obstacles to Reorganization  . . . . . . . . . . . . . . .   13
          5.   The Cornerstone of the Columbia and TCO Plans: The
               Columbia Omnibus Settlement  . . . . . . . . . . . . . . .   17
          6.   Proposed Resolution or Treatment of Other Major
               Controversies in Columbia's Chapter 11 Proceedings . . . .   20
               a.   Intercompany Claims Litigation  . . . . . . . . . . .   20
               b.   Post-Petition Interest and Related Claims by
                    Unsecured Columbia Creditors  . . . . . . . . . . . .   20
               c.   Securityholder Lawsuits . . . . . . . . . . . . . . .   21
               d.   Assumption of Certain Claims  . . . . . . . . . . . .   23
          7.   Amendment to the Certificate of Incorporation  . . . . . .   23
     C.   Distributions Under The Plan  . . . . . . . . . . . . . . . . .   25
     D.   Conditions  . . . . . . . . . . . . . . . . . . . . . . . . . .   30
     E.   Conclusion  . . . . . . . . . . . . . . . . . . . . . . . . . .   31

II.  OVERVIEW OF THE PLAN..................................................  1
     A. Reorganized Columbia ..............................................  1
     B. Summary of Description of Classes and Distributions ...............  1
        TABLE OF SUMMARY DESCRIPTION OF CLASSES AND THEIR DISTRIBUTIONS ...  4
        1. Unclassified Claims ............................................  4
        2. Secured Claims..................................................  6
        3. Unsecured Claims................................................  6
        4. Securities Claims ..............................................  8
        5. Intercompany Claims ............................................  9
        6. Assumed Claims .................................................  9
        7. Interests and Rejecting Securities Action Claims ............... 10
        8. Interests ...................................................... 10
<PAGE>   109

                                                                          Page
                                                                          ----
III. BUSINESSES . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    1
     A.   Columbia's Historic Corporate Structure and Operation . . . . .    1
          1.  General . . . . . . . . . . . . . . . . . . . . . . . . . .    1
          2.   Columbia Businesses  . . . . . . . . . . . . . . . . . . .    2
               a.  Exploration and Production . . . . . . . . . . . . . .    2
               b.  Interstate Transmission  . . . . . . . . . . . . . . .    3
               c.  Local Distribution . . . . . . . . . . . . . . . . . .    3
               d.  Columbia Gas System Service Corporation  . . . . . . .    4
               e.  Other Energy Operations  . . . . . . . . . . . . . . .    4

     B.   Public Utility Holding Company Act Regulation and System
          Financing; SEC Approval Of The Columbia Plan  . . . . . . . . .    6
          1.   Regulation of Columbia by the SEC Under the HCA; External
               and Internal Columbia Financing  . . . . . . . . . . . . .    6
               a.  Regulatory Framework . . . . . . . . . . . . . . . . .    6
               b.  System External and Internal Financing . . . . . . . .    7
          2.   HCA Jurisdiction Over the Terms of the Columbia Plan . . .    9

IV.  SUMMARY OF SIGNIFICANT CLAIMS IN COLUMBIA'S CHAPTER 11 CASE AND
     THEIR SETTLEMENTS OR PROPOSED RESOLUTIONS  . . . . . . . . . . . . .    1
     A.   Borrowed Money Claims and the Negotiations and Settlement of
          Such Claims . . . . . . . . . . . . . . . . . . . . . . . . . .    1
     B.   The Intercompany Claims Litigation  . . . . . . . . . . . . . .    5
          1.   Stipulation and Order Concerning Prosecution of the
               Intercompany Claims  . . . . . . . . . . . . . . . . . . .    5
          2.   Intercompany Claims Litigation Proceedings . . . . . . . .    6
               a.   Allegations of Equitable Subordination  . . . . . . .    6
               b.   Allegations Seeking Recharacterization of Debt as
                    Equity  . . . . . . . . . . . . . . . . . . . . . . .    7
               c.   Allegations of Fraudulent Conveyances . . . . . . . .    7
               d.   Allegations of Voidable Reduction in Capital  . . . .    8
               e.   Allegations of Preference . . . . . . . . . . . . . .    8
          3.   Response of Columbia and CNR . . . . . . . . . . . . . . .    8
          4.   Pre-Trial Intercompany Claims Litigation
               Proceeding . . . . . . . . . . . . . . . . . . . . . . . .   10
          5.   The Intercompany Claims Trial  . . . . . . . . . . . . . .   11
          6.   Summary of the TCO Creditors' Committee Position . . . . .   12
          7.   Summary of Columbia's Analysis of the Intercompany Claims    15
          8.   Settlement of the Intercompany Claims  . . . . . . . . . .   17
     C.   The IRS Claims and Settlement . . . . . . . . . . . . . . . . .   18
     D.   Status and Treatment of Securities 
          Claims and Derivative Litigation  . . . . . . . . . . . . . . .   21
<PAGE>   110
                                                                          Page
                                                                          ---- 
          1.   Procedural History of The Actions  . . . . . . . . . . . .   21
          2.   Summary of Securities Action  Allegations. . . . . . . . .   24
          3.   Summary of Relevant Public Disclosures by Defendants . . .   29
          4.   Trends in Columbia's Stock Price . . . . . . . . . . . . .   36
          5.   The June 19, 1991, Announcement  . . . . . . . . . . . . .   36
          6.   Proposed Settlement  . . . . . . . . . . . . . . . . . . .   38
          7.   Derivative Claims  . . . . . . . . . . . . . . . . . . . .   43
     E.   The Columbia Omnibus Settlement . . . . . . . . . . . . . . . .   44
     F.   Other Claims  . . . . . . . . . . . . . . . . . . . . . . . . .   46

V.   DESCRIPTION OF THE COLUMBIA CHAPTER 11 PROCEEDINGS . . . . . . . . .    1
     A.   Commencement of the Case  . . . . . . . . . . . . . . . . . . .    1
          1.   First Day Orders . . . . . . . . . . . . . . . . . . . . .    1
          2.   Columbia's Retention of Professionals  . . . . . . . . . .    2
     B.   Debtor in Possession Financing  . . . . . . . . . . . . . . . .    2
     C.   Formation of Committees / Retention of Professionals  . . . . .    3
     D.   Meetings with Creditors' and Equityholders'
          Committees  . . . . . . . . . . . . . . . . . . . . . . . . . .    5
     E.   Administrative Fee Order/Appointment of Fee
          Examiner  . . . . . . . . . . . . . . . . . . . . . . . . . . .    6
     F.   Significant Proceedings in the Chapter 11 Case
          and Status of Related Claims  . . . . . . . . . . . . . . . . .    7
          1.   Cash Collateral Order  . . . . . . . . . . . . . . . . . .    7
          2.   Sale of Columbia Canada  . . . . . . . . . . . . . . . . .    9
          3.   Investment Guidelines Litigation . . . . . . . . . . . . .   13
          4.   Approval of Tax Sharing Procedures . . . . . . . . . . . .   15
          5.   LESOP Litigation . . . . . . . . . . . . . . . . . . . . .   17
          6.   Agreement With Banks Regarding Funds Subject
               to Setoff  . . . . . . . . . . . . . . . . . . . . . . . .   19
          7.   Extension of Exclusive Periods . . . . . . . . . . . . . .   20
          8.   Extension of Time to Remove Actions and File
               Proofs of Claim on Behalf of Creditors . . . . . . . . . .   21
          9.   Surety Bond Agreement  . . . . . . . . . . . . . . . . . .   21
          10.  Recapitalization of Subsidiaries . . . . . . . . . . . . .   22
          11.  Amendment of Employment Agreements With
               Senior Officers and Assumption of 
               Retention Agreements . . . . . . . . . . . . . . . . . . .   22
          12.  Employee Retention and Release Program . . . . . . . . . .   24
          13.  Data Room  . . . . . . . . . . . . . . . . . . . . . . . .   25
          14.  Loan to Columbia's Thrift Plan . . . . . . . . . . . . . .   26
          15.  Columbia's Long-Term Incentive Plan  . . . . . . . . . . .   28
          16.  Shareholder Rights Plan  . . . . . . . . . . . . . . . . .   29
     G.   Procedures Relating to Filing and Determination
          of Claims Process and Bar Date  . . . . . . . . . . . . . . . .   32
          1.   Bar Date/Claims Agent  . . . . . . . . . . . . . . . . . .   32
          2.   Claims Objection Procedures  . . . . . . . . . . . . . . .   33
<PAGE>   111
                                                                          Page
                                                                          ---- 
          3.   Claims Trading . . . . . . . . . . . . . . . . . . . . . .   34
     H.   Miscellaneous Litigation  . . . . . . . . . . . . . . . . . . .   35
          1.  Mountaineer . . . . . . . . . . . . . . . . . . . . . . . .   35
          2.  Kuntz Litigation  . . . . . . . . . . . . . . . . . . . . .   37

VI.  PLAN TREATMENT OF CLAIMS AND SUMMARY OF OTHER PLAN PROVISIONS  . . .    1
     A.   Classification and Treatment of Claims and Interests  . . . . .    1
          1.   Unclassified Claims  . . . . . . . . . . . . . . . . . . .    1
               a.   Administrative Claims . . . . . . . . . . . . . . . .    1
                    (i)  Professional Claims  . . . . . . . . . . . . . .    1
                    (ii) Post-Petition Operational Claims . . . . . . . .    3
                    (iii)     Assumed Executory Contract Claims . . . . .    3
                    (iv) U.S. Trustee's Fee Claims  . . . . . . . . . . .    5
                    (v)  Miscellaneous Administrative Claims  . . . . . .    5
               b.   Priority Tax Claims . . . . . . . . . . . . . . . . .    7
          2.   Classes of Claims and Interest . . . . . . . . . . . . . .    9
               a.   Class 1 - DIP Facility Claim  . . . . . . . . . . . .    9
               b.   Class 2 - Non-Borrowed Money Claims . . . . . . . . .    9
               c.   Class 3.1 Claims - Borrowed Money Convenience Claims    10
               d.   Class 3.2 - Borrowed Money Claims . . . . . . . . . .   11
               e.   Class 4 - Securities Action Claims  . . . . . . . . .   21
               f.   Class 5 Claims - Intercompany Claims  . . . . . . . .   25
               g.   Class 6 - Assumed Claims  . . . . . . . . . . . . . .   25
                    (i) Class 6.1 - Indemnity Claims  . . . . . . . . . .   25
                    (ii) Class 6.2 - PBGC Guarantee Claims  . . . . . . .   25
                    (iii) Class 6.3 - Shawmut Guarantee Claim . . . . . .   26
               h.   Class 7 - Non-Settling Securities Action Claims . . .   26
               i.   Class 8 - Interests in Columbia Common Stock  . . . .   27
     B.   Transactions On the Effective Date  . . . . . . . . . . . . . .   27
     C.   New Indenture and New Indenture Securities  . . . . . . . . . .   29
     D.   New Preferred Stock and DECS  . . . . . . . . . . . . . . . . .   30
     E.   Reorganized Columbia or Third Party as Disbursing Agent For
          Claims  . . . . . . . . . . . . . . . . . . . . . . . . . . . .   30
     F.   Delivery of Distributions; Unclaimed Distributions  . . . . . .   30
          1.   Delivery of Distributions on Unclassified Claims and
               Claims in Classes 1, 2, 4 and 6  . . . . . . . . . . . . .   30
          2.   Delivery of Distributions to Holders of Classes 3.1 and
               3.2 Claims . . . . . . . . . . . . . . . . . . . . . . . .   31
               a.   Record Date . . . . . . . . . . . . . . . . . . . . .   31
               b.   Surrender of Instruments  . . . . . . . . . . . . . .   31
<PAGE>   112
                                                                          Page
                                                                          ---- 
               c.   Cancellation  . . . . . . . . . . . . . . . . . . . .   33
               d.   Distributions of Cash, New Indenture Securities, New
                    Preferred Stock and DECS  . . . . . . . . . . . . . .   33
               e.   Cash in Lieu of Fractional Shares and Odd Lots;
                    Rounding of New Indenture Securities  . . . . . . . .   35
          3.   Unclaimed Distributions  . . . . . . . . . . . . . . . . .   36
          4.   Means of Cash Payments . . . . . . . . . . . . . . . . . .   38
          5.   Setoffs  . . . . . . . . . . . . . . . . . . . . . . . . .   39
          6.   Continuation of Certain Retirement, Workers' Compensation
               and Long-Term Disability Benefits  . . . . . . . . . . . .   40
     G.   Continued Corporate Existence and Vesting of Assets in
          Reorganized Columbia  . . . . . . . . . . . . . . . . . . . . .   40
     H.   Corporate Governance, Directors and Officers  . . . . . . . . .   41
          1.   Certificate of Incorporation . . . . . . . . . . . . . . .   41
          2.   Directors and Officers of Reorganized Columbia . . . . . .   41
          3.   Corporate Action . . . . . . . . . . . . . . . . . . . . .   42
          4.   LESOP  . . . . . . . . . . . . . . . . . . . . . . . . . .   42
          5.   Waivers, Releases and Abandonment of Claims  . . . . . . .   43
     I.   Bar Dates . . . . . . . . . . . . . . . . . . . . . . . . . . .   43
          1.   Bar Date for Objections to Non-Administrative Claims . . .   43
          2.   Bar Dates for Professional Claims  . . . . . . . . . . . .   43
     J.   Rejection of Executory Contracts and Unexpired Leases;
          Additional Bar Dates  . . . . . . . . . . . . . . . . . . . . .   44
          1.   General  . . . . . . . . . . . . . . . . . . . . . . . . .   44
          2.   Tax Allocation Agreement . . . . . . . . . . . . . . . . .   44
          3.   Bar Date for Rejection Damages . . . . . . . . . . . . . .   44
          4.   Executory Contracts and Unexpired Leases Entered Into and
               Other Obligations Incurred After the Petition Date . . . .   45
     K.   Conditions Precedent to Confirmation and Consummation of the
          Columbia Plan . . . . . . . . . . . . . . . . . . . . . . . . .   45
          1.   Conditions to Confirmation . . . . . . . . . . . . . . . .   45
          2.   Conditions to Effective Date . . . . . . . . . . . . . . .   47
          3.   Waiver of Conditions to Confirmation or Effective Date . .   48
          4.   Effect of Non-Occurrence of Conditions to Effective Date .   50
          5.   Working Capital Facility . . . . . . . . . . . . . . . . .   50
          6.   Term Loan Facility . . . . . . . . . . . . . . . . . . . .   50
     L.   Miscellaneous . . . . . . . . . . . . . . . . . . . . . . . . .   51
          1.   Dissolution of Committees  . . . . . . . . . . . . . . . .   51
          2.   Discharge, Termination and Injunction  . . . . . . . . . .   51
          3.   Jurisdiction of the Bankruptcy Court . . . . . . . . . . .   52
          4.   Limitation of Liability  . . . . . . . . . . . . . . . . .   52
          5.   Modification of the Columbia Plan  . . . . . . . . . . . .   52
<PAGE>   113
                                                                          Page
                                                                          ---- 
          6.   Revocation of the Columbia Plan  . . . . . . . . . . . . .   53
          7.   Severability of Columbia Plan Provisions . . . . . . . . .   53
          8.   Successors and Assigns . . . . . . . . . . . . . . . . . .   54

VII. RISK FACTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . .    1
     A.   Conditional Nature of the Plan  . . . . . . . . . . . . . . . .    1
     B.   Lack of Established Market for the New Indenture Securities,
          DECs and New Preferred Stock; Volatility  . . . . . . . . . . .    4
     C.   Projections . . . . . . . . . . . . . . . . . . . . . . . . . .    5
     D.   Business Factors and Competitive Conditions . . . . . . . . . .    6
     E.   Liabilities Assumed by Columbia . . . . . . . . . . . . . . . .    7
     F.   Uncertainties Associated with the TCO Plan  . . . . . . . . . .    8
     G.   Environmental Liabilities . . . . . . . . . . . . . . . . . . .    9
     H.   Cash-Out Election . . . . . . . . . . . . . . . . . . . . . . .   11
     I.   Holding Company Structure . . . . . . . . . . . . . . . . . . .   12


VIII.     FEDERAL INCOME TAX CONSEQUENCES OF THE PLAN . . . . . . . . . .    1
     A.   Tax consequences to Columbia  . . . . . . . . . . . . . . . . .    2
          1.   General  . . . . . . . . . . . . . . . . . . . . . . . . .    2
          2.   Discharge of Indebtedness  . . . . . . . . . . . . . . . .    2
          3.   Deductibility of Plan Payments . . . . . . . . . . . . . .    3
     B.   Tax Consequences To Holders of Claims and Interests . . . . . .    3
          1.   Trade Creditors and Others Receiving only Cash . . . . . .    3
          2.   Creditors Whose Claims Are Assumed . . . . . . . . . . . .    3
          3.   Holders of Class 3.2 Claims  . . . . . . . . . . . . . . .    4
               a.   General . . . . . . . . . . . . . . . . . . . . . . .    4
               b.   Tax Consequences of the Exchange  . . . . . . . . . .    6
          4.   Holders of Class 4 Claims. . . . . . . . . . . . . . . . .    9
          5.   Certain Other Tax Considerations for Holders of Claims . .    9
               a.  Receipt of Interest  . . . . . . . . . . . . . . . . .    9
               b.   Accrued Market Discount . . . . . . . . . . . . . . .   10
               c.   Original Issue Discount ("OID") . . . . . . . . . . .   12
               d.   Future Stock Gains  . . . . . . . . . . . . . . . . .   14
               e.   Future Sales of New Debt  . . . . . . . . . . . . . .   14
               f.   Defeasance of New Indenture Securities  . . . . . . .   16
               g.   Tax Treatment of DECS (and Preferred Stock, where
                    noted)  . . . . . . . . . . . . . . . . . . . . . . .   16
               h.   Disposition of Preferred Stock and DECS
               Pursuant to Cash-Out Election  . . . . . . . . . . . . . .   19
               i.   Backup Withholding  . . . . . . . . . . . . . . . . .   20
          6.   Holders of Class 7 Interests . . . . . . . . . . . . . . .   20
          7.   Importance of Obtaining Professional Tax Assistance  . . .   21
<PAGE>   114
                                                                          Page
                                                                          ---- 
IX.  VOTING PROCEDURES AND CONFIRMATION REQUIREMENTS  . . . . . . . . . .    1
     A.   Confirmation Hearing  . . . . . . . . . . . . . . . . . . . . .    1
     B.   Confirmation Requirements . . . . . . . . . . . . . . . . . . .    1
          1.   Acceptance . . . . . . . . . . . . . . . . . . . . . . . .    4
          2.   Best Interests Test  . . . . . . . . . . . . . . . . . . .    5
          3.   Feasibility  . . . . . . . . . . . . . . . . . . . . . . .    6
          4.   The Plan must Comply with the Applicable Provisions of the
               Bankruptcy Code  . . . . . . . . . . . . . . . . . . . . .    7
               a.   Classification of Claims and Interests  . . . . . . .    7
               b.   Mandatory and Optional Plan Provisions  . . . . . . .   11
               c.   Post-Petition Interest  . . . . . . . . . . . . . . .   13
               d.   Compromise of Intercompany Claims . . . . . . . . . .   14
          5.   Columbia must Comply with the Applicable Provisions of the
               Bankruptcy Code  . . . . . . . . . . . . . . . . . . . . .   16
          6.   Alternatives to the Plan . . . . . . . . . . . . . . . . .   18
               a.   Cramdown Requirements . . . . . . . . . . . . . . . .   18
                    (i)  The Plan must be Fair and Equitable  . . . . . .   18
                    (ii) The Plan must not Discriminate Unfairly  . . . .   19
               b.   Liquidation . . . . . . . . . . . . . . . . . . . . .   20
     C.   Voting Procedures and Requirements  . . . . . . . . . . . . . .   20
          1.   Voting Requirements - Generally  . . . . . . . . . . . . .   20

X.  REORGANIZED COLUMBIA  . . . . . . . . . . . . . . . . . . . . . . . .    1
     A.   Business of Columbia Gas  . . . . . . . . . . . . . . . . . . .    1
     B.   Financial Projections; Recapitalization . . . . . . . . . . . .    2
          1.   Introduction . . . . . . . . . . . . . . . . . . . . . . .    2
          2.   Principal Assumptions  . . . . . . . . . . . . . . . . . .    3
               a.   Columbia and TCO Plan Assumptions . . . . . . . . . .    5
               b.   Financing Assumptions . . . . . . . . . . . . . . . .    7
               c.   Business, Regulatory and General Economic Assumptions    8
               d.   Tax Assumptions . . . . . . . . . . . . . . . . . . .   10
          3.   Projections  . . . . . . . . . . . . . . . . . . . . . . .   10
     C.   Best Interests Test Analysis  . . . . . . . . . . . . . . . . .   14
     D.   Pricing of Securities . . . . . . . . . . . . . . . . . . . . .   18
     E.   Securities To Be Issued Pursuant To The Plan  . . . . . . . . .   20
          1.   Introduction . . . . . . . . . . . . . . . . . . . . . . .   20
          2.   Indenture Securities . . . . . . . . . . . . . . . . . . .   21
          3.   Equity DECS (Dividend Enhanced Convertible Stock)(TM)  . .   24
          4.   Common Stock . . . . . . . . . . . . . . . . . . . . . . .   29
          5.   New Preferred Stock  . . . . . . . . . . . . . . . . . . .   30
          6.   Applicability of Federal and Other Securities  . . . . . .   32
               a.   Issuance of Securities Under the Plan . . . . . . . .   32
               b.   Transfers of New Securities . . . . . . . . . . . . .   33
               c.   Certain Transactions by Stockbrokers  . . . . . . . .   35
          7.   HCA Provisions Applicable to Securities To Be Issued
               Pursuant to the Plan . . . . . . . . . . . . . . . . . . .   35
<PAGE>   115
                                                                          Page
                                                                          ---- 
          8.   Future Stock Issuances . . . . . . . . . . . . . . . . . .   36
     F.   Other Post-Reorganization Debt  . . . . . . . . . . . . . . . .   37
          1.   Term Credit Facility . . . . . . . . . . . . . . . . . . .   37
          2.   Revolving Credit Facility  . . . . . . . . . . . . . . . .   38
          3.   Other Credit Facilities  . . . . . . . . . . . . . . . . .   39
     G.   Management  . . . . . . . . . . . . . . . . . . . . . . . . . .   40
          1.   Board of Directors . . . . . . . . . . . . . . . . . . . .   40
          2.   Officers of Columbia . . . . . . . . . . . . . . . . . . .   44
               a.   Overview of Columbia's Senior Management  . . . . . .   44
               b.   Changes in Senior Management of Columbia  . . . . . .   48
     H.   Amendment to Certificate of Incorporation . . . . . . . . . . .   51

XI.  CONCLUSION . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    1
<PAGE>   116
I.   SUMMARY

     A.   INTRODUCTION

     On July 31, 1991, The Columbia Gas System, Inc. ("Columbia"),(1) and one

of its wholly-owned subsidiaries, Columbia Gas Transmission Corporation

("TCO"), each filed a voluntary petition for reorganization under Chapter 11

of title 11 of the United States Code, 11 U.S.C. Section Section 101, et seq.

(the "Bankruptcy Code").  On January 18, 1994, TCO filed, with Columbia as co-

sponsor, a plan of reorganization for TCO which was amended on April 17, 1995

(such plan as amended is hereinafter referred to as the "TCO Plan"), and

concurrently with such amendment, Columbia filed its plan of reorganization

(the "Columbia Plan"; and together with the TCO Plan, the "Plans").

     This Disclosure Statement is submitted by Columbia in connection with its

solicitation of acceptances of the Columbia Plan.  This Disclosure Statement

will be supplemented by a report of the Securities and Exchange Commission

(the "SEC") on the Columbia Plan to be issued by it in accordance with Section

11 of the Public Utility Holding Company Act of 1935, as amended, 15 U.S.C.

Section Section 79, et seq. (the "HCA").  That report should be read in

conjunction with this Disclosure Statement.  A separate Disclosure Statement

(the "TCO Disclosure Statement")


- ---------------------
(1)  Terms not otherwise defined in this Disclosure Statement shall have the
     meanings ascribed to them in the Columbia Plan.


                                      I-1
<PAGE>   117
has been submitted by TCO in connection with its solicitation of acceptances

from TCO creditors of the TCO Plan.

     The following Executive Summary is intended to highlight key aspects of

the Columbia Reorganization Case and the proposed Columbia Plan and is not

intended in any way to substitute for a complete review of that Plan and the

balance of this Disclosure Statement.  ALL HOLDERS OF CLAIMS AGAINST, AND

EQUITY INTERESTS IN, COLUMBIA ARE ENCOURAGED TO READ THE COLUMBIA PLAN AND

THIS DISCLOSURE STATEMENT IN THEIR ENTIRETY.

     Columbia's and TCO's Chapter 11 filings were precipitated by a

combination of events which adversely affected TCO's physical operations and

financial viability, and consequently the liquidity of Columbia, a holding

company, and its seventeen operating subsidiaries, including TCO (collectively

referred to as the "System").  The Chapter 11 cases have, in turn, been

closely tied to each other as TCO's Creditors have sought recoveries from

Columbia to supplement the values available in the TCO Estate.  Columbia,

after consultation with the Official Committee of Unsecured Creditors of

Columbia (the "Columbia Creditors' Committee") and the Official Committee of

Equity Security Holders of Columbia (the "Columbia Equityholders' Committee"),

believes that it is in the best interests of both estates, in that values will

be maximized and the reorganization process expedited, for Columbia to retain

ownership of TCO and to recapitalize its own debt and equity structure in

conjunction with a recapitalization of TCO and funding of payments to TCO's

Creditors.



                                      I-2
<PAGE>   118
     Thus, important elements of the Columbia Plan relate to the proposed

refinancing of TCO by Columbia and other concessions by Columbia embodied in

the "Columbia Omnibus Settlement" (defined infra) which will facilitate the

reorganization of TCO.  The Columbia Plan currently contemplates concurrent

implementation of the Columbia Plan and the TCO Plan.  

     The overall goals of the Plans are to (i) pay Columbia Creditors 100% of

their Allowed Claims (and, in most cases, post-petition interest thereon),

(ii) maximize the value of the recoveries to TCO's Creditors by settling

ongoing litigation, (iii) alter the debt and capital structure of Columbia and

TCO to permit them to emerge from their respective Chapter 11 cases with

modernized and viable capital structures and (iv) preserve and ultimately

enhance shareholder values. 

     In addition, the Plans preserve Columbia's and TCO's basic business

operations which have proved to be viable and financially sound

notwithstanding the filing of the Chapter 11 petitions.  The Columbia Plan is

intended to provide for payment in full of all liquidated Allowed Claims of

Creditors of Columbia.  Holders of Claims for borrowed money generally will

receive, in settlement and satisfaction of their Claims for principal and pre-

petition interest, together with post-petition interest thereon, a combination

of cash, to the extent available therefor (as determined by Columbia), new

debt securities of Columbia and new equity securities of Columbia, having an

aggregate face amount, when added to the cash, if any, to be distributed,

equal to the sum of their Claims, together with



                                      I-3
<PAGE>   119
post-petition interest.  As described in Section X below, Salomon Brothers Inc

("Salomon") has advised Columbia that the objective of the methodologies to be

used to price the securities to be issued pursuant to the Columbia Plan is for

the new debt securities, upon their issuance on the effective date of the

Columbia Plan, to trade at par and for the new equity securities, upon their

issuance on such date, to trade at their face amount.  Other Creditors will

receive cash in the amount of their Allowed Claims or, in some cases, will

have obligations assumed by Columbia after its emergence from Chapter 11. 

Finally, holders of Claims (the "Securities Action Claims") asserted in or

arising from the Securities Action (defined and described below) filing proper

supplemental proofs of claim and otherwise qualifying under the terms of the

settlement offer described in Section VI.A.2.e. will be paid the proposed

settlement amounts offered by the Columbia Plan, unless such holders, whether

individually or in the aggregate, reject that offer of settlement, in which

case their Claims will be assumed by Reorganized Columbia and they may

continue to litigate their Claims against Columbia following the Effective

Date.

     Holders of the common stock (the "Common Stock") of Columbia

(collectively the "Stockholders"), will retain their equity interests in

Columbia and are asked to vote to accept the Columbia Plan and, in particular,

are asked to approve amendments to the Certificate of Incorporation of

Columbia which, among other things, will prohibit the issuance of non-voting

equity securities as required by section 1123(a)(6) of




                                      I-4
<PAGE>   120
the Bankruptcy Code and increase the amount of Columbia's authorized preferred

stock.

     The TCO Plan does not provide for payment in full of all claims of TCO's

creditors, but does provide for, among other things, Columbia's guaranty of

payments by TCO to third-party creditors as provided in the TCO Plan, in

consideration for (i) the retention by Columbia of TCO's equity, (ii)

settlement of the litigation over the Intercompany Claims (defined in Section

IV.B below) and (iii) the resolution of numerous other disputes affecting both

Columbia's and TCO's reorganization efforts.  The TCO Plan permits prompt

payment of Allowed Claims against TCO, embodies agreements over disputed

claims and other issues which TCO believes are acceptable to most, if not all,

of its Creditors and ensures the availability of substantial resources to pay

Claims against TCO that are not settled as of the Effective Date.  

     In the event the Columbia Plan is not confirmed, it is likely that

litigation over the Intercompany Claims will continue, unnecessarily consuming

much time and resources.  Also, in that event, no assurances can be given as

to when Columbia will emerge from bankruptcy or how Columbia Creditors and

Stockholders will be treated under any other plan of reorganization that might

be proposed.

     The requirements for confirmation, including the vote of Stockholders and

certain classes of Creditors to accept the Columbia Plan and certain statutory

findings that must be made by the Bankruptcy Court, are set forth in Section

IX under the



                                      I-5
<PAGE>   121

caption "Voting Procedures and Confirmation Requirements".  Confirmation of

the Columbia Plan and the occurrence of the Effective Date are subject to a

number of significant conditions.  Although Columbia believes that

satisfaction of those conditions should be feasible, there can be no assurance

that they will be satisfied.  See Section VII, "Risk Factors".

     B.   EXECUTIVE SUMMARY

          1.   THE DEBTORS AND THEIR BUSINESSES

     Columbia is a Delaware holding company with seventeen operating

subsidiaries engaged in various aspects of the natural gas and oil industry. 

The operating companies are engaged in the exploration, production, purchase,

marketing, storage, transmission and distribution of natural gas and other

energy operations such as electric power generation and propane distribution. 

A more complete description of Columbia's business is set forth in

Section III.A below, and its financial statements are included in the Annual

Report on Form 10K for 1994 attached hereto as Exhibit 2 (the "Columbia Annual

Report"), and in the Quarterly Report on Form 10Q for the first quarter ending

March 31, 1995 attached hereto as Exhibit 3.  Columbia is a registered public

utility holding company under the HCA and, pursuant to the HCA, the Columbia

Plan and Columbia's external and intercompany financing activities, including

certain transactions contemplated by the TCO Plan, and certain of its

intercompany contractual relationships and various other matters, are

regulated by the SEC.





                                      I-6
<PAGE>   122

     TCO is one of two interstate pipeline companies owned by Columbia.  TCO

owns and operates an approximately 19,000 mile natural gas transmission

pipeline network and related extensive underground gas storage fields that

serve parts of thirteen states in the Northeastern, Mid-Atlantic, Midwestern

and Southeastern regions and the District of Columbia.  TCO's customers are

various affiliated and unaffiliated gas distribution companies, gas marketers,

producers and end users of gas ("Customers").  Its rates, charges, services

and facilities are subject to regulation by the Federal Energy Regulatory

Commission ("FERC"), primarily pursuant to the Natural Gas Act, 15 U.S.C.

Section Section 17, et seq. ("NGA").  Prior to November 1, 1993, TCO operated

as a "merchant" of gas, purchasing gas from producers and other pipeline

suppliers and reselling it to distribution companies and large industrial

users.  Since November 1, 1993, following a fundamental change in the gas

industry brought about by FERC under its Order No. 636, TCO no longer conducts

any significant gas merchant activities and is presently almost entirely

engaged in the business of transporting and storing gas for its Customers.

     Columbia, as a holding company, has provided debt and equity financing

for all its operating subsidiaries, including TCO, and has been the principal

vehicle for raising funds in the capital markets for the System.  Columbia has

generally reinvested in its operating subsidiaries the proceeds of its equity

and debt issues, as well as cash flows from its subsidiaries.






                                      I-7
<PAGE>   123

     Prior to June 1985, Columbia made loans to TCO on an unsecured basis and,

at the time of the filing of the Chapter 11 petitions, Columbia held unsecured

obligations of TCO aggregating $351 million, including accrued interest. 

Loans made by Columbia to TCO after June 1985 were secured by first mortgage

liens on substantially all TCO's assets.  At the time of the filing of the

Chapter 11 petitions, Columbia held secured obligations of TCO aggregating

approximately $1.340 billion in principal.  Pre- and post-petition interest

accrued through December 31, 1995 on such secured obligations are projected to

be approximately $644 million (at the interest rates set forth or provided for

in the loan documentation).  Columbia has not made additional loans to TCO

since July 31, 1991, the filing date of Columbia's and TCO's Chapter 11

petitions, and TCO has made no payments to Columbia on its loans since such

date.

          2.   THE PROBLEMS THAT LED TO THE CHAPTER 11 PETITIONS

     Columbia's and TCO's Chapter 11 filings were precipitated by a

combination of events which adversely affected TCO's physical operations and

financial viability and which, in turn, caused a liquidity shortfall for

Columbia.  Most notable were (i) federal legislative and regulatory actions,

instituted years after TCO's gas purchase contracts were entered into, that

significantly impacted TCO's ability to sell the gas it had contracted to buy

and to recover its costs from its Customers and (ii) TCO's continuing

contractual obligations to purchase gas at prices above those at which it was

able to market gas.  These problems were exacerbated by record-setting warm

weather,





                                      I-8
<PAGE>   124

which caused spot market prices for gas to plunge, created excess

transportation capacity and precluded taking additional gas into storage, thus

making an unexpected and persistent oversupply of bargain-priced gas available

to TCO's Customers.  As a result, TCO's ability to market its gas was severely

undercut, substantially reducing both sales volumes and revenues.

     After completing studies in early June 1991 that revealed the magnitude

of TCO's gas supply management problems, Columbia announced on June 19, 1991

that the present value of losses associated with TCO's above-market priced gas

purchase contracts could exceed $1 billion, that a substantial portion of that

amount would be charged to income in the second quarter and that the dividend

on Columbia's Common Stock was being suspended.

     Columbia immediately initiated negotiations with banks in an effort to

reestablish lines of credit that were interrupted by the June 19 announcement,

and TCO promptly proposed a comprehensive settlement plan (the "PSP") with gas

producers ("Producers") that offered to buy out Producers' contracts and

settle other contractual disputes for a pro rata share of $600 million of TCO

debt obligations.  Progress was made in both areas of negotiation.  However,

agreements could not be concluded before TCO's and Columbia's available cash

resources were substantially exhausted, forcing both to seek Chapter 11

protection at the end of July 1991.






                                      I-9
<PAGE>   125
          3.   THE DEBTORS' BUSINESS OPERATIONS, FINANCIAL PERFORMANCE AND
               PROSPECTS

               a.   COLUMBIA

     Subsequent to the filing of its Chapter 11 petition, most of Columbia's

operating units have performed soundly.  See the Columbia Annual Report

attached as Exhibit 2 to this Disclosure Statement.  These positive operating

results demonstrate the financial health and viability of Columbia's basic

business units.  While Columbia has maintained its business operations and

instituted new programs and capital expenditures, certain aspects of its

operations have been restricted by the Chapter 11 proceedings.  As a debtor-

in-possession under the jurisdiction of the United States Bankruptcy Court for

the District of Delaware (the "Bankruptcy Court"), Columbia cannot engage in

transactions outside the ordinary course of business without obtaining

Bankruptcy Court approval.  Although Columbia arranged a debtor-in-possession

lending facility (the "DIP Facility"), it has been otherwise unable to access

the capital markets.  It also has incurred substantial bankruptcy-related

expenses, including professional fees.  Accordingly, Columbia believes that it

will be in a position to improve its financial results upon emergence from the

Chapter 11 proceedings.

     In addition, Columbia believes that its reorganization, as proposed in

the Columbia Plan, will enhance Columbia's financial position following

emergence.  The Columbia Plan includes the issuance to existing Columbia

Creditors of up to $3.0 billion, subject to adjustment as described herein, of

new debt




                                     I-10
<PAGE>   126
securities with maturities ranging from 5 to 30 years (collectively, the "New

Indenture Securities") and $200 million of Equity DECS (Dividend Enhanced

Convertible Stock)TM (the "DECS") and $200 million of Preferred Stock (the "New

Preferred Stock"); moreover, to the extent that holders of Claims for borrowed

money elect the Cash-Out Election for the DECS and New Preferred Stock

described herein, Columbia will issue other securities ("Other Securities"),

in up to a comparable amount in substitution for such equity securities.  The

recapitalization will also include the distribution of cash in an amount to be

determined and the incurrence of up to $1.15 billion of unsecured bank

financing consisting of a working capital facility of up to $700 million and a

$450 million term facility.  A portion of the bank facilities is expected to

be used by Columbia to fund payments to TCO in connection with its

reorganization and a portion may be used by Columbia to fund cash payments to

Columbia Creditors.  The bank facilities will also be available to fund the

future needs of other Columbia subsidiaries.  A more detailed description of

Columbia's projected financial performance, proposed capitalization and

prospects is set forth in Section X.B, "Financial Projections;

Recapitalization".

               b.   TCO

     Subsequent to the filing of its Chapter 11 petition, TCO rejected, as

permitted by the Bankruptcy Code, over 4,800 gas purchase contracts.  The

Producer counterparties to those contracts filed Claims for rejection damages

and other pre-



                                     I-11
<PAGE>   127
petition contractual amounts in excess of $13 billion. Rejection of the above-

market-price contracts enabled TCO to purchase market-priced gas which

bolstered its sales to competitive levels in the interim between its

Chapter 11 filing and its withdrawal from the merchant business in the fall of

1993 (in accordance with FERC Order No. 636).  Since that time, TCO's

transportation and storage service businesses have prospered.  Accordingly,

TCO has recorded substantial operating profits and projects an accumulated

cash balance of approximately $1.4 billion as of December 31, 1995 in excess

of operating cash needs, reserves and Customer refunds.  TCO expects to

continue to thrive by providing an array of competitively-priced, FERC-

approved transportation and storage services to its Customers.

     Under Order No. 636, pipelines such as TCO have the right to recover from

their customers various costs resulting from the mandated transition from

merchants to transporters.  However, FERC has determined that, with minor

exceptions, TCO is not eligible to recover costs arising from its rejection of

Producers' gas supply contracts.  The ultimate level of TCO's other

recoverable transition costs has been the subject of controversies with its

Customers, controversies which largely will be resolved upon consummation of

the TCO Plan.

     The largest Claims against the TCO estate for borrowed money are held by

Columbia and are secured by substantially all TCO's assets.  This indebtedness

bears interest at rates substantially higher than those being earned by TCO on

its




                                     I-12
<PAGE>   128
excess cash because of legal limitations on TCO's temporary investments

imposed by the Bankruptcy Code.  As a result, the growth in TCO's secured

interest obligations (the status of which had been challenged by the

Intercompany Claims) has exceeded its interest earnings on its cash available

for debt service by an amount exceeding $450 million when projected to

December 31, 1995.

          4.   OBSTACLES TO REORGANIZATION

     In contrast to the situation of many other Chapter 11 cases, the

reorganization of Columbia and TCO has not been hampered by unprofitable or

marginal business operations.  Rather, in Columbia's case, the achievement of

reorganization under Chapter 11 has been delayed pending achievement of a

reorganization of TCO and by the protracted litigation of the Intercompany

Claims and the time-consuming resolution of other Claims and related issues. 

The reorganization cases are linked principally because Columbia requires

resumption of payments due to it on its claims against TCO in order to meet

its own debt service requirements.  Validation of those claims has been

delayed pending resolution of the Intercompany Claims litigation.

     In TCO's case, achievement of reorganization has been delayed by (1) the

dispute and eventual settlement of the claims of the Internal Revenue Service

(the "IRS") against TCO and Columbia, (2) extensive litigation over the amount

and priority of claims for refunds by Customers and of TCO's right to recover

Order No. 636 transition costs from Customers (the "FERC





                                     I-13
<PAGE>   129
Receivables"), which litigation has proceeded both before FERC and the

Bankruptcy Court, (3) the Intercompany Claims litigation and (4) the enormity

and complexity of the disputed Claims filed against TCO by Producer Creditors.

     There have been prolonged, extensive negotiations with the IRS over its

claims against Columbia and TCO exceeding $550 million, principally for pre-

petition income taxes, plus penalties and interest.  These Claims were finally

resolved by a settlement agreement, reducing the Claims to approximately $112

million (plus post-petition interest), that was approved by the Joint

Committee on Taxation of the United States Congress on June 30, 1994 and by

Order of the Bankruptcy Court dated October 12, 1994.

     The litigation surrounding the Customer Claims and FERC Receivables has

been prolonged and contentious.  A consensual settlement with a substantial

majority of TCO's Customers, negotiated in early 1995, is being submitted to

FERC for approval and is embodied in TCO's proposed treatment of Customers

under the TCO Plan.  While some dissenting Customers may vote against this

treatment under the TCO Plan and elect to continue to litigate their Claims

following TCO's emergence from Chapter 11, the proposed treatment of Customers

is expected to be accepted by a substantial majority of the Customers, and,

therefore, is expected to resolve another of the principal obstacles to

reorganization.

     After 2-1/2 years of pre-trial procedures, the Intercompany Claims were

tried before District Judge Farnan in September and





                                     I-14
<PAGE>   130
October 1994.  The Columbia Plan embodies a settlement of the Intercompany

Claims litigation with the TCO Creditors' and Customers' Committees, and it is

a condition to consummation of both the Columbia and TCO Plans that such

litigation shall have been settled and dismissed with prejudice.

     Columbia and TCO have also devoted substantial efforts to resolve

disputed Producer Claims.  The Producer counterparties to the rejected gas

purchase contracts filed Claims for rejection damages in excess of

$13 billion, an amount which, TCO believes, based on its own analysis and its

review of the Bankruptcy Court-appointed Claims Mediator's Initial and

Supplemental Reports on Producer Claims, is significantly greater than the

actual allowable level of those Claims.  Producer Creditors also filed other

Claims based on pre-filing contractual disputes relating to pricing and take-

or-pay obligations in amounts well in excess of TCO's estimates of its

liabilities with respect to such disputes.

     An initial recalculation of contract rejection and certain other Producer

Claims has become possible only since the issuance in October 1994 and

February 1995 of the Claims Mediator's Initial and Supplemental Reports on the

generic methodologies for calculating such damages and claims.  Completed

recalculation forms are due from Producers by May 19, 1995 and extensive

audits and Contract-specific objections would be expected to follow (although

this may be largely obviated as a result of the agreement in principle with

certain Producers referred to below).





                                     I-15
<PAGE>   131
     From the early months of these Chapter 11 cases, Columbia and TCO have

endeavored to identify and settle their differences with Producer Creditors

through extensive meetings and discussions.  In order to end protracted

litigation with Producer Creditors, TCO offered settlement values for all

Producer Claims to resolve their Claims.  As a result, in April 1995, an

agreement in principle regarding a consensual settlement, which is embodied in

the TCO Plan, was reached with holders of what TCO believes to be in excess of

80% of the aggregate amount of Producer Claims (the "Initial Accepting

Producers").  Under such agreement in principle, the Initial Accepting

Producers will receive between approximately 68.875% and 72.5% of their

Allowed Claims, depending upon the aggregate amount of Producer Claims that

are ultimately allowed.  The agreements in principle with the Initial

Accepting Producers have resulted in the development of a set of schedules

proposing settlement values to all Producer Claims, acceptance of which will

resolve disputes as to the allowable levels of those Claims, which, together

with a related agreement on payout and risk sharing, substantially resolves

the largest category of disputed Claims in the TCO case.  Although some

Producers may not accept their proposed settlement values set forth in the TCO

Plan and elect instead to continue to dispute their Claims following the

Effective Date of TCO's Plan, such failure will not preclude TCO's

reorganization.





                                     I-16
<PAGE>   132
          5.   THE CORNERSTONE OF THE COLUMBIA AND TCO PLANS: THE COLUMBIA
               OMNIBUS SETTLEMENT


     Columbia and TCO believe that litigated resolutions of the Intercompany

Claims and the Producer Claims against TCO would take several more years and

that such litigation is not in the best interests of the System.  Columbia is

therefore proposing an omnibus settlement (the "Columbia Omnibus Settlement")

in order to facilitate and expedite the emergence of both Columbia and TCO

from Chapter 11, and allow payments to be made to thousands of creditors whose

claims are liquidated and Allowed.  The Columbia Omnibus Settlement provides,

among other things, that, in consideration of, among other things, retention

of the equity of TCO, a settlement of the claims raised or which could have

been raised in the Intercompany Claims litigation and other disputes, and

settlement of litigation over the liquidation of the Producer Claims of the

Initial Accepting Producers, of Customer Claims and of certain and other

disputed Claims:

          (i) Columbia will assist TCO in monetizing the TCO Plan which

     provides for value (the "TCO Distributable Value") to be distributed to

     TCO Creditors of approximately $3.9 billion (in the event of 100%

     acceptance of Producer settlement values), which distribution, in the

     case of creditors other than Columbia will be substantially in cash;

          (ii) Columbia will provide a guaranty of the settlement reached by

     TCO with its Customers (the "Customer Settlement Proposal");





                                     I-17
<PAGE>   133
          (iii) Columbia will not receive any cash distribution with respect

     to its Secured Claim against TCO (which it would otherwise be entitled to

     before payments to other Creditors), but instead will receive new secured

     debt securities of reorganized TCO (secured by substantially all TCO's

     assets) for a portion of its Secured Claim and will contribute the

     balance of such Secured Claim to reorganized TCO's equity;

          (iv) Columbia will consent to the assumption by Reorganized TCO of

     certain pre-petition environmental claims of governmental agencies and

     certain other claims; and

          (v) Columbia will provide a guaranty of payment of distributions to

     TCO's Creditors as provided under the TCO Plan (excluding assumed

     obligations). 

These considerations cannot be collectively expressed as a precise dollar

amount, but reflect significant additional consideration from Columbia to the

TCO Estate to terminate the Intercompany Claims litigation and other disputes

in the TCO proceedings which have delayed the reorganization of both Columbia

and TCO.  

     On the other hand, the Omnibus Settlement will provide substantial

benefits to Columbia in addition to the retention of ownership of TCO, by

resolving numerous contentious disputes with Customers and Producers affecting

the economic value of the TCO Estate on terms which Columbia believes to be

fair and reasonable, and permitting both Columbia and TCO to emerge from




                                     I-18
<PAGE>   134
bankruptcy, as promptly as possible, to pay their Creditors, and to pursue

ongoing business objectives free of the burdens and constraints of Chapter 11. 

In addition, as more fully described in Section VI.K, it is a condition to the

effectiveness of the Plans that Columbia obtain a letter ruling from the

Internal Revenue Service to the effect that payments made with respect to

certain Producer Claims will be deductible when paid by TCO for federal income

tax purposes.  Assuming their deductibility, payment of such amounts would

provide a tax benefit to the System.  

          6.   PROPOSED RESOLUTION OR TREATMENT OF OTHER MAJOR CONTROVERSIES
               IN COLUMBIA'S CHAPTER 11 PROCEEDINGS

               a.   INTERCOMPANY CLAIMS LITIGATION

     Columbia agrees to provide funding for the TCO Distributable Value on the

terms set forth in the TCO Plan, in consideration for, among other things,

settlement of the Intercompany Claims and retention of TCO.  

               b.   POST-PETITION INTEREST AND RELATED CLAIMS BY
                    UNSECURED COLUMBIA CREDITORS

     Columbia has not made any significant payments with respect to its

outstanding pre-petition obligations since the filing of its Chapter 11

petition, notwithstanding the fact that it believes it is solvent.  The

Columbia Creditors' Committee asserted that unsecured Creditors are entitled

to post-petition interest on their obligations, as well as interest on missed

interest payments compounded at various times and at rates which are in some

cases significantly in excess of the non-default





                                     I-19
<PAGE>   135
interest rate provided for in the applicable contracts.  In addition, the

Columbia Creditors' Committee claimed that some unsecured Creditors are

entitled to the payment of a call penalty or pre-payment premium in connection

with the discharge of their pre-petition indebtedness.  The Columbia

Equityholders' Committee, on the other hand, questioned the extent of the

Creditors' entitlement to post-petition interest, and their entitlement to

interest on overdue interest payments and the rates and compounding used in

calculating that post-petition interest and interest on missed interest

payments.  In addition, the Columbia Equityholders' Committee argued that the

Creditors are not entitled to payment of call penalties or prepayment premiums

on their debt Claims.

     After discussions with both Committees, Columbia proposed a resolution of

the allowance and calculation of post-petition interest on unsecured Claims. 

The specific method of calculating interest for the various types of

indebtedness for borrowed money are set forth in Section VI.A.2.d, "Classes of

Claims and Interests - Class 3.2 - Borrowed Money Claims".  However, in

general, the proposed calculations call for (i) payment of simple interest at

the non-default contract rate (or, in the case of commercial paper, at the

imputed contract rate) or, if there is no contract rate, at a specified

interest rate with respect to interest accruing on principal balances prior to

the earlier of their scheduled maturity or the Effective Date and (ii) payment

of interest on each deferred interest payment and on principal following its

scheduled





                                     I-20
<PAGE>   136
maturity, calculated as simple interest at either the contractual default rate

or a specified rate (which may be less than the contractual default rate) from

the date on which such payment was due to the Effective Date.  The proposed

payments do not include any pre-payment or similar premiums.  

               c.   SECURITYHOLDER LAWSUITS

     After the announcement on June 19, 1991 by Columbia's board of directors

regarding its proposed charge to second quarter earnings and suspension of its

dividend, seventeen complaints purporting to be class actions were filed in

the United States District Court for the District of Delaware against

Columbia, various of its current and former officers and directors, certain of

its underwriters and its accountants.  These actions, which have been

consolidated, allege that from January 17, 1990 through July 31, 1991, the

defendants disseminated materially false and misleading statements regarding

Columbia's financial condition and failed to disclose material facts which

rendered other statements misleading, thereby artificially inflating the

market price of Columbia's Common Stock and publicly traded debt securities

(the "Securities Action").  The complaints in the Securities Action allege

violations of the Securities Act and the Securities Exchange Act of 1934,

negligent misrepresentations and common law fraud and deceit.  Upon the filing

of Columbia's bankruptcy case, the Securities Action was automatically stayed

as to Columbia pursuant to Section 362 of the Bankruptcy Code; and on November

30, 1994, any further





                                     I-21
<PAGE>   137
proceedings in the Securities Action were stayed until the entry of a final

judgment on the Intercompany Claims.

     Under the Columbia Plan, holders of Securities Action Claims that timely

file satisfactory supplemental proofs of claim and accept the settlement offer

proposed in the Columbia Plan will be paid by Columbia and various non-debtors

the settlement amounts provided for therein and described in Section VI.A.2

under the caption "Classification and Treatment of Claims and Interests --

Class 4 - Securities Action Claims".  Holders of Securities Action Claims that

timely file satisfactory supplemental proofs of claim but reject Columbia's

settlement offer may continue the Securities Action post-emergence, and that

litigation will be assumed by Reorganized Columbia.

          d.   ASSUMPTION OF CERTAIN CLAIMS 

     Claims, if any, arising from Columbia's obligations to indemnify its

officers, directors and agents and the officers, directors, employees and

agents of its subsidiaries, including TCO, Columbia's guarantee to the PBGC of

its subsidiaries' obligations to fund contributions to its subsidiaries'

pension plan and Columbia's guarantee to Shawmut Bank of Boston, N.A.

("Shawmut") for certain obligations of Columbia Gas of Ohio, Inc. ("Columbia

Ohio") under the lease for Columbia Ohio's headquarters in Columbus, Ohio, as

well as timely filed indemnification Claims of non-debtor defendants in the

Securities Litigation, will be unaffected by the Columbia Plan.  Indemnity

Claims under the Columbia Canada Sale Agreement and Columbia's indemnity

agreement with the Reliance Group (each of





                                     I-22
<PAGE>   138
which is described in Section VI.A.1.a.(v) under the caption "Miscellaneous

Administrative Claims") will be assumed by Reorganized Columbia and paid in

the ordinary course of business.

          7.   AMENDMENT TO THE CERTIFICATE OF INCORPORATION 

     The Columbia Plan includes an amendment and restatement of Columbia's

Certificate of Incorporation.  The proposed amendments represent a

streamlining and modernization of Columbia's charter as well as certain

additional changes.

     The principal amendments to the Certificate of Incorporation are:  (i)

the inclusion of a prohibition on the issuance of non-voting equity securities

as required by section 1123(a)(6) of the Bankruptcy Code; (ii) the addition of

a provision allowing a super-majority of the board of directors (in addition

to Stockholders) to remove a director for cause; and (iii) an increase in the

number of Columbia's authorized shares of preferred stock (the "Preferred

Stock") to 20 million shares.

     Additional amendments to the Certificate of Incorporation, proposed for

approval by Stockholders at the Annual Meeting scheduled for April 28, 1995

and subject to approval of the Bankruptcy Court and the SEC, will be

effectuated pursuant to the Columbia Plan if they are not implemented prior to

the Effective Date.  Those amendments, prepared to permit implementation of a

shareholder rights plan adopted by Columbia's board of directors and more

fully described in Section V.F.16 below, (i) delete restrictions on dividends

and




                                     I-23
<PAGE>   139
amounts of secured debt applicable while any Preferred Stock is outstanding,

(ii) provide that the board of directors may determine the specific rights,

powers and preferences of each series of Preferred Stock and the limitations

thereon at the time of its issuance, (iii) reduce the par value of the

Preferred Stock from fifty dollars ($50) to ten dollars ($10) per share, and

(iv) provide for continuation of a staggered board of directors elected by

holders of Common Stock even if directors are elected by the holders of

Preferred Stock.

     A more complete description of proposed amendments to Columbia's

Certificate of Incorporation is set forth in Section X.H under the caption

"Amendment to the Certificate of Incorporation".  

     Stockholders who vote to approve the Columbia Plan will, by such vote and

without further action, approve the amendments to the Certificate of

Incorporation described above.

          C.   DISTRIBUTIONS UNDER THE PLAN

     The Columbia Plan provides for:

          (1)  Payment on the Effective Date in cash in full of all Allowed

     Unclassified Claims, consisting principally of administrative claims and

     tax claims entitled to priority under section 507(a)(8) of the Bankruptcy

     Code, or, in the case of the IRS's Claims, over a period of up to six

     years.  Payment of post-petition interest on the Allowed Unclassified

     Claims will also be made where appropriate, and holders of Unclassified

     Claims will not be entitled to vote on the Columbia Plan.




                                     I-24
<PAGE>   140
          (2)  Payment on the Effective Date in cash in full of Claims under

     the DIP Facility.  Holders of Claims under the DIP Facility will not be

     entitled to vote on the Columbia Plan.

          (3)  Cash payment on the Effective Date in full of all Allowed Non-

     Borrowed Money Claims, consisting of all Claims not included in any other

     Class under the Columbia Plan, such as pre-petition claims for uncashed

     checks, intercompany payables and other trade payables, which are

     estimated to total approximately $1.0 million (excluding post-petition

     interest).  Holders of Allowed Claims in this Class shall be paid post-

     petition interest calculated (i) with respect to such Claims evidenced by

     a written agreement, at the non-default contractual interest rate set

     forth therein or (ii) if no such rate is set forth therein or if such

     Claim is not evidenced by a written agreement, at 6% per annum (the "Non-

     Contractual Interest Rate").  Claims for Non-Borrowed Money are not

     impaired by the Columbia Plan and will not be entitled to vote on the

     Columbia Plan.

          (4)  Claims for Borrowed Money, consisting of Claims arising under

     Columbia's 1961 Indenture, Claims under pre-petition bank lending

     facilities, Claims under the LESOP Guarantee, Claims under an interest

     rate swap agreement and Claims under certain other pre-petition borrowing

     arrangements, including commercial paper and certain bid notes and

     auction notes, exceeding $15,000 as of the





                                     I-25
<PAGE>   141
     Petition Date are treated as one Class of Claims and Claims for Borrowed

     Money not exceeding $15,000 as of such date are treated as one Class. 

     Holders of all such Allowed Claims shall be entitled to post-petition

     interest calculated as described under the heading "Classes of Claims and

     Interests" in Section VI below.  The Columbia Plan provides for payment

     of each such Allowed Claim and related post-petition interest in full

     with each holder of a Claim exceeding $15,000 as of the Petition Date

     receiving its proportionate share (generally based on the proportion of

     such Allowed Claim to all Allowed Claims in such Class) of cash, if any,

     each series of New Indenture Securities to be issued by Reorganized

     Columbia and the DECS and New Preferred Stock to be issued by Reorganized

     Columbia unless the underwriting arrangements described below are elected

     by the Creditor and successfully consummated (subject to adjustment to

     avoid the issuance of fractional shares of DECS and New Preferred Stock,

     odd lots of DECS and New Preferred Stock and non-round lots of New

     Indenture Securities of any Series).  Each holder of such a Claim not

     exceeding $15,000 as of the Petition Date will receive cash.  

          Holders of Claims for Borrowed Money who prefer not to continue to

hold the DECS and New Preferred Stock to be distributed to them under the

Columbia Plan will be assisted by Columbia in disposing of such securities. 

They will have an election (the "Cash-Out Election") to have Columbia

repurchase




                                     I-26
<PAGE>   142
the DECS and New Preferred Stock they will receive on the Effective Date

pursuant to the Columbia Plan at a price equal to the face amount of such

securities (less underwriting commissions and discounts) plus accrued and

unpaid dividends, subject to the satisfaction of certain conditions.  Holders

of such Claims will only be entitled to dispose of these securities as

described above if (i) they make the election when voting on the Columbia

Plan, (ii) those so electing will receive New Preferred Stock and DECS having

an aggregate face amount of at least $200 million and (iii) Reorganized

Columbia is able to complete, within one hundred and eighty (180) days of the

Effective Date, on terms satisfactory to it, a public offering (the "Take-Out

Offering") of Other Securities which will provide Columbia with sufficient net

cash proceeds to repurchase from the Holders who elect the Cash-Out Election

the New Preferred Stock and DECS received by them under the Columbia Plan for

the repurchase price described above or Columbia otherwise elects to

repurchase those securities.  Columbia will undertake in good faith to effect

the Take-Out Offering.

          Holders of Claims for Borrowed Money in excess of $15,000 will be

     entitled to vote on the Columbia Plan.

          (5)  Holders of Securities Action Claims that timely file

     satisfactory supplemental proofs of claim and vote to accept the

     settlement offer embodied in the Columbia Plan will be paid by Columbia

     and various non-debtors the settlement amounts provided for therein and

     described in Section VI.A.2 under the caption "Classification and






                                     I-27
<PAGE>   143
     Treatment of Claims and Interests -- Class 4 - Securities Action Claims". 

     Holders of Securities Action Claims that timely file satisfactory

     supplemental proofs of claim but reject Columbia's settlement offer may

     continue the Securities Litigation post-emergence, and that litigation

     will be assumed by Reorganized Columbia.  Holders of Securities Action

     Claims are deemed impaired and will vote on whether to accept or reject

     the Columbia Plan and the settlement offer embodied therein.

          (6)  The Columbia Omnibus Settlement and the Columbia Plan include

     consideration from Columbia to settle the Intercompany Claims.  Class 5,

     consisting of the Intercompany Claims, is unimpaired.

          (7)  The Stockholders will continue to own their interests in

     Reorganized Columbia, but are deemed to be impaired by the Columbia Plan

     and will be entitled to vote on such Plan.

          (8)  Claims, if any, arising from Columbia's obligations to

     indemnify its officers, directors, agents and employees and those of its

     subsidiaries, Columbia's guarantee to the PBGC of its subsidiaries'

     obligations to fund contributions to their pension plan and Columbia's

     guarantee to Shawmut for certain of Columbia Ohio's obligations under the

     lease of Columbia Ohio's headquarters in Columbus, Ohio, as well as

     timely filed indemnification Claims of non-debtor defendants in the

     Securities Litigation, will be unaffected by the Columbia Plan. 





                                     I-28
<PAGE>   144
     Indemnity Claims under the Columbia Canada Sale Agreement and Columbia's

     indemnity agreement with the Reliance Group will be assumed by

     Reorganized Columbia and paid in the ordinary course of business.

     D.   CONDITIONS

     The Confirmation and effectiveness of the Columbia Plan are subject to

certain conditions.  Those conditions include, among other things, that

(i) the TCO Plan shall have been confirmed and the order with respect to such

confirmation shall not have been vacated, reversed or stayed; and such Plan

shall have become effective; (ii) the SEC shall have approved, under the HCA,

the Columbia Plan and the transactions under the TCO Plan requiring its

approval, and the related order shall not have been vacated, reversed or

stayed; (iii) Moody's Investors Service, Inc. and Standard & Poor's Ratings

Group shall have confirmed that the New Indenture Securities, upon their

issuance, will be rated investment grade; (iv) TCO and Columbia will have

received a ruling from the Internal Revenue Service, in form and substance

satisfactory to Columbia and TCO, to the effect that the payments made by TCO

under the TCO Plan that are attributable to the breach, termination or

rejection of gas purchase contracts are deductible when paid by TCO for

federal income tax purposes; provided that, if such ruling has not been

received by December 15, 1995, then TCO and Columbia shall, by December 31,

1995, (a) either waive the receipt of such ruling as a condition for

Confirmation or the Effective Date, as appropriate or (b) all settlements of

Producers' Claims shall be




                                     I-29
<PAGE>   145
null and void; (v) holders of Securities Action Claims representing at least

75% of the Maximum Proof of Claim Amount (defined in Section VI.A.2.d) shall

have accepted the settlement offer proposed in the Columbia Plan; (vi) a

stipulation of dismissal with prejudice of the Intercompany Claims litigation,

conditioned only upon the completion of payment by Reorganized TCO of all

distributions payable on the effective date of the TCO Plan, shall have been

filed with the United States District Court for the District of Delaware; and

(vii) the Effective Date shall have occurred on or before June 28, 1996.  For

a complete description of all of the conditions to the Columbia Plan, see

Section VI.K, "Conditions Precedent to Confirmation and Consummation of the

Columbia Plan".

     E.   CONCLUSION

     The Columbia Plan provides for termination of bankruptcy proceedings

pending for nearly four years and payment in full of all pre-petition

liquidated Allowed Claims of Creditors of Columbia, together with post-

petition interest, while at the same time preserving the basic business

operations of Columbia and its subsidiaries which have proved to be

financially sound.  Columbia Creditors and Stockholders are urged to vote for

acceptance of the Columbia Plan as a prompt, cost-effective and balanced

solution for all concerned.




                                     I-30
<PAGE>   146

II.  OVERVIEW OF THE PLAN

     THE FOLLOWING IS A BRIEF OVERVIEW OF CERTAIN MATERIAL PROVISIONS OF THE
COLUMBIA PLAN.  THIS OVERVIEW IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO THE
PROVISIONS OF THE COLUMBIA PLAN, A COPY OF WHICH IS ATTACHED HERETO AS EXHIBIT
1.  ADDITIONALLY, SECTION VI, "PLAN TREATMENT OF CLAIMS AND SUMMARY OF OTHER
PLAN PROVISIONS", OF THIS DISCLOSURE STATEMENT CONTAINS A DETAILED NARRATIVE
DESCRIPTION OF THE TREATMENT OF CLAIMS UNDER AND MECHANICS FOR IMPLEMENTATION
OF THE COLUMBIA PLAN.

     A.  REORGANIZED COLUMBIA

     Under the Columbia Plan, Reorganized Columbia will continue to operate as

a public utility holding company under the HCA, and will retain ownership of

the stock of its various subsidiaries, including TCO.  Aside from those

changes specifically identified in Section X.G, "Reorganized Columbia -

Management," the Columbia Plan does not provide for any further changes to

Columbia's current management.

     B.  SUMMARY OF DESCRIPTION OF CLASSES AND DISTRIBUTIONS

     The Columbia Plan proposes the payment of substantially all Allowed

Claims in full, together with appropriate post-petition interest, in cash or,

in the case of Borrowed Money Claims in excess of $15,000, in a combination of

New Indenture Securities, with maturities ranging from five to thirty years,

shares of Preferred Stock and DECS (subject to an election to have Reorganized

Columbia repurchase such shares if certain conditions are satisfied) and, if

available, cash.  Holders of Securities Action Claims will have the option to

accept an Offer of Settlement.  If a Holder of such a Claim rejects the Offer

of Settlement, Reorganized Columbia will assume the Claim.  In





                                     II-1
<PAGE>   147
addition, if Holders of an insufficient amount of Securities Action Claims

accept the Offer of Settlement, Reorganized Columbia will also assume the

Claims of accepting Holders.  All Claims so assumed will be satisfied when

Allowed through payment in a combination of cash, debt securities or equity

securities, as determined by Reorganized Columbia.  The Columbia Plan further

provides that the current Holders of Columbia Common Stock will retain their

holdings.

     The following table summarizes each category of Claims and Interests and

indicates, where appropriate, the classification of Claims and Interests and

the estimated amount at which Claims in each Class will be Allowed.  As the

Columbia Plan contemplates the payment in full of all Allowed Claims, the

distribution for each Class thereunder is one hundred percent.

     The estimated Claims amounts in the following table assume an Effective

Date of December 31, 1995.(1)   Such amounts constitute Columbia's present

estimates of the amounts of such Claims upon resolution of all Disputed

Claims.  The estimated amounts separately state the principal portions of the

Claim 


- --------------------------
(1)  Unless otherwise specified, all references to the Effective Date in this
     Disclosure Statement assume an Effective Date of December 31, 1995. The
     actual Effective Date may differ from the assumed Effective Date set
     forth herein for a variety of substantive and scheduling reasons,
     including the ultimate date set by the Bankruptcy Court for the
     Confirmation hearing and the date upon which conditions to the Effective
     Date have been satisfied or, if waivable, waived.  See Section VI.K.2,
     "Plan Treatment of Claims and Summary of Other Plan Provisions -
     Conditions Precedent to Confirmation and Consummation of the Columbia
     Plan - Conditions to the Effective Date".

                                     II-2
<PAGE>   148

(which in most cases is the pre-petition Claim amount) and, where appropriate,

estimates of accrued post-petition interest on pre-petition indebtedness

through the Effective Date, calculated as provided in the Columbia Plan.

     By far the largest percentage of all Claims Filed against Columbia's

Estate are claims for principal, interest and other amounts due for Borrowed

Money Claims.  Columbia and its advisors have worked with the Columbia

Creditors' Committee and the Columbia Equityholders' Committee and their

advisors and the representatives of and advisors to various Creditors in an

effort to resolve discrepancies in the amounts of those Claims.  The method of

calculating post-petition interest on the Borrowed Money Claims, as set forth

in the Columbia Plan, has been determined by Columbia after extensive

negotiation with the Columbia Creditors' Committee and the Columbia

Equityholders' Committee, and is to be approved by the Bankruptcy Court as

part of the Confirmation of the Columbia Plan, if not previously approved. 

Columbia believes that, except as to the Securities Action Claims, there are

no material disputes over the amount at which Claims are to be Allowed. 

     Claims in Class 3.2, Class 4 and Class 8 are, or are deemed, impaired

under the Columbia Plan.  All other Classes are unimpaired and, thus, will not

vote on the Columbia Plan.

     Annexed to this Disclosure Statement as Exhibit 6 is the Payout Analysis

of Columbia Plan Dated April 12, 1995 (the "Payout Analysis").  The Payout

Analysis sets forth the 




                                     II-3
<PAGE>   149
estimated level of distributions under the Columbia Plan in respect of all

Claims, classified and unclassified, and is premised upon the treatment of

Claims described herein, as well as the fulfillment of the numerous

assumptions set forth in this Disclosure Statement.


        TABLE OF SUMMARY DESCRIPTION OF CLASSES AND THEIR DISTRIBUTIONS



DESCRIPTION AND ESTIMATION                     DESCRIPTION OF
OF CLAIMS AND INTERESTS                        DISTRIBUTION UNDER THE PLAN
- --------------------------                     ---------------------------

1. UNCLASSIFIED CLAIMS
   -------------------

PROFESSIONAL CLAIMS: Claims                    Each Holder of an Allowed 
for unpaid fees and expenses                   Professional Claim will   
of Professionals and amounts                   receive cash in the amount   
for compensation allowed                       of such Claim on the later   
under Sections 330(a) and                      of the Effective Date or the 
503(b) of the Bankruptcy                       tenth day after the Claim is 
Code.                                          Allowed.  Post-petition      
                                               interest will be payable, to 
  ESTIMATED PAYMENTS:                          the extent Allowed by the    
  $4.8 million                                 Bankruptcy Court, on amounts 
                                               held back by order of the    
  DISTRIBUTION: 100%                           Bankruptcy Court with        
                                               respect to interim fee       
                                               applications.  Professional  
                                               Claims are unimpaired.       
                                                                            
                                                                            
                                                                            
POST-PETITION OPERATIONAL                      Each Post-Petition           
CLAIMS: Claims incurred by                     Operational Claim will be    
Columbia in the ordinary                       assumed by Reorganized       
course of its business post-                   Columbia and paid in the     
petition, including tax                        ordinary course of business  
obligations, trade vendor                      according to the terms of    
and supplier obligations and                   the transaction giving rise  
post-petition obligations                      to such Claim.  Post-        
under contracts and leases,                    Petition Operational Claims  
but excluding PBGC Guarantee                   are unimpaired.              
Claims included in Class                                                    
6.2.                                                                        
                                                                            
  ESTIMATED PAYMENTS:                                                       
  Not applicable                                                            
                                                                            
  DISTRIBUTION: 100%                                                        
                                                                            
ASSUMED EXECUTORY CONTRACT                     Each Holder of an Allowed    
CLAIMS:  Claims arising from                   Assumed Executory Contract   
the assumption by Columbia                     Claim will receive cash in   
of pre-petition executory                      the amount of such Claim,    
contracts, including, if the                   together with post-petition  
Bankruptcy Court shall                         interest at the non-default  
approve, the TAA, and                          contractual rate, if one is  
unexpired leases pursuant to                   provided, and otherwise at   
Section 365(b)(1) of the                       the rate of 6% per annum, or 
Bankruptcy Code.                               as otherwise provided by the 
                                               Bankruptcy Court.            
  ESTIMATED PAYMENTS:                          Distribution will be made on 
  Pre-Petition Claims: $23.9 million           the Effective Date or such   
  Post-Petition Interest: $ 5.3 million        earlier or later time as may 
                                               be authorized by the         
                                               Bankruptcy Court.  Any       
                                     



                                     II-4
<PAGE>   150
  DISTRIBUTION: 100%                           Assumed Executory Contract    
                                               Claim that is Allowed after   
                                               the Effective Date will be    
                                               paid in full in cash,         
                                               together with such interest,  
                                               within forty-five days after  
                                               the end of the Calendar       
                                               Quarter in which such Claim   
                                               is Allowed.  Assumed          
                                               Executory Contract Claims     
                                               are unimpaired.               
                                                                             
                                                                             
                                                                             
U.S. TRUSTEE'S FEE CLAIMS:                     The U.S. Trustee's Fee        
The quarterly statutory fees                   Claims which remain unpaid    
owed to the United States                      and outstanding as of the     
Trustee.                                       Effective Date will be paid   
                                               in full in cash.  The U.S.    
  ESTIMATED PAYMENTS: $5,000                   Trustee's Fee Claims are      
                                               unimpaired.                   
  DISTRIBUTION: 100%                 





MISCELLANEOUS ADMINISTRATIVE                   Miscellaneous Administrative    
CLAIMS:  All Administrative                    Claims that have been           
Claims not included in the                     liquidated prior to the         
previous categories of                         Effective Date shall be paid    
Unclassified Claims,                           in full in cash on the          
including (i) contingent                       Effective Date. Any             
indemnification Claims of                      Miscellaneous Administrative    
officers, directors,                           Claims that remain              
employees and agents of                        unliquidated as of the          
Columbia, TCO or other                         Effective Date will be          
subsidiaries of Columbia,                      assumed by Reorganized          
(ii) post-petition personal                    Columbia and paid as they       
injury Claims, (iii)                           come due, as otherwise          
indemnity Claims under the                     agreed by the relevant          
Columbia Canada Sale                           Person or as directed by the    
Agreement in favor of the                      Bankruptcy Court.  If the       
purchaser of the stock of                      indemnity Claims under the      
Columbia Canada and (iv)                       Columbia Canada Sale            
indemnity Claims under                         Agreement are assumed, the      
Columbia's indemnity                           present Kotaneelee Escrow       
agreement with the Reliance                    will be adjusted in             
Group.                                         accordance with the             
                                               provisions of the Canada        
  ESTIMATED PAYMENTS:                          Sale Agreement.                 
  $470,000                                     Miscellaneous Administrative    
                                               Claims that have been           
  DISTRIBUTION: 100%                           liquidated prior to the         
                                               Effective Date shall receive    
                                               post-petition interest at       
                                               the rate of 6% per annum, or    
                                               as otherwise provided by the    
                                               Bankruptcy Court.               
                                               Miscellaneous Administrative    
                                               Claims are unimpaired.          
                                     
PRIORITY TAX CLAIMS: Claims                    Each Holder of an Allowed      
attributable to income                         Priority Tax Claim will        
taxes, property taxes and                      receive cash in the            
any other taxes entitled to                    aggregate amount of such       
priority in payment pursuant                   Claim and post-petition        
to Section 507(a)(8) of the                    interest thereon calculated    
Bankruptcy Code.                               at the appropriate statutory   
                                               rate, if one is provided,      
  ESTIMATED PAYMENTS:                          and otherwise at the rate of   
  Pre-Petition Claims: $111.9 million          6% per annum, or as            
  Post-Petition Interest: $24.6 million        otherwise provided by the      
                                               Bankruptcy Court; provided,    
                                               however, that with respect     
                                               to amounts due to the IRS,     
  DISTRIBUTION: 100%                           Columbia shall pay post-       
                                               petition interest as           
                                               provided in the IRS Order.     
                                               Distribution will 


                                     II-5

<PAGE>   151
                                               be made on the Effective Date 
                                               if the Claim is then Allowed or,
                                               if not, then within thirty days
                                               of allowance if subsequently   
                                               Allowed; provided, however,    
                                               except that, with respect to   
                                               any such Claim for Federal     
                                               income taxes and post-         
                                               petition interest thereon,     
                                               (i) Columbia will pay such     
                                               Claims in equal annual         
                                               installments over the course   
                                               of six years, as measured      
                                               from the date such Claims      
                                               were first assessed, or such   
                                               earlier date as may be         
                                               determined by Reorganized      
                                               Columbia and (ii) Columbia     
                                               will, on the Effective Date,   
                                               be reimbursed by TCO for any   
                                               portion of the Claim           
                                               allocable to TCO under the     
                                               TAA and in turn will           
                                               reimburse its other            
                                               subsidiaries for any sums      
                                               due to such subsidiaries       
                                               under the TAA.  Priority Tax   
                                               Claims are unimpaired.         

2.  SECURED CLAIMS
    --------------
 
CLASS 1:  DIP FACILITY                         The DIP Facility Claim will  
CLAIM:  The Claim of                           be paid in full on the       
Chemical Bank as Agent under                   Effective Date and the DIP   
the DIP Facility.                              Facility will terminate by   
                                               its terms on the Effective   
  ESTIMATED PAYMENTS:                          Date and any then            
  $48,000                                      outstanding letters of       
                                               credit under the DIP         
  DISTRIBUTION: 100%                           Facility, if not extended by 
                                               agreement between            
                                               Reorganized Columbia and     
                                               Chemical Bank, will be       
                                               replaced on terms acceptable 
                                               to Reorganized Columbia.     
                                               Any Deficiency Claim will be 
                                               treated as a "superpriority" 
                                               Administrative Expense       
                                               Claim. The DIP Facility      
                                               Claim is unimpaired.         
3.  UNSECURED CLAIMS         
    ----------------
      
CLASS 2: UNSECURED NON-                        Each Holder of an Allowed     
BORROWED MONEY CLAIMS:  All                    Class 2 Claim will receive,   
Unsecured Claims that are                      on the Effective Date, cash   
not otherwise classified                       in an amount equal to the     
under the Plan, including                      Allowed amount of such        
Unsecured Claims for                           Claim, together with post-    
uncashed checks,                               petition interest at the      
intercompany payables and                      rate of 6% per annum, or as   
other trade payables.                          otherwise determined by the   
                                               Bankruptcy Court.  Class 2    
  ESTIMATED PAYMENTS:                          Claims are unimpaired.        
  Pre-Petition Claims: $1.0 million  
  (net of setoffs)

   Post-Petition Interest: $0.3 million

  DISTRIBUTION: 100%
                                               Each Holder of a Class 3.1   
CLASS 3.1: UNSECURED                           Claim will receive, on the   
BORROWED MONEY CONVENIENCE                     Effective Date, payment in   
CLAIMS:  Unsecured Claims                      full in cash of the          
for borrowed money that                        aggregate of the Allowed     
would be classified as a                       amount of its Claim and      
Class 3.2 Claim but for the                    post-petition interest       
fact that such Claims did                      thereon calculated in        
not exceed $15,000 as of the                   accordance with the          
Petition Date.  Columbia                       paragraph of Schedule 3.2    
believes all such                              attached to the Columbia     
Claims to be Debenture                         Plan applicable to such      
Claims.                                        Claim had it been classified 




                                     II-6
<PAGE>   152
                                                                            
   ESTIMATED PAYMENTS:                         as a Class 3.2 Claim.  Class 
   Included in Estimated                       3.1 Claims are unimpaired.   
   Payments for

   Debenture Claims in Class 3.2
                                      
   DISTRIBUTION: 100% 



                                     
CLASS 3.2: UNSECURED                           Each Holder of an Allowed
BORROWED MONEY CLAIMS:  All                    Class 3.2 Claim shall    
claims for borrowed money                      receive, on the Effective
not included in Class 3.1,                     Date, payment in full of the 
consisting of the following:                   aggregate of the Allowed     
                                               amount of its Claim and      
                                               post-petition interest       
                                               thereon calculated in        
a. DEBENTURE CLAIMS:  All claims               accordance with the          
   arising under the Debentures.               paragraph of Schedule 3.2    
                                               attached to the Columbia     
   ESTIMATED PAYMENTS:                         Plan applicable to such      
   Pre-Petition Claims: $926.7 million         Claim.  Payment will be      
   Post-Petition Interest: $427.1 million      effected by distributing to  
                                               or for the benefit of each   
                                               such Holder its Pro Rata     
                                               Share of each of (i) the     
                                               Cash Consideration, if any,  
                                               (ii) each Issue of New       
b. $500 MILLION CREDIT AGREEMENT CLAIMS:       Indenture Securities, (iii)  
   All Claims (other than Auction Note         shares of DECS having a      
   Claims) arising under the $500 Million      Liquidation Value of $200    
   Credit Agreement.                           million and (iv) shares of   
                                               Preferred Stock having a     
   ESTIMATED PAYMENTS:                         Liquidation Value of $200    
   Pre-Petition Claims: $101 million           million; subject to          
   Post-Petition Interest: $31.5 million       adjustment to avoid issuance 
                                               of fractional shares, odd    
c. $750 MILLION CREDIT AGREEMENT CLAIMS:       lots and fractional          
   All Claims arising under the $750 Million   interests in New Indenture   
   Credit Agreement.                           Securities.  Holders of      
                                               Allowed Class 3.2 Claims may 
   ESTIMATED PAYMENTS:                         elect to have the shares of  
   Pre-Petition Claims: $ 404.5 million        Preferred Stock and DECS     
   Post-Petition Interest: $ 138.2 million     issued to them repurchased   
                                               by Reorganized Columbia.  If 
d. COMMERCIAL PAPER CLAIMS: All Claims         Holders receiving Preferred  
   arising under the Commercial Paper.         Stock and DECS having an     
                                               aggregate Liquidation Value  
   ESTIMATED PAYMENTS:                         of $200 million so elect,    
   Pre-Petition Claims: $ 268 million          Reorganized Columbia will    
   Post-Petition Interest: $ 89.5 million      endeavor in good faith, to   
                                               complete a public offering   
                                               of its securities within 180 
                                               days of the Effective Date   
                                               and, if successful, will     
                                               purchase such DECS and       
                                               Preferred Stock for a price  
                                               equal to their Liquidation   
                                               Value, less applicable       
                                               commissions and discounts in 
                                               connection with such         
                                               offering plus accrued but    
                                               unpaid dividends, if any,    
                                               (or may, if it elects,       
                                               purchase such securities     
                                               with other funds available   
                                               to it at their Liquidation   
                                               Value).  If the public       
                                               offering is unsuccessful,    
                                               (and Reorganized Columbia    
                                               does not exercise its right  
                                               to purchase with funds from  
                                               other sources) such Holders  
                                               will retain the Preferred    
                                               Stock and the DECS issued to 
                                               them under the Columbia      
                                               Plan.  Class 3.2 Claims are  
                                               impaired.                    
                                                                            


                                     II-7
<PAGE>   153

e. BID NOTE CLAIMS:  All Claims arising under        
   the Bid Notes.           
                            
   ESTIMATED PAYMENTS:      
   Pre-Petition Claims: $ 76.6 million                
   Post-Petition Interest: $ 26.3 million              


f. AUCTION NOTE CLAIMS:  All Claims arising
   under the Auction Notes.                                                 
                                                                            
   ESTIMATED PAYMENTS:                                                      
   Pre-Petition Claims: $ 45.4 million 
   Post-Petition Interest: $ 15.6 million 
                                                                            
                                                                            
g. MEDIUM TERM NOTE CLAIMS: All Claims
   arising under the Medium Term Notes.
                                                                            
   ESTIMATED PAYMENTS:                                                      
   Pre-Petition Claims: $ 471.3 million 
   Post-Petition Interest: $ 225.7 million 
                                                                            
                                                                            
h. LESOP CLAIMS:  All Claims arising under
   the LESOP Guaranty.                                                      
                                                                            
   ESTIMATED PAYMENTS:                                                      
   Pre-Petition Claims: $ 87 million
   Post-Petition Interest: $ 3.9 million
   (after the application of proceeds
   of sale of the Columbia Common
   Stock held by the LESOP Trustee)
                                                                            
i. RATE SWAP CLAIMS:  All Claims arising
   under the Rate Swap Agreement.
                                                                            
   ESTIMATED PAYMENTS:                                                      
   Pre-Petition Claim: $ 3.2 million 
   Post-Petition Interest: $ 0.8 million
                                                                            
   DISTRIBUTION ON ALL CLASS 3.2 CLAIMS: 100%
                                                                             
                                                                             
4. SECURITIES CLAIMS                                                         
   -----------------                                                          

CLASS 4: SECURITIES ACTION                     Columbia proposes to make an  
CLAIMS: All Claims arising                     Offer of Settlement pursuant   
from the Securities Action,                    to which Columbia and          
the Holders of which have                      certain non-debtors shall     
complied with the                              contribute up to $18 million  
Supplemental Bar Date Order.                   to settle the Securities      
                                               Action Claims.  The Offer of  
   ESTIMATED PAYMENTS:                         Settlement provides a range   
   $18 million                                 of recoveries for those       
                                               Holders who purchased         
                                               Columbia debt and equity      
                                               securities between March 1,   
                                               1990 and June 18, 1991 and    
                                               either
                        
                                     II-8

<PAGE>   154
   DISTRIBUTION: 100%                          continued to hold such 
                                               securities through June
                                               19, 1991 or sold such       
                                               securities during the period
                                               from March 31, 1991 through 
                                               June 18, 1991.  Holders of  
                                               Securities Action Claims not
                                               satisfying these criteria   
                                               shall receive nothing under 
                                               the Offer of Settlement.  If
                                               the proposed Settlement     
                                               Amount is not enough to     
                                               satisfy the minimum amount  
                                               of the range of proposed    
                                               recoveries, it may be       
                                               increased through additional
                                               cash contributions by the   
                                               Contributors or the issuance
                                               of debt and equity          
                                               securities by Columbia or,  
                                               alternatively, Columbia may 
                                               choose to withdraw the Offer
                                               of Settlement.  Holders of  
                                               Class 4 Claims may choose   
                                               not to accept the Offer of  
                                               Settlement by not voting to 
                                               accept the Columbia Plan.   
                                               However, Columbia may       
                                               withdraw the Offer of       
                                               Settlement if Holders of    
                                               more than 25% of the        
                                               Qualifying Class 4 Claims do
                                               not accept the Columbia     
                                               Plan.  Complying Class 4    
                                               Claimants that are not      
                                               Qualifying Class 4 Claimants
                                               and Qualifying Class 4      
                                               Claimants that do not vote  
                                               to accept the Columbia Plan 
                                               will have their Securities  
                                               Action Claims reclassified  
                                               to, and treated as, Class 7 
                                               Claims.  In addition, if    
                                               Columbia withdraws the Offer
                                               of Settlement, all Holders  
                                               of such Claims shall have   
                                               their Claims reclassified   
                                               to, and treated as, Class 7 
                                               Claims.  Class 4 Claims are 
                                               deemed impaired.            
5. INTERCOMPANY CLAIM
   ------------------

CLASS 5: INTERCOMPANY CLAIM:                   On the Effective Date,        
All Claims asserted against                    pursuant to the Columbia      
Columbia and CNR on behalf                     Omnibus Settlement, the       
of TCO in the Intercompany                     Intercompany Claim shall be   
Claims Litigation and any                      satisfied, settled and        
claims or causes of action                     discharged in full.  The      
against Columbia or CNR                        Class 5 Claim is unimpaired.  
arising out of the same or                     
similar facts of                                                             
circumstances.                                                               
                                                                             
                                                                             
6.  ASSUMED CLAIMS
    --------------

CLASS 6.1:  Indemnity Claims                   Each Holder of a Class 6.1    
of Officers and Directors:                     Claim that is Allowed on the  
All claims of officers,                        Effective Date will receive,  
directors, employees and                       on the Effective Date, cash   
agents of Columbia, TCO or                     in an amount equal to the     
Columbia's other                               Allowed amount of such        
subsidiaries, to the extent                    Claim.  All Indemnity Claims  
proceeds from Columbia's D&O                   which are not Allowed on the  
Insurance policies are                         Effective Date shall survive  
inadequate or unavailable to                   and be unaffected by the      
satisfy such Claims, arising                   Confirmation Order and will   
from liabilities for which                     be assumed and paid by        
Columbia has an indemnity                      Reorganized                   
obligation under Delaware                      Columbia if and when due and  
law, Columbia's certificate                    payable.  Class 6.1 Claims    
of incorporation or                            are unimpaired.               
otherwise.                                     
                                                                            

                                     II-9

<PAGE>   155
                                                                            
   ESTIMATED PAYMENTS:                                                      
   Not applicable                                                           
                                                                            
   DISTRIBUTION:  100%                                                      

                                                                            
CLASS 6.2:  PBGC Guarantee                     All PBGC Guarantee Claims     
Claims: Columbia's secondary                   shall survive and be          
obligations to the PBGC for                    unaffected by the             
contributions to its                           Confirmation Order and will   
subsidiaries' pension fund.                    be assumed and paid by        
                                               Reorganized Columbia if and   
   ESTIMATED PAYMENTS:                         when due and payable.  Class  
   Not applicable                              6.2 Claims are unimpaired.    
                                                        
   DISTRIBUTION:  100%                         
                                               
CLASS 6.3:  Shawmut                            The Shawmut Guarantee Claim   
Guarantee Claim: Columbia's                    shall survive and be          
secondary obligations to                       unaffected by the             
Shawmut Bank, N.A. for                         Confirmation Order and will   
certain of the obligations                     be assumed and paid by        
of Columbia Gas of Ohio,                       Reorganized Columbia if and   
Inc. for payments under the                    when due and payable.  The    
lease for the latter's                         Class 6.3 Claim is            
headquarters located in                        unimpaired.                   
Ohio.                                                   
                        
   ESTIMATED PAYMENTS:  
   Not applicable       
                        
   DISTRIBUTION:  100%  
                        
                        
                        
                        
                        
                        
7.  INTERESTS AND REJECTING                                                   
    -----------------------
    SECURITY ACTION CLAIMS
    ----------------------
                   
CLASS 7:  REJECTING                            Class 7 Claims shall be        
SECURITIES ACTION CLAIMS:                      assumed by Reorganized    
All Securities Action Claims                   Columbia.  Class 7 Claims 
classified in Class 4 as of                    are unimpaired.           
the Plan Mailing Date, the                     
Holders of which do not vote                                            
to accept the Plan.                                                     
                                                                        
                                                 
CLASS 8:  INTERESTS: All                       All Interests shall survive.
Interests in Columbia Common                   Class 8 Interests may be       
Stock (other than Securities                   affected by the Plan as a 
Action Claims).                                result of the issuance of 
                                               shares of DECS and the    
                                               possible issuance of      
                                               additional shares of      
                                               Columbia Common Stock.    
                                               Class 8 Interests are deemed
                                               impaired.                    






                                     II-10
<PAGE>   156
III. BUSINESSES

     A.   COLUMBIA'S HISTORIC CORPORATE STRUCTURE AND OPERATION

          1.  GENERAL

     Columbia was incorporated in Delaware in 1926 following the merger of

Columbia Gas and Electric Company and Ohio Fuel Corporation.  Columbia became

a registered public utility holding company in 1938 under the HCA and,

pursuant to regulation under the HCA, divested its electric utilities in 1946,

thereby resulting in a single, integrated natural gas system.

     The post-World War II demand for natural gas led to Columbia's expansion

of its pipeline system from Appalachia to the Southwest and of its exploration

and underground storage programs.  Today, Columbia is one of fourteen public

utility holding companies registered under the HCA and one of three integrated

natural gas systems so registered.

     Columbia today has eighteen subsidiaries, all but one of which are

wholly-owned, comprising one of the largest natural gas systems in the United

States.  Columbia's subsidiaries are engaged in the three principal segments

of the natural gas business -- exploration and production, interstate

transmission and local distribution -- as well as other energy ventures such

as cogeneration, propane marketing and non-regulated gas marketing. 

Throughout most of this century, the System has grown in response to

increasing demand for natural gas and market and regulatory changes in the

industry.  The System is a major





                                     III-1
<PAGE>   157
supplier of natural gas in the United States.  A leader in the industry,

Columbia, through its subsidiaries, has developed new energy ventures such as

cogeneration plants (producing electricity and thermal energy from natural

gas-fueled generating systems for manufacturing and consumer needs),

established one of the country's first natural gas market centers in response

to a changing domestic energy market, is recommissioning part of North

America's largest liquefied natural gas facility at Cove Point, Maryland, and

is utilizing new technologies such as natural gas vehicles, appliances and

horizontal drilling.  Columbia also has pursued environmental conservation and

safety, as exemplified by TCO's and Columbia Gulf's environmental assessment

and remediation programs along their approximately 24,000-mile pipeline system

and Columbia LNG's conservation measures at its Cove Point facility.

          2.   COLUMBIA BUSINESSES

     The operations of Columbia's subsidiaries are briefly summarized below.

               a.  EXPLORATION AND PRODUCTION

     Two Columbia subsidiaries, Columbia Gas Development Corporation and

Columbia Natural Resources, Inc. ("CNR"), explore for, develop, acquire and

produce natural gas and oil in the United States.  These companies hold

interests in more than two million net acres of gas and oil leases and have

proved oil and gas reserves in excess of 750 billion cubic feet of gas




                                     III-2
<PAGE>   158
equivalent.  These "E&P" operations are focused in the Appalachian, Arkoma,

Permian, and Williston basins, both onshore and offshore in the Gulf Coast

areas of Texas and Louisiana, and in Utah and California.  Columbia's E&P

subsidiaries own more than 6,100 net natural gas and oil wells.  In 1994,

these companies produced 66.7 billion cubic feet of natural gas and 3.6

million barrels of crude oil.

               b.  INTERSTATE TRANSMISSION

     Columbia owns two interstate natural gas transmission companies, TCO and

Columbia Gulf Transmission Company ("Columbia Gulf"), which operate an

approximately 24,000 mile pipeline network that extends from offshore in the

Gulf of Mexico to New York and the eastern seaboard.  They serve, directly or

through local retail distribution companies ("LDCs"), more than eight million

customers in fifteen Northeastern, Middle Atlantic, Midwestern and Southern

states and the District of Columbia.  Additionally, TCO operates one of the

nation's largest underground natural gas storage systems.

     By virtue of FERC Order No. 636, which took effect in 1993, TCO and

others in the pipeline industry have had to restructure their operations,

becoming primarily transporters, rather than merchants, of natural gas.

               c.  LOCAL DISTRIBUTION

     Columbia's five distribution subsidiaries provide natural gas service to

more than 1.9 million residential, commercial and 





                                     III-3
<PAGE>   159
industrial customers in Ohio, Pennsylvania, Virginia, Kentucky and Maryland. 

With more than 29,000 miles of distribution pipelines, these companies serve

major markets such as:  Columbus, Lorain, Parma, Springfield and Toledo in

Ohio; Gettysburg, York and a part of Pittsburgh in Pennsylvania; Lynchburg,

Staunton, Portsmouth and Richmond suburbs in Virginia; Ashland, Frankfort and

Lexington in Kentucky; and Cumberland and Hagerstown in Maryland.  In 1994,

these five local distribution companies provided approximately 513 billion

cubic feet of natural gas to their customers.

               d.  COLUMBIA GAS SYSTEM SERVICE CORPORATION 

Columbia Gas System Service Corporation (the "Columbia Service Corporation"),

a mutual service company approved by the SEC under the HCA, cost-effectively

provides a broad range of managerial, specialized and other business services

to support the operations of Columbia and its subsidiaries.  These services

include electronic data processing, risk management, accounting, legal,

financial, environmental, tax, human resources, auditing and other services

for Columbia and its subsidiaries.  Through economies of scale and efficiency,

the Columbia Service Corporation is able to service the diverse and

specialized needs of Columbia System businesses.





                                     III-4
<PAGE>   160
               e.  OTHER ENERGY OPERATIONS

     Columbia companies are also engaged in other energy businesses which are

highlighted below.

     Columbia Energy Services Corporation is the System's non-regulated

affiliate which markets natural gas and provides an array of supply and fuel

management services to distribution companies, independent power producers and

other large end users both on and off Columbia's transmission and distribution

pipeline systems.

     Columbia Propane Corporation and Commonwealth Propane, Inc. sell propane

at wholesale and retail to more than 68,000 customers in Virginia,

Pennsylvania, Ohio, Maryland, North Carolina, Kentucky, New York and West

Virginia.

     Columbia LNG Corporation ("Columbia LNG"), an approximately 92%-owned

subsidiary of Columbia, in partnership with a subsidiary of Potomac Electric

Power Company, has started construction of a FERC-approved natural gas peaking

operation at the Cove Point, Maryland facility referred to above.  Peaking and

related services are expected to start in late 1995 to meet the peak demands

for natural gas in the mid-Atlantic area.

     TriStar Ventures Corporation ("TriStar") develops new business

opportunities in power generation and other energy-related markets.  Its

primary focus is the development, ownership and operation of natural gas-

fueled cogeneration and independent power projects.  Its cogeneration projects

include interests in a 




                                     III-5
<PAGE>   161
117 megawatt facility at the B.F. Goodrich manufacturing plant in Pedricktown,

New Jersey, a 44 megawatt facility at International Paper's Anitech plant in

Binghamton, New York, a 46 megawatt facility at the Progresso Foods plant in

Vineland, New Jersey and an 85 megawatt facility in Rumford, Maine.

     Columbia Coal Gasification Corporation owns more than 500 million tons of

coal reserves in the Appalachian area.  Approximately fifty percent of the

total reserves are leased to other companies for development.

     B.   PUBLIC UTILITY HOLDING COMPANY ACT REGULATION AND SYSTEM FINANCING;
          SEC APPROVAL OF THE COLUMBIA PLAN

          1.   REGULATION OF COLUMBIA BY THE SEC UNDER THE HCA; EXTERNAL AND
               INTERNAL COLUMBIA FINANCING

               a.  REGULATORY FRAMEWORK

     As noted above, Columbia is a public utility holding company, registered

and regulated by the SEC under the HCA.

     The HCA provides an extensive regulatory framework which limits the

business activities of the System to the operation of utility companies

(defined under the HCA to be the local retail distribution companies) and such

nonutility businesses as are reasonably incidental or economically necessary

or appropriate to the utility operations.  On an ongoing basis, the HCA

requires prior approval by the SEC for issuances or acquisitions of securities

by Columbia or any of its public utility subsidiaries and for acquisitions of

securities by any of its non-public utility subsidiaries.     




                                     III-6
<PAGE>   162
     The HCA also establishes controls over certain transactions among System

companies, prohibits upstream loans to a parent company and establishes

procedures for approval of a subsidiary mutual service company to provide

services to affiliates generally at cost according to strict cost accounting

and allocation standards.

     Sections 6 and 7 of the HCA govern the issuance by Columbia and any

Columbia subsidiary of its own securities, including the securities to be

issued by Columbia under the Columbia Plan or in connection therewith. 

Sections 9 and 10 of the HCA govern Columbia's acquisition of securities of

its subsidiaries.  

               b.  SYSTEM EXTERNAL AND INTERNAL FINANCING

     Substantially all outside funding of the System historically has been

implemented through public equity and debt offerings by Columbia and

borrowings by Columbia from banks and the transfer of the proceeds to Columbia

subsidiaries on comparable terms through purchases of securities from those

subsidiaries.  Because Columbia itself represents the aggregate of the

diversified credits of its subsidiaries, historically it had enjoyed ready and

cost-efficient access to the financial markets.

     With minor exceptions, all System subsidiaries finance their operations

through the issuance and sale to Columbia of common stock and the issuance and

sale to Columbia of unsecured installment promissory notes (or, in the case of

TCO after 1985, mortgage bonds secured by substantially all its assets) on

terms 





                                     III-7
<PAGE>   163
that approximate the terms of long-term debt instruments issued by Columbia. 

As with Columbia's issuance of long-term debt securities, the issuance and

purchase of subsidiary installment promissory notes are regulated under the

HCA and subject to approval by the SEC.

     Funds for inventory purchases and other short-term working capital needs

of Columbia's subsidiaries are obtained from a short-term financing vehicle

(the "System Money Pool") administered by the Columbia Service Corporation

under which subsidiaries with temporary excess funds loan those funds to

subsidiaries in the System (other than TCO) in need of funds.  To the extent

that the funds deposited in the System Money Pool are insufficient to meet the

needs of borrowing subsidiaries, Columbia deposits funds in the System Money

Pool and such funds become available for borrowing by the subsidiaries

requiring short-term working capital.  The interest rates on short-term loans

to the subsidiaries from the System Money Pool historically have been based on

the weighted average costs for Columbia's short-term transactions.  Since the

filing of Columbia's bankruptcy petition, the interest rate utilized for the

System Money Pool for borrowings and deposits has been the yield on excess

funds invested in money market instruments.  The rate on new intercompany

installment promissory notes has been based on a published market rate for

comparable utility issues.




                                     III-8
<PAGE>   164
     Columbia anticipates that, upon consummation of the Columbia Plan, it

will, for the foreseeable future, resume the financing of the operations of

the System subsidiaries in a manner similar to that described above for the

pre-Petition Date period.

          2.   HCA JURISDICTION OVER THE TERMS OF THE COLUMBIA PLAN

     Under Sections 11(f) and (g) of the HCA, the Columbia Plan must be

approved by the SEC after public notice and opportunity for hearing, and a

report by the SEC on the Columbia Plan (or an abstract of such report), made

after opportunity for hearing, must be distributed to Columbia's Stockholders

and Creditors with this Disclosure Statement.    

     Columbia will supplement this Disclosure Statement when a report has been

issued by the SEC under Section 11(g) of the HCA with respect to the Columbia

Plan.  After the filing of the Columbia Plan and this Disclosure Statement,

Columbia will submit its Plan to the SEC in accordance with HCA Section 11(f). 

Further, Columbia will seek SEC authorization under Section 11(g) to

distribute this Disclosure Statement, and SEC approval of this Disclosure

Statement and the Columbia Plan under Sections 11(f) and (g) of the HCA.  

     While pursuant to HCA Rule 49(c), SEC review of reorganization plans of

non-utility subsidiaries of registered holding companies such as TCO is not

required, several of the transactions which are or may be necessary in order

to consummate the TCO Plan (as distinguished from the TCO Plan itself) require





                                     III-9
<PAGE>   165
approvals by the SEC under the HCA.  Specifically, (i) the acquisition by

Columbia of securities of TCO in satisfaction of its existing Secured Claims

against TCO requires approval under Sections 9 and 10 and (ii) any issuance of

Common Stock or other securities of Columbia pursuant to the Columbia Plan or

the TCO Plan and Columbia's guarantees in respect of payments to Creditors

under the TCO Plan require approval under Sections 6, 7 and 12.  In each case,

public notice and an opportunity for a hearing before the SEC by interested

parties are required.

     Columbia has no reason to believe that the Columbia Plan will not be

approved by the SEC.  Similarly, neither Columbia nor TCO has any reason to

believe that the TCO Plan transactions which require approval by the SEC will

not be so approved.







                                    III-10
<PAGE>   166
IV.  SUMMARY OF SIGNIFICANT CLAIMS IN COLUMBIA'S CHAPTER 11 CASE AND THEIR
     SETTLEMENTS OR PROPOSED RESOLUTIONS

     A.   BORROWED MONEY CLAIMS AND THE NEGOTIATIONS AND SETTLEMENT OF SUCH
          CLAIMS

     The majority of the Claims filed against Columbia are unsecured claims

for amounts due under various short-term and long-term borrowing arrangements,

including: (i) Debenture Claims and Medium Term Note Claims under the 1961

Indenture, (ii) Claims under Columbia's $500 Million Credit Agreement with

Morgan Guaranty Trust Company of New York ("Morgan")(1), as agent for certain

banks, (iii) Claims under Columbia's $750 Million Credit Agreement with

Morgan, as agent for certain banks, (iv) Claims under Columbia's various

issues of Commercial Paper, (v) Claims under various Auction Notes issued by

Columbia to various Banks pursuant to the $500 Million Credit Agreement, (vi)

Claims under various Bid Notes issued by Columbia to various banks, (vii)

Claims under the Toronto Dominion Bank (N.Y. Branch) Interest Rate Swap

Agreement, dated as of November 30, 1990 and (viii) Claims under Columbia's

subordinated guaranty of the LESOP Debentures issued in connection with the

Leveraged Employee Stock Ownership Plan feature of its Employees' Thrift Plan. 

A more detailed description of the nature, amount and treatment of these

claims (collectively, the "Borrowed Money Claims") is contained in Section

VI.A, "Classification and Treatment of Claims and Interests".


- -------------------------
(1)  Terms not otherwise defined herein or heretofore in the Disclosure
     Statement, shall have the meanings ascribed to them in the Columbia Plan.



                                     IV-1
<PAGE>   167
          During the course of Columbia's Bankruptcy Case, Columbia and its

professionals have held regular discussions with the Columbia Equityholders'

and Creditors' Committees, individual Creditors, and their respective

professional advisors regarding the quantification and treatment of the

Borrowed Money Claims against Columbia.  The discussions with the Columbia

Committees have related to, inter alia, (i) the calculation and payment of

post-petition interest on the Borrowed Money Claims, including interest on

matured interest, (ii) the extent, if any, of, and the payment of, call

penalties or pre-payment premiums on Columbia's Debentures and Medium Term

Notes, (iii) the method of satisfaction of the Borrowed Money Claims, and (iv)

the structure and terms of various securities of Reorganized Columbia to be

distributed to the Borrowed Money Creditors under the Plan.

          The Columbia Creditors' Committee has maintained that, where an

estate is solvent, post-petition interest must be paid on creditor's claims 

in order for equity holders to maintain their interests.  That Committee also 

took the position that post-petition interest is to be computed generally 

based on an instrument's non-default contract rate through maturity of the 

instrument (or the Petition Date, as applicable), its default rate of interest 

(applied both to principal and missed interest payments) through the Effective 

Date, and increased by liquidated damages or call premiums, if any.  The 

Equityholders' Committee conceded that post-petition interest must be paid on 



                                     IV-2
<PAGE>   168
Creditor's Claims where the Claims are not satisfied solely with cash 

consideration.  However, the Equityholders' Committee has maintained that the 

proper method for calculating such interest should be based on a "legal rate 

of interest", such as the federal judgment rate of interest (approximately 

5.88% on the Petition Date), without interest on missed interest payments, and 

that no support existed for the payment of "call premiums".

          As a result of the discussions among the Committees and Columbia,

the proposed resolution of the issue of the calculation and payment of post-

petition interest, is in summary, as follows:

          (i) holders of Debentures, Medium Term Notes and LESOP Debentures

          will receive simple post-petition interest from the Petition Date to

          the maturity date of mandatory principal and interest payments at

          the non-default contract rates and simple interest on missed

          interest and sinking fund payments at a default rate of 8.0% to the

          Effective Date, (ii) Claimants under the $750 and $500 Million

          Credit Agreements will receive simple interest at the non-default

          contract rates to July 31, 1991 and then interest (including simple

          interest on interest payments deemed to become overdue at six-month

          intervals) at the default rate of 6-month LIBOR plus 2%, in the case

          of the $750 Million Credit Agreement, and 6-month  LIBOR plus 1.25%,

          in the case of the $500 Million Credit Agreement, in each




                                     IV-3
<PAGE>   169
          case to the Effective Date, (iii) holders of Auction Notes and Bid

          Notes will receive simple interest at non-default contract rates to

          July 31, 1991 and then interest (including simple interest on

          interest payments deemed to become overdue at six-month intervals)

          at the default rate of 6-month LIBOR plus 2% to the Effective Date,

          (iv) holders of Commercial Paper will receive simple interest at the

          non-default implicit contract rate to maturity and then interest

          (including simple interest on interest payments deemed to become

          overdue at six-month intervals) at the default rate of 6-month LIBOR

          plus 2% to the Effective Date, (v) Claimants under the Interest Rate

          Swap Agreement will receive interest at the federal funds rate plus

          1% from July 31, 1991 to the Effective Date, repriced and compounded

          daily, and (vi) for Commercial Paper, Bid Notes and Auction Notes

          that matured prior to the Petition Date, interest will be calculated

          at the contract rate plus 1% from the maturity date to the Petition

          Date, and then as described above.

     Columbia's proposed resolution of the payment of post-petition interest

is embodied in the Columbia Plan.  For a more detailed description of the

calculation of the amount of and treatment of the Borrowed Money Claims, see

Section VI.A, "Classification and Treatment of Claims and Interests". 






                                     IV-4
<PAGE>   170
     B.   THE INTERCOMPANY CLAIMS LITIGATION

          1.   STIPULATION AND ORDER CONCERNING PROSECUTION OF THE
               INTERCOMPANY CLAIMS

     On February 4, 1992, the Bankruptcy Court approved a stipulation among

Columbia, TCO and the TCO Creditors' Committee assigning to the TCO Creditors'

Committee the right to investigate and prosecute, on behalf of the TCO Estate,

all claims against Columbia or Columbia Natural Resources, Inc. ("CNR")

relating to transactions occurring prior to the Petition Date that may give

rise to actions under sections 510(c), 544, 545, 547, 548, 550(a) and 550(b)

of the Bankruptcy Code or under applicable non-bankruptcy law for fraudulent

conveyance, equitable subordination, illegal dividend, corporate waste, alter

ego, piercing the corporate veil, preference, invalidation of unperfected

liens or security interests and breach of fiduciary duty (the "Intercompany

Claims"). 

     The Stipulation allowed the claims to be pursued without conflict by the

TCO Creditors that potentially had the most to gain from the litigation and

provided that TCO would cooperate with the TCO Creditors' Committee in the

investigation and prosecution of all Intercompany Claims.  The order approving

the Stipulation reserved to TCO and Columbia the right to include settlement

of the litigation in any plan(s) of reorganization.  Settlement negotiations

were conducted prior to the filing of a complaint, but did not produce a

settlement.




                                     IV-5
<PAGE>   171
          2.   INTERCOMPANY CLAIMS LITIGATION PROCEEDINGS

     On March 18, 1992, the TCO Creditors' Committee filed a Complaint against

Columbia and CNR asserting the Intercompany Claims (the "Intercompany

Complaint") and filed a proof of claim against Columbia based upon the

Intercompany Claims, which are summarized below.

               a.  ALLEGATIONS OF EQUITABLE SUBORDINATION

     The Intercompany Complaint asserted that from 1985 to the filing of TCO's

bankruptcy petition in 1991, Columbia had used its position as sole

stockholder of TCO to gain for itself an unfair advantage over TCO's

unaffiliated creditors by maintaining TCO in an undercapitalized or insolvent

condition while Columbia removed valuable assets from TCO and repositioned

itself as a secured creditor in TCO's remaining assets so that Columbia would

be at the head of the creditor line in the event of a TCO bankruptcy.  Among

the transactions challenged as part of the equitable subordination case were

the transfer of TCO's oil, gas and coal properties to Columbia and CNR in

exchange for the return of TCO stock; the payment of $130 million in dividends

to Columbia; the use of new secured debt to Columbia to pay principal and

interest on TCO's pre-1985 unsecured debt to Columbia; and the increase in

TCO's secured debt to Columbia prior to bankruptcy.  The Complaint alleged

that these actions had conferred an unfair advantage on Columbia over TCO's

other creditors and caused injury to TCO and its creditors.  As a remedy for

this conduct, the Complaint sought the equitable 




                                     IV-6
<PAGE>   172
subordination of Columbia's claims against the TCO estate to the claims of

TCO's other creditors.

               b.  ALLEGATIONS SEEKING RECHARACTERIZATION OF DEBT AS EQUITY

     The Intercompany Complaint also asserted that Columbia's secured advances

to TCO from 1985 through 1991 should be recharacterized as equity

contributions because those loans were made by an insider at a time when TCO

was undercapitalized or had inadequate equity capital such that no

disinterested lender would have been willing to lend a like amount of funds to

TCO on similar terms.  The Intercompany Complaint asserted that Columbia's use

of secured debt to finance TCO in these circumstances inequitably shifted the

risk of loss from Columbia to TCO's other creditors.

               c.  ALLEGATIONS OF FRAUDULENT CONVEYANCES

     The Intercompany Complaint further asserted that the transfer of TCO's

oil, gas and coal properties to CNR, the payment of dividends to Columbia

after July 31, 1988, the payment of principal and interest on TCO's prior

unsecured debt to Columbia after July 31, 1988, and the untimely perfection of

certain of Columbia's liens during that period constituted fraudulent

conveyances under applicable state and federal law.  The Complaint alleged

that those transfers were made with the intent to hinder, delay or defraud

TCO's Creditors; that TCO was insolvent or engaged in business with

unreasonably small capital at the time of those transfers; and that TCO did

not receive fair consideration.





                                     IV-7
<PAGE>   173
               d.  ALLEGATIONS OF VOIDABLE REDUCTION IN CAPITAL

     The Intercompany Complaint further alleged that TCO's capital was

impaired as a result of the transfer of TCO's oil, gas and coal properties to

CNR and that, therefore, that transfer  was avoidable under applicable state

and federal law.  That claim was withdrawn at trial.

               e.  ALLEGATIONS OF PREFERENCES

     The Intercompany Complaint also asserted that TCO's payments of principal

and interest on its unsecured debt to Columbia and the untimely perfection by

Columbia of certain liens on TCO real estate between July 31, 1990, and July

31, 1991, were transfers made on account of antecedent debts when TCO was

insolvent which enabled Columbia to receive more than it would have received

in a liquidation of TCO under Chapter 7, and thus voidable preferences under

section 547 of the Bankruptcy Code.

          3.   RESPONSE OF COLUMBIA AND CNR

     Columbia's response to the Intercompany Complaint was, among other

things, that:

               (i) with respect to the fraudulent conveyance claims, such

transfers were made for legitimate business reasons and fair consideration,

TCO was solvent and sufficiently capitalized at all relevant times and did not

act to hinder, delay or defraud its Creditors, that dividends were paid in

accordance with Delaware Corporation Law and that TCO had 





                                     IV-8
<PAGE>   174
sufficient earnings and/or surplus to pay such dividends to Columbia; 

               (ii) with respect to the preference claims, that TCO was

solvent at the time the payments were made; that the loans were obtained and

the payments were made in the ordinary course of TCO's business; that the

loans were repaid in accordance with their regular payment terms; and TCO's

payments of principal and interest on Columbia's unsecured debt were not

voidable preferences under section 547 of the Bankruptcy Code;

               (iii) with respect to claims for equitable subordination and

recharacterization of Columbia's debt as equity, when TCO encountered severe

business problems in 1985, Columbia could have either supported TCO or allowed

it to enter bankruptcy; the decision by Columbia to support TCO and avert its

bankruptcy immensely benefitted TCO and its Creditors (especially Producers

that received PPRPP and other contract renegotiation payments exceeding $1

billion and, over the next six years, more than $1.6 billion in above-market

payments for gas); supporting TCO with unsecured debt or equity was foreclosed

by Columbia's duties to its security holders and thus secured debt was the

only means of providing TCO with financial support; TCO was solvent and

adequately capitalized during the relevant period; all of TCO's dividends were

legally paid, reasonable and appropriate; through Columbia's support, TCO

continued to operate successfully until record warm weather arrived in early

1990; TCO paid all of its obligations as they 




                                     IV-9
<PAGE>   175
came due (including those owed to Producers and Columbia alike); TCO did not

prepay unsecured debt or in any way convert it to secured debt; Columbia's

conduct was neither inequitable nor injurious to TCO's other Creditors; and

any alleged advantage to Columbia over other Creditors in bankruptcy is

derived from its unique position--unlike other Creditors, Columbia provided

new financing to TCO and did so at a time when TCO's financial position was

precarious.  The allegation regarding recharacterization of debt as equity is

not a separate claim under the Bankruptcy Code and, in any event,

recharacterization would be improper because it benefitted Creditors when TCO

incurred the debt and Columbia received SEC approval to finance TCO on a

secured basis after public notice.  In addition, only initial

undercapitalization, which is not alleged in the Complaint, could support a

claim for recharacterization, and the Complaint also fails to adequately

allege facts that could support a finding of injury or unfair advantage as is

required under section 510(c) of the Bankruptcy Code.

          4.   PRE-TRIAL INTERCOMPANY CLAIMS LITIGATION
               PROCEEDINGS

     On April 13, 1992, the Bankruptcy Court entered a Scheduling Order with

respect to discovery and procedures relating to the Intercompany Claims. 

Hundreds of thousands of document pages were produced to the TCO Creditors'

Committee by TCO, Columbia and CNR, and depositions of two dozen former or

current employees of TCO and Columbia were taken.  In addition, 





                                     IV-10
<PAGE>   176
approximately a dozen expert witnesses were deposed by the parties.

     In May through June 1992, Columbia's Equityholders' and Creditors'

Committees of both intervened in the Intercompany Claims litigation as

defendant-intervenors and answered the complaint jointly, and TCO's Customers'

Committee intervened as a plaintiff-intervenor and filed a complaint

substantially similar to the TCO Creditors' Committee's complaint.

     On June 30, 1992, Columbia filed an Objection to the TCO Creditors'

Committee's Proof of Claim filed on behalf of TCO against Columbia (the

"Objection"), which was consolidated with the Complaint pursuant to a Consent

Order signed on July 31, 1992.

     In June 1992, Columbia and CNR filed a Motion for Partial Judgment on the

Pleadings and Partial Summary Judgment (the "Summary Judgment Motion") as to

the equitable subordination, recharacterization and certain other claims in

the Complaint.  The parties (including the intervening committees) briefed the

Summary Judgment Motion extensively, first in 1992 and then, based upon the

factual record developed during discovery, again in 1993.  The Summary

Judgment Motion was denied shortly before trial without opinion.

     On May 13, 1994, the Bankruptcy Court made a sua sponte motion to the

District Court for withdrawal of the jurisdictional reference of the

Intercompany Claims Litigation.  On May 25, 1994, the District Court granted

the Bankruptcy 





                                     IV-11
<PAGE>   177
Court's sua sponte motion and withdrew the jurisdictional reference of the

Intercompany Claims Litigation.

          5.   THE INTERCOMPANY CLAIMS TRIAL

     Trial before the Honorable Joseph H. Farnan commenced in the United

States District Court for the District of Delaware on September 12, 1994.  The

trial was completed on October 25, 1994.

     During the trial the TCO Creditors' Committee called three fact witnesses

(as adverse witnesses) and six expert witnesses and offered 677 exhibits in

support of TCO's claims against Columbia.  In their defense, Columbia and CNR

called four fact witnesses and seven expert witnesses and offered 184 exhibits

in opposition to the evidence presented by the TCO Creditors Committee.  Each

side designated portions of  depositions in support of their positions.  All

of the fact witnesses testifying at trial or by deposition were present of

former officers of Columbia or TCO.

     Following the trial, both sides submitted proposed findings of fact,

reply findings of fact, proposed conclusions of law, and post-trial argument. 

These post-trial written submissions were completed on December 20, 1994.  The

Court's decision is not expected before June 1, 1995.

          6.   SUMMARY OF THE TCO CREDITORS' COMMITTEE POSITION

     The TCO Creditors' Committee contends that it established at trial that

between 1985 and 1991 Columbia was carrying out a plan to use its control over

TCO to gain for itself an 




                                     IV-12
<PAGE>   178
inequitable advantage over TCO's general unsecured creditors.  The TCO

Creditors' Committee contends that the evidence showed (i) that Columbia

formulated this plan in late 1984 and early 1985 when TCO was experiencing

severe financial problems, including the possibility that it might soon be

forced into bankruptcy; (ii) that Columbia recognized that, as stockholder and

unsecured creditor of TCO, it had little chance of holding on to its

investment in TCO if TCO went into bankruptcy at that time; and (iii) that to

avoid the loss of its investment and gain a priority over TCO's other

creditors, Columbia devised and implemented a plan to forestall an immediate

TCO bankruptcy and maintain Columbia's control over TCO while Columbia removed

assets from TCO and repositioned itself as a secured creditor in TCO's

remaining assets, thereby shifting the risk of loss to TCO's other creditors

in case TCO failed.

     The TCO Creditors' Committee contends that the evidence further showed

that Columbia's plan included (i) the removal of TCO's valuable oil, gas and

coal properties for the benefit of Columbia through the transfer of those

assets to CNR in exchange for the return of shares of TCO's own stock which

had no value to TCO; and (ii) the removal of an additional $130 million from

TCO through the payment of dividends to Columbia when TCO was undercapitalized

and needed additional cash.  The Creditors Committee contends that the

evidence also showed that TCO borrowed additional secured debt from Columbia

to pay those dividends, and that Columbia's equity interest was thereby in 




                                     IV-13
<PAGE>   179
effect converted into secured debt having a priority over TCO's unsecured

creditors.

     In addition, the TCO Creditors' Committee contends that the evidence at

trial showed that Columbia made several changes in its practices with respect

to TCO's financial structure between 1985 and 1991 for the purpose of

improving Columbia's claim position in the event of a TCO bankruptcy,

including (i) leaving TCO severely undercapitalized from 1985 through 1991 so

as to minimize Columbia's equity investment at risk in TCO without reducing

its ownership and control; (ii) the institution of a new policy in 1985 of

meeting all of TCO's financing requirements from 1985 onwards exclusively with

secured debt from Columbia in an attempt to gain a secured claim on all of

TCO's remaining assets; and (iii) the conversion of over $300 million of

Columbia's pre-1985 unsecured loans to TCO into secured loans by having TCO

borrow new secured debt from Columbia to repay the prior unsecured debt,

thereby elevating Columbia's claim in bankruptcy over that of TCO's other

unsecured creditors.

     The TCO Creditors' Committee contends that the evidence showed that

Columbia's conduct was inequitable and, unless remedied by the Court, would

result in an unfair advantage for Columbia in the distribution of the TCO

estate and a corresponding injury to TCO's other creditors.

     The TCO Creditors' Committee contends that the evidence at trial also

showed that a number of these transactions could be 




                                     IV-14
<PAGE>   180
set aside as fraudulent conveyances or voidable preferences.  Thus, the

Creditors Committee contends that the evidence established (i) that the

transfer of TCO's oil, gas and coal properties to CNR was both an intentional

fraudulent conveyance and a constructive fraudulent conveyance under section

548 of the Bankruptcy Code and Delaware fraudulent conveyance law; (ii) that

the dividends paid to Columbia in the three years prior to TCO's bankruptcy

were fraudulent conveyances under Delaware law; (iii) that the new liens given

to Columbia in connection with the conversion of TCO's pre-1985 unsecured debt

to Columbia into secured debt in the three years prior to bankruptcy were

fraudulent conveyances under Delaware law; and (iv) that the liens acquired by

Columbia in connection with the conversion of TCO's pre-1985 unsecured debt to

Columbia into secured debt in the one year prior to bankruptcy and those liens

that Columbia failed to perfect on a timely basis prior to the preference

period were voidable preferences under section 547 of the Bankruptcy Code.

          7.   SUMMARY OF COLUMBIA'S ANALYSIS OF THE INTERCOMPANY CLAIMS

     Columbia believes that the TCO Creditors' Committee failed to show at

trial (i) that any transfers by TCO to Columbia were improper or inequitable

or that any such transfers (or liens) constituted fraudulent conveyances or

voidable preferences; (ii) that the secured financing of TCO by Columbia (or

any other conduct of Columbia) was improper or inequitable or that Columbia

obtained any unfair advantage thereby; (iii) that TCO 





                                     IV-15
<PAGE>   181
accelerated any payments to Columbia on unsecured debt or that any unsecured

debt was converted to secured debt; (iv) that the secured financing by

Columbia of TCO injured or unfairly disadvantaged any group of actual or

potential Creditors of TCO; or (v) that TCO was initially undercapitalized.

     Columbia also believes that the credible evidence at trial demonstrates

that the two-part plan developed by TCO and Columbia in response to TCO's

problems in 1985 was a reasonable and bona fide attempt to solve TCO's

problems permanently, which in large part succeeded until adverse regulatory

and market developments followed by unprecedented warm weather in 1990-91 led

to Tco's Chapter 11 filing.  The evidence presented at trial also shows that

(i) TCO's problems in 1985 and the attendant increase in its debt/equity ratio

were a result of adverse business developments unrelated to Columbia's

conduct; (ii) all financing of TCO was approved by the SEC, after public

notice and opportunity for objection; (iii) TCO repaid unsecured debt only as

it came due; (iv) TCO had sufficient net cash flow from operations to fund all

of its debt and dividend payments to Columbia; (v) TCO's payment of principal

and interest to Columbia was in the ordinary course of business and pursuant

to the terms of loans made in the ordinary course of business that had been

approved by the SEC; (vi) providing TCO with unsecured debt or equity would

have been inconsistent with Columbia's duties to its own creditors and

shareholders; and (vii) all of TCO's dividends were proper.





                                     IV-16
<PAGE>   182
     Most important, Columbia contends that the trial record demonstrates that

Columbia's continued funding of TCO greatly benefitted TCO's Creditors, since

it enabled TCO (i) to continue operating and fulfilling TCO's obligations to

outside Creditors (including the purchase of gas from Producers at prices

above spot market prices) and (ii) to substantially reduce potential Producer

Claims against the Estate by the payment of approximately $850 million over

two years to Producers under the PPRPP, the continued performance of the long-

term gas contracts from 1986 through mid-1991, and the expenditure of more

than $200 million for buyouts (and buydowns) of long-term contracts after

1986.

     Finally, Columbia believes that the credible evidence demonstrates that

the CNR Transfer was not a fraudulent conveyance because TCO was in fact

solvent and had sufficient capital available to it at the time of the transfer

(and immediately thereafter) and the transfer was not made with fraudulent

intent, but was made to further long-standing substantial and legitimate

business purposes that were shared and effectuated by many other pipelines,

including ensuring that unregulated properties were maintained in a separate

unregulated company where they could be managed and developed more efficiently

free from regulatory constraints.

          8.   SETTLEMENT OF THE INTERCOMPANY CLAIMS

     The outcome of the numerous legal and factual issues raised by the

Intercompany Claims Litigation is not without doubt, and 




                                     IV-17
<PAGE>   183
the potential recovery by the Creditors' Committee could, at least in theory,

reach the billion-dollar level.  In addition, any decision by the trial court

would likely be subject to costly and time-consuming appeals.  The appeals

could result in a reversal and a new trial that would only further delay

resolution of these Claims and the payment of TCO's Creditors.  The settlement

of these Claims allows TCO's Creditors an opportunity to receive substantial

cash payments upon the Effective Date and permits TCO and Columbia the

opportunity to emerge from bankruptcy proceedings without extended further

delay.

     C.   THE IRS CLAIMS AND SETTLEMENT

     On or about March 13, 1992, the Internal Revenue Service (the "IRS")

timely filed four duplicative proofs of claim against Columbia as well as

identical claims against TCO, each in the amount of $553,728,311.39 (the "IRS

Claims").  The IRS Claims asserted claims for income taxes, plus penalties and

interest, for the taxable years ending 1980, 1981, 1983, 1987, 1988 and 1990

and for excise taxes (Form 720) for the period ended June 30, 1991 and

protective claims for pension excise taxes.  The IRS Claims asserted that (i)

$11,667,918.33 constituted a secured claim by virtue of a set-off of refunds

due for the taxable years 1979, 1982 and 1989, (ii) $461,884,205.75

constituted an unsecured priority claim and (iii) $80,176,187.31 constituted a

general unsecured claim.





                                     IV-18
<PAGE>   184
     Columbia disputed both the amount and priority of the IRS Claims and

engaged in extensive negotiations, along with TCO, over the IRS Claims. 

Ultimately Columbia and its subsidiaries, including TCO, entered into a

settlement with respect to the IRS Claims (the "IRS Closing Agreement").

     The principal federal income tax issues raised by the IRS Claims

consisted of: (i) IRS objections to the treatment by TCO of approximately $850

million in payments made by TCO to Producers under the PPRPP and for other

similar payments to Producers from 1985 to 1987 in order to obtain price and

take-or-pay reductions and for other contract reformation costs under gas

purchase contracts which TCO had with such Producers; (ii) TCO's ability to

deduct in certain tax years expenses that had previously been included in the

valuation of its book and tax LIFO inventory layer; and (iii) as to TCO as

well as other members of the Columbia consolidated tax group (the "Columbia

Group"), questions relating to the deductibility of software development costs

incurred during the taxable years 1985 to 1990.  

     The IRS Closing Agreement was approved by the Joint Committee on Taxation

of the United States Congress on June 30, 1994 and was approved by an Order of

the Bankruptcy Court dated October 12, 1994.  The IRS settlement reduced the

IRS Claims for the Columbia Group as a whole from approximately $554 million

to $111,902,703.00 plus post-petition interest (of approximately $24.6 million

projected to December 31, 1995) to be calculated 





                                     IV-19
<PAGE>   185
pursuant to the IRS Closing Agreement, and the Bankruptcy Court's order

approving the settlement allowed the IRS Claims, as compromised pursuant to

the IRS Closing Agreement, to be priority claims under section 507(a)(8)

against both Columbia and TCO.  It is anticipated that future tax benefits

arising from deductions permitted the Columbia Group in 1991 through 1995

pursuant to the IRS Closing Agreement (the "turnarounds") will reduce the

effective cost of the settlement to approximately $68.2 million, including

post-petition interest through December 31, 1995.  

     The consolidated income tax regulations provide that each member of the

Columbia Group is severally liable for the entire consolidated tax liability

of the Group.  However, Columbia and TCO intend to allocate the tax savings

and costs from the IRS settlement in accordance with their Tax Allocation

Agreement (the "TAA"), which is to be assumed by both Columbia and TCO

pursuant to their respective Plans.  As a result, TCO, as the taxpayer

primarily responsible for generating the tax liabilities, will fund the

payment to the IRS, including post-petition interest, and receive its

allocable share of the turnarounds.  Net refunds allocable to Columbia and its

non-debtor subsidiaries which have been offset by the IRS against its Claim

will be paid by TCO to those entities as a cure cost under the TAA.  It is

estimated that, under the IRS settlement and in accordance with the TAA, TCO

will owe the IRS $134.6 million plus post-petition interest of approximately

$29.6 




                                     IV-20
<PAGE>   186
million, and that other members of the Columbia Group will be collectively

entitled to a refund of approximately $22.7 million plus post-petition

interest of approximately $5.0 million.  After taking into account various

turnarounds for the period 1991 through 1995, the net cost of the settlement

to TCO is approximately $76.8 million, including interest through December 31,

1995 and the net result to other members of the Columbia Group is a refund of

approximately $8.6 million, including interest through December 31, 1995.  

     At the time the Bankruptcy Court approved the IRS Closing Agreement, it

also approved an agreement among Columbia, TCO and TCO's Creditors' Committee

providing that in the event the Bankruptcy Court failed to approve the

allocation of post-petition interest to TCO pursuant to the TAA or otherwise,

Columbia and/or its non-debtor subsidiaries would be obligated to make that

payment to the IRS.     

     D.   STATUS AND TREATMENT OF SECURITIES 
          CLAIMS AND DERIVATIVE LITIGATION

          1. PROCEDURAL HISTORY OF THE ACTIONS 

          Commencing on or about June 20, 1991, following the announcement on

June 19, 1991, by the Columbia Board of Directors regarding the suspension of

the dividend, the likelihood of a substantial charge to second quarter

earnings and the possibility of a bankruptcy filing, sixteen complaints

purporting to be class actions were filed in the District Court against

Columbia, various of its current and former officers and directors, certain of

its underwriters (Morgan Stanley & Co., 




                                     IV-21
<PAGE>   187
Inc., Donaldson, Lufkin & Jenrette and The First Boston Corporation) and its

accountants, Arthur Andersen & Co ("Defendants").  A seventeenth complaint was

filed on January 28, 1992.  All of these actions were eventually consolidated

under the caption In re Columbia Gas Securities Litigation, Consol.

C.A. No. 91-357 (the "Securities Action").

          On or about June 21, 1991, three derivative shareholder suits were

filed in the Court of Chancery of the State of Delaware and consolidated under

the caption In Re Columbia Gas System, Inc. Derivative Litigation (the

"Derivative Actions").  The complaints in those actions name individual

members of the Board of Directors as defendants and Columbia as a nominal

defendant.  The complaints generally allege that the Board of Directors

breached their fiduciary duties to Columbia by failing to make required

disclosures, thereby causing Columbia to be subjected to Federal securities

law liabilities.

          As of the Petition Date, no class had been certified with respect to

the Securities Action.  The Securities Action was automatically stayed as to

Columbia pursuant to section 362 of the Bankruptcy Code.  That litigation was

also stayed by agreement as to all other defendants, which agreement was

repeatedly extended until October 31, 1994.  The Derivative Actions were

stayed pursuant to section 362 of the Bankruptcy Code.

          Pursuant to an Order of the Bankruptcy Court fixing a bar date for

filing proofs of claim against Columbia, 




                                     IV-22
<PAGE>   188
approximately 29 individual proofs of Claim were filed against Columbia based

upon allegations described in the complaints filed in the Securities Action. 

Three related proofs of claim on behalf of purported classes of shareholders

and debentureholder allegedly injured during the Claim Period were also filed

against Columbia.  In addition, various officers, directors, underwriters of

Columbia Common Stock and others filed claims against Columbia for

indemnification relating to the Securities Action.

          On or about October 31, 1994, counsel for class action plaintiffs in

the Securities Action filed with the District Court (i) a consolidated amended

class action complaint (the "Complaint"), which, because of the automatic

stay, did not include Columbia as a defendant, and (ii) a motion for class

certification.  In addition, counsel filed in the Bankruptcy Court (i) a

motion to withdraw the reference of all matters relating to the securities-

related proofs of claim previously filed in the Bankruptcy Court and (ii) a

motion for class certification.

          The Complaint alleges that from February 28, 1990, through June 18,

1991, Defendants disseminated materially false and misleading statements

regarding Columbia's financial condition and failed to disclose material facts

which rendered other statements misleading, thereby artificially inflating the

market price of Columbia's Common Stock and debt securities, causing

plaintiffs to purchase such securities at artificially 




                                     IV-23
<PAGE>   189
inflated prices.  The Complaint alleges violations of sections 11, 12(2), 15

and 18 of the Securities Act of 1933, 15 U.S.C. Section Section 77k, 77l and

77o; sections 10(b), 20(a) and Rule 10b-5 of the Securities Exchange Act of

1934, 15 U.S.C. Section Section 78j(b), 78n and 78t(a); and the Florida State

Securities Acts, as well as negligent misrepresentation, and common law fraud

and deceit.

          On November 1, 1994, Columbia filed a motion (the "Supplemental Bar

Date Motion") in the Bankruptcy Court seeking to establish supplemental bar

date procedures for individual claims against Columbia based upon the subject

matter of the Securities Action, so as to permit Columbia and the other

bankruptcy participants to assess the scope and potential magnitude of those

claims in connection with the preparation of a plan of reorganization.

          On November 15, 1994, the Securities Action, previously pending

before Judge Latchum of the District Court, was transferred to Judge Farnan of

that Court.  On November 30, 1994, Judge Farnan issued an order (the "Stay

Order") staying, pursuant to 11. U.S.C. Section Section 362 and 105, further

proceedings in the Securities Action until the entry of a final judgment on

the Intercompany Claims.

          By letter dated February 13, 1995, counsel for Columbia requested

that Judge Farnan modify the Stay Order to allow Columbia's Supplemental Bar

Date Motion to be heard so that Columbia could obtain the information

necessary regarding its potential liability in order to finalize its

reorganization 



                                     IV-24
<PAGE>   190
proposals.  Counsel for class action plaintiffs opposed that request by letter

dated February 17, 1995.

          On April 10, 1995, counsel for class action plaintiffs filed a

motion requesting that Judge Farnan lift the Stay Order.

          2.   SUMMARY OF SECURITIES ACTION  ALLEGATIONS.

          The Complaint generally alleges misrepresentations or omissions by

Defendants regarding the financial burden arising from the then existing,

above-market priced gas supply contracts of TCO's and the Company's general

financial condition and prospects.

          The Complaint alleges that Defendants failed adequately to disclose

the potential financial exposure arising from long term, high priced non-

market sensitive gas supply contracts entered into by TCO prior to 1982.  

          Following the Natural Gas Wellhead Decontrol Act of 1989, TCO

performed various studies that purported to analyze or estimate the costs that

would be associated with "buying out" or "buying down" various contracts to

market levels.  In estimating buy-down costs, those studies attempted to

calculate the present value of the expected payments under those contracts for

the purchase of gas in excess of the projected spot market prices, referred to

as "excess gas costs".  Those studies also reflected assumptions as to the

percentage of the "excess gas costs" so calculated that would be required as

payment to producers for the reformation of their contracts.





                                     IV-25
<PAGE>   191
          The Complaint (referenced herein by paragraph number) alleges that

Columbia should have disclosed that the results of an early buydown analysis

performed by low-level TCO personnel in April 1990:

     "arrived at a net present value ("NPV"), discounted at 10%, of the
     Company's excess gas cost exposure from the ten Southwest producers of
     $832 million (of which Coleve represented $334 million).  Assuming, inter
     alia, a $.20 on the dollar settlement value to renegotiated these
     contracts, the April 1990 Study arrived at a 20% of NPV discounted costs
     to the Company of $166 million to buy down the applicable contracts."

     (Paragraph 151).

          Similarly, the Complaint alleges that Columbia should have disclosed

that a further study performed in May of 1990 "arrived at a revised 'Total

Settlement Cost' of $186 million" (Paragraph 153) and concluded that: 

     "[I]n order for Columbia to be competitive, measures to reduce gas
     purchase cost must be taken to ensure WACOG recovery and resume the
     purchase of gas under market responsive contracts."

     (Paragraph 155).

          In fact, Columbia's May 15, 1990, Form 10-Q had reported that:

     "Recent factors, including increased gas available under some older high
     cost contracts coupled with the anticipated effects of deregulation and
     Columbia Transmission's decline in sales volumes, have made it evident
     that a few Southwest producer contracts not previously renegotiated may
     present future marketability problems if not renegotiated.  Columbia
     Transmission is in the process of investigating the feasibility of such
     reformations, the magnitude of costs which might be incurred and the
     long-term desirability of reformations."






                                     IV-26
<PAGE>   192
The Complaint attacks that disclosure on the grounds that allegedly::

     "GAAP required the Company not only to reserve the $500 million plus
     discussed above, it further required Columbia Gas to disclose the high
     end of any material loss contingency (i.e. $1.165 billion from the May
     1990 Study) as well as all assumptions underlying the findings of the
     Study.  Columbia Gas not only failed to disclose the $1.165 billion
     figure, it also did not disclose the assumptions underlying the May 1990
     Study, which the Individual Defendants knew or recklessly disregarded at
     the time were based upon, inter alia, materially inflated and
     insupportable sales and spot gas price projections."

     (Paragraph 173). 

          The Complaint also identifies a draft study prepared by TCO dated

October 25, 1990, and alleges that Defendants failed to disclose the risks

that study revealed.  (See  Paragraph Paragraph 194-206, Paragraph Paragraph 

225-242).

          The Complaint further alleges that defendants should have disclosed

details of an April 1991 Study, which allegedly "determined a gross excess gas

cost exposure of $1.1 billion, discounted 10% to an NPV of $800 million,

compared to gross exposure of $858.9 and 10% NPV exposure of $617.9 million in

the October Study, with the increase attributed to lower spot prices and

greater contract deliverabilities" (Paragraph Paragraph 313), as well as the 

conclusions of subsequent studies and revisions completed on May 13, May 28, 

June 11 and June 14, 1991.  (Paragraph Paragraph 321-323, 331-333).

          The Complaint repeats throughout the allegation that TCO was

"unreasonably optimistic" with regard to its gas cost studies and other

internal studies and projections.  Many other 




                                     IV-27
<PAGE>   193
allegations contend that statements made by Defendants casting Columbia's

financial condition in a positive light, understated or misrepresented the

Company's alleged serious financial problems.

          For example, the Complaint alleges that with regard to Gas Inventory

Charge (GIC) payments TCO was eligible to recover pursuant to the 1989 Global

Settlement with its customers, statements in Columbia's May 15, 1991, 10-Q

were misleading for reporting that the GIC test "may not" be met when the

Company allegedly knew that it could not be met:

     "The statement that Columbia Gas 'may not be able to meet the test of
     price comparability with other pipelines' in order to be eligible to
     collect its GIC was false and misleading when made.  Internal Company
     communications . . . demonstrate that the Individual Defendants knew or
     recklessly disregarded at least as early as June, 1990 and were again
     advised in December, 1990, that the Company would not meet its
     eligibility criteria to qualify to collect the GIC in 1991."

     (Paragraph 327).

          Similarly, the Complaint alleges that the declaration of an

increased dividend in January 1991 was misleading:

     "On January 16, 1991 the Company announced in a PR Newswire release (the
     'January 1991 Release') that its board of directors had authorized an
     increase in its quarterly dividend from $.55 to $.58.  Consistent with
     the Company's previous false and misleading material statements about its
     positive business and financial prospects, the January 1991 Release
     trumpeted the fact that this was the second consecutive year of dividend
     rate increases, raising the annual dividend from $2.20 in 1990 to $2.32
     in 1991, and continuing an unbroken stream of dividend payments going
     back 43 years."

     (Paragraph 258).





                                     IV-28
<PAGE>   194
          Likewise, the Complaint alleges that Chairman John Croom made false

and misleading statements in a February 6, 1991, press release when he

reported that:

     "Although the weather has severely impacted earnings in the short-term
     and interrupted the earnings rebound begun in 1989, the Corporation has
     not changed its long range positive outlook or its goals and objectives."

     (Paragraph 266). 

          In addition, the Complaint contends that Defendants violated GAAP,

SFAS and FIN rules through the alleged improper amortization of certain

accounts and the alleged failure to recognize and disclose certain risks. 

(See Paragraph Paragraph 170-174, 215-223). 

          Finally, the Complaint alleges that Defendants improperly did not

disclose that on May 15, 1991, Columbia CFO Oswald allegedly told the Board of

Directors that:

     "The severity of the situation has not been disclosed pending the
     completion of our analysis and plans for correction.  Until additional
     disclosures are made, going to the public capital markets is difficult if
     not impossible. . . .  We will face the strong likelihood of a credit
     downgrading, the degree of which will be dependent on the credibility of
     our proposed solutions."

     (Paragraph  324). 

          However, Columbia did announce on May 15, 1991, that: 

     "Columbia Transmission has concluded that actions beyond the previously

     announced renegotiations of certain producer contracts are necessary. 

     The parameters of the problem and the costs and feasibility of various

     possible responses, including seeking regulatory changes in the merchant

     function, are under intense study in light of current and 






                                     IV-29
<PAGE>   195
     prospective market conditions and the impact of final deregulation," and

     continued that their problems "may limit the Corporation's ability to

     access the financial markets".

          3.   SUMMARY OF RELEVANT PUBLIC DISCLOSURES BY DEFENDANTS 

          In Columbia's Form 10-K and Annual Report for the fiscal year ending

December 31, 1989, filed March 16, 1990, Columbia reported that "[i]n the

future, essentially all of Transmission's gas supply will come from

producers", and that "Transmission is continually assessing its gas supply

contracts in an effort to provide the necessary flexibility to meet the

changing marketplace."  

          On May 15, 1990, Columbia filed its Form 10-Q for the first quarter

of 1990, reporting that Columbia had had disappointing earnings of

$47.6 million due to warm weather, and also stated:

     "Columbia Transmission continually assesses whether its gas supply
     contracts are responsive to market conditions.  Recent factors, including
     increased gas available under some older high cost contracts coupled with
     the anticipated effects of deregulation and Columbia Transmission's
     decline in sales volumes, have made it evident that a few Southwest
     producer contracts not previously renegotiated may present future
     marketability problems if not renegotiated.  Columbia Transmission is in
     the process of investigating the feasibility of such reformations, the
     magnitude of the costs which might be incurred and the long-term
     desirability of reformations."

          Filed on August 14, 1990, the Second Quarter Form 10-Q reported

lackluster performance due to lower seasonal demands and warm weather.  It

also repeated the First Quarter Form 10-Q's statement that TCO was continually

assessing the 




                                     IV-30
<PAGE>   196
feasibility and desirability of reforming those older, high-cost producer

contracts that may present future marketability problems.

          On September 28, 1990, in a press release announcing its settlement

for $32 million of its long term gas supply contract with Coleve, Columbia

stated that it had concluded it was "desirable" to "seek contract

reformations" and that "whether the effort will be successful cannot be

ascertained at this time".

          On November 7, 1990, Columbia issued a press release stating that

"Columbia Transmission is continually assessing whether its gas supply

contracts are responsive to the market and is attempting to renegotiate

certain Southwest producer contracts and, in some cases, to resolve related

litigation."  The release noted that the $32 million settlement announced on

September 28, 1990, had involved "one such contract."  The release

acknowledged that the cost of resolving TCO's other negotiations could be as

high as $180 million and that this would exceed reserves by up to

$150 million.  The release stated that TCO did not expect the cost to exceed

that amount.

          On November 13, 1990, Columbia filed its Third Quarter Form 10-Q,

which stated that:

     "[e]arlier this year, the Company announced that recent factors,
     including increased gas available under some older high-cost contracts,
     the anticipated effects of gas deregulation legislation passed in 1989
     which will remove all remaining controls on pricing and Columbia
     Transmission's dramatic decline in sales volumes in the late 1980s
     (primarily due to large customers switching from sales to transportation
     service), made it evident that 




                                     IV-31
<PAGE>   197
     several of the Southwest [producer] contracts . . . will present future
     marketability problems if not renegotiated. . . .

     "The cost of these renegotiations, if incurred, is not expected by
     the Company to exceed current reserves of approximately $30 million
     by more than $150 million. Although most of the costs are not
     expected to be recovered in rates, approximately $22 million is
     expected to be recovered in the fourth quarter of 1990 from revenues
     earned under Columbia Transmission's gas inventory charge. . . . 
     The incurrence of these costs in the estimated amounts should not
     have a material adverse effect on the consolidated financial
     position of the Company.  However, due to the uncertainties inherent
     in the situation, it is impossible to predict the ultimate outcome
     or the timing of the renegotiation efforts."

          Columbia repeated the disclosures of its Third Quarter 10-Q in a

Registration Statement and Prospectus for the sale of common stock it filed on

December 6, 1990.

          On February 6, 1991, a Form 8-K filed by Columbia noted that "[t]he

transmission segment's storage inventory is currently 90 billion cubic feet

over planned levels, more than at any time in the company's history, reducing

its ability to purchase gas under its producer contracts" and that, "[b]ecause

of continued warm weather, a decline in spot market prices and availability of

pipeline transportation capacity, TCO has reduced its estimated sales level

for the contract year 1991 to about 150 Bcf, which is some 100 Bcf below

original estimate."  Furthermore, the press release warned that "the lingering

effects of 1990's warm weather coupled with continued warm weather thus far in

1991 have reduced Columbia's earnings outlook for 1991" and that "spot market

prices for gas are significantly below earlier projections".  In addition, the




                                     IV-32
<PAGE>   198
Form 10-Q stated that "recoupable TOP obligation of up to $100 million may be

incurred in 1991", and that "spot market prices for gas are significantly

below earlier projections which will reduce revenues of Columbia oil and gas

operations."

          On March 13, 1991, Columbia filed its 1990 Form 10-K and Annual

Report.  In his message to shareholders, Croom reported that the record warm

temperatures of 1990 that were continuing in 1991 "have substantially reduced

gas demand, held wellhead prices at depressed levels by extending the

nationwide supply surplus and created numerous operating problems."  "As a

result", Croom continued, "1990 earnings are disappointing and well below

anticipated levels."  Croom stated that the warm weather, "along with wellhead

price and production levels in the oil and gas segment, decisions in pending

Transmission and Distribution rate cases and negotiations with producers to

restructure gas purchase contracts to make them market sensitive will affect

earnings in 1991."  Croom further stated the weather had "significantly

reduced sales volumes and, in turn, purchases from producers.  Management

currently expects that recoupable take-or-pay obligation of up to $100 million

may be incurred in 1991."  The Report noted that while "$22 million of . . .

costs were recovered under the 'GIC' in 1990", "[m]anagement cannot estimate

to what extent, if any, the remaining costs will be recovered in rates."

          On April 17, 1991, Columbia held its annual shareholders meeting and

filed an accompanying Form 8-K.  At 




                                     IV-33
<PAGE>   199
that meeting, Croom repeated that "[t]he depressed gas prices and the

continuing impact of the warm weather on transmission operation make it

unlikely that 1991's earnings will be as high as 1990's earnings", which

themselves had been disappointing.  At the same shareholders meeting, Columbia

CFO Oswald said that because of the warm weather, TCO's results would continue

to be affected for the next year or more.

          In that Form 8-K, Croom also warned that "low gas prices and

increased availability of transportation capacity provided the transmission

segment's customers ready access to cheaper gas supplies and greatly reduced

its sales volumes.  These conditions demonstrated the inherent risks of a

closely-regulated merchant function and have caused us to re-evaluate the

advisability of maintaining Transmission's sales service in its current form." 

In addition, he stated that "contractual obligations with some producers will

require prepayments which will increase borrowing costs."

          On April 19, 1991, Prudential Securities reported that Columbia

management had met with securities analysts in New York the previous day to

"explain the substantial and surprising deterioration that has taken place in

the company's intermediate-term earnings prospects as a result of the record

warm weather that has plagued this very weather-sensitive company."  According

to Prudential Securities, Columbia's management stated that "if spot prices

did not recover, actions 




                                     IV-34
<PAGE>   200
in addition to the partial buydown program announced in late 1990 would

probably be required."

          On May 1, 1991, Columbia announced first quarter earnings of

$49.8 million.  The release quoted Croom as saying that the past 15 months'

warm weather was "likely to depress transmission's financial performance for

the next year or more."  Croom further warned:

     "[T]ransmission ended the heating season with a significant excess of
     natural gas in storage which will increase carrying costs, Croom said. 
     To bring gas supplies into balance with anticipated demand, transmission
     has been negotiating temporary but costly settlements with producers and
     customers to implement new supply and storage agreements.  In spite of
     these efforts, Croom said that transmission still expects to incur take-
     or-pay liabilities during 1991.

     "Croom said that if spot market gas prices remain depressed for an
     extended period of time, regulatory and other actions, in addition
     to the renegotiations of producer contracts . . . will be required
     to reduce transmission's merchant gas prices to marketable levels.

     "Absent increased sales, high gas supply management costs will
     continue to be incurred.  If gas prices continue at low levels, as
     we are currently projecting, meaningful changes in the merchant
     function are critical to the successful future financial performance
     of Columbia's transmission segment."

          On May 15, 1991, Columbia filed its First Quarter 1991 Form 10-Q,

for the quarter ending March 31, 1991.  The filing stated:

     "In the third quarter of 1990, Columbia Transmission announced that it
     would attempt to renegotiate certain high-cost gas supply contracts. 
     Using recently revised gas price projections, Columbia Transmission's
     cost of gas is now projected to be higher than generally anticipated gas
     price levels, even assuming the successful completion of the announced
     renegotiations.  Consequently, gas sales are 



                                     IV-35
<PAGE>   201
     projected to be insufficient to avoid future gas supply management costs. 
     In addition, Columbia Transmission may not be able to meet the tests of
     price comparability with other pipelines which is required to permit it
     to collect its gas inventory charge to reimburse it for gas supply
     management costs.  Therefore, Columbia Transmission has concluded that
     actions beyond the previously announced renegotiations of certain
     producer contracts are necessary.  The parameters of the problem and the
     costs and feasibility of various possible responses, including seeking
     regulatory changes in the merchant function, are under intense study in
     light of current and prospective market conditions and the impact of
     final deregulation."

          The First Quarter 1991 Form 10-Q estimated that "actions to minimize

supply management costs" and "higher carrying costs due to the excess storage

position" would cost TCO $30 million in the summer of 1991.  "Despite these

efforts," the Form 10-Q continued, "Columbia Transmission may incur

approximately $65 million of recoupable take-or-pay liabilities in 1991."  To

manage its 1991 cash requirements, Columbia would seek "additional sales of

commercial paper and borrowings under its bank credit facilities, issuance of

senior debt, reductions in capital expenditures, proceeds from the potential

sale of its Canadian properties . . ., and other potential sources of cash or

reductions in spending."  The Form 10-Q reported that "matters discussed

herein including those discussed under 'Supply Matters' . . . may limit the

Corporation's ability to access the financial markets."

          4.   TRENDS IN COLUMBIA'S STOCK PRICE

          From early 1990 through May 1991, despite Columbia's numerous

disclosures of specific information regarding the subjects of the Complaint's

allegations, Columbia's common stock 





                                     IV-36
<PAGE>   202
experienced relatively small daily price fluctuations.  The movement in

Columbia's share prices followed the market generally and pipeline industry

trends.  Columbia shares traded in the mid-40 per share range from March

through August 1990.  The price rose to the low-50's in September 1990 and

reached the mid-50's in early November.  The price returned to the mid-40's in

December 1990, where it stayed until mid-April 1991.  Thereafter, the price

dropped to the high-30s then stayed in the high-30's and low 40's until mid-

June 1991.  When the disclosures occurred in May that the previously announced

TCO contract buy down program might be insufficient, that TCO's merchant

function may have to be reassessed and that intense studies were underway to

consider TCO's problems and possible solutions, Columbia's stock price barely

changed.

          5.   THE JUNE 19, 1991, ANNOUNCEMENT

          On June 19, 1991, Columbia issued a press release, which stated,

inter alia, that the board had voted to suspend the dividend on its common

stock.  The release explained that:

     "The present value of losses associated with the pipeline subsidiary's
     above-market priced gas contracts could exceed $1 billion.  It is
     anticipated that a substantial portion of these losses will be charged to
     income in the second quarter.

     "Columbia System Chairman John H. Croom said corporate officers are
     meeting with bank lenders today seeking to reestablish the System's
     credit facilities on revised terms in view of the pipeline subsidiaries
     financial difficulties.  In addition, Columbia Transmission is launching
     a comprehensive effort to renegotiate all of its above-market gas
     purchase contracts.  The program contemplates offering producers up to
     $600 million of Columbia Transmission obligations to fairly compensate
     them for restructuring their contracts. . . .




                                     IV-37
<PAGE>   203
     "'[T]oday's action is a result of the Board's determination that in view
     of recent developments, including management's conclusions during the
     course of its studies regarding likely spot market prices over the next
     several years, it is no longer in the best interests of the System to
     have Columbia Transmission attempt to deal with the producers on any
     basis which does not clearly provide a permanent resolution of all the
     high-cost contract problems,' Croom said." . . .

     "Croom cautioned that the Columbia System's failure to reestablish
     and continuously maintain adequate lines of credit with its banks or
     the failure of producers to respond promptly and favorably to
     Columbia Transmission's efforts to restructure its contracts could
     force the System, the pipeline subsidiary, or both to seek
     protection from creditors under the bankruptcy laws."

          This announcement contained significant new information reflecting

recent developments.  In particular, the announcement disclosed (i) the

decision of the Columbia Board of Directors that Columbia would no longer

support TCO absent a comprehensive solution to the producer contract problem;

(ii) the adoption of a plan to attempt to renegotiate all of those contracts

at one time at an expected cost of $600 million; (iii) the expectation of a

substantial charge to earnings; and (iv) the existence of a liquidity problem

giving rise to the possibility of a bankruptcy filing.  Columbia's share price

fell $14 on June 19, 1991.

          6.   PROPOSED SETTLEMENT

          Columbia disputes the assertion that there is any liability of the

Company or other Defendants on the Securities Actions.  Columbia believes that

its public disclosures adequately and accurately described the information

that could and should have been made available to the market.  In fact,





                                     IV-38
<PAGE>   204
Columbia contends that several of the particular purported disclosures and

accounting charges that the Complaint asserts should have been made would, if

made, have been improper, false and highly misleading.  In particular,

Columbia believes that the Complaint improperly characterizes the calculations

of "excess gas costs" in buy-down studies prepared in connection with

anticipated contract renegotiations and erroneously labels the results as

"loss contingencies."

          Moreover, Columbia disputes the allegations that any identifiable

drop in the prices of its securities occurred during the class period as a

result of the disclosure of information that should or even could have been

disclosed earlier.  In fact, the relative stability of the Columbia share

price through the series of announcements of the business problems

demonstrates the extent of the market's knowledge and understanding of

Columbia's business prospects.  

          As described in Section III, Columbia and TCO are regulated entities

about which extensive information is publicly available.  They are engaged in

businesses that are subject to regular scrutiny and reporting by sophisticated

and specialized securities analysts.  The significant drop in price on

June 19, 1991, reflected the market's reaction to the new information that

could not have been previously disclosed--primarily the Board's determination

that TCO's contracts must all be renegotiated and the prospect of a bankruptcy

filing.




                                     IV-39
<PAGE>   205

          Nevertheless, in order to resolve outstanding disputes and expedite

the reorganization of the Debtor, Columbia's Plan incorporates an Offer of

Settlement to persons that purchased securities of Columbia after March 1,

1990, held such securities after March 31, 1991, and either held them through

June 19, 1991, or sold them at a loss on or before June 18, 1991.  The

settlement proposal by Columbia and various non-debtors, offers an aggregate

amount up to $18 million, subject to certain adjustments, to resolve all

Securities Action Claims of Qualifying Class 4 Claimants against Columbia and

the contributing participants.

          The amount each Qualifying Class 4 Claimant will be offered will

depend upon the type of security purchased, the dates of purchase and sale and

the total number of Claimants who accept the Offer of Settlement.  The

distribution amounts being offered to Claimants satisfying the requirements

for participation, described below, are as follows:

     (1)  Claimants that purchased shares of Columbia Common Stock on or after

          October 1, 1990, but not later than May 14, 1991, and held such

          shares continuously until June 19, 1991, will receive at least $1.50

          but not more than $3.00 per share so purchased.  Claimants that

          purchased shares of Columbia Common Stock on or after March 1, 1990,

          but not later than September 30, 1990, or on or after May 15, 1991,

          but not later than June 18, 1991, and held such shares continuously

          until 





                                     IV-40
<PAGE>   206
          June 19, 1991, will receive at least $.50 but not more than $1.00

          per share so purchased.  

     (2)  Claimants that purchased Columbia debt securities on or after

          October 1, 1990, but not later than May 14, 1991, and held such debt

          securities continuously until June 19, 1991, will receive at least

          $1.50 but not more than $3.00 for each $100 principal amount of debt

          so purchased.  Claimants that purchased Columbia debt securities on

          or after March 1, 1990, but not later than September 30, 1990, or on

          or after May 15, 1991, but not later than June 18, 1991, and held

          such debt securities continuously until June 19, 1991, will receive

          not less than $.50 nor more than $1.00 for each $100 principal

          amount of debt so purchased.  

     (3)  Claimants that purchased shares of Columbia Common Stock on or after

          March 1, 1990, and sold such shares on or after March 31, 1991, but

          before June 19, 1991, will receive at least $.10 but not more than

          $.20 per share purchased.

     (4)  Claimants that purchased Columbia debt securities on or after

          March 1, 1990, and sold such debt securities on or after March 31,

          1991, but before June 19, 1991, will receive at least $.10 but not

          more than $.20 per $100 principal amount of debt so purchased.

          Because there is controversy as to how many Claimants purchased

securities and held or sold such securities during the 



                                     IV-41
<PAGE>   207
relevant periods, it is difficult to estimate the total amount of damages that

would arise if liability were to be established.  Thus, Columbia will seek an

order establishing a Supplemental Bar Date by which adequate information must

be supplied by any person asserting a Securities Action Claims against

Columbia or any party that has asserted a timely claim for indemnification

against Columbia with respect to Securities Action Claims.  All claimants that

file satisfactory proofs of claim by the Supplemental Bar Date and accept the

Offer of Settlement will be eligible to be Class 4 Claimants.

          Claimants that file timely and satisfactory proofs of Claim but

decline the Offer of Settlement will become Class 7 Claimants.



          After the reception and processing of all proofs of Claim, Columbia

will determine the total amount of Class 4 Claims assuming that each claimant

will received the maximum settlement amount ("Maximum Proof of Claim Amount"). 

If the Maximum Proof of Claim Amount is $18 million or less, each Claimant

shall receive the maximum settlement amount offered to such Claimant.  If the

Maximum Proof of Claim Amount exceeds $18 million but does not exceed

$36 million, then each Claimant shall receive an amount equal to the maximum

settlement amount offered to such Claimant multiplied by a fraction, the

numerator of which is $18 million and the denominator of which is the Maximum

Proof of Claim Amount.





                                     IV-42
<PAGE>   208
          If the Maximum Proof of Claim Amount exceeds $36 million, then

Columbia may, at its option, either:

     (1)  increase the total amount of settlement to the amount which is one-

          half of the Maximum Proof of Claim Amount, in which case each

          Claimant shall receive the minimum settlement amount, provided,

          however, that Columbia may elect to pay each Claimant pro-rata that

          portion of the total amount of settlement that exceeds $18 million

          in the form of shares of Columbia Common Stock or other debt or

          equity securities of Columbia having a value on the Effective Date

          equal to such excess; or

     (2)  to withdraw the Offer of Settlement in which case all Class 4 Claims

          shall be reclassified as Class 7 Claims.

          Defendants' Offer of Settlement is conditioned upon acceptance by

offerees accounting for at least 75% of the Maximum Proof of Claim Amount. 

Columbia may waive this condition.

          Upon and as a condition of distribution, all Class 4 Claimants will

provide a full release of all Claims against the Contributors as a condition

of receipt of the distribution.

          Reorganized Columbia will assume all Claims of Class 7 Claimants. 

Reorganized Columbia will also assume any timely filed, proper indemnification

Claims of other defendants.  






                                     IV-43
<PAGE>   209
          Pursuant to section 1141(d) of the Bankruptcy Code, potential claims

for which proper, timely proofs of Claim are not filed will be discharged as

to Columbia and an order will be entered enjoining any person failing to have

filed a timely proof of claim from asserting a Securities Action Claim against

any officer or director of Columbia or any other party that had asserted a

Claim for indemnification against Columbia with respect to Securities Action

Claims.

          7.   DERIVATIVE CLAIMS

          The claims alleged in the Derivative Actions are property of the

Estate under section 541 of the Bankruptcy Code.  The Equity Committee has

commenced an investigation to assess the value of the contingent asset

represented by those claims.  On March 15, 1995, the Columbia Board of

Directors formed a Special Litigation Committee of the Board to determine

whether the continuous prosecution of the Derivative Actions is in the best

interests of Columbia.  Once the Special Litigation Committee has completed

its review and submitted its determination to the board, which determination

shall be binding on the board, the Plan shall be amended to describe such

determination and provide for the treatment of the purported derivative claims

arising from such Derivative Actions.

     E.   THE COLUMBIA OMNIBUS SETTLEMENT

          As described in Section I, in order to facilitate the emergence of

both Columbia and TCO from Chapter 11, Columbia is proposing the Columbia

Omnibus Settlement, under which Columbia 



                                     IV-44
<PAGE>   210
will, inter alia, assist TCO to monetize the TCO Plan in order to provide

distributions, substantially in the form of cash, to TCO Creditors under the

TCO Plan, in consideration for, among other things, a settlement of the

Intercompany Claims and settlement of litigation over Producer Claims.

     Specifically, the Columbia Omnibus Settlement allows Columbia to retain

ownership of TCO and will end litigation over the Intercompany Claims, but as

consideration therefor provides that: (a) Columbia will assist TCO in

monetizing the TCO Plan which is estimated to provide for value to be

distributed to TCO's Creditors of approximately $3.9 billion (in the event of

100% acceptance of the TCO Plan), which distribution, in the case of third

party creditors will be substantially in cash; (b) Columbia will not receive

any cash distribution with respect to its Secured Claim against TCO but,

instead, will receive new secured debt securities of reorganized TCO for a

portion of such Claim and contribute the balance of such Claim to reorganized

TCO's equity; (c) Columbia will agree to the assumption by reorganized TCO of

certain pre-petition environmental claims of governmental agencies and certain

other claims; (d) Columbia will guarantee distributions to be made to TCO's

Creditors as provided under the TCO Plan (excluding assumed obligations); and

(e) Columbia will provide a guaranty of the Customer Settlement Proposal.

     Pursuant to a letter agreement with certain Customers and state agencies

(the "Parties"), Columbia agreed to guarantee 






                                     IV-45
<PAGE>   211
(subject to any necessary Bankruptcy Court or regulatory approvals) the

payment of distributions to accepting Customers and to guarantee the financial

integrity of the Customer Settlement Proposal.  Specifically, Columbia has

agreed that (i) the Customer Settlement Proposal will not be "retraded" with

the Customers so as to reduce the financial benefits of the Customer

Settlement Proposal to the Proposal, (ii) the financial benefits of the

Customer Settlement Proposal will not be adversely affected by virtue of any

subsequent settlement reached with other parties in either TCO's or Columbia's

bankruptcy proceedings and (iii) Columbia and TCO will include the Customer

Settlement Proposal and Columbia's guarantee thereof in their respective

Plans.  However, the foregoing guarantee does not to apply to any modification

imposed on the Customer Settlement Proposal or on a Plan incorporating the

Settlement by the action of any judicial or regulatory authority.  Finally,

the foregoing agreement terminates if (i) Plans of Reorganization

incorporating the Customer Settlement Proposal and Columbia's guarantee

thereof are not confirmed and FERC approval of the Customer Settlement is not

received by June 30, 1996 (provided that if TCO and Columbia do not each file

a Plan of Reorganization by April 1, 1995, then the date for confirmation of

such Plans and FERC approval will be extended in one-month increments for each

month that the filing of a Plan by TCO or Columbia is delayed after April 1,

1995); or (ii) the Parties as a class of Claims do not support the Plans of

Reorganization 



                                     IV-46
<PAGE>   212
filed by TCO and Columbia incorporating the Customer Settlement Proposal and

Columbia's guarantee thereof.

     The Omnibus Settlement provides substantial benefits to Columbia in

addition to the retention of ownership of TCO, including, the resolution of

contentious disputes with TCO's Producers and Customers affecting the economic

value of the TCO Estate on terms which Columbia believes are fair and

reasonable, the facilitation of the emergence of Columbia and TCO from

bankruptcy and a substantial tax benefit to the System through deductions of

payments to Producers and Customers on Columbia's consolidated federal income

tax return.  Columbia believes that the Omnibus Settlement is in the best

interests of both Columbia's and TCO's estates and that it will permit them to

emerge from their respective Chapter 11 proceedings and turn their full

attention and resources to the management of their ongoing businesses.

     F.   OTHER CLAIMS

     The remaining pre-petition claims against Columbia include unsecured

claims for uncashed dividend checks, proxy fees, board of directors' fees,

expenses and pension or other retirement benefit payments, intercompany

payables and other trade payables.  Pursuant to the Columbia Plan, all of

these unsecured claims will be paid in full by Columbia on the Effective Date.




                                     IV-47

<PAGE>   213

V.   DESCRIPTION OF THE COLUMBIA CHAPTER 11 PROCEEDINGS  

     A.   COMMENCEMENT OF THE CASE

     On July 31, 1991 (the "Petition Date"), Columbia filed a voluntary petition

under Chapter 11 of the Bankruptcy Code.  Since the Petition Date, Columbia's

Reorganization Case has been pending before the Bankruptcy Court.  Columbia has

continued to manage its properties and operate its businesses as a debtor-in-

possession pursuant to sections 1107 and 1108 of the Bankruptcy Code since the

Petition Date.

          1.   FIRST DAY ORDERS

     On or about the Petition Date, the Bankruptcy Court issued numerous "first

day orders" which facilitated the ongoing normal operations of Columbia.  These

orders covered various issues including, inter alia, authorization for joint

administration of Columbia's and TCO's bankruptcy proceedings; authorization to

invest excess cash in accordance with court-approved investment guidelines; and

approval of debtor-in-possession financing on an interim basis pending a final

hearing.  

     In addition, on August 2, 1991, the Bankruptcy Court entered an Order

authorizing Columbia to continue financing its non-debtor subsidiaries by

transferring cash to such subsidiaries in accordance with Columbia's pre-

petition practice and in accordance with orders of the SEC previously issued

under the HCA.













                                      V-1
<PAGE>   214
          2.   COLUMBIA'S RETENTION OF PROFESSIONALS

     On the Petition Date, the Bankruptcy Court issued an order approving

Columbia's retention of Cravath, Swaine & Moore, as special corporate counsel,

Stroock & Stroock & Lavan, as bankruptcy counsel, Young, Conaway, Stargatt &

Taylor, as local bankruptcy counsel, and Arthur Andersen & Co., as accountants. 

The Bankruptcy Court approved Columbia's  retention of Salomon as financial

advisor on October 22, 1991.

     In addition to the above professionals, Columbia subsequently received

authorization to retain various other professionals, consultants, experts and

non-bankruptcy counsel to provide advice to Columbia with regard to various

matters.

     B.   DEBTOR IN POSSESSION FINANCING

     Following its Chapter 11 filing, Columbia received approval from the

Bankruptcy Court and the SEC for debtor-in-possession financing (the "DIP

Facility").  The initial DIP Facility, secured by subsidiaries' common stock

owned by Columbia, permitted Columbia to borrow up to $275 million from a

syndicate of banks led by Manufacturers Hanover Trust Company (later succeeded

by Chemical Bank).  The DIP Facility was designed to supplement the use of

internally generated funds for general corporate purposes and to provide

financing for Columbia subsidiaries not involved in the bankruptcy proceedings.

     Columbia has reduced the borrowing capacity under the DIP Facility since

1991 as internally generated funds, including cash surpluses, have been

sufficient to meet current and 




















                                       V-2
<PAGE>   215
projected financial needs, thereby reducing its need for borrowed funds. 

Accordingly, the DIP Facility's borrowing capacity was reduced from its initial

$275 million to $200 million in 1992, to $100 million in 1993 and to $25 million

in 1994, resulting in reduced fees and other costs for Columbia.  

     By order dated August 16, 1994, the Bankruptcy Court approved an Amended

and Restated Credit Agreement between Columbia and Chemical Bank which, among

other things, (i) reduced the total commitment available under that facility to

$25 million, and made such commitment available only for the issuance of letters

of credit and (ii) provided for certain related fees.  The Bankruptcy Court also

approved a related Amended and Restated Security Agreement which provides

Chemical Bank with a first priority lien on cash collateral pledged by Columbia

thereunder in an amount equal to one hundred five percent of the aggregate face

amount of all outstanding letters of credit under the Amended and Restated

Credit Agreement.  Letters of credit with an aggregate stated amount of $13

million are currently outstanding, and will be replaced in accordance with the

terms of the Columbia Plan, as of the Effective Date.  

     C.   FORMATION OF COMMITTEES / RETENTION OF PROFESSIONALS

     On August 12, 1991, the United States Trustee (the "U.S. Trustee")

appointed the Columbia Creditors' Committee.  In addition, the U.S Trustee

appointed the Columbia Equityholders' Committee on October 18, 1991.


























                                       V-3
<PAGE>   216
     The following are the members of, and professional advisors to, each

Columbia Committee:

          1.   Columbia's Official Unsecured Creditors' Committee:

          Members:

               Teachers Insurance & Annuity Association
               Marine Midland Bank
               Metropolitan Life Insurance Co.
               Merrill, Lynch, Pierce, Fenner & Smith
               Morgan Guaranty Trust Company of New York
               Bankers Trust Company
               Provident Life & Accident Insurance Company

          Counsel: 

               Milbank, Tweed, Hadley and McCloy
               1 Chase Manhattan Plaza
               New York, NY  10005
               (212) 530-5000

               Morris, Nichols, Arsht & Tunnell
               1201 North Market Street
               P.O. Box 1347
               Wilmington, DE  19899
               (302) 658-9200

          Financial Advisors:

               Barr Devlin Associates Incorporated 
               450 Park Avenue
               New York, NY  10022

               New Harbor Incorporated
               885 Third Avenue
               New York, NY  10022

          2.   Columbia's Official Equityholders' Committee:

          Members:

               Robert F. Baker
               General Conference Corp. of Seventh Day
                Adventists     
               David H. Goodman
               Kenneth E. Lehman
               Carl Stern
               The Titmus Foundation, Inc.
               Fidelity















                                       V-4
<PAGE>   217
               Marion E. Vaughn

          Invitees:

               CALPERS
               Ohio State Teachers Retirement System

          Counsel:

               LeBoeuf, Lamb, Greene & MacRae
               125 West 55th Street
               New York, NY  10019
               (212) 424-8000

               Cooch and Taylor
               824 Market Street
               P.O. Box 1680
               Wilmington, DE  19899
               (302) 652-3641

          Financial Advisors:

               Smith Barney
               388 Greenwich Street
               New York, NY  10013

     D.   MEETINGS WITH CREDITORS' AND EQUITYHOLDERS'
          COMMITTEES

     Throughout Columbia's Reorganization Case, representatives of Columbia have

met regularly with representatives of both its Equityholders' and Creditors'

Committees to discuss Columbia's ongoing business operations, the various

motions which have been filed by Columbia and others from time to time with the

Bankruptcy Court, the quantification and resolution of Claims against Columbia

and the elements, strategy and timing for Plans of Reorganization for Columbia

and TCO.  Extensive discussions with the Columbia Committees occurred regarding,

inter alia, (i) appropriate methodologies for calculating post-petition interest

on the Borrowed Money Claims against Columbia and the allowability of pre-

payment premiums or call penalties on

















                                       V-5
<PAGE>   218
Columbia's Debentures and Medium Term Notes; (ii) the structure and terms of

various reorganization plans for Columbia and TCO; (iii) the tax effects of such

various reorganization structures; (iv) the feasibility of various capital

structures for a reorganized Columbia; (v) the litigation over the Intercompany

Claims and the impact of such litigation on Columbia and its reorganization,

including issues relating to the solvency of Columbia and TCO, and (vi)

proceedings relating to the liquidation and appropriate treatment of Producer

Claims against TCO.  For a further description of the negotiations regarding

Columbia's Borrowed Money Claims and other plan-related discussions with the

Committees, see Section IV.A, "Borrowed Money Claims and the Negotiations and

Settlement of Such Claims".    

     E.   ADMINISTRATIVE FEE ORDER/APPOINTMENT OF FEE
          EXAMINER

      On motion of Columbia and TCO dated October 18, 1991, the Bankruptcy Court

entered an order (the "Administrative Fee Order") dated November 15, 1991,

establishing procedures for interim compensation and reimbursement of expenses

of all professionals.  Due to the numerous professionals retained in Columbia's

and TCO's cases, the Bankruptcy Court deemed it necessary to appoint

Professional Fee Examiners, Inc. as the fee examiner (the "Fee Examiner") to

assist the Court in reviewing fee applications in Columbia's and TCO's cases

which are in excess of $75,000.  To date, the Fee Examiner has filed reports













                                       V-6
<PAGE>   219
relating to the first two interim fee periods: July 31, 1991 through March 31,

1992 (the "First Fee Period"); and April l, 1992 through November 30, 1992 (the

"Second Fee Period").  A supplemental report was filed as to the First Fee

Period, and a hearing on the interim fee applications covered by the First Fee

Period was held on June 13, 1994, at which time an order approving fees for that

period was entered.  No hearing has yet been scheduled regarding the Second Fee

Period.

     F.   SIGNIFICANT PROCEEDINGS IN THE CHAPTER 11 CASE
          AND STATUS OF RELATED CLAIMS

          1.   CASH COLLATERAL ORDER

     As of the Petition Date, the total principal amount of secured debt owed to

Columbia by TCO on Columbia's secured Claim against TCO was approximately $1.3

billion, secured by substantially all the property of TCO.  The secured

indebtedness consists of (i) the principal amount of $410 million and

approximately $3 million of pre-petition interest arising under the Inventory

Financing Agreement dated June 19, 1985 between TCO and Columbia (the "Inventory

Financing Agreement"), secured by a lien on TCO's stored gas inventory (the

"Inventory Collateral") and (ii) mortgage indebtedness in the approximate amount

of $930 million in principal plus pre-petition interest of $29 million arising

under the TCO Indenture pursuant to which TCO issued first mortgage bonds to

Columbia, which bonds were secured by substantially all of TCO's non-storage

inventory assets and property (the "Mortgage Collateral").  All present and

future proceeds, offspring, rents, or profits of the





















                                       V-7
<PAGE>   220
Inventory Collateral and the Mortgage Collateral, to the extent held or received

by TCO, constitute "cash collateral" as defined in section 363 of the Bankruptcy

Code.

     On or about July 31, 1991, TCO filed a motion with the Bankruptcy Court

seeking an emergency order authorizing it to use cash collateral pursuant to

section 363 of the Bankruptcy Code, and granting adequate protection to

Columbia.  On August 23, 1991, the Bankruptcy Court entered a final order

(retroactively effective as of the Petition Date) authorizing TCO to use

Columbia's cash collateral and granting Columbia replacement liens and security

interests in TCO's post-petition assets, to the extent such liens and security

interests were valid, perfected and unavoidable as of the Petition Date and to

the extent the value of the collateral securing Columbia's secured claims

diminished after the Petition Date as a result of TCO's use of the cash

collateral.  Columbia's post-petition liens and security interests were

expressly subordinated to (i) TCO's debtor-in-possession financing facility;

(ii) post-petition liens held by purchasers of winter service gas from TCO under

certain winter service agreements; (iii) other pre-petition liens on inventory,

if valid; (iv) claims of the trustee under the Inventory Financing Agreement for

compensation, reimbursement and indemnification, and (v) the unpaid expenses of

members of the TCO Creditors' Committee and the unpaid fees and expenses

incurred by all the professionals retained by TCO and the TCO Creditors'

Committee in TCO's






















                                       V-8
<PAGE>   221
bankruptcy proceeding to the extent allowed by the Bankruptcy Court.

          2.   SALE OF COLUMBIA CANADA

     On November 25, 1991, Columbia and Anderson Exploration Ltd. ("Anderson")

executed an agreement (the "Columbia Canada Sale Agreement") pursuant to which

Columbia agreed to sell to Anderson all of Columbia's issued and outstanding

shares of Columbia Gas Development of Canada Limited ("Columbia Canada"), a

wholly-owned oil and gas exploration and production subsidiary of Columbia

operating in Canada.  Anderson agreed, pursuant to the Columbia Canada Sale

Agreement, inter alia, to pay Columbia an aggregate consideration of $109.3

million (Cdn.) (the "Purchase Price"), plus or minus an adjustment for changes

in working capital subsequent to the Columbia Canada balance sheet dated June

30, 1991.  

     The Columbia Canada Sale Agreement also contained certain obligations on

the part of Columbia after the sale.  Columbia assumed responsibility for

certain litigation that is currently pending against Columbia Canada including a

number of civil suits (the "Specified Litigation") and three separate suits

concerning the properties located in the Kotaneelee Production area (the

"Kotaneelee Litigation").  Columbia has the right to conduct both the Specified

Litigation and the Kotaneelee Litigation to conclusion and has assumed certain

indemnification obligations with respect to the two types of litigation.  In the

case of the Specified Litigation, the indemnification pertaining
























                                       V-9
<PAGE>   222
thereto (the "Specified Litigation Indemnification") covers only the identified

cases pending at the closing of the Columbia Canada Sale Agreement (the "Canada

Closing") and any liability to employees terminated prior to that date.  

     With regard to the indemnification pertaining to the Kotaneelee Litigation

(the "Kotaneelee Litigation Indemnification"), the indemnity extends to any

actions filed within the later of six years following the Canada Closing or

thirty months after the termination of the litigation pending at the Canada

Closing or litigation arising out of matters pending at such Closing.  In the

case of the Kotaneelee Litigation Indemnification, Columbia has the right to

bind Columbia Canada to settlement agreements.  Judgments resulting in a change

in the nature of the interest held by Columbia Canada or even in a forfeiture of

the interest could be rendered.  Under both the Specified Litigation

Indemnification and the Kotaneelee Litigation Indemnification, Columbia agreed

to indemnify Anderson for all litigation expenses, costs, damages and losses

incurred as a result of any litigation covered under the indemnifications.  

     Columbia's maximum liability to Anderson for these post- sale obligations

is limited to the Purchase Price plus interest thereon at the rate of seven

percent (7%) per year compounded annually (hereinafter referred to as the

"Aggregate Indemnification Obligation").  Columbia's post-sale obligations to

Anderson are secured under the terms of a "Security


























                                      V-10
<PAGE>   223
Agreement" pursuant to which $30 million (Cdn.) of the sales proceeds was

deposited with Montreal Trust Company, a Canadian trust company, in an escrow

account (the "Kotaneelee Escrow") in which interest earned will accumulate.  The

Columbia Canada Sale Agreement provides that an additional $25 million (Cdn.) is

to be added to the Kotaneelee Escrow upon confirmation of the Columbia Plan, and

that letters of credit may be substituted for cash in the Kotaneelee Escrow. 

Under the Columbia Canada Sale Agreement, the Kotaneelee Escrow may be reduced

if it maintains an investment grade rating on its debt for matters following the

Effective Date.  Columbia expects to replace the Kotaneelee Escrow with a letter

of credit as permitted under the Columbia Canada Sale Agreement.

     On December 31, 1991, the Bankruptcy Court approved the Columbia Canada

Sale Agreement pursuant to the Order Approving Share Sale and Purchase Agreement

Between The Columbia Gas System, Inc. and Anderson Exploration Ltd., Providing

For:  (A) the Sale to Anderson of All of the Capital Stock of Columbia Gas

Development of Canada Ltd., Free and Clear of All Liens, Encumbrances and Other

Interest; (B) Payment by Columbia of All Obligations Owed to Columbia Canada;

(C) Indemnification of Anderson by Columbia and Security for Such

Indemnification; and (D) Treatment of the Indemnification and Security as a

Superpriority Administrative Expense Claim (the "Canada Order").

     Pursuant to the Canada Order, Columbia's post-sale obligations to Anderson

were granted administrative expense
























                                      V-11
<PAGE>   224
claim status against Columbia and its Estate.  Except for the (i) administrative

expense claims of Chemical Bank under the DIP Facility, (ii) unpaid fees and

disbursements allowed pursuant to order of the Bankruptcy Court to professionals

retained pursuant to sections 327 and 1103 of the Bankruptcy Code up to a

maximum of $7.5 million (exclusive of compensation previously awarded whether or

not paid) and (iii) quarterly fees required to be paid to the U.S. Trustee

pursuant to 28 U.S.C. Section 1930(a)(6), Anderson's administrative expense

Claim has priority over all other administrative expense Claims of the kind

specified in sections 726(b), 364(c), 507(b) and 503(b) of the Bankruptcy Code,

regardless of whether such competing administrative expense Claim(s) of parties

other than Anderson arise in connection with Columbia's Reorganization Case, a

superseding Chapter 7 case, or in any subsequent case or proceeding filed by or

against Columbia under the provisions of the Bankruptcy Code.

     The Canada Order also provides that Anderson's Claims against Columbia or

its Estate shall not be estimated under the provisions of section 502(c) of the

Bankruptcy Code, or disallowed under the provisions of section 502 of the

Bankruptcy Code, in Columbia's Reorganization Case, any superseding chapter 7

case, or in any subsequent case or proceeding filed by or against Columbia under

the provisions of the Bankruptcy Code.  If Anderson's Claims are estimated,

Anderson's Claims shall be estimated in the full amount of the Purchase Price

plus accrued interest as described above, and shall be estimated solely for 
























                                      V-12
<PAGE>   225
purposes of determining the feasibility of any proposed plan of reorganization. 

For a discussion of the treatment of Claims against Columbia arising under the

Columbia Canada Sale Agreement, see Section VI.A, "Classification and Treatment

of Claims and Interests".      

          3.   INVESTMENT GUIDELINES LITIGATION

     On July 31, 1991, Columbia and TCO sought and obtained Bankruptcy Court

approval of their use of guidelines for the investment of all their respective

cash (the "Investment Guidelines Order").  The Bankruptcy Court expressly held

that, although Columbia's and TCO's investments were not limited to ones insured

or guaranteed by the United States, they did not need to obtain a bond from the

entity with which such funds were to be deposited or invested and that

compliance with the guidelines was "adequate and sufficient compliance with the

requirements of section 345(b) of the Bankruptcy Code...."

     On August 14, 1991, the U.S. Trustee filed a motion for reconsideration of

the Investment Guidelines Order, which was denied by the Bankruptcy Court after

conducting a hearing on October 3, 1991.  Subsequently, on October 15, 1991, the

U.S. Trustee appealed the Investment Guidelines Order to the District Court.  On

appeal, the case was assigned to a United States Magistrate who issued a report

on May 7, 1993 (the "Report").  The Report recommended reversal of the

Investment Guidelines Order on the basis that the guidelines did not comply with

the bonding requirements of section 345(b) of the Bankruptcy Code.
























                                      V-13
<PAGE>   226
On August 19, 1993, the District Court adopted the Report and reversed the

Investment Guidelines Order.  On August 30, 1993, Columbia and TCO appealed the

District Court's decision to the Third Circuit and filed a motion with the

District Court for a stay pending appeal.  On February 10, 1994, the District

Court granted the motion for a stay pending appeal.

     On August 29, 1994, the Third Circuit issued its decision (i) affirming the

District Court's decision except to the extent that it ruled on Columbia's and

TCO's investments in repurchase agreements and (ii) remanding the matter to the

District Court for further proceedings consistent with the opinion.  In its

opinion, the Third Circuit suggested to the District and Bankruptcy Courts that

they implement the statutory guidelines of section 345(b) of the Bankruptcy Code

in a gradual manner so as not to have an unduly adverse impact on the TCO and

Columbia Estates.

     Pursuant to the Third Circuit's decision, the matter was remanded to the

District Court and then to the Bankruptcy Court for further proceedings.  As of

the date hereof, no further proceedings have occurred.  In order to come into

compliance with the Third Circuit's decision, Columbia and TCO, in consultation

with the U.S. Trustee, have gradually transferred and will continue to transfer

their investments into government-backed securities and other similar government

insured or 


























                                      V-14
<PAGE>   227
guaranteed investments as their prior non-conforming investments have matured

and continue to mature.(1)

          4.   APPROVAL OF TAX SHARING PROCEDURES

     Under Section 12 of the HCA and Rule 45(a) promulgated thereunder, no

System company may extend credit to another without prior approval from the SEC,

including extensions of credit which may result from the allocation of

consolidated taxes.  Pursuant to Rule 45(c) under the HCA, a registered holding

company which files a consolidated federal income tax return is required to

secure the approval of the SEC for the allocation of the liabilities and

benefits arising from such return among the consolidated companies unless there

is in effect a tax agreement approved by the SEC providing for such allocation. 

     Columbia and its subsidiaries entered into the TAA prior to the Petition

Date which provides for the allocation of the benefits and liabilities arising

from their consolidated tax returns in a manner consistent with the requirements

of Rule 45(c).  The TAA provides for apportionment of the consolidated tax in

accordance with the "separate return tax" method.  The




















          
          ----------------------------
          (1)  On October 22, 1994, President Clinton signed into law the
               Bankruptcy Reform Act of 1994 which, among other things,
               amends section 345(b) of the Bankruptcy Code so as to insert
               the phrase "unless the court for cause orders otherwise" at
               the end of section 345(b).  This amendment allows the court
               to approve investments other than those permitted by section
               345(b) for just cause, therebyeffectively overruling the
               Third Circuit's August 29, 1994 decision in In re Columbia
               Gas System, Inc.  The relevant section of the Bankruptcy
               Reform Act, however, applies prospectively to cases filed
               after its effective date. 

                                      V-15
<PAGE>   228
TAA specifically provides that each loss-company (i.e., a company having a

negative separate return tax) will receive current cash payment in an amount

equal to its negative separate return tax, rather than receive the amount of

that tax benefit in a subsequent year when it has taxable income.  The TAA also

provides that each profit-company (i.e., a company having, after intercompany

eliminations, a positive separate return tax) will pay amounts equal to its

separate return tax liability.  The TAA also provides (consistently with Rule

45(c)) that no subsidiary company shall be required, as a result of the

allocation method provided in the TAA, to pay more than its separate return

tax. 

     No substantive amendments have been made to the TAA other than an amendment

in 1987 which provides that: "Any parent corporation gain or loss realized from

its sale of its interest in subsidiaries' securities will be assigned to parent

corporation and will not be allocated to other members".

     On November 27, 1991, Columbia and TCO filed a joint motion with the

Bankruptcy Court seeking authorization to pay federal income taxes (including

estimated federal income taxes) for 1991 and to allocate the System's 1991

consolidated tax liability in accordance with the TAA.  On December 12, 1991,

the Bankruptcy Court issued an order granting the authorization but expressly

noted that its authorization did not constitute an assumption of the TAA nor

create a rule of construction or legal presumption with respect to the effect or

validity of the TAA.  Thereafter, on April 13, 1992 and April 1, 1993, the

Bankruptcy Court issued






















                                      V-16
<PAGE>   229
similar orders authorizing Columbia and TCO to pay federal income taxes

(including estimated federal income taxes) for 1992 and 1993, respectively, and

to allocate the System's consolidated tax liability for those years in

accordance with the TAA.  These orders also provided that the Bankruptcy Court's

authorization did not constitute an assumption of the TAA.

     Pursuant to the Columbia Plan, Columbia will assume the TAA; and pursuant

to the TCO Plan, TCO also will assume the TAA.  Columbia believes that

assumption of the TAA is prudent and in the best interests of its Estate.  

          5.   LESOP LITIGATION

     In May 1992, Columbia suspended debt service payment on debentures issued

under the Leveraged Employee Stock Ownership Plan (the "LESOP") portion of the

Employees' Thrift Plan of Columbia Gas System (the "Thrift Plan") and announced

that no further debt service payments thereunder were likely until Columbia

emerged from bankruptcy.  No further debt service payments on those debentures

have been made since that announcement, but contributions to employees' accounts

by participating employers under the Thrift Plan have continued to be made

regularly.

     The failure to make those LESOP debt service payments has not affected the

benefits of participating employees under the Thrift Plan.  However, under the

terms of Columbia's guarantee of the repayment of the LESOP Debentures (the

"LESOP Guarantee"), those debenture holders have become subordinated
























                                      V-17
<PAGE>   230
creditors of Columbia due to the discontinuance of LESOP debt payments. 

     In March 1993, the successor trustee for the LESOP debenture holders (the

"LESOP Trustee") filed a complaint against Columbia in the Bankruptcy Court

alleging that Columbia contravened the Thrift Plan by directing the Thrift Plan

trustee to use contributions from participating employers to service employees'

Thrift Plan accounts rather than allocating those amounts to pay debt service on

the outstanding LESOP Debentures.  In May 1993, Columbia sought dismissal of the

LESOP Trustee's complaint by filing a motion for summary judgment with the

Bankruptcy Court.  The Bankruptcy Court denied that motion in March 1994, and

Columbia appealed that decision to the District Court.  That appeal has been

briefed and argued by the parties, but the District Court has not yet issued its

decision.(2)  Columbia continues to believe that it has meritorious defenses to

the LESOP Trustee's Claims and that nonpayment of the LESOP debt will not affect

participating employees' benefits under the Thrift Plan.  For a discussion of

the treatment of the LESOP Debentures and the LESOP Guarantee under the Columbia

Plan, see






















          
          ----------------------------
          (2)  In May 1994, the LESOP Trustee filed a motion for a
               preliminary injunction with the District Court for an order
               directing that the May 1994 contributions by participating
               employers to employees' Thrift Plan accounts and all future
               employer contributions be allocated first to pay debt
               service on the outstanding LESOP Debentures.  Columbia
               opposed that request as being groundless, and the District
               Court denied the LESOP Trustee's motion on May 27, 1994.

                                      V-18
<PAGE>   231
Section VI.A, "Classification and Treatment of Claims and Interests". 

          6.   AGREEMENT WITH BANKS REGARDING FUNDS SUBJECT
               TO SETOFF

     On December 17, 1992, the Bankruptcy Court approved a Stipulation and

Order, dated December 14, 1992, among Columbia, Morgan and Mellon Bank, N.A.

("Mellon") regarding the investment of certain funds which Columbia deposited

pre-petition in certain bank accounts with Morgan and Mellon (the "Setoff

Stipulation").  The funds on deposit with Morgan and Mellon are subject to

setoff against pre-petition debts owed by Columbia under Columbia's $500 Million

and $750 Million Credit Agreements.  As of the Petition Date, Columbia had on

deposit with Morgan the amount of $580,061.27 (the "Morgan Funds") and with

Mellon the amount of $2,333,477.73 (the "Mellon Funds").  As of the Petition

Date, Columbia was indebted to Morgan in an amount in excess of the Morgan Funds

and to Mellon in an amount in excess of the Mellon Funds.  Pursuant to section

553(a) of the Bankruptcy Code, the Morgan Funds and the Mellon Funds

(collectively, the "Combined Funds") were subject to setoff by Morgan and

Mellon, respectively.  

     Pursuant to the Setoff Stipulation, Columbia, Morgan and Mellon agreed that

the Combined Funds shall be invested in interest-bearing obligations, with

earned interest to be paid to Columbia from the date on which such investment is

made.  Columbia, Mellon and Morgan further agreed that, for the convenience of

investing the Combined Funds, the Mellon Funds























                                      V-19
<PAGE>   232
would be transferred to Morgan and combined with the Morgan Funds for investment

by Morgan.  Finally, the parties agreed that Morgan's and Mellon's setoff rights

are preserved, that Morgan succeeds to all of Mellon's setoff rights upon

transferring the Mellon Funds to Morgan and that Morgan is granted a first

priority lien in investments of the Combined Funds and proceeds thereof, other

than interest thereon which will be distributed to Columbia on a current basis. 

Pursuant to the Columbia Plan, Morgan's right of setoff shall be recognized, the

amounts payable to Morgan and Mellon duly credited against their Claims, and the

balance of accrued interest remitted to Columbia.

          7.   EXTENSION OF EXCLUSIVE PERIODS

     During the course of Columbia's Reorganization Case, the Bankruptcy Court

has granted Columbia numerous extensions of the periods during which it has the

exclusive right to file a plan of reorganization and to solicit acceptances

thereof (the "Exclusive Periods").  Most recently, on November 16, 1994, the

Bankruptcy Court entered an order extending Columbia's Exclusive Periods to the

earlier of: (i) the 180th day following the expiration date of the prior

exclusive periods and (ii) the 90th day following entry of a judgment in the

Intercompany Claims litigation (and as to the exclusive right to solicit

acceptances, 60 days thereafter), unless the judgment in the Intercompany Claims

litigation is entered after January 31, 1995, in which case the 45th day

following entry of the judgment
























                                      V-20
<PAGE>   233
in the Intercompany Litigation (and as to the solicitation period, 60 days

thereafter).  Pursuant to the terms of the November 16, 1994 order, unless

otherwise extended, Columbia's Exclusive Periods will expire on April 18, 1995

and June 19, 1995, respectively.

          8.   EXTENSION OF TIME TO REMOVE ACTIONS AND FILE
               PROOFS OF CLAIM ON BEHALF OF CREDITORS

     During the course of Columbia's Reorganization Case, the Bankruptcy Court

has extended numerous times the time periods within which Columbia may file

applications to remove related proceedings to the Bankruptcy Court and to file

proofs of claim on behalf of Creditors who failed to do so.  Currently, those

time periods, as last extended, have not expired.

          9.   SURETY BOND AGREEMENT

     By Motion dated January 29, 1992, Columbia sought an order of the

Bankruptcy Court providing that claims of up to $20 million which may arise

under two pre-petition indemnity agreements (the "Surety Indemnity Agreements")

between Columbia and, respectively, (i) Reliance Insurance Company, United

Pacific Insurance Company and Planet Insurance Company and (ii) Reliance

Insurance Company of New York and United Pacific Insurance Company of New York

(collectively, the "Sureties"), will be accorded subordinated super-priority

administrative claim status under section 364(c)(i) of the Bankruptcy Code.  The

Surety Indemnity Agreements govern the issuance and terms of bonds issued by the

Sureties on behalf of Columbia's non-debtor subsidiaries.  Such surety bonds are

required with respect to





















                                      V-21
<PAGE>   234
many aspects of the subsidiaries' operations.  An order granting the requested

relief was entered by the Bankruptcy Court on February 19, 1992.

     Subsequently, on October 2, 1992, Columbia filed a motion with the

Bankruptcy Court seeking an order authorizing it to assume the two Indemnity

Agreements with the Sureties.  On October 16, 1992, the Bankruptcy Court entered

an order authorizing Columbia to assume the Surety Indemnity Agreements and to

pay all arrearages thereunder.  For a discussion of the treatment of the Claims

of the Sureties under the Columbia Plan, see Section VI.A, "Classification and

Treatment of Claims and Interests".  

          10.  RECAPITALIZATION OF SUBSIDIARIES

     Due to special business requirements or changed financial needs, the

capital structures of certain non-debtor operating subsidiaries of Columbia were

restructured.  In all instances, this was done with the approval of the

Bankruptcy Court and the SEC under the HCA.  Since the Petition Date, the

Bankruptcy Court authorized Columbia to recapitalize Columbia Gas Development

Corporation, TriStar, Columbia Gulf, Columbia Coal Gasification Corporation and

Columbia LNG.

          11.  AMENDMENT OF EMPLOYMENT AGREEMENTS WITH
               SENIOR OFFICERS AND ASSUMPTION OF 
               RETENTION AGREEMENTS

     By Motion dated August 24, 1993, Columbia sought an order of the Bankruptcy

Court approving (i) the extension and amendment of existing employment

agreements (the "Extension






















                                      V-22
<PAGE>   235
Agreements") between Columbia and six key senior executives employed by various

subsidiaries of Columbia, (ii) an employment agreement between Columbia and R.

Larry Robinson, President of TCO and (iii) Columbia's assumption of thirty-one

(31) key employee retention agreements with employees at TCO and other

affiliates of CG (the "Retention Agreements").  By this Motion, Columbia sought

to offer certain senior employees of its subsidiaries appropriate incentives to

remain as employees until confirmation of plans of reorganization for TCO or

Columbia, as applicable.  An order (i) approving the Extension Agreements and

the Robinson employment agreement, with certain revisions, and (ii) authorizing

the assumption of the Retention Agreements was entered on October 19, 1993 by

the Bankruptcy Court.

     The Extension Agreements, as revised and approved by the Bankruptcy Court,

run from July 19, 1993 until confirmation of a plan of reorganization for

Columbia or TCO as applicable, except for the Extension Agreement of C. Ronald

Tilley, Chief Executive Officer of Columbia of Ohio, which extends his

employment through July 18, 1995.  In addition, the Extension Agreements, as

revised, provide, inter alia, that in the event the officer covered thereby

remains employed by any of Columbia's affiliates or subsidiaries at the date of

confirmation of a Columbia or TCO plan of reorganization, the officer will

receive a retention payment equal to his annual compensation at the time of

confirmation.  However, if the officer is terminated, other than for cause,

prior to confirmation, he will be entitled to a






















                                      V-23
<PAGE>   236
severance payment equal to one year's salary plus a continuation of benefits for

a twelve-month period.  

     The Retention Agreements provided that if the key employees covered

remained employed with TCO, or one of Columbia's subsidiaries or affiliates

through July 14, 1994, they would receive a retention award, ranging in amount

from 50% to 100% of the employee's annual salary.  Upon the expiration of the

Retention Agreements in 1994, the retention awards were paid to the covered

employees.

          12.  EMPLOYEE RETENTION AND RELEASE PROGRAM

     On September 24, 1993, Columbia filed a motion for an order of the

Bankruptcy Court authorizing Columbia to undertake and assume the costs

associated with implementation of an employee retention and release program (the

"Retention Program") with respect to certain employees whose job functions would

become surplus to the needs of Columbia's subsidiaries over the next thirty-six

months.  

     The Retention Program provides that qualifying employees whose jobs are

being eliminated but whose services are still required for a certain period of

time will receive a payment, upon their release, calculated on the basis of two

weeks' salary and benefits for every full year of service, to be made either in

lump sum or in the form of salary and benefits continuation for the requisite

time period.  However, if the affected employees depart prior to their

respective release dates, they will be ineligible to receive the retention

payment.  On October




















                                      V-24
<PAGE>   237
18, 1993, the Bankruptcy Court entered an order approving the Retention Program

and authorizing Columbia to undertake and assume its allocated share of the

costs of the Retention Program.

          13.  DATA ROOM 

     Upon petition by the TCO Creditors' Committee, the Bankruptcy Court in

March 1994 approved procedures for the establishment of a data room to make

business information available to third parties which may have an interest in

acquiring TCO.  In accordance with those procedures, a data room was established

the following month in Charleston, West Virginia.  Although six companies

initially requested admission, only four became qualified and reviewed the

information available in the data room after paying the required $50,000

entrance fee.  The participants concluded their review by June 20, 1994, and the

data room closed in accordance with court-approved procedures.  None of the data

room entrants submitted to Columbia or TCO any proposal for acquiring TCO or its

assets.  As reported in Columbia's prior public disclosures, management believes

that the value that the TCO Plan places on that company reflects its full value.

     By letter dated August 19, 1994, Dimeling, Schreiber and Park ("Dimeling")

submitted to the Chairman of the Board of Columbia a proposal for the

reorganizations of Columbia and TCO whereby Dimeling and an investor group would

invest $500 million in newly issued equity of Columbia and, in return, receive

the
























                                      V-25
<PAGE>   238
right to propose an initial slate of directors for Reorganized Columbia. 

Dimeling's proposal also contemplated the sale of the distribution assets of

Columbia for approximately $1.4 billion and the use of the cash proceeds

therefrom to pay (i) Producers $1.3 billion in settlement of all their Claims,

(ii) all priority and other unsecured Claims against TCO in full and (iii) all

unsecured Claims against Columbia in full, in cash.

     After a careful review and analysis of Dimeling's proposal, Columbia, with

the assistance of its financial advisors, determined that Dimeling's proposal

was inadequate, not feasible and thus not in the best interests of Columbia, TCO

and their respective Estates.

          14.  LOAN TO COLUMBIA'S THRIFT PLAN

     On February 10, 1995, Columbia filed a motion with the Bankruptcy Court

seeking authority to make an interest-free loan to Columbia's Thrift Plan to

allow all participants therein (except those who are current and former

employees of TCO)(3) or their beneficiaries immediate access to those Thrift 

Plan funds which were frozen as a result of the seizure of the Confederation 

Life Insurance Company ("Confederation Life") by its insurance regulators.

     Under the Thrift Plan, participants may invest their savings in fourteen

investment options, including a Money




















          
          ----------------------------
          (3)  On or about February 10, 1995, TCO also filed a motion with
               the Bankruptcy Court seeking entry of an order authorizing
               TCO to make a separate loan to the Thrift Plan so as to
               allow TCO plan participants access to the funds frozen in
               the Confederation Life account.

                                      V-26
<PAGE>   239
Market/Investment Contract Fund (the "Fund") which holds interests in Fidelity's

Money Market Fund and guaranteed investment contracts.  On January 20, 1990, the

Thrift Plan acquired an investment contract issued by Confederation Life (the

"CL Contract"), which is the sole remaining contract held in the Fund, in the

amount of $6.5 million.  On August 12, 1994, Canadian and Michigan regulators

seized the assets of Confederation Life due to its financial condition.  As a

result, a new segregated subaccount was created to hold the CL Contract, thereby

freezing approximately 17% of the Fund's investments.  As a result, 2,423 Thrift

Plan participants cannot access their funds in this subaccount.

      In order to alleviate hardships on participants who hold investments in

frozen Confederation Life contracts, Columbia determined, as many other plan

sponsors have also done, to make a loan to the Thrift Plan.  The total amount of

the loan to the Thrift Plan is approximately $4.3 million which, for

administrative convenience, represents the apportionment for Columbia's

subsidiaries (other than TCO) and the accumulated value of the frozen investment

in the CL Contract (including accrued interest) as of the close of business on

August 11, 1994 (the date Confederation Life's assets were seized).  As is

customary for these types of transactions, the loan is an interest-free,

unsecured loan, in the principal amount of the cash infusion to the Thrift Plan,

evidenced by a note to Columbia.  Repayment of the loan is to be made only from

the
























                                      V-27
<PAGE>   240
proceeds to be received from the liquidation and rehabilitation of Confederation

Life, state guaranty funds, litigation proceeds received for the benefit of

participants, and other sources in connection with the CL Contract.  Columbia

has waived repayment of the loan to the extent the loan exceeds the ultimate

recovery of proceeds from the Confederation Life account and related sources.

     On March 8, 1995, the Bankruptcy Court entered an order authorizing

Columbia's loan to the Thrift Plan.

          15.  COLUMBIA'S LONG-TERM INCENTIVE PLAN

     By motion dated February 17, 1995, Columbia sought an order authorizing it

to resume its long-term stock incentive plan for key employees (the "Incentive

Plan").

     The Incentive Plan was adopted by Columbia's board of directors on

September 18, 1985 and approved by Stockholders on May 28, 1986.  The Incentive

Plan originally authorized the issuance of up to 1.5 million in the aggregate of

Columbia's Common Stock.  The purpose of the Incentive Plan was to address the

need to provide long-term incentives to those officers and employees of

Columbia's subsidiaries who, in the opinion of the Compensation Committee of the

board of directors of Columbia, make substantial contributions to Columbia and

its subsidiaries by their ability, loyalty and efforts.  Six years of awards

were made pursuant to the Incentive Plan.  The Plan, however, was voluntarily

suspended by Columbia in 1991 prior to the Petition Date.  Currently, there are

approximately 165,000 shares of






















                                      V-28
<PAGE>   241
Common Stock that have not been previously awarded under the Incentive Plan. 

The Incentive Plan terminates by its own terms on September 18, 1995.

     Pursuant to its motion, Columbia sought authority to resume distributions

under the Plan to the thirty-two employees who are potentially eligible

participants in the Incentive Plan.  An order authorizing Columbia to resume the

Incentive Plan was entered by the Bankruptcy Court on March 15, 1995.

          16.  SHAREHOLDER RIGHTS PLAN

     In early 1995, Columbia's board of directors approved the adoption of a

Shareholder Rights Plan (the "Rights Plan") and an amendment of Columbia's

Certificate of Incorporation (the "Charter Amendment") related thereto and

directed the officers of Columbia to initiate applications for required HCA and

Bankruptcy Court approval.  The board of directors approved the Rights Plan in

order to protect shareholder value for Columbia's Stockholders.  The Rights Plan

is designed to require any person interested in acquiring ten percent or more of

the Common Stock to offer full value for the Common Stock.

     On February 1, 1995, Columbia filed a Declaration on Form U-1 with the SEC

seeking approval under the HCA for the adoption and implementation of the Rights

Plan, the Charter Amendment and the distribution of a proxy statement to

Stockholders soliciting their approval of the Charter Amendment.  On March 3,

1995, the SEC issued a notice regarding Columbia's Rights Plan requiring any

comments or requests for hearing to be submitted to the SEC
























                                      V-29
<PAGE>   242
by March 27, 1995.  On February 2, 1995, Columbia filed a motion with the

Bankruptcy Court for authorization to adopt the Rights Plan and so amend its

Certificate of Incorporation, subject to approval of such actions by the SEC and

approval of the Charter Amendment by Columbia's Stockholders (the "Rights Plan

Motion").  No hearing has yet been scheduled by the Bankruptcy Court regarding

the Rights Plan Motion.

     In summary, the Rights Plan provides that immediately following the

effective date of the Rights Plan, one "Right" will attach to each share of

Columbia Common Stock outstanding and to each new share of Common Stock

subsequently issued.  The "Rights" will separate from the Common Stock and will

be exercisable on the earlier of (the "Distribution Date"): (i) such date as

Columbia learns that a person or a group of affiliated or associated persons (an

"Acquiring Person") has acquired ten percent or more of the outstanding Common

Stock (a "Threshold Acquisition") or (ii) such date as may be designated by the

Board of Directors following the commencement or announcement of a tender or

exchange offer for Columbia's outstanding Common Stock by any person, if, upon

consummation of such offer, such person would beneficially own ten percent or

more of the outstanding Common Stock.

     After the Distribution Date and prior to a Threshold Acquisition, each

Right (except for Rights beneficially owned by an Acquiring Person) becomes a

right to purchase from Columbia, upon exercise thereof, for a purchase price of

$100, subject to






















                                      V-30
<PAGE>   243
adjustment, one-one thousandth of a share of Series A Participating Preferred

Stock ("Series A Preferred Stock").  When a Threshold Acquisition occurs, each

Right (other than Rights owned by an Acquiring Person) becomes a right to

purchase that number of one-one thousandths of a share of Preferred Stock which

is equal in number to the number of shares of Common Stock which, at the time of

such Threshold Acquisition, will have a market value equal to twice the purchase

price.  Until a Right is exercised, the holder thereof will have no rights as a

Stockholder of Columbia, including the right to vote or receive dividends.

     In addition, prior to being exercised, the Rights will have no economic

value in and of themselves and no dilutive effect on the Common Stock.  The

Rights Plan expires eighteen months after the date on which Columbia emerges

from bankruptcy, provided that if on such date there is pending any proposal for

an acquisition of ten percent or more of the Common Stock or a business

combination involving Columbia, the expiration date will be extended to the date

that is the thirtieth day after the date on which no such proposal is pending.

     The Series A Preferred Stock issuable upon exercise of the Rights will have

a par value of $10 per share.  Each one-one thousandth of a share of Series A

Preferred Stock issuable upon exercise of the Rights will be entitled to vote

and participate in dividends and other distributions on an equivalent basis with

one whole share of Common Stock.


























                                      V-31
<PAGE>   244
     G.   PROCEDURES RELATING TO FILING AND DETERMINATION
          OF CLAIMS PROCESS AND BAR DATE

          1.   BAR DATE/CLAIMS AGENT

     On December 13, 1991, the Bankruptcy Court entered an order (the "Bar

Order") establishing March 18, 1992 as the Bar Date by which Proofs of Claim

must be filed by all persons and entities, subject to certain enumerated

exceptions, that have or may have a Claim against Columbia.  Creditors were

required to file a Proof of Claim by the Bar Date for Claims which arose prior

to the Petition Date but did not fall within one of the enumerated exceptions. 

These exceptions included: (i) Claims listed on Columbia's Schedules of

Liabilities, if (A) the Claimant agrees with the amount, (B) the Claim is not

listed as disputed, contingent, or unliquidated and the (C) the claimant agrees

with the classification of the Claim; (ii) Claims previously allowed by the

Bankruptcy Court; (iii) holders of outstanding shares of Common Stock or

preferred or special stock of Columbia whose Claims are based solely upon

ownership of such stock; (iv) holders of public debt securities with maturity

dates after July 30, 1991 whose Claims are based solely upon ownership of such

debt securities; (v) Claims arising solely from pre-petition amounts owing under

a non-residential real property lease not rejected or assumed by Columbia; and

(vi) Claims of state and federal environmental agencies.

     An order clarifying the Bar Order and confirming that holders of commercial

paper need not file proofs of claim in respect of their Claims based solely upon

ownership of





















                                      V-32
<PAGE>   245
Columbia's commercial paper was entered by the Bankruptcy Court on March 16,

1992.

     The Bankruptcy Court also authorized Columbia to employ Poorman-Douglas

Corporation ("Poorman-Douglas") as the official Claims agent for purposes of

receipt and docketing of Claims.(4)  Notice of the Bar Date and proof of claim

forms were disseminated to Columbia's Creditors and Stockholders on or about

January 3, 1992.

               2.   CLAIMS OBJECTION PROCEDURES

     Since the Petition Date, approximately 7,629 proofs of claim, amounting to

approximately $2.974 billion as docketed, have been filed against Columbia's

Estate.  Of those, approximately 7,000 proofs of claim were filed by

Stockholders, debenture holders, or commercial paper holders based solely upon

ownership of the equity or debt securities issued by Columbia.  

     By order of the Bankruptcy Court dated July 29, 1992, Columbia obtained

authority to file procedural objections to Claims and to settle smaller Claims. 

On August 18, 1992, Columbia filed its First Omnibus Objection to Claims seeking

to expunge, reduce or reclassify thousands of Claims.  On January 12, 1993, the

Bankruptcy Court issued an order expunging, disallowing, reducing and/or

reclassifying approximately 7,100



















          
          ----------------------------
          (4)  However, with respect to the Borrowed Money Claims, pursuant
               to Columbia's motion seeking an order authorizing procedures
               to maintain records of holders of Borrowed Money Claims,
               discussed in Section G.3 below, such Claims must be
               reflected in the records of appropriate designated transfer
               agents as specified in that motion. 

                                      V-33
<PAGE>   246
Claims filed against Columbia.  This resulted in the removal of more than $174

million in Claims against Columbia.  On May 11, 1993, the Bankruptcy Court

entered a Supplemental Order which expunged, disallowed or reclassified

additional Claims that were the subject of the First Omnibus Objection.  On

March 24, 1995, Columbia filed its Second Omnibus Objection to Claims seeking to

expunge approximately one hundred Claims filed against Columbia.  Columbia will

continue to analyze and formulate objections, if necessary, to the remaining

Claims against Columbia, in order to resolve disputes not otherwise settled

under the Columbia Plan.

          3.   CLAIMS TRADING

     Throughout its Reorganization Case, Columbia has received numerous notices

regarding private transfers of Claims pursuant to Bankruptcy Rule 3001. 

Poorman-Douglas, Columbia's Claims Agent, has been recording these transfers on

Columbia's Official Claims Register.  To the extent Columbia and Poorman-Douglas

have been notified of transfers and such transfers have been approved by the

Bankruptcy Court, only the transferees of record of these Claims will receive

notices of hearings on the Disclosure Statement and the Columbia Plan as well as

ballots for voting upon that Plan, and only the transferees will receive

distributions under that Plan.  If a transfer of any Claim is not noticed or

approved by the Bankruptcy Court, Columbia's Plan will not recognize such

transfer.

     With respect to the recordation of Borrowed Money Claims and any transfers

of such Claims, on April 3, 1995, Columbia




















                                      V-34
<PAGE>   247
filed a motion with the Bankruptcy Court seeking an order authorizing procedures

to maintain records of holders of Borrowed Money Claims (the "Recordation

Motion").  Pursuant to the Recordation Motion, for purposes of recognizing

Borrowed Money Claims, the names, addresses and Claim amounts of holders of

Borrowed Money Claims must be reflected in the records of the appropriate

designated transfer agents specified in the Recordation Motion, and a transferee

of a Borrowed Money Claim will not be recognized as the valid holder thereof

unless such transfer has been properly noticed to the appropriate designated

transfer agent.

     H.   MISCELLANEOUS LITIGATION

          1.  MOUNTAINEER

     On or about May 19, 1994, Mountaineer Gas Company ("Mountaineer") filed in

the Bankruptcy Court motions (i) to file a late proof of claim (the "Extension

Motion") and (ii) for relief from the automatic stay to liquidate that Claim

(the "Stay Motion"; and together with the Extension Motion, the "Mountaineer

Motions").  By these Mountaineer Motions, Mountaineer sought to file a proof of

claim in connection with a civil action styled, Frank H. Fidler, III and Cheryl

M. Fidler v. Pennzoil Company and Mountaineer Gas Company, Civil Action No. 93C-

244l (the "Asbestos Litigation").  The Asbestos Litigation, filed in the Circuit

Court of Kanawha County, West Virginia on April 3, 1993, asserts that

Mountaineer is the successor corporation to Columbia Gas of West Virginia, Inc.

(a






















                                      V-35
<PAGE>   248
former wholly-owned subsidiary of Columbia) and is liable for injuries the

plaintiff allegedly sustained as a result of his exposure to asbestos while

employed by Columbia Gas of West Virginia from about 1968 to 1974.

     Specifically, Mountaineer sought to file a proof of claim for

indemnification as a third-party beneficiary under a contract, dated February

23, 1984, between Columbia and Mountaineer's parent company, Allegheny and

Western Energy Corporation, for the purchase and sale of Columbia Gas of West

Virginia (the "Stock Purchase Agreement").  In addition to its request to file

its indemnification claim after the Bar Date, Mountaineer sought relief from the

automatic stay so that it may file certain third-party claims against Columbia

in the Asbestos Litigation and pursue its indemnification rights, if any, under

the Stock Purchase Agreement relating to the Asbestos Litigation.

     After a hearing on the Mountaineer Motions on August 16, 1994, the

Bankruptcy Court (i) allowed Mountaineer to file a late proof of claim relating

to the Asbestos Litigation and (ii) denied Mountaineer's Stay Motion.  Pursuant

to that decision, on or about November 9, 1994, Mountaineer filed a contingent,

unliquidated proof of claim against Columbia based upon Columbia's alleged

indemnification obligations under the Stock Purchase Agreement in connection

with the Asbestos Litigation.  Columbia intends to file an objection to such

Claim in the near future. 


























                                      V-36
<PAGE>   249
          2.  KUNTZ LITIGATION

     As part of its First Omnibus Objection to Claims, Columbia objected to four

duplicate claims filed by Mr. Kuntz in the amount of $100,000 for emotional

distress allegedly arising from a gas pipeline explosion in Columbus, Ohio which

occurred in 1988.  Columbia objected to all four Claims filed by Mr. Kuntz on

the basis that Columbia was not liable to Mr. Kuntz since the pipeline that

exploded was owned by Columbia Ohio, a non-debtor subsidiary of Columbia.

     A hearing to consider Columbia's Omnibus Objection was held by the

Bankruptcy Court on May 11, 1993.  Mr. Kuntz failed to appear at the hearing. 

Based upon the testimony and other evidence provided by Columbia at the hearing,

the Bankruptcy Court entered an order disallowing the four proofs of claim filed

by Mr. Kuntz.

     On May 16, 1993, Mr. Kuntz filed a notice of appeal to the District Court. 

In June 1994, the District Court entered a Memorandum and Order affirming the

Bankruptcy Court's order disallowing Mr. Kuntz's Claim.  

     On July 18, 1994, Mr. Kuntz filed a notice of appeal of the District

Court's decision to the Third Circuit.  On February 22, 1995, the Third Circuit

entered a judgment order affirming the District Court's decision disallowing Mr.

Kuntz's Claim and awarding costs to Columbia.




























                                      V-37
<PAGE>   250

VI.  PLAN TREATMENT OF CLAIMS AND SUMMARY OF OTHER PLAN PROVISIONS

     A.   CLASSIFICATION AND TREATMENT OF CLAIMS AND INTERESTS

     All Claims and Interests are placed in the Classes set forth below except

that, in accordance with section 1123(a)(1) of the Bankruptcy Code,

Administrative Claims and Priority Tax Claims have not been classified.  The

treatment of various Claims against and Interests in Columbia are generally

described below.  This description is not intended to supersede the Columbia

Plan and, for the precise treatment of Claims and Interests, reference should be

made to the Columbia Plan.

     As further described below, the Columbia Plan provides for the payment, on

the Effective Date, of substantially all Claims that are then Allowed, in full,

together with post-petition interest calculated in accordance with the Columbia

Plan.  

     1.   UNCLASSIFIED CLAIMS

          a.   ADMINISTRATIVE CLAIMS

     Administrative Claims include Claims for costs and expenses of

administration of the Reorganization Case Allowed under sections 503, 507(a)(1)

and 507(b) of the Bankruptcy Code. Administrative Claims are unimpaired and

consist of the following:

               (i)  PROFESSIONAL CLAIMS

     Professional Claims consist of all Claims for unpaid fees and expenses of

attorneys, accountants, and other professional advisors retained pursuant to

Bankruptcy Court order by Columbia, the Columbia Creditors' Committee and the

Columbia















                                      VI-1
<PAGE>   251
Equityholders' Committee.  Professionals not retained pursuant to Bankruptcy

Court order, including professionals retained by the Indenture Trustee, may also

seek payment of fees and expenses if they can show, pursuant to an application

made to the Court, that they made a "substantial contribution" to the

Reorganization Case.  A bar date will be set for the filing of such "substantial

contribution" applications.  See Section VI.I.2.a, "Bar Dates for Certain

Administrative Claims - Professional Claims".

     Each Holder of an Allowed Professional Claim will be paid in full by

Columbia (unless Columbia and the Holder of such Claim agree to other treatment)

on the later of (i) the Effective Date or (ii) the tenth day after the date on

which an order allowing such Professional Claim becomes a Final Order.

     Most Professionals retained in the Reorganization Case are being paid

currently 90% of requested fees and 100% of requested expense reimbursements,

which amounts, as well as the remaining 10% of requested fees, are subject to

Bankruptcy Court approval.  Professionals may request that Columbia be required

to pay, subject to Bankruptcy Court approval, post-petition interest on the 10%

of requested fees that have been reserved.  Columbia has not determined whether

it will consent to pay such post-petition interest and reserves its rights to

object to any such requests.  Any Allowed post-petition interest approved by

Final Order will be paid at the same time as the underlying Claim.


























                                      VI-2
<PAGE>   252
     Columbia estimates that the Allowed Professional Claims which are to be

paid on or after the Effective date will aggregate approximately $4.8 million,

without regard to any post-petition interest which may be Allowed and paid

thereon.  

               (ii) POST-PETITION OPERATIONAL CLAIMS

     Post-Petition Operational Claims consist of all Administrative Claims that

have arisen in the ordinary course of Columbia's business during the pendency of

the Reorganization Case.  Post-Petition Operational Claims include, but are not

limited to, Administrative Claims of governmental units for taxes, trade vendor

and supplier payment obligations and obligations under contracts and leases.

     Post-Petition Operational Claims that are outstanding as of the Effective

Date will be assumed and paid by Reorganized Columbia as the same come due in

the ordinary course. 

               (iii)     ASSUMED EXECUTORY CONTRACT CLAIMS

     All of Columbia's executory contracts that have not been expressly assumed

or rejected by order of the Bankruptcy Court as of the Confirmation Date and

that are listed on Exhibit E to the Columbia Plan will be assumed or rejected or

otherwise dealt with as set forth on such Exhibit.  Among those contracts that

Columbia, subject to Bankruptcy Court approval, will assume is the TAA.  See

Section V.F.4, "Approval of Tax Sharing Procedures".  All executory contracts

that have not been expressly rejected will be assumed. 
























                                      VI-3
<PAGE>   253
     In accordance with the provisions of the Bankruptcy Code, Columbia is

required to cure any defaults arising from or in connection with the pre-

petition executory contracts and unexpired leases.  In the case of Columbia,

most of those contracts relate to Columbia's operations, including financial

services, public relations services and other professional services.  Such

obligations are denominated as Assumed Executory Contract Claims.

     Assumed Executory Contract Claims that are or become Allowed on or before

the Effective Date will be paid in cash on the Effective Date or upon such

earlier or later date as may be authorized by the Bankruptcy Court.  Any Assumed

Executory Contract Claim that becomes an Allowed Claim after the Effective Date

will be paid in cash within forty-five days after the end of the Calendar

Quarter in which such Claim becomes Allowed.

     Holders of Assumed Executory Contract Claims shall also be entitled to the

payment of post-petition interest for the period from the date payment was

required to be made under the contract to the date of payment calculated (i)

with respect to any executory contract evidenced by a written agreement that

sets forth a non-default interest rate, at the non-default contractual interest

rate set forth therein and (ii) in all other cases, at the rate of six (6%) per

annum, or as otherwise provided by the Court.  Post-petition interest on such

Claims shall be paid at the same time as payment is made on the underlying

Claim.
























                                      VI-4
<PAGE>   254
     Columbia estimates that Allowed Assumed Executory Contract Claims will

aggregate approximately $28.9 million, of which approximately $27.7 million

represents amounts payable under the TAA to subsidiaries of Columbia, other than

TCO, and for which Columbia will, under the TAA, be entitled to be reimbursed by

TCO on the Effective Date.

               (iv) U.S. TRUSTEE'S FEE CLAIMS

     Pursuant to 28 U.S.C. Section 1930(a)(6), Columbia, as a Chapter 11 debtor,

is required to pay certain fees to the U.S. Trustee on a quarterly basis during

the pendency of the Reorganization Case.  Such fees are based upon quarterly

distributions made by Columbia but in no event may such quarterly fees exceed

$5,000.  Throughout the course of the Reorganization Case, Columbia has remitted

such quarterly fees to the U.S. Trustee on a timely basis.  Columbia estimates

that there will be $5,000 of U.S. Trustee's Fee Claims outstanding on the

Effective Date.  Such Claims will be paid in full in cash on the Effective Date.

               (v)  MISCELLANEOUS ADMINISTRATIVE CLAIMS

     Miscellaneous Administrative Claims consist of all  Administrative Claims

other than Professional Claims, Post-Petition Operational Claims, Assumed

Executory Contract Claims and U.S. Trustee's Fee Claims.  Miscellaneous

Administrative Claims include the following:

     Contingent Indemnification Claims of officers, directors,

     employees and agents of Columbia and TCO.  In accordance with its

     certificate of incorporation, by-laws, other






















                                      VI-5
<PAGE>   255
     agreements and the laws of the State of Delaware, Columbia is required to

     indemnify the officers, directors, employees and agents of Columbia and its

     subsidiaries, including TCO.  Columbia believes that there are no such

     claims.



     Indemnity Claims arising under the Canada Sale Agreement.  These Claims

     arise pursuant to the Columbia Canada Sale Agreement in favor of Anderson,

     the purchaser of the stock of Columbia's former wholly-owned oil and gas

     production company, Columbia Canada. See Section V.F.2, "Sale of Columbia

     Canada."  An initial escrow of Cdn$30 million was established by Columbia

     as the Kotaneelee Escrow.  The Kotaneelee Escrow must be adjusted or

     replaced, depending on certain conditions, in accordance with the

     provisions of the Columbia Canada Sale Agreement.  Columbia intends to

     replace the Kotaneelee Escrow with a letter of credit for which Columbia

     estimates that it will incur approximately $470,000 in fees.  If Anderson's

     Claim has been liquidated by the Effective Date, Columbia will pay in cash

     the full amount of the Allowed Claim.  The Kotaneelee Escrow is subject to

     reduction depending on the outcome of the underlying Kotaneelee Litigation.



     Indemnity Claims under Columbia's Indemnity Agreements with the Reliance

     Group.  The Reliance Group has issued performance bonds on behalf of

     Columbia pursuant to a






















                                      VI-6
<PAGE>   256
     number of agreements.  See Section V.F.10, "Significant Proceedings in the

     Chapter 11 Case - Surety Bond Agreements".  Indemnity Claims arising under

     the agreements with the Reliance Group will, if liquidated on the Effective

     Date, be paid on the Effective Date, in full in cash, and, if not so

     liquidated, be assumed by Reorganized Columbia.



     All remaining Miscellaneous Administrative Claims that are unpaid as of the

Effective Date will be paid on the Effective Date in full in cash or as

otherwise agreed to or provided for by Bankruptcy Court order.

     Any Miscellaneous Administrative Claim liquidated prior to the Effective

Date shall be entitled to receive post-petition interest from the date

liquidated until payment thereof in cash calculated at the rate of 6% per annum,

or as otherwise provided by the Bankruptcy Court.

          b.   PRIORITY TAX CLAIMS

     Priority Tax Claims consist of all Claims for the payment of taxes entitled

to priority in payment pursuant to section 507(a)(8) of the Bankruptcy Code and

shall include any post-petition interest allowed by the appropriate statute

imposing such tax at a rate of interest set forth in such statute, or, if no

rate is set forth in such statute, at the rate of 6% per annum, or as otherwise

provided by the Bankruptcy Court, provided, however, that the rate of interest

to be paid with
























                                      VI-7
<PAGE>   257
respect to the Claim of the IRS will be governed by the provisions of the IRS

Order.  Pursuant to the IRS Order, TCO is obligated to the IRS for approximately

$111.9 million, including $24.6 million of post-petition interest due thereon

through December 31, 1995, unless the Bankruptcy Court concludes that TCO is not

responsible for post-petition interest.  To the extent that TCO is not obligated

to pay post-petition interest or fails to pay all or any portion of the

principal amount of the IRS Claim, Columbia will be obligated to make the

payment.  See Section IV.C, "Summary of Significant Claims in Columbia Chapter

11 Case and Their Settlements or Proposed Resolutions - The IRS Claims and

Settlement".  Columbia reserves the right to file an amendment to its Schedule

of Liabilities to reflect certain state tax Claims as to which no proofs of

Claim have been Filed, at the amount of the liability recognized by Columbia, in

order to avoid litigation over the dischargeability of such sums.

     Allowed Priority Tax Claims will be paid in cash on the Effective Date, if

then Allowed, or, if thereafter Allowed, within thirty days from the date on

which such Claim becomes an Allowed Claim.  However, Allowed Priority Claims

that are the subject of the IRS Order will be paid in cash in equal quarterly

installments beginning on the date which is three months after the Effective

Date and ending on the last quarterly date which is not later than the sixth

anniversary of the date of assessment of such Claims, provided that the first

quarterly
























                                      VI-8
<PAGE>   258
installment will be paid in three equal monthly segments beginning on the

Effective Date.  Each monthly or quarterly installment shall be paid together

with interest on such installment, at the rate set forth in the IRS Settlement

Agreement, accrued to the date of payment.  Reorganized Columbia may,

nevertheless, pay such IRS Claims in full or in part at any time on and after

the Effective Date without premium or penalty.

     Allowed Priority Tax Claims are unimpaired.

     2.   CLASSES OF CLAIMS AND INTEREST

          a.   CLASS 1 - DIP FACILITY CLAIM

     The DIP Facility Claim consists of the Claim, if any, arising under the DIP

Facility.  On the Effective Date, the DIP Facility Claim will be paid in full,

the DIP Facility shall be terminated and any letters of credit outstanding

thereunder shall either be terminated or extended pursuant to further agreements

with Chemical Bank.  Any Deficiency Claim arising from the DIP Facility will be

treated as a "superpriority" administrative expense claim in accordance with

section 364(c) of the Bankruptcy Code and the Final Order approving the DIP

Facility.  Columbia estimates that the DIP Facility Claim will total

approximately $48,000.

     The Class 1 Claim is unimpaired. 

          b.   CLASS 2 - NON-BORROWED MONEY CLAIMS

     Class 2 consists of all Claims which are not treated in any other Class

under the Columbia Plan.  These Claims consist primarily of, among other things,

uncashed dividend, interest




















                                      VI-9
<PAGE>   259
and other checks, miscellaneous insurance Claims, proxy and other fees,

intercompany payables, other trade payables and non-bankruptcy related fees of

the Indenture Trustee.  Holders of Allowed Class 2 Claims will be entitled to

receive post-petition interest calculated at a rate of 6% per annum or as

otherwise provided by the Bankruptcy Court.

     On the Effective Date, Columbia will pay to each Holder of an Allowed Class

2 Claim, cash in an amount equal to one hundred percent (100%) of the Allowed

amount of such Claim plus any post-petition interest Allowed thereon.

     Columbia estimates that the Allowed Class 2 Claims will aggregate

approximately $ 2.5 million.  

     Class 2 Claims are unimpaired. 

          c.   CLASS 3.1 CLAIMS - BORROWED MONEY CONVENIENCE 
               CLAIMS

     Class 3.1 consists of Borrowed Money Claims that, as of the Petition Date,

did not exceed $15,000 and that would be classified in Class 3.2 but for the

fact that such Claims did not exceed $15,000 as of such date.  Holders of

Allowed Class 3.1 Claims will be entitled to post-petition interest in an amount

to be determined as if such Claims were Class 3.2 Claims.

     On the Effective Date, Allowed Class 3.1 Claims and the post-petition

interest due thereon shall be paid in full in cash.  Columbia is unable to

estimate the number of Class 3.1 Claims but believes that for a relatively small

amount of cash it will be able to satisfy in full a large number of small 























                                      VI-10
<PAGE>   260
Claims.  Columbia believes that all Class 3.1 Claims are based on Debentures.

       Class 3.1 Claims are unimpaired.

          d.   CLASS 3.2 - BORROWED MONEY CLAIMS

     Class 3.2 consists of the following Claims that, as of the Petition Date,

were for an amount in excess of $15,000:

     (i)  DEBENTURE CLAIMS:  All Claims arising under the Debentures.  Each

     Holder of an Allowed Claim arising under a Debenture will be entitled to

     receive post-petition interest equal to the sum of (i) simple interest on

     the principal amount of such Debenture outstanding from time to time,

     assuming all sinking fund payments due after the Petition Date had been

     made as required by the 1961 Indenture, from the Petition Date to the date

     such Debenture would have matured by its terms in the absence of default,

     at the rate of interest provided for in such Debenture in the absence of

     default, and (ii) simple interest on the amount of each payment of interest

     and principal, including each sinking fund payment and the payment of

     principal due upon maturity, that was required to be made after the

     Petition Date to such maturity date in respect of such Debenture and was

     not made when due, from the date such payment was required to be made to

     the Effective Date, at the rate of 8% per annum.  No call premiums shall be

     paid.  


























                                      VI-11
<PAGE>   261
     (ii) $500 MILLION CREDIT AGREEMENT CLAIMS:  All Claims (other than the

     Auction Note Claims) arising under the $500 Million Credit Agreement.  Each

     Holder of an Allowed Claim arising under the $500 Million Credit Agreement

     will be entitled to receive post-petition interest equal to the sum of (i)

     simple interest on the unpaid principal amount of the obligation giving

     rise to such Claim, from the Petition Date to the Effective Date, at a rate

     equal to the six-month LIBOR rate plus 1.25% per annum, and (ii) simple

     interest on the amount of each payment of interest that was required to be

     made after the Petition Date in respect of such obligation and was not made

     when due, from the date such payment was required to be made to the

     Effective Date, at the same rate.  Interest payments will be deemed to have

     been required at regular six-month intervals from the Petition Date to the

     Effective Date as if there had been no default with the first such payment

     deemed to have been required on January 31, 1992.  The amount of the $500

     Million Credit Agreement Claims for the purposes of distribution shall be

     determined after taking into account distribution of the Setoff Funds.  See

     Section VI.F.5, "Setoffs".    

     (iii)  $750 MILLION CREDIT AGREEMENT CLAIMS:  All Claims arising under the

     $750 Million Credit Agreement.  Each Holder of an Allowed Claim arising

     under the $750 Million Credit Agreement will be entitled to receive post-

     petition
























                                      VI-12
<PAGE>   262
     interest equal to the sum of (i) simple interest on the unpaid principal

     amount of the obligation giving rise to such Claim, from the Petition Date

     to the Effective Date, at a rate equal to the six-month LIBOR rate plus 2%

     per annum, and (ii) simple interest on the amount of each payment of

     interest that was required to be made after the Petition Date in respect of

     such obligation and was not made when due, from the date such payment was

     required to be made to the Effective Date, at the same rate.  Interest

     payments will be deemed to have been required at regular six-month

     intervals from the Petition Date to the Effective Date as if there had been

     no default with the first such payment deemed to have been required on

     January 31, 1992.  The amount of the $750 Million Credit Agreement Claims

     for distribution purposes shall be determined after taking into account

     distribution of the Setoff Funds.  See Section VI.F.5, "Setoffs".  

     (iv)  COMMERCIAL PAPER CLAIMS:  All Claims arising under the Commercial

     Paper.  Each Holder of an Allowed Claim arising under Commercial Paper will

     be entitled to receive post-petition interest equal to the sum of (i)

     simple interest on the unpaid principal of such Commercial Paper from the

     Petition Date to the date such Commercial Paper would have matured by its

     terms in the absence of default, at the imputed rate of interest provided

     for in such Commercial Paper in the absence of default, (ii) simple 


























                                      VI-13
<PAGE>   263
     interest on such unpaid principal from such maturity date to the Effective

     Date, at a rate equal to the six-month LIBOR rate plus two percent per

     annum, and (iii) interest on the amount of each payment of interest that

     was required to be made after the Petition Date in respect of such

     Commercial Paper and was not made when due, from the date such payment was

     required to be made to the Effective Date, at the same rate.  Interest

     payments will be deemed to have been required at regular six-month

     intervals from the Petition Date to the Effective Date as if there had been

     no default with the first such payment deemed to have been required on

     January 31, 1992.

     (v)  BID NOTE CLAIMS:  All Claims arising under the Bid Notes.  Each Holder

     of an Allowed Claim arising under a Bid Note will be entitled to receive

     post-petition interest equal to the sum of (i) simple interest on the

     unpaid principal amount of the Bid Note giving rise to such Claim, from the

     Petition Date to the Effective Date at a rate equal to the six-month LIBOR

     rate plus two percent per annum, and (ii) simple interest on the amount of

     each payment of interest that was required to be made after the Petition

     Date in respect of such Bid Note and was not made when due, from the date

     such payment was required to be made to the Effective Date, at the same

     rate.  Interest payments will be deemed to have been required at regular

     six-month intervals from the Petition Date to the Effective
























                                      VI-14
<PAGE>   264
     Date as if there had been no default with the first such payment deemed to

     have been required on January 31, 1992.

     (vi) AUCTION NOTE CLAIMS:  All Claims arising under the Auction Notes. 

     Each Holder of an Allowed Claim arising under an Auction Note will be

     entitled to receive post-petition interest equal to the sum of (i) simple

     interest on the unpaid principal amount of the Auction Note giving rise to

     such Claim, from the Petition Date to the Effective Date, at a rate equal

     to the six-month LIBOR rate plus two percent per annum, and (ii) simple

     interest on the amount of each payment of interest that was required to be

     made after the Petition Date in respect of such Auction Note and was not

     made when due, from the date such payment was required to be made to the

     Effective Date, at the same rate.  Interest payments will be deemed to have

     been required to be made at regular six month intervals from the Petition

     Date to the Effective Date as if there had been no default with the first

     such payment deemed to have been required on January 31, 1992.

     (vii)  MEDIUM TERM NOTE CLAIMS:  All Claims arising under the Medium Term

     Notes.  Each Holder of an Allowed Claim arising under a Medium Term Note

     will be entitled to receive post-petition interest equal to the sum of (i)

     simple interest on the unpaid principal amount of such Medium Term Note,

     from the Petition Date through the date such Medium Term Note would have

     matured by its terms in
























                                      VI-15
<PAGE>   265
     the absence of default, at the rate of interest provided for in such Medium

     Term Note in the absence of default, and (ii) simple interest on the amount

     of each payment of interest and principal, including the payment of

     principal due upon maturity, that was required to be made after the

     Petition Date to such maturity date in respect of such Medium Term Note and

     was not made when due, from the date such payment was required to be made

     to the Effective Date, at the rate of 8% per annum.  

     (viii)  LESOP CLAIMS:  All Claims arising under the LESOP Guaranty.  Each

     holder of an Allowed Claim arising under the LESOP Guaranty shall be

     entitled to receive post-petition interest equal to the sum of (i) simple

     interest on the unpaid principal amount of the LESOP Debentures, assuming

     all sinking fund payments due after the Petition Date had been made as

     required by the LESOP Debentures, from the Petition Date to the date such

     underlying obligation would have matured by its terms in the absence of

     default, and (ii) simple interest on the amount of each payment of interest

     and principal, including each sinking fund payment and the payment of

     principal due upon maturity, that was required to be made after the

     Petition Date to such maturity date in respect of such underlying

     obligation and was not made when due, from the date such payment was

     required to be made to the Effective Date, at the rate of 8% per annum.  On

     the Effective Date, the LESOP
























                                      VI-16
<PAGE>   266
     will be terminated and the shares of Columbia Common Stock held by the

     LESOP Trustee will be purchased by Columbia for a price equal to the last

     available closing price for such shares.  The cash proceeds realized by the

     LESOP Trustee from such sale will be distributed to the Holders of Allowed

     LESOP Claims in reduction of the amounts distributable to them under the

     Columbia Plan.  See Section VI.H.4, "Plan Treatment of Claims and Summary

     of Other Plan Provisions - Corporate Governance, Directors, Officers -

     LESOP". 

     (ix)  RATE SWAP CLAIMS:  All Claims arising under the Rate Swap Agreement. 

     Each holder of an Allowed Claim arising under the Rate Swap Agreement shall

     be entitled to receive post-petition interest on the Termination Payment

     required to be made in respect of the obligation given rise to such Claim,

     from July 31, 1991 to the Effective Date at the federal funds rate plus 1%

     per annum, repriced and compounded daily.

     Each Allowed Class 3.2 Claim shall be paid in full, together with post-

petition interest calculated as set forth above, by the delivery to the Holder

thereof of its Pro Rata Share of (i) the Cash Consideration, if any, (ii) the

aggregate principal amount of each Series of New Indenture Securities, (iii)

shares of New Preferred Stock having an aggregate Liquidation Value of $200

million and (iv) shares of DECS having an aggregate Liquidation Value of $200

million, subject,
























                                      VI-17
<PAGE>   267
however, to the payment by Columbia of cash in lieu of fractional shares and

lots of New Preferred Stock and DECS of fewer than 100 shares and for the

rounding of New Indenture Securities entitlements to integral multiples of

$1,000.  See Section VI.F.2.e, "Cash in Lieu of Fractional Shares and Odd Lots;

Rounding of New Indenture Securities".  

     The amount of Cash Consideration will be determined by Columbia prior to

the Effective Date taking into account the cash that Columbia projects will be

available to it on the Effective Date, the cash Columbia estimates will be

required post-Effective Date for its and its subsidiaries' working capital and

liquidity needs, and the cash Columbia estimates will be required by it to

fulfill its obligations under the Columbia Omnibus Settlement.  Once the amount

of Cash Consideration, if any, is determined, and after taking into account

distributions represented by shares of New Preferred Stock and shares of DECS,

the balance of the distribution owed to Holders of Allowed Class 3.2 Claims

shall be in the form of New Indenture Securities divided among the respective

Series thereof substantially equally, with no Series having an aggregate

principal amount which is less than 70% of the aggregate principal amount of any

other Series.  See Section X.D, "Reorganized Columbia - Pricing of Securities",

for a discussion of the basis for pricing of the New Indenture Securities, New

Preferred Stock and DECS.


























                                      VI-18
<PAGE>   268
     Holders of Allowed Class 3.2 Claims shall have the option, to be exercised

pursuant to the ballot cast in connection with solicitations of acceptances of

the Columbia Plan, to request Reorganized Columbia to repurchase the shares of

New Preferred Stock and DECS which such Holders will receive on the Effective

Date. If the aggregate Liquidation Value of the shares of New Preferred Stock

and DECS received by those opting for the Take-Out Election is at least $200

million, Reorganized Columbia will endeavor in good faith to complete, within,

180 days after the Effective Date, a public offering of Columbia securities at

an aggregate public offering price equal to, when added to other funds that

Columbia, at its option, decides to apply to the repurchase of the New Preferred

Stock and DECS received by the Take-Out Electors, the Liquidation Value of the

such DECS and New Preferred Stock.  If the public offering is completed within

the 180 day period, Reorganized Columbia, concurrently with the closing of the

public offering and in any event on the date that the securities sold thereunder

are issued, will purchase the shares of DECS and New Preferred Stock issued to

the Take-Out Electors at an aggregate purchase price equal to the Liquidation

Value of such shares of DECS and New Preferred Stock less underwriting

commissions and discounts incurred by Reorganized Columbia in connection with

the public offering plus accrued and unpaid dividends, if any, on such DECS and

New Preferred Stock.

     If the public offering is not completed within 180 days after the Effective

Date, Reorganized Columbia shall have no






















                                      VI-19
<PAGE>   269
obligation to repurchase the New Preferred Stock and DECS issued to the Take-Out

Electors, but Reorganized Columbia may, at its option, repurchase such

securities using other available funds, in which event the Repurchase Price

shall equal the Liquidation Value of the shares so purchased plus the accrued

and unpaid dividends, if any, on such DECS and New Preferred Stock.

     Columbia estimates that Allowed Class 3.1 Claims and Allowed Class 3.2

Claims will aggregate approximately $2.4 billion and, as of the Effective Date,

Holders of such Claims shall be entitled to post-petition interest of

approximately $994 million.  The estimated amounts of each category of such

Allowed Claims are as follows:

<TABLE>
<CAPTION>
                    Estimated Claim Amounts
                    -----------------------
                         (in millions)

                       Pre-        Post-
                       Petition    Petition 
Basis of Claim         Claim       Interest      Total
- --------------         --------    --------      -----
<S>                    <C>         <C>            <C>
Debentures             $ 926.7     $ 427.0        $1353.7

$500 Million 
Credit Agreement         101.0        31.5          132.5

$750 Million 
Credit Agreement         404.5       138.2          542.7

Commercial Paper         268.0        89.5          357.5

Bid Notes                 76.6        26.3          102.9

Auction Notes             45.4        15.6           61.0

Medium Term              471.3       225.7          697.0
Notes

LESOP Guaranty            87.0        39.3          126.3

Rate Swap Claims           3.2         0.8            4.0
                       ----------- -----------   --------
     TOTAL:            $2383.7     $ 993.9        $3377.6

</TABLE>














                                      VI-20
<PAGE>   270
     The amounts to be distributed to Holders of Debenture Claims and Medium

Term Note Claims in accordance with the Columbia Plan may be diminished by the

legal and other fees and expenses sought by the Indenture Trustee for

bankruptcy-related services.  The Indenture Trustee has advised Columbia that it

will seek payment of such fees through an application to be made pursuant to

section 503(b) of the Bankruptcy Code which, if approved, will cause such fees

to be treated as an Administrative Claim and result in no diminution in

distributions to Holders of Debenture Claims and Medium Term Note Claims. 

However, if such application is denied, the Indenture Trustee has advised

Columbia that it will exercise its lien rights under Section 10.01 of the 1961

Indenture and have an amount equal to its fees and expenses withheld from

distributions to be made to Holders of Debenture Claims and Medium Term Note

Claims.  The Indenture Trustee has advised Columbia that it estimates that its

fees and expenses total approximately $500,000.

     Class 3.2 Claims are impaired.

     e.   CLASS 4 - SECURITIES ACTION CLAIMS

     Class 4 consists of all Securities Action Claims the Holders of which have

complied with the Supplemental Bar Date Order.  Columbia intends to seek entry

of the Supplemental Bar Date Order to require each Holder of a Securities Action

Claim or a like claim that has asserted indemnification Claims against Columbia

to file a proof of Claim which will provide certain
























                                      VI-21
<PAGE>   271
information to determine the amount and validity of the Claim.  A Holder of a

Securities Action Claim will have to file a proof of Claim by the Supplemental

Bar Date established by the Supplemental Bar Date Order or otherwise be forever

barred from asserting any Securities Action Claim against Columbia or

Reorganized Columbia.

     Pursuant to the Plan, Holders of Class 4 Claims will have the option to

accept the Offer of Settlement, which contains the following elements:

          1.   Columbia and various non-debtors shall contribute up to an
               aggregate of $18 million, subject to change as described below,
               as the Settlement Amount;

          2.   Only Holders of Columbia debt and equity securities purchased
               between the dates indicated below who either continued to hold
               such debt and equity securities as of March 31, 1991 or sold them
               during the period from March 31, 1991 through June 18, 1991 may
               receive distributions as Holders of Class 4 Claims;

          3.   Holders of Class 4 Claims whose Claims are based on ownership of
               shares of Columbia Common Stock shall be entitled to receive: (i)
               between $.50 and $1.00 for each share purchased on or after March
               1, 1990 but not later than September 30, 1990 or on and after May
               15, 1991 but not later than June 18, 1991 and held until at least
               June 19, 1991; (ii) between $1.50 and $3.00 for each share
               purchased on or after October 1, 1990 but not later than May 14,
               1991 and held until at least June 19, 1991; and (iii) between
               $.10 and $.20 for each share purchased on or after March 1, 1990
               and sold on or after March 31, 1991 but not later than June 18,
               1991;

          4.   Holders of Class 4 Claims whose Claims are based on ownership of
               debt securities of Columbia shall be entitled to receive (i)
               between $.50 and $1.00 for each $100 principal amount of debt
               purchased on or after March 1, 1990 but not later than September
               30, 1990 or on and after May 15, 1991
























                                      VI-22
<PAGE>   272
               but not later than June 18, 1991 and held until at least June 19,
               1991; (ii) between $1.50 and $3.00 for each $100 principal amount
               of debt purchased on or after October 1, 1990 but not later than
               May 14, 1991 and held until at least June 19, 1991; and (iii)
               between $.10 and $.20 for each $100 principal amount of debt
               purchased on or after March 1, 1990 and sold on or after March
               31, 1991 but not later than June 18, 1991; and

          5.   In consideration of the payments to be received pursuant to the
               Offer of Settlement, all Holders of Class 4 Claims receiving such
               distributions will release all claims such Holders may have
               against any of the Contributors and any other defendants in the
               Securities Action.

          The Settlement Amount to be actually paid to Holders of Class 4 Claims

pursuant to the Offer of Settlement will be determined following the

Supplemental Bar Date but prior to the approval of the Disclosure Statement by

the Bankruptcy Court.  Such Settlement Amount will be a function of the Maximum

Proof of Claim Amount.  If the Maximum Proof of Claim Amount is equal to or less

than $18 million, then each Qualifying Class 4 Claimant shall receive its pro

rata share of the Maximum Offer Amount.  If the Maximum Proof of Claim Amount is

between $18 million and $36 million, the Settlement Amount will remain at $18

million but the amounts to be paid to each Qualifying Class 4 Claimant will be

reduced from the maximum amount offered to the minimum amount offered in

proportion to the amount by which the Maximum Proof of Claim Amount exceeds $18

million and is less than $36 million.  

     If the Maximum Proof of Claim Amount exceeds $18 million, then the

Contributors may increase the Settlement Amount to the
























                                      VI-23
<PAGE>   273
extent necessary to permit each Qualifying Class 4 Claimant to receive the

minimum settlement amount to which it is entitled pursuant to the Offer of

Settlement, provided that payment of such increased amount may, at Reorganized

Columbia's option, be either in the form of cash, shares of Columbia Common

Stock, other debt or equity securities of Reorganized Columbia, or any

combination of the foregoing.  Alternatively, Columbia may withdraw the Offer of

Settlement in which case all Class 4 Claims shall be reclassified and treated as

Class 7 Claims.

     Columbia may also choose to withdraw the Offer of Settlement and have all

Class 4 Claims reclassified and treated as Class 7 Claims if Qualifying Class 4

Claimants holding Claims representing more than 25% of the Maximum Settlement

Amount reject the Offer of Settlement by failing to vote for the Columbia Plan. 

Columbia further has the option, in such a situation, to withdraw the Columbia

Plan from consideration.

     All Holders of Class 4 Claims voting against the Plan shall have their

Claims reclassified to, and treated as, Class 7 Claims. 

     Columbia intends to amend the Plan and Disclosure Statement following the

Supplemental Bar Date but prior to the approval of the Disclosure Statement by

the Bankruptcy Court to reflect the specific amounts to be distributed to

Qualifying Class 4 Claimants.

     Class 4 Claims are deemed impaired.
























                                      VI-24
<PAGE>   274
          f.   CLASS 5 CLAIMS - INTERCOMPANY CLAIMS

     Class 5 consists of the Intercompany Claims.  On the Effective Date,

pursuant to the Columbia Omnibus Settlement, the Intercompany Claims shall be

settled and discharged in full.

     Class 5 is unimpaired.

          g.   CLASS 6 - ASSUMED CLAIMS

               (i) CLASS 6.1 - INDEMNITY CLAIMS

     Class 6.1 consists of the pre-petition claims of the officers, directors,

employees and agents of Columbia, TCO or Columbia's other subsidiaries, to the

extent insurance proceeds from Columbia's D&O Insurance are inadequate or

unavailable to satisfy such claims, arising from liabilities assessed against

such officers, directors employees and agents for which Columbia has an

indemnity obligation under Delaware state law, the terms of Columbia's

certificate of incorporation or otherwise.

     Each Class 6.1 Claim shall be paid in full in cash (i) if Allowed on the

Effective Date, on the Effective Date, and (ii) if not then Allowed, in the

ordinary course by Reorganized Columbia after such Claim is Allowed.

     Columbia estimates that, as of the Effective Date, it shall not be required

to make any payments in respect of Allowed Class 6.1 Claims.

     Class 6.1 Claims are unimpaired.

          (ii) CLASS 6.2 - PBGC GUARANTEE CLAIMS
























                                      VI-25
<PAGE>   275
     Class 6.2 consists of Columbia's secondary obligations to the PBGC for

contributions to the pension fund of Columbia's subsidiaries.

     Under the Columbia Plan, Columbia's secondary obligations to the PBGC for

contributions to the pension fund of Columbia's subsidiaries shall be

unaffected.  Columbia estimates that such secondary obligations aggregate $150

million, but Columbia believes that, as of the Effective Date, no payments in

respect of the Allowed Class 6.2 Claim will be required.   

     The Class 6.2 Claim is unimpaired.

          (iii) CLASS 6.3 - SHAWMUT GUARANTEE CLAIM

     Class 6.3 consists of Columbia's guarantee to Shawmut Bank, N.A. of certain

of the lease obligations with respect to the Columbus, Ohio headquarters of its

subsidiary, Columbia Gas of Ohio, Inc. 

     Under the Columbia Plan, Columbia's secondary obligations to Shawmut Bank,

N.A. shall be unaffected.  Columbia believes that, as of the Effective Date, no

payments in respect of the Allowed Class 6.3 Claim will be required. 

     The Class 6.3 Claim is unimpaired. 

          h.   CLASS 7 - NON-SETTLING SECURITIES ACTION CLAIMS

     Class 7 consists of all Claims classified in Class 4 as of the Plan Mailing

Date, the Holders of which do not vote for the Plan.  This includes all

Complying Class 4 Claimants that are not Qualifying Class 4 Claimants.


























                                      VI-26
<PAGE>   276
     All Class 7 Claims will be assumed by Columbia on the Effective Date.  Each

Holder of a Class 7 Claim shall be entitled to pursue its Claim and shall be

paid within forty-five days after the end of the Calendar Quarter in which such

Claim becomes Allowed.

     Class 7 Claims are unimpaired.

          i.   CLASS 8 - INTERESTS IN COLUMBIA COMMON STOCK 

     Class 8 consists of all Interests of the Stockholders in Columbia Common

Stock.  

     The Columbia Equityholders' Committee believes that Class 8 Interests may

be affected by the Columbia Plan as a result of the issuance of DECS (to the

extent not repurchased from the Take-Out Electors) and possibly of additional

shares of Columbia Common Stock, and that the Class is impaired.

      The Class 8 Interests shall be deemed impaired under, and shall be

entitled to vote on, the Columbia Plan.

     b.   TRANSACTIONS ON THE EFFECTIVE DATE

     The following transfers and transactions shall take place on the Effective

Date:

     1.   Reorganized Columbia shall take or cause to be taken all actions which

are necessary or appropriate to effect:

     (a)  filing with the Secretary of State of the State of Delaware a revised

     certificate of incorporation substantially in the form of Exhibit A

     attached to the Columbia Plan and the Designation Certificates with respect






















                                      VI-27
<PAGE>   277
     to the New Preferred Stock and DECS in the form attached as Exhibits C and

     D to the Columbia Plan.

     (b)  issuance of the New Preferred Stock and DECS. 

     (c)  issuance of the New Indenture Securities.

     2.   Reorganized Columbia shall enter into the New Indenture.

     3.   Reorganized Columbia shall enter into one or more Disbursing Agent

Agreements.

     4.   Unless Columbia shall waive the condition to the Effective Date with

respect thereto, Reorganized Columbia shall enter into the Working Capital

Facility and the Term Loan Facility.

     5.   Reorganized Columbia shall make all cash payments required to be made

under the Columbia Plan on the Effective Date to Holders of Allowed Claims other

than Class 3.1 and Class 3.2.

     6.   Reorganized Columbia shall deliver to the appropriate Disbursing Agent

or Disbursing Agents all consideration required to be paid to Holders of Allowed

Class 3.1 and 3.2 Claims on the Effective Date.

     7.   The Disbursing Agent or Disbursing Agents shall make all distributions

required to be made pursuant to the Columbia Plan to Holders of Allowed Class

3.1 and 3.2 Claims subject to the receipt of the Surrender Instruments or

compliance by such Holders with the requirements of the Columbia Plan related 


























                                      VI-28
<PAGE>   278
thereto and further subject to the lien of the Indenture Trustee.

     8.   The Setoff Funds (exclusive of any interest earned and accrued

thereon) shall be distributed in accordance with the terms of the Setoff Order

and the interest earned and accrued on the Setoff Funds shall be distributed to

Reorganized Columbia.

     9.   Unless Columbia withdraws the Offer of Settlement as permitted by the

Columbia Plan, the Settlement Amount shall be distributed to the Qualifying

Class 4 Claimants in accordance with the terms of its Offer of Settlement.

     10.  Reorganized Columbia shall adjust or replace the Kotaneelee Escrow in

accordance with the provisions of the Columbia Canada Sale Agreement.

     11.  The Stipulation of Dismissal With Prejudice shall have been filed with

the United States District Court for the District of Delaware.

     12.  The LESOP shall be terminated and Columbia shall purchase from the

LESOP Trustee the Columbia Common Stock held by it.

     13.  Reorganized Columbia shall take any and all further actions necessary

or appropriate to effectuate the Columbia Plan.

     C.   NEW INDENTURE AND NEW INDENTURE SECURITIES

     Holders of Allowed Class 3.2 Claims shall receive, as part of the payment

on their Claims, New Indenture Securities issued pursuant to the New Indenture. 

The terms and conditions of the


























                                      VI-29
<PAGE>   279
New Indenture are described in Section X.F.2, "Indenture Securities".

     D.   NEW PREFERRED STOCK AND DECS

     Holders of Allowed Class 3.2 Claims shall also receive, as part of the

payment on their Claims, shares of New Preferred Stock and DECS (subject to

their right to elect the Take-Out Election).  The terms and conditions of the

New Preferred Stock and DECS are described in, respectively, Section X.E.5,

"Securities To Be Issued Pursuant To The Plan - New Preferred Stock", and

Section X.E.3, "Securities to be Issued Pursuant to the Plan - Equity DECS

(Dividend Enhanced Convertible Stock(TM).)". 

     E.   REORGANIZED COLUMBIA OR THIRD PARTY AS DISBURSING AGENT FOR
          CLAIMS

     The Columbia Plan allows Reorganized Columbia or one or more third-parties,

as Reorganized Columbia may in its sole discretion employ, to act as Disbursing

Agent.  The Disbursing Agent shall make all distributions required to be made in

respect of Allowed Class 3.1 and Class 3.2 Claims.  Columbia intends to act as

Disbursing Agent for all remaining Classes of Claims. 

     F.   DELIVERY OF DISTRIBUTIONS; UNCLAIMED DISTRIBUTIONS

          1.   DELIVERY OF DISTRIBUTIONS ON UNCLASSIFIED CLAIMS AND CLAIMS IN
               CLASSES 1, 2, 4 AND 6 

     Distributions to each Holder of an Allowed Unclassified Claim, Class 1

Claim, Class 2 Claim, Class 4 Claim and Class 6 Claim shall be made (i) at the

address set forth on the proof of Claim or amendment thereto Filed by such

Holder, (ii) in lieu of






















                                      VI-30
<PAGE>   280
the address set forth in clause (i), at the address set forth in any written

notice of address change received by the Disbursing Agent after the Effective

Date, or (iii) at the address of such Holder reflected in the Schedule of

Liabilities if no proof of Claim has been Filed and the relevant Disbursing

Agent has not received a written notice of a change of address. 

          2.   DELIVERY OF DISTRIBUTIONS TO HOLDERS OF CLASSES 3.1 AND 3.2
               CLAIMS

               a.   RECORD DATE

     Distributions to Holders of Allowed Class 3.1 and 3.2 Claims will be made

by the Disbursing Agent at the direction of Reorganized Columbia.  The

Disbursing Agent shall make the distributions at the address maintained by the

designated transfer agents in accordance with the Recordation Order.

     In order to have distributions made in an orderly fashion, on the Record

Date the transfer ledgers or registers and any other records determining

ownership maintained by the designated transfer agents in accordance with the

Recordation Order will be closed, and for distribution purposes, there shall be

no further changes in the record Holders of any of the Borrowed Money

Instruments and the Borrowed Money Claim arising therefrom or in connection

therewith.

               b.   SURRENDER OF INSTRUMENTS

     Holders of the following Surrender Instruments must surrender them to the

entity indicated below in order to receive a distribution under the Columbia

Plan:





















                                      VI-31
<PAGE>   281
                                        Entity to Which
     Surrender Instrument                 Surrendered   
     --------------------               ---------------

     Auction Notes                      Columbia

     Bid Notes                          Columbia

     Debentures                         Indenture Trustee

     Notes issued pursuant              Bank Agent
     to the $500 Million Credit 
     Agreement (other than
     the Auction Notes) 

     Notes issued pursuant to           Bank Agent
     the $750 Million Credit 
     Agreement

Following the Confirmation Date but prior to the Effective Date, Holders of

Surrender Instruments will receive detailed instructions concerning the time,

place and method of such surrenders. 

     To the extent that a Holder is not the holder of record of a relevant

Surrender Instrument, such Holder must deliver to the specified entity to which

such Surrender Instrument must be surrendered, together with the relevant

Surrender Instrument, documents reasonably satisfactory to Columbia evidencing

succession of title from the record holder thereof.  In the event that any

Surrender Instrument which must be surrendered has been lost, destroyed, stolen

or mutilated, the Holder thereof may instead execute and deliver an affidavit of

loss and indemnity with respect thereto in form that is customarily utilized for

such purposes and that is reasonably satisfactory to Columbia, together with, if

Columbia so requests, a bond in






















                                      VI-32
<PAGE>   282
form and substance (including, without limitation, amount) reasonably

satisfactory to Columbia.

     Holders of Borrowed Money Claims not evidenced by Surrender Instruments

need not surrender any instruments.

               c.   CANCELLATION

     All Surrender Instruments shall be canceled and, as of the Effective Date,

all Borrowed Money Instruments, the $500 Million Credit Agreement, the $750

Million Credit Agreement, the 1961 Indenture, the Rate Swap Agreement, the

Commercial Paper Master Note representing the Commercial Paper, and any other

instrument or document evidencing any Claims in Class 3.1 or Class 3.2 shall be

terminated, null and void and of no further force and effect.

               d.   DISTRIBUTIONS OF CASH, NEW INDENTURE SECURITIES, NEW
                    PREFERRED STOCK AND DECS

     On the Effective Date, Reorganized Columbia shall deliver to the Disbursing

Agent (i) the Cash Consideration, if any, (ii) the cash required to pay Allowed

Class 3.1 Claims, (iii) the cash necessary to make payments required with

respect to fractional shares, odd lots and the issuance of New Indenture

Securities in integral multiples $1,000, (iv) one duly issued and authenticated

New Indenture Security for each Series intended to be issued under the Columbia

Plan, payable to the Disbursing Agent, (v) one duly issued certificate,

registered in

























                                      VI-33
<PAGE>   283
the name of the Disbursing Agent, for the number of shares of DECS to be issued

under the Columbia Plan to Holders of Class 3.2 Claims,  and (vi) one duly

issued certificate, registered in the name of the Disbursing Agent, for the

number of shares of New Preferred Stock to be issued under the Columbia Plan to

Holders of Class 3.2 Claims.  On the Effective Date, or from time to time

thereafter upon compliance with the provisions requiring the surrender of the

Surrender Instruments, the Disbursing Agent shall make all the appropriate

distributions in respect of Allowed Class 3.1 Claims and Allowed Class 3.2

Claims.  

     With respect to the Holders of Debentures and Medium Term Notes to which

the applicable Disbursing Agent has assumed responsibility for making

distributions, any New Indenture Securities, New Preferred Stock and DECS held

by such Disbursing Agent for distribution to such Holders may, to the extent the

Indenture Trustee for such Holders continues to have a valid lien on such

distributions for unpaid fees and expenses or other charges incurred by such

Indenture Trustee, not be distributed to such Holders until the unpaid fees and

expenses or other charges of the Indenture Trustee have been satisfied.

     The DECS and New Preferred Stock delivered to the Disbursing Agent on

behalf of the Take-Out Electors shall be held by the Disbursing Agent and (i) if

the Take-Out Offering which may be undertaken by Reorganized Columbia is

successfully completed, the Disbursing Agent shall transfer and deliver the

certificates representing such DECS and New Preferred Stock to Reorganized

Columbia, Reorganized Columbia shall deliver the cash representing the aggregate

Repurchase Price to the


















                                      VI-34
<PAGE>   284
Disbursing Agent and the Disbursing Agent shall distribute such cash to the

Take-Out Electors entitled thereto or (ii) if such public offering is not

successfully completed, and Reorganized Columbia does not exercise its right to

repurchase such DECS and New Preferred Stock using other cash sources, the

Disbursing Agent shall deliver such DECS and New Preferred Stock to the Take-Out

Electors entitled thereto.

               e.   CASH IN LIEU OF FRACTIONAL SHARES AND ODD LOTS; ROUNDING OF
                    NEW INDENTURE SECURITIES

     No fractional shares of New Preferred Stock or DECS shall be issued under

the Columbia Plan.  In lieu thereof, Reorganized Columbia will pay to any Person

entitled to receive any such fractional share cash in an amount equal to the

Liquidation Value of such fractional share as of the Effective Date.  

     Reorganized Columbia shall not issue to any Holder of an Allowed Class 3.2

Claim fewer than 100 shares of either New Preferred Stock or DECS.  In lieu

thereof, Reorganized Columbia will pay to the Person entitled to receive such

shares, cash in an amount equal to the Liquidation Value on the Effective Date

of such shares.

     New Indenture Securities shall be issued solely in denominations of $1,000

or integral multiples thereof.  Any Holder of an Allowed Class 3.2 Claim that,

but for such provision, would be entitled to receive a principal amount of any

Series of New Indenture Securities of less than $1,000 or not constituting an

integral multiple of $1,000 shall, in lieu thereof, be paid cash (i) in an

amount equal to the principal





















                                      VI-35
<PAGE>   285
amount of such New Indenture Securities, in the former case, or (ii) in an

amount equal to the excess of the principal amount of such New Indenture

Securities over the next lowest number that is $1,000 or an integral multiple of

$1,000, in the latter case.

     3.   UNCLAIMED DISTRIBUTIONS

     An Unclaimed Distribution shall be (A) any distribution made to the Holder

of an Allowed Claim pursuant to the Columbia Plan including, in the case of any

check or other instrument, the proceeds thereof, that (i) is returned to

Reorganized Columbia or the applicable Disbursing Agent as undeliverable or

because delivery thereof is not accepted, or (ii) in the case of a distribution

made in the form of a check, is not presented for payment within six months

after it is sent to the payee thereof and (B) any distribution to be made to the

Holders of an Allowed Claim pursuant to the Columbia Plan in respect of a

Surrender Instrument if such Surrender Instrument is not surrendered to the

appropriate Person or the provisions of the Columbia Plan with respect to the

surrender thereof are not otherwise complied with within six months after the

Effective Date.

     Any Unclaimed Distribution in the form of cash shall, until such time as

such Unclaimed Distribution becomes deliverable, be paid over by the Disbursing

Agent to Reorganized Columbia, which shall hold such cash and may commingle it

with its other funds.  Unclaimed Distributions in the form of New Indenture

Securities, New Preferred Stock or DECS shall be held by the Disbursing Agent. 

Reorganized Columbia shall pay and the Disbursing Agent




















                                      VI-36
<PAGE>   286
shall receive and hold any interest and dividends to be paid by Reorganized

Columbia on behalf of any Unclaimed Distributions in the form of New Indenture

Securities, New Preferred Stock or DECS.  

     Any Holder of an Allowed Claim that does not claim an Unclaimed

Distribution within five years after the Confirmation Date shall not participate

in any further distributions under the Plan and shall be forever barred from

asserting any such Claim against Reorganized Columbia or its property.  At the

end of such five year period, the Unclaimed Distributions consisting of New

Indenture Securities, New Preferred Stock, DECS and any dividends, interest and

other property received in exchange for or in respect of such New Indenture

Securities, New Preferred Stock or DECS shall be delivered by the Disbursing

Agent to Reorganized Columbia which shall retain the same as its property, free

of any restrictions, and may cancel any such New Indenture Securities, New

Preferred Stock or DECS.  Any cash held by the Disbursing Agent in respect of

such Claims shall be delivered by said Disbursing Agent to Reorganized Columbia

and any such cash previously delivered to and being held by Reorganized Columbia

shall be the property of Reorganized Columbia, free of any restrictions. 

Nothing contained in the Columbia Plan shall require any Disbursing Agent or

Reorganized Columbia to attempt to locate any Holder of an Allowed Claim other

than by reviewing its own or Reorganized Columbia's


























                                      VI-37
<PAGE>   287
records or the records maintained in accordance with the Recordation Order.

     The states' abandoned property laws are preempted when they are in conflict

with federal bankruptcy law.  Section 347(b) of the Bankruptcy Code provides

that "any security, money or other property remaining unclaimed at the

expiration of the time allowed in a case under Chapter 9, 11 or 12 of this title

for the presentation of a security or the performance of any other act as a plan

confirmed under section 943(b), 1129, 1173, or 1225 of this title, as the case

may be, becomes the property of the debtor or the entity acquiring the assets of

the debtor under the plan, as the case may be."  Accordingly, all Unclaimed

Distributions shall become property of Reorganized Columbia.

     4.   MEANS OF CASH PAYMENTS

     Cash payments made pursuant to the Columbia Plan shall be in United States

dollars by check drawn on a domestic bank selected by the Disbursing Agent

making such payment, or, at the option of such Disbursing Agent, by wire

transfer from a domestic bank; provided, however, that cash payments to foreign

creditors, if any, may be made, at the option of such Disbursing Agent, in such

funds and by such means as are necessary or customary in a particular foreign

jurisdiction.  All foreign currency costs and wire transfer costs incurred in

making distributions to any Holder of a Claim pursuant to the Columbia Plan

shall be for the account of such Holder.


























                                      VI-38
<PAGE>   288
     5.   SETOFFS

     Reorganized Columbia may setoff against any Allowed Claim and the

distributions to be made pursuant to the Columbia Plan on account of such Claim,

the claims, rights and causes of action of any nature that Columbia or

Reorganized Columbia may hold against the Holder of such Allowed Claim;

provided, however, that neither the failure to effect such a setoff nor the

allowance of any Claim under the Columbia Plan shall constitute a waiver or

release by Columbia or Reorganized Columbia of any such claim, right or cause of

action that Columbia or Reorganized Columbia may possess against such Holder.

     Pursuant to the Setoff Order, Morgan Guaranty Trust Company of New York

currently holds the Setoff Funds which, as of the Effective Date, Columbia

estimates will total approximately $2.8 million.  On the Effective Date, the

Morgan Guaranty Trust Company of New York shall deliver the Setoff Funds

(exclusive of interest earned and accrued thereon) to the Disbursing Agent which

shall distribute them to Holders of Allowed Class 3.1 Claims and Allowed Class

3.2 Claims that arise by virtue of the $500 Million Credit Agreement (other than

Auction Notes) and the $750 Million Credit Agreement in partial satisfaction of

their Claims.  The remaining amount of the Claims arising from the $500 Million

Credit Agreement and the $750 Million Credit Agreement, after taking into

account such distribution, shall be treated as a Class 3.2 Claim or, if the

amount of such Claim as
























                                      VI-39
<PAGE>   289
of the Petition Date as so reduced is not greater than $15,000, as a Class 3.1

Claim.  In accordance with the provisions of the Setoff Order, interest earned

and accrued on the Setoff Funds shall be distributed by Morgan Guaranty Trust

Company of New York to Columbia on the Effective Date.

     6.   CONTINUATION OF CERTAIN RETIREMENT, WORKERS' COMPENSATION AND LONG-
          TERM DISABILITY BENEFITS

     All employee and retiree benefit plans or programs in existence as of the

Petition Date (other than the LESOP) shall continue after the Effective Date.

     G.   CONTINUED CORPORATE EXISTENCE AND VESTING OF ASSETS IN REORGANIZED
          COLUMBIA

     Columbia shall continue to exist after the Effective Date as Reorganized

Columbia, a Delaware corporation, with all the powers of a corporation under

applicable law and without prejudice to any right to alter or terminate such

existence (whether by merger or otherwise) under Delaware state law, subject to

the terms and provisions of the Columbia Plan and the Confirmation Order. 

Except as otherwise provided in the Columbia Plan, on or after the Effective

Date, all property of the Columbia Estate, and any property acquired by Columbia

or Reorganized Columbia under any provisions of the Columbia Plan, shall vest in

Reorganized Columbia, free and clear of all Claims, liens, charges and other

encumbrances.  On and after the Effective Date, Reorganized Columbia may operate

its business and may use, acquire and dispose of property and compromise or

settle any claims against it without supervision or approval by
























                                      VI-40
<PAGE>   290
the Bankruptcy Court and free of any restrictions of the Bankruptcy Code or

Bankruptcy Rules, other than those restrictions expressly imposed by the

Columbia Plan and the Confirmation Order.  Reorganized Columbia may pay the

charges that it incurs on or after the Effective Date for professional fees,

disbursements, expenses or related support services without application to the

Bankruptcy Court.  

     H.   CORPORATE GOVERNANCE, DIRECTORS AND OFFICERS

          1.   CERTIFICATE OF INCORPORATION

     Upon the Effective Date, the certificate of incorporation of Reorganized

Columbia shall be amended and restated entirely to, among other things, provide

for the issuance of the New Preferred Stock and DECS and prohibit the issuance

of non-voting equity securities to the extent required by section 1123(a) of the

Bankruptcy Code.  See Exhibit A to the Columbia Plan for a copy of the proposed

amended and restated certificate of incorporation.  After the Effective Date,

Reorganized Columbia may amend its certificate of incorporation or by-laws as

permitted by the Delaware General Corporation Law.

          2.   DIRECTORS AND OFFICERS OF REORGANIZED COLUMBIA

     Those persons serving as the directors and officers of Columbia as of the

date hereof will, subject to changes in the ordinary course of business and

except as discussed in Section X.G.2.b, "Reorganized Columbia Gas - Changes in

Senior Management".
























                                      VI-41
<PAGE>   291
          3.   CORPORATE ACTION

     Upon the Effective Date, adoption by Reorganized Columbia of an amended and

restated certificate of incorporation and other matters contemplated by or

provided for under the Columbia Plan involving the corporate structure of

Columbia or Reorganized Columbia or corporate action to be taken by or required

of either Columbia or Reorganized Columbia shall be deemed to have occurred and

be effective and upon the filing of the amended and restated certificate of

incorporation as required by Delaware law, all actions required or contemplated

in order to consummate the Columbia Plan shall be authorized and approved in all

respects without any requirement of further action by stockholders or directors

of Columbia or Reorganized Columbia.

          4.   LESOP

     On the Effective Date, the LESOP shall be terminated and Columbia, in

accordance with the terms of the LESOP Trust, shall purchase the shares of

Columbia Common Stock held by the LESOP Trustee thereunder for cash at the most

recently available closing price for such shares.  Such cash purchase price

shall be delivered by Columbia to the LESOP Indenture Trustee, which shall

distribute such purchase price pro rata to the holders of the LESOP Debentures. 

Such cash purchase price shall be applied, first, to any post-petition interest

due on the Claims arising under the LESOP Guaranty and, thereafter, to the

Allowed amount of such Claims.  The remaining amount of the Claims
























                                      VI-42
<PAGE>   292
arising from the LESOP Guaranty, after taking into account such distribution,

shall be treated as a Class 3.2 Claim or, if the amount of such Claim as of the

Petition Date as so reduced is not greater than $15,000, as a Class 3.1 Claim.  

          5.   WAIVERS, RELEASES AND ABANDONMENT OF CLAIMS

     The claims alleged in the Derivative Action are assets of the Estate. 

Columbia's board of directors has appointed a Special Litigation Committee of

the Board to determine whether the Derivative Action should be dismissed.  Once

the Special Litigation Committee has completed its investigation and submitted

its determinations, which determinations shall be binding on the board, the

Columbia Plan and the Columbia Disclosure Statement shall be amended to describe

such determinations and proposed treatment of the Derivative Action.

     I.   BAR DATES

          1.   BAR DATE FOR OBJECTIONS TO NON-ADMINISTRATIVE CLAIMS

     Any non-Administrative Claim which was not Filed at least thirty days prior

to the date of the hearing on the Disclosure Statement may be objected to by

Columbia, Reorganized Columbia, the Columbia Creditors' Committee or the

Columbia Equityholders' Committee.  Any such objections must be made by the

later of (i) the Effective Date or (ii) the sixtieth day after a proof of Claim

with respect to such Claim has been Filed.  Any such Claim that has not been

objected to on or prior to such date shall be an Allowed Claim in the

appropriate Class. 

          2.   BAR DATES FOR PROFESSIONAL CLAIMS






















                                      VI-43
<PAGE>   293
     Professionals or other entities requesting compensation or reimbursement of

expenses for "substantial contribution" to the Reorganization Case shall File

and serve on Reorganized Columbia, the U.S. Trustee and the Fee Examiner an

application for final allowance of compensation and reimbursement of expenses no

later than the thirtieth day after the Effective Date.  Objections to such

applications must be Filed and served on Reorganized Columbia, the U.S. Trustee,

the Fee Examiner and the requesting party no later than the seventieth day after

the Effective Date.  Payment of such professional fees shall be subject to

approval by the Bankruptcy Court following a hearing.


     J.   REJECTION OF EXECUTORY CONTRACTS AND UNEXPIRED LEASES; 
          ADDITIONAL BAR DATES

          1.   GENERAL

     All executory contracts that have not been so expressly rejected shall be

assumed.  Exhibit E annexed to the Columbia Plan briefly describes all of

Columbia's executory contracts and states Columbia's intention with respect to

assumption or rejection thereto. 

          2.   TAX ALLOCATION AGREEMENT

     Under the Columbia Plan, Columbia will, subject to Bankruptcy Court

approval, assume the TAA on the Effective Date.  See Section V.F.4, "Approval of

Tax Sharing Procedures".

          3.   BAR DATE FOR REJECTION DAMAGES

     If the rejection of an executory contract or unexpired lease pursuant to

the Columbia Plan or the Confirmation Order gives rise to an Unsecured Claim or

Administrative Claim by the

















                                      VI-44
<PAGE>   294
other party or parties to such contract or lease, such Claim will be forever

barred and will not be enforceable against Columbia, Reorganized Columbia or its

successors, or the properties of any of them, unless a request for payment, with

respect to Administrative Claims, or a proof of Claim, with respect to other

Claims, is Filed and served on Reorganized Columbia within the later of (i) the

time period established by the Bankruptcy Court in its Final Order authorizing

such rejection or (ii) the thirtieth day after the Effective Date.  Objections

to any request for payment or proof of Claim shall be filed not later than the

seventieth day after the Effective Date.

          4.   EXECUTORY CONTRACTS AND UNEXPIRED LEASES ENTERED INTO AND OTHER
               OBLIGATIONS INCURRED AFTER THE PETITION DATE

     Executory contracts and unexpired leases entered into and other obligations

incurred by Columbia after the Petition Date (unless an order of the Bankruptcy

Court has been entered authorizing rejection of such contracts or leases) shall

survive and remain unaffected by the Columbia Plan or entry of the Confirmation

Order.


     K.   CONDITIONS PRECEDENT TO CONFIRMATION AND CONSUMMATION OF THE
          COLUMBIA PLAN

          1.   CONDITIONS TO CONFIRMATION

     The Bankruptcy Court shall not enter the Confirmation Order unless and

until each of the following conditions has been satisfied or, to the extent

permitted, duly waived by Columbia:























                                      VI-45
<PAGE>   295
     1.   The Bankruptcy Court has entered an order, pursuant to section 1129 of

the Bankruptcy Code, confirming the TCO Plan.

     2.   The Plan shall have been approved by the SEC under the HCA and the SEC

shall have approved all transactions contemplated by the TCO Plan which require

its approval.

     3.   There shall have been no material adverse change to Columbia's

business, properties, financial condition, results of operations or business

prospects between the Plan Mailing Date and the Confirmation Date.  

     4.   No material environmental liability Claim shall have been Filed by any

entity including, without limitation, any state or federal environmental or

regulatory agency, asserting actual or potential liability against Columbia,

other than Claims filed pursuant to consensual settlement agreements between

Columbia and such state or federal environmental or regulatory agency or other

governmental entity.

     5.   TCO and Columbia shall have received a ruling from the IRS, in form

and substance satisfactory to TCO and Columbia, to the effect that payments made

by TCO under the TCO Plan that are attributable to the breach, termination or

rejection of gas purchase contracts are deductible when paid by TCO for Federal

income tax purposes. 

     6.   The Columbia Plan shall not have been amended, modified, waived,

supplemented or withdrawn without the consent of Columbia, after consultation

with the Columbia Creditors' Committee and the Columbia Equityholders'

Committee.




















                                      VI-46
<PAGE>   296
     7.   Each of Moody's Investor's Service, Inc. and Standard & Poor's Ratings

Group shall have confirmed that each of Series of the New Indenture Securities,

upon its issuance in accordance with the Columbia Plan, shall be rated at

investment grade.

     8.   Qualifying Class 4 Claimants holding Securities Action Claims

entitling them to receive at least 75% of the Maximum Proof of Claim Amount have

accepted the Offer of Settlement.

          2.   CONDITIONS TO EFFECTIVE DATE

     The Columbia Plan shall not be consummated and the Effective Date shall not

occur unless and until each of the following conditions has been satisfied or,

to the extent permitted, duly waived by Columbia:

     1.   The Confirmation Order shall not have been vacated, reversed or

stayed.

     2.   The Bankruptcy Court shall have confirmed the TCO Plan and the order

with respect to such confirmation shall not have been vacated, reversed or

stayed.  The TCO Plan shall have become effective on terms consistent with the

Columbia Plan and without any amendments to which Columbia shall not have

consented.

     3.   The order of the SEC approving, under the HCA, the Plan and all

transactions contemplated by the TCO Plan which require its approval shall not

have been vacated, reversed or stayed.

     4.   There shall have been no material adverse change to Columbia's

business, properties, financial condition, results of




















                                      VI-47
<PAGE>   297
operations or business prospects between the Confirmation Date and the Effective

Date.

     5.   Any condition to Confirmation that is waived by Columbia and that, at

the time of such waiver, Columbia elects to have become a condition to the

consummation of the Columbia Plan, shall have been satisfied or, if waivable,

waived.

     6.   Reorganized Columbia shall have entered into the Working Capital

Facility, the Term Loan Facility and the New Indenture, each of such agreements

shall be in effect and the full amount of each such Facility shall be available

for borrowing by Columbia.

     7.   The Stipulation of Dismissal With prejudice shall have been filed with

the United States District Court for the District of Delaware.

     8.   Neither Moody's Investors Service, Inc. nor Standard & Poor's Rating

Group shall have withdrawn or changed its previously delivered confirmation that

each Series of New Indenture Securities, upon its issuance in accordance with

the Columbia Plan, shall be rated investment grade; and neither of those rating

agencies shall have put Columbia on "credit watch" with negative implications.

     9.   The Effective Date shall occur on or before June 28, 1996.

          3.   WAIVER OF CONDITIONS TO CONFIRMATION OR EFFECTIVE
               DATE

     Each of the conditions to Confirmation or to the Effective Date may be

waived in whole or in part by Columbia at any time























                                      VI-48
<PAGE>   298
in its discretion, provided that (i) the condition to Confirmation concerning

authorization or approval under the HCA may be waived only if Columbia elects to

have such condition become a condition to the Effective Date and may not be

waived as a condition to the Effective Date, (ii) the conditions to Confirmation

concerning material environmental liability Claims and a ruling from the IRS may

be waived only if Columbia elects to have the conditions waived become

conditions to the Effective Date, (iii) the condition concerning the last date

by which the Effective Date must occur and the condition to the Effective Date

concerning the investment grade rating of each Series of New Indenture

Securities may only be waived by Columbia if consented to by the Columbia

Equityholders' Committee and the Columbia Creditors' Committee and (iv) none of

the conditions to Confirmation and the Effective Date may be waived without the

Columbia Equityholders' Committee and the Columbia Creditors' Committee having

been given notice and an opportunity to be heard.  To be effective, any such

waiver and consent must be in writing and Filed.  If the condition to

Confirmation concerning a ruling from the IRS has not been satisfied by December

15, 1995, then Columbia and TCO shall, by December 31, 1995, either (a) waive

receipt of such ruling as a condition to Confirmation or (b) the settlements

with TCO's producer-creditors shall be null and void.  The failure to satisfy

any condition may be asserted by Columbia regardless of the circumstances giving

rise to such failure (including any action or inaction by Columbia or
























                                      VI-49
<PAGE>   299
TCO).  Columbia's failure to exercise any of the foregoing rights shall not be

deemed a waiver of any other rights, and each such right shall be deemed an

ongoing right, which may be asserted at any time.

          4.   EFFECT OF NON-OCCURRENCE OF CONDITIONS TO EFFECTIVE DATE

     Each of the conditions to the Effective Date must be satisfied or duly

waived by Columbia or other appropriate parties pursuant to the Columbia Plan by

June 28, 1996.  If the Confirmation Order is vacated, the Columbia Plan,

including the discharge of Claims pursuant to section 1141 of the Bankruptcy

Code, and the assumptions or rejections of executory contracts or unexpired

leases as described in Exhibit E annexed to the Columbia Plan, shall be null and

void in all respects.  In the event the Confirmation Order is so vacated,

nothing contained in the Columbia Plan shall (i) constitute a waiver or release

of any Claim by or against, or any Interests in, TCO or Columbia, (ii) prejudice

in any manner the rights of TCO or Columbia or (iii) constitute an admission

against TCO or Columbia.

          5.   WORKING CAPITAL FACILITY

     A condition to the Columbia Plan's Effective Date is  Reorganized

Columbia's entry into the Working Capital Facility.  The Working Capital

Facility is discussed in Section X.G.2, "Revolving Credit Facility".

          6.   TERM LOAN FACILITY

     A further condition to the Columbia Plan's Effective Date is Reorganized

Columbia's entry into the Term Loan Facility. 






















                                      VI-50
<PAGE>   300
The Term Loan Facility is discussed in Section X.G.1, "Term Credit Facility". 

     L.   MISCELLANEOUS

          1.   DISSOLUTION OF COMMITTEES

     On the Effective Date, the Columbia Creditors' Committee and the Columbia

Equityholders' Committee will be dissolved and the members of those Committees

as such will be released and discharged from all rights and duties arising from

or related to the Reorganization Case.  The Professionals retained by the

Columbia Creditors' Committee and the Columbia Equityholders' Committee and the

members thereof will not be entitled to compensation or reimbursement of

expenses for any services rendered after the Effective Date, except for services

rendered and expenses incurred in connection with any applications for allowance

of compensation and reimbursement of expenses pending on the Effective Date or

filed and served after the Effective Date. 


          2.   DISCHARGE, TERMINATION AND INJUNCTION

     Section X of the Columbia Plan sets forth provisions releasing and

discharging Columbia from Claims and other obligations arising prior to the

Confirmation Date and enjoining the prosection of such Claims and obligations. 

Section V.D of the Columbia Plan provides for the release of all security

interests in property of Columbia, except as otherwise provided in the Columbia

Plan.
























                                      VI-51
<PAGE>   301
          3.   JURISDICTION OF THE BANKRUPTCY COURT

     Section XI of the Columbia Plan specifies certain matters with respect to

which the Bankruptcy Court will retain jurisdiction after the Effective Date to

the extent legally permissible.  In particular, the Bankruptcy Court's retention

of jurisdiction will include, without limitation, the resolution of Claims and

any disputes arising over the distribution of assets under the Columbia Plan.  

          4.   LIMITATION OF LIABILITY

     The Columbia Plan limits the liability of Columbia, Reorganized Columbia,

their affiliates and their respective directors, officers, employees, agents,

representatives and professionals (acting in such capacity), and the Columbia

Creditors' Committee, the Columbia Equityholders' Committee and their respective

members and professionals (acting in such capacity), and their respective heirs,

executors, administrators, successors and assigns, with respect to their actions

or omissions in connection with the Reorganization Case, the Columbia Plan, this

Disclosure Statement and related transactions.  However, this limitation of

liability does not extend to any act or omission which is determined to have

constituted gross negligence or willful misconduct.

          5.   MODIFICATION OF THE COLUMBIA PLAN

     Subject to the restrictions on modifications set forth in section 1127 of

the Bankruptcy Code, Columbia reserves the right


























                                      VI-52
<PAGE>   302
to alter, amend or modify the Columbia Plan before its substantial consummation.

          6.   REVOCATION OF THE COLUMBIA PLAN

     Columbia reserves the right to revoke or withdraw the Columbia Plan prior

to the Confirmation Date.  If Columbia revokes or withdraws the Columbia Plan,

or if Confirmation does not occur, then the Columbia Plan will be null and void

in all respects, and nothing contained in the Columbia Plan will (i) constitute

a waiver or release of any Claims by or against, or any Interests in, Columbia

or TCO (ii) prejudice in any manner the rights of Columbia or TCO or (iii)

constitute an admission against Columbia or TCO.

          7.   SEVERABILITY OF COLUMBIA PLAN PROVISIONS

     If, at or prior to Confirmation of the Columbia Plan, any term or provision

of the Columbia Plan is held by the Bankruptcy Court to be invalid, void or

unenforceable, the Bankruptcy Court will have the power to alter and interpret

such term or provision to make it valid or enforceable to the maximum extent

practicable, consistent with the original purpose of the term or provision held

to be invalid, void or unenforceable, and such term or provision shall then be

applicable as altered or interpreted.  In the event of any such holding,

alteration or interpretation, the remainder of the terms and provisions of the

Columbia Plan may, at Columbia's option, remain in full force and effect and not

be deemed affected, impaired or invalidated by such holding, alteration or

interpretation.  However, 
























                                      VI-53
<PAGE>   303
Columbia reserves the right not to proceed to Confirmation or consummation of

the Columbia Plan if any such ruling occurs.  The Confirmation Order will

constitute a judicial determination and shall provide that each term and

provision of the Columbia Plan, as it may have been altered or interpreted in

accordance with the foregoing, is valid and enforceable pursuant to its terms.

          8.   SUCCESSORS AND ASSIGNS

     The rights, benefits and obligations of any entity named or referred to in

the Columbia Plan will be binding on, and will inure to the benefit of, any

heir, executor, administrator, successor or assign of such entity.
















































                                      VI-54
<PAGE>   304
                                
VII. RISK FACTORS

     The following is a summary of certain material risks associated with the

Columbia Plan and the securities to be issued, or retained by existing holders,

pursuant to that Plan.  Each Creditor entitled to vote on the Columbia Plan and

each Stockholder should carefully consider the risk factors enumerated or

referred to below, as well as all the information contained in this Disclosure

Statement, including the exhibits hereto, in determining whether to vote to

accept or reject the Columbia Plan.

     A.   CONDITIONAL NATURE OF THE PLAN

     There are a number of significant conditions to the confirmation and

effectiveness of the Columbia Plan.  Those conditions include, among other

things, the conditions that (i) the TCO Plan, the confirmation and effectiveness

of which is also subject to many significant conditions, shall have been

confirmed by an order of the Bankruptcy Court and such order shall not have been

vacated, reversed or stayed; (ii) the Columbia Plan shall have been approved by

the SEC under the HCA and the SEC shall have approved all transactions

contemplated by the TCO Plan which require its approval; and the order embodying

those approvals shall not have been vacated, reversed or stayed; (iii) there

shall have been no material adverse change to Columbia's business, properties,

financial condition, results of operations or business prospects between the

date of mailing of










                                     VII-1
<PAGE>   305
the Columbia Plan to Columbia Creditors and Interest holders and the Effective

Date; (iv) TCO and Columbia shall have received a ruling from the IRS, in form

and substance satisfactory to TCO and Columbia, to the effect that payments made

by TCO under the TCO Plan that are attributable to the breach, termination or

rejection of gas purchase contracts are deductible by TCO for federal income tax

purposes, provided, that, if such ruling has not been received by December 15,

1995, then TCO and Columbia must, by December 31, 1995, (a) either waive the

receipt of such ruling as a condition to Confirmation or the Effective Date, as

appropriate or (b) all settlements of Producers' Claims shall be null and void;

(v) Moody's Investors Service, Inc. and Standard & Poor's Ratings Group shall

have confirmed that the New Indenture Securities, upon their issuance, will be

rated at least investment grade; (vi) holders of Securities Actions Claims

representing at least 75% in value of the Maximum Proof of Claim Amount (as

defined in Section VI.A.2.e) shall have accepted the Offer of Settlement

proposed in the Columbia Plan; (vii) a stipulation of dismissal with prejudice

of the Intercompany Claims Litigation, conditioned only upon the completion of

payment by Reorgnized TCO of all distributions payable on the effective date of

the TCO Plan, shall have been filed with the United States District Court for

the District of Delaware; and (viii) the Effective Date shall have occurred on

or before June 28, 1996.  For a complete description of all of


























                                      VII-2
<PAGE>   306
the conditions to the confirmation and the effectiveness of the Columbia Plan,

see Section VI.K, "Conditions Precedent to Confirmation and Consummation of the

Columbia Plan".  Each of the conditions to effectiveness of the Columbia Plan

may be waived by Columbia after its Equityholders' and Creditors' Committees

having been given proper notice thereof and an opportunity to be heard, provided

that the consent of both those Committees is required to waive the conditions

described in clauses (v) and (vii) above.

     While Columbia believes that each of the conditions to the confirmation and

effectiveness of the Columbia Plan (and to the confirmation and effectiveness of

the TCO Plan) should be capable of being satisfied (or, if appropriate, amended

or waived) by June 28, 1996, satisfaction of many of those conditions is beyond

the control of Columbia.  Accordingly, no assurances can the given that the

Columbia Plan will be confirmed and become effective or that confirmation and

effectiveness will occur by any particular date.  In the event that the

Effective Date does not occur by June 28, 1996, or shortly thereafter, the terms

of TCO's settlement with its Customers and its agreement in principle with

certain Producers (which are subject to termination by the Creditors that are

parties thereto if the Effective Date does not occur by that date), as well as

changes in the securities and other financial markets, or in Columbia's

financial condition and results of


























                                      VII-3
<PAGE>   307
operations, may materially affect the feasibility, timing or other elements of

the Columbia Plan.  Further, TCO has agreed to make additional distributions to

the Initial Accepting Producers if the effective date of the TCO Plan does not

occur by January 31, 1994. 

     B.   LACK OF ESTABLISHED MARKET FOR THE NEW INDENTURE SECURITIES, DECS AND
          NEW PREFERRED STOCK; VOLATILITY

     There is no existing market for the New Indenture Securities, the DECs or

the New Preferred Stock.  The New Indenture Securities will not be listed on any

exchange.  In addition, there can be no assurance that an active market therefor

will develop or as to the degree of price volatility in any such particular

market.  Accordingly, no assurance can be given that a holder of the New

Indenture Securities will be able to sell such securities in the future or as to

the price at which such a sale may occur.  If such markets were to exist, such

securities could trade at prices higher or lower than par, depending upon many

factors, including prevailing interest rates, markets for similar securities,

industry conditions and the performance of, and investor expectations for,

Reorganized Columbia.

     It is currently contemplated that the DECs and the New Preferred Stock will

be traded on the New York Stock Exchange.  However, the DECS and the New

Preferred Stock will be issued to certain pre-petition Creditors, some of whom

may prefer to liquidate their investment rather than to hold it on a long-term

























                                      VII-4
<PAGE>   308
basis.  Accordingly, it is anticipated that the market for the DECs and the New

Preferred Stock may be volatile, at least for an initial period after the

Effective Date.  Further, an investment in New Preferred Stock and DECS will be

less liquid than might otherwise be expected if the holders of a significant

amount of Class 3.2 Claims elect the Cash-Out Election and Columbia repurchases

the equity securities issued to those holders pursuant to the Columbia Plan.

     While the objective of the Pricing Formulae pursuant to which the New

Indenture Securities, DECS and New Preferred Stock to be issued in respect of

the Class 3.2 Borrowed Money Claims is for the New Indenture Securities, upon

their issuance on the date, to trade at par, and for the DECS and New Preferred

Stock, upon their issuance on that Effective Date, to trade at their face value,

it is not possible to determine in advance the prices at which the New Indenture

Securities, DECS and New Preferred Stock will actually trade in the market.  No

assurances can be given as to the market prices that will prevail following the

Effective Date.  See Section X.D, "Reorganized Columbia -- Pricing of

Securities".

     C.   PROJECTIONS

     The financial projections included in this Disclosure Statement are

dependent upon the successful implementation of Columbia's business plan and the

reliability of the other assumptions contained therein.  See Section X.B,

"Reorganized
























                                      VII-5
<PAGE>   309
Columbia -- Financial Projections; Recapitalization".  Those projections reflect

numerous assumptions, including confirmation and consummation of the Columbia

Plan in accordance with its terms, the anticipated future performance of

Columbia, industry performance, general business and economic conditions and

other matters, including, without limitation, future gas prices, most of which

are beyond the control of Columbia.  In addition, unanticipated events and

circumstances occurring subsequent to the preparation of the projections may

affect the actual financial results of Columbia.  Therefore, the actual results

achieved throughout the periods covered by the projections will vary from the

projected results.  These variations may be material.  See Section X.B,

"Reorganized Columbia -- Financial Projections; Recapitalization".

     D.   BUSINESS FACTORS AND COMPETITIVE CONDITIONS

     The rate-regulated and nonregulated markets in which Columbia conducts

business continue to evolve.  These changes and trends are discussed in

Columbia's Annual Report which is attached hereto as Exhibit 2.  Most notably,

consumers are being offered additional choices with regard to how and from whom

they purchase services.  This increasing capability of customers to choose

provides both opportunities and risks to Columbia.  The risk is one of

increasing gas-on-gas and gas versus inter-fuel competition.  In addition,

Columbia, just like any other business entity, is affected by macroeconomic

factors such as
























                                      VII-6
<PAGE>   310
the general level of economic activity, interest and inflation rates.

     E.   LIABILITIES ASSUMED BY COLUMBIA

     Columbia will assume certain liabilities pursuant to its Plan, including

obligations, if any, to indemnify its officers, directors and agents and the

officers, directors, employees and agents of its subsidiaries, including TCO,

and liabilities that may arise from continuation of the Securities Litigation by

holders of Securities Action Claims that do not accept the offer to settle that

litigation proposed in the Columbia Plan.  Columbia does not expect that either

such category of liabilities will result in significant costs to Columbia. 

Columbia believes that it has meritorious defenses to the allegations made by

the plaintiffs in the Securities Litigation.  Also, Columbia expects that a

significant portion of any indemnification obligations it might have to officers

and directors would be covered by the insurance policies maintained by Columbia

for that purpose.  Nonetheless, no assurances can be given as to the outcome of

the Securities Litigation, as to the magnitude of any indemnification

obligations Columbia may have to officers, directors, employees and agents of

Columbia and its subsidiaries or as to the availability of insurance proceeds to

fulfill such obligations.






























                                      VII-7
<PAGE>   311
     F.   UNCERTAINTIES ASSOCIATED WITH THE TCO PLAN

     The Columbia Omnibus Settlement embodied in the Plans is expected to

facilitate and expedite the emergence of both Columbia and TCO from Chapter 11

prior to the resolution of certain Claims against TCO, including those of

dissenting Producers and Customers.  As a result, however, the total amount

distributable under the TCO Plan, and guaranteed by Columbia, to dissenting

Producers and Customers and certain other Creditors may not be known until

several years after the Effective Date and such amount may be substantial.  TCO

and Columbia have reserved the right to pay certain excess amounts to dissenting

Producers in Common Stock of Columbia or other property, in each case having a

fair market value on the distribution date equal to the required payment.

     As described in Section IV.E. under the caption "The Columbia Omnibus

Settlement", Columbia has agreed pursuant to the Columbia Customer Guaranty, to

guaranty the payment of distributions to accepting Customers and to guaranty the

financial integrity of the Customer Settlement.  Based on the status of

discussions between TCO and its Customer-creditors, Columbia reasonably believes

that (a) the Customer Settlement Proposal should be accepted by substantially

all TCO's Customers and should be feasible to effectuate and (b) the liability

to dissenting Customers, if any, should not be material.




























                                      VII-8
<PAGE>   312
     Substantial recoveries by dissenting Producers, dissenting Customers and

other non-settling Creditors of TCO, however, the level of which is uncertain at

this time, could result in a material liability, which could in turn impair

shareholder value and have an adverse effect on Columbia's operating results.

     G.   ENVIRONMENTAL LIABILITIES

     Columbia's subsidiaries are subject to extensive federal, state and local

laws and regulations relating to environmental matters.  Moreover, pursuant to

the TCO Plan,  TCO will assume environmental obligations to governmental

agencies, including obligations to the Environmental Protection Agency (the

"EPA") embodied in an agreement approved by the Bankruptcy Court in November

1994 and obligations under agreements reached with two state environmental

agencies concerning TCO's environmental remediation programs that also were

approved by the Bankruptcy Court.

     The eventual total cost of full future environmental compliance for the

System is difficult to estimate due to, among other things: (1) the possibility

of as yet unknown contamination, (2) the possible effect of future legislation

and new environmental agency rules, (3) the possibility of future litigation,

(4) the possibility of future designations as a potential responsible party by

the EPA and the difficulty of determining liability, if any, in proportion to

other responsible parties, (5) possible insurance and rate recoveries


























                                      VII-9
<PAGE>   313
and (6) the effect of possible technological changes relating to future

remediation.  However, reserves have been established based on information

currently available which resulted in a total recorded net liability of $146.7

million for the System at December 31, 1994, which includes the low end of a

range for certain expenditures for the transmission segment.  As new issues are

identified, additional liabilities will be recorded.

     It is Columbia's continued intent to address environmental issues in

cooperation with regulatory authorities in such a manner as to achieve mutually

acceptable compliance plans.  However, there can be no assurance that fines and

penalties will not be incurred.

     Columbia expects most environmental assessment and remediation costs to be

recoverable through rates.  Although significant charges to earnings could be

required prior to rate recovery, Columbia does not believe that environmental

expenditures should have a material adverse effect on its financial position,

based on known facts, existing laws and regulations and the period over which

expenditures are required.

     The foregoing notwithstanding, no assurances can be given as to the total

cost of full future environmental compliance for the System or as to whether

reserves established therefor will be sufficient.




























                                     VII-10
<PAGE>   314
     H.   CASH-OUT ELECTION

     In order to accommodate holders of Class 3.2 Claims who desire to dispose

of the DECS and New Preferred Stock that will be distributed to them pursuant to

the Columbia Plan, Columbia has offered the Cash-Out Election.  As more fully

described in Section VI.A.2.d, under the caption "Class 3.2 - Borrowed Money

Claims", if the Take-Out Offering is consummated or Columbia otherwise elects, a

holder of a Class 3.2 Claim who elects the Cash-Out Election will be entitled to

have Columbia repurchase the DECS and New Preferred Stock issued to such holder

on the Effective Date pursuant to the Columbia Plan at a price equal to the face

amount of those securities minus underwriting commissions and discounts.  The

obligation of Columbia to so purchase DECS and New Preferred Stock is subject to

the conditions that (i) holders of Class 3.2 Claims that will receive on the

Effective Date DECS and New Preferred Stock having an aggregate face amount of

not less than $200 million shall have elected the Cash-Out Election and (ii)

Columbia shall be able to consummate the Take-Out Offering, on terms

satisfactory to it, within one hundred eighty (180) days of the Effective Date.

     Although Columbia will undertake in good faith to effectuate the Take-Out

Offering within one hundred eighty days of the Effective Date, no assurances can

be given that Columbia will be able to complete that offering on terms

acceptable to


























                                     VII-11
<PAGE>   315
it.  If holders of a sufficient amount of Class 3.2 Claims fail to elect the

Cash-Out Election or Columbia is not able to complete the Take-Out Offering on

acceptable terms and does not otherwise elect to repurchase DECS and New

Preferred Stock issued to Creditors making the Cash-Out Election, holders of

Class 3.2 Claims who wish to dispose of the equity securities distributed to

them under the Columbia Plan will be forced to make such dispositions in the

open market.

     I.   HOLDING COMPANY STRUCTURE

     Columbia will continue to be structured as a holding company, substantially

all of the operations of which will be conducted through subsidiaries.  As such,

Columbia will rely principally on dividends and payment of principal and

interest in intercompany debt from its subsidiaries for the funds necessary for,

among other things, the payment of principal of and interest on the New

Indenture Securities.  In addition, any right of the holders of the New

Indenture Securities, DECs and the New Preferred Stock or Common Stock to

participate in the assets of any subsidiary upon such subsidiary's liquidation

or recapitalization will be effectively subordinated to the claims of such

subsidiary's creditors and preferred stockholders (if any), except to the extent

that Columbia is itself recognized as a creditor of such subsidiary.  See

"Description of Securities to be Issued Pursuant to The Plan--Indenture

Securities" in Exhibit 4 to this Disclosure Statement. 
























                                     VII-12
<PAGE>   316

VIII.     FEDERAL INCOME TAX CONSEQUENCES OF THE PLAN

     The following discussion is a summary of certain significant federal income

tax consequences of the Columbia Plan to Columbia and to the holders of Claims

and Interests and is based upon laws, regulations, rulings and decisions now in

effect, all of which are subject to change, possibly with retroactive effect. 

The federal income tax consequences to the holders of Claims may vary based on

the particular circumstances of each holder, and this summary does not address

aspects of federal income taxation applicable to holders that are subject to

special treatment for federal income tax purposes, including, but not limited

to, financial institutions, tax exempt entities, insurance companies and foreign

persons.  Moreover, the federal income tax consequences of certain aspects of

the Columbia Plan are uncertain due to a lack of definitive legal authority.  No

ruling has been obtained or will be requested from the IRS with respect to any

of the federal income tax aspects of the Columbia Plan (other than the

deductibility of certain payments made by TCO under the TCO Plan) and no opinion

of counsel has been obtained by Columbia with respect thereto.  Nor does this

summary address, or has any opinion of counsel been obtained, with respect to

any of the resulting state or local income tax consequences.  Each holder of a

Claim is therefore strongly urged to consult with its own tax advisor regarding

the federal, state and local income and other tax consequences to it of the

Columbia Plan.













                                     VIII-1
<PAGE>   317
     A.   TAX CONSEQUENCES TO COLUMBIA

          1.   GENERAL

     Columbia and its subsidiaries, including TCO, file a consolidated income

tax return under the provisions of Sections 1502 and 1504 of the Internal

Revenue Code of 1986, as amended (the "Code").  Treasury Regulations provide

that Columbia, as parent of the consolidated group, is the group's agent for

purposes of filing the group's federal income tax returns, paying the tax due,

and in general for dealing with the Service.  In addition, Treasury Regulations

provide that every member of the consolidated group is jointly and severally

liable for any tax incurred during the time that such member joined in the

filing of the consolidated return.  

          2.   DISCHARGE OF INDEBTEDNESS

     Under the Code, a taxpayer generally must include in gross income the

amount of any cancellation of indebtedness income ("COD income") which is

realized during the taxable year.  COD income generally equals the difference

between the amount of the taxpayer's indebtedness outstanding (as measured by

the greater of the amount of the Allowed Claim or the amount, if any, claimed as

a tax deduction with respect to such indebtedness) and the value of the

consideration exchanged therefor.  Since the Columbia Plan provides for the

payment in full, or assumption by Columbia, of all Allowed Claims (plus accrued

interest thereon), Columbia will not realize any COD income as a result of the

Columbia Plan.






















                                     VIII-2
<PAGE>   318
          3.   DEDUCTIBILITY OF PLAN PAYMENTS

     Columbia intends to deduct, for federal income tax purposes, all payments

of accrued interest under the Plan to the extent they exceed the amounts

previously deducted on its federal income tax returns.  Columbia also intends to

deduct such other payments made under the Columbia Plan as it determines can be

deducted under applicable federal income tax laws.  There is no assurance that

the IRS may not attempt to challenge, and may not succeed in challenging, any

deductions claimed by Columbia as a result of the Columbia Plan.

     B.   TAX CONSEQUENCES TO HOLDERS OF CLAIMS AND INTERESTS

          1.   TRADE CREDITORS AND OTHERS RECEIVING ONLY CASH

     A holder that receives only cash pursuant to the Columbia Plan will

generally be required to recognize income, gain or loss equal to the difference

between the holder's basis in the Claim and the amount of consideration

allocable thereto (other than consideration allocable to accrued interest, as

discussed in Section 5.a below).  The character of any recognized gain or loss

will depend upon the status of the holder, the nature of the claim in its hands,

and its holding period.

          2.   CREDITORS WHOSE CLAIMS ARE ASSUMED

     Holders whose claims are assumed by Reorganized Columbia generally should

not recognize income or loss upon the assumption of their Claims under the

Columbia Plan.  Taxable income may be recognized, however, if such holders

receive or are considered to receive interest, as discussed in Section 5.a

below, damages or




















                                     VIII-3
<PAGE>   319
other income in connection with the assumption, or if the assumption is

considered to involve a modification of the Claim for tax purposes.

          3.   HOLDERS OF CLASS 3.2 CLAIMS

               a.   GENERAL

     The federal income tax consequences of the Columbia Plan to holders of

Class 3.2 Claims will depend in large part on whether the exchange of a Class

3.2 Claim for Cash Consideration, New Indenture Securities, shares of Preferred

Stock, and DECS will be treated, in whole or in part, as a "recapitalization" of

Columbia within the meaning of Code Section 368(a)(1)(E).  If the exchanges

contemplated by the Plan are made pursuant to such a recapitalization, then an

exchanging holder generally will not recognize gain or loss for income tax

purposes (except to the extent of any "boot" and any consideration attributable

to accrued but unpaid interest, as further described in paragraph 5.a below). 

If an exchange is not made pursuant to a recapitalization, then an exchanging

holder will recognize gain or loss on such exchange.

     For purposes of this discussion, a holder who makes the Cash-Out Election

for shares of Preferred Stock and DECS should be deemed, and is assumed, to have

received those shares under the Plan and to have disposed of them in an

independent redemption transaction.  See "Disposition of Preferred Stock and

DECS Pursuant to Cash-Out Election" in Section 5.g below.  This discussion

further assumes that each holder of a Class 3.2 Claim
























                                     VIII-4
<PAGE>   320
holds the Claim, and will hold any New Indenture Securities, Preferred Stock or

DECS received under the Columbia Plan, as capital assets under Code Section

1221.

     In order for an exchange contemplated by the Plan to constitute a tax-free

recapitalization, the Claim exchanged by a holder must be a "security" for

federal income tax purposes, and the holder must receive stock and/or

"securities" in exchange.  The term "security" is not defined in the Code or the

regulations issued thereunder, and has not been clearly defined by court

decisions.  In general, a debt instrument constitutes a "security" if it

represents a participating, continuing interest in the issuer, rather than

merely the right to a cash payment. Thus, the term of the debt instrument is

usually regarded as a significant factor in determining whether it is a

security.  The IRS has ruled that a debt instrument with a maturity of ten years

or more is treated as a security.  However, under the case law, debt instruments

with maturities ranging between five and ten years are often held to be

securities.  

     For purposes of this discussion, it is assumed that the Debentures and the

Medium Term Notes constitute "securities" within the meaning of the provisions

of the Code governing reorganizations, but that all other Class 3.2 Claims

("Other Class 3.2 Claims") do not.  It is also assumed that all New Indenture

Securities constitute "securities".  However, the IRS may contend that certain

issues of New Indenture Securities, particularly those having a maturity of five

or possibly even




















                                     VIII-5
<PAGE>   321
seven years, may not constitute "securities".  If any issue of New Indenture

Securities were not treated as "securities", they would be treated as "boot" in

the manner described immediately below. 

          b.   TAX CONSEQUENCES OF THE EXCHANGE

     Exchange of Debentures or Medium Term Notes.  The exchange of the

Debentures or Medium Term Notes for Cash Consideration, New Indenture

Securities, Preferred Stock and DECS should be treated as a recapitalization

within the meaning of Code Section 368(a)(1)(E).  If the exchange is treated in

that manner, the federal income tax consequences to the holders of the

Debentures and Medium Term Notes (other than holders who receive only cash in

lieu of partial or fractional interests in the New Indenture Securities,

Preferred Stock and DECS, and not including amounts received in respect of Class

4 Claims, as discussed in Section 4 below) would be as follows: 

          (i)  Subject to the discussion below as to accrued but unpaid

interest, a holder would not recognize loss on the exchange, but would recognize

gain to the extent of the lesser of (a) the amount of gain realized from the

exchange and (b) the sum of the Cash Consideration and the excess, if any, of

the principal amount of the New Indenture Securities received over the principal

amount of the portion of the Claim that the holder is deemed to have exchanged

therefor (such Cash Consideration and excess principal amount being hereinafter

referred to as "boot").  The amount of gain realized, if any, would be equal to

the excess






















                                     VIII-6
<PAGE>   322
of (a) the sum of the Cash Consideration, the issue price of the New Indenture

Securities, and the fair market value of the Preferred Stock and DECS received,

over (b) such holder's adjusted tax basis in the Debentures or Medium Term Notes

surrendered in the exchange. 

          (ii) Subject to the discussion below as to accrued market discount,

any such gain recognized on the exchange would be capital gain, and such capital

gain would be long-term capital gain if such holder held the Debentures or

Medium Term Notes for more than one year as of the Effective Date.  

          (iii) Except for the consideration treated as received in exchange for

accrued but unpaid interest as discussed below: (a) a holder should have an

aggregate tax basis in the New Indenture Securities, Preferred Stock and DECS

equal to such holder's adjusted tax basis in the Debentures or Medium Term Notes

exchanged therefor, reduced by the amount of any boot received and increased by

any gain recognized on the exchange, and (b) the holding period of the New

Indenture Securities, Preferred Stock and DECS should include the holding period

of the Debentures or Medium Term Notes.  The holding period for any boot

received should commence on the day immediately following the Effective Date. 

          (iv) A holder receiving cash in lieu of fractional, partial or de

minimis interests in New Indenture Securities, Preferred Stock or DECS will be

treated as having received such New Indenture Securities, Preferred Stock or

DECS and having
























                                     VIII-7
<PAGE>   323
exchanged them for cash in a transaction which, in the case of the New Indenture

Securities, would constitute a retirement of such New Indenture Securities and,

in the case of the Preferred Stock and DECS, would be a transaction subject to

Section 302 of the Code and related provisions.  Any such exchange should

generally result in capital gain or loss measured by the difference between the

cash received for the fractional, partial or de minimis interest and the

holder's adjusted tax basis for such interest.

     Exchange of Other Class 3.2 Claims.  Based on the assumptions set forth

above, the exchange by holders of Other Class 3.2 Claims for their respective

share of the Cash, New Indenture Securities, Preferred Stock and DECS would be

treated as a taxable exchange under Code Section 1001.  If the exchange were

treated in that manner, then the federal income tax consequences to the holders

of such claims would be as follows: 

          (i) Subject to the discussion below as to accrued but unpaid interest,

a holder would recognize gain or loss on the exchange in an amount equal to the

difference between (a) the sum of the Cash Consideration, the issue price of the

New Indenture Securities and the fair market value of the Preferred Stock and

DECS as of the Effective Date, and (b) such holder's adjusted tax basis in its

Other Class 3.2 Claim.

          (ii) Subject to the discussion below as to accrued market discount,

any such gain or loss should be capital gain or loss, and such capital gain or

loss should be long-term capital






















                                     VIII-8
<PAGE>   324
gain or loss if such holder held the Other Class 3.2 Claim for more than one

year as of the Effective Date.   

          (iii) A holder's tax basis in the Preferred Stock and DECS would be

equal to the fair market value of the Preferred Stock and DECS, respectively, as

of the Effective Date and the holder's tax basis in the New Indenture Securities

would be equal to the issue price of such Securities.  The holding period of the

Preferred Stock, DECS and New Indenture Securities would begin on the day

immediately following the Effective Date. 

     4.   HOLDERS OF CLASS 4 CLAIMS.

     The tax consequences to the holder of a Class 4 Claim are not entirely

clear and will depend, in part, on the specific nature of the Claim, whether the

Claim relates to the acquisition of Debentures or Interests, whether the holder

still holds the Debentures or Interests at the time that distributions under the

Plan are made with respect to the Claim, whether the Debentures or Interests

were held as capital assets and whether the holder receives any shares of Common

Stock or other debt or equity securities of Columbia with respect to such

holder's Claim.  Holders of Class 4 Claims are advised to consult their tax

advisors with respect to the tax treatment of amounts they receive in respect of

their Class 4 Claims.

     5.   CERTAIN OTHER TAX CONSIDERATIONS FOR HOLDERS OF CLAIMS

          a.  RECEIPT OF INTEREST

     Holders of Claims not previously required to include in their taxable

income any accrued but unpaid interest on a Claim




















                                     VIII-9
<PAGE>   325
will be treated as receiving taxable interest to the extent that any

consideration they receive under the Plan is allocable to such interest. 

Holders who previously included in their taxable income any accrued but unpaid

interest on a Claim may be entitled to recognize a deductible loss to the extent

that such interest is not actually paid under the Columbia Plan.  A holder's tax

basis in the New Indenture Securities, Preferred Stock and DECS treated as

received in exchange for any accrued but unpaid interest will be equal to the

fair market value of such New Indenture Securities, Preferred Stock and DECS,

respectively, as of the Effective Date.  The holding period for such New

Indenture Securities, Preferred Stock and DECS will begin on the day immediately

following the Effective Date.  Columbia will file information returns reflecting

the fact that the consideration received by such holders under the Columbia Plan

includes accrued interest.

          b.   ACCRUED MARKET DISCOUNT

     A debt instrument that is purchased or acquired for less than its stated

redemption price at maturity will have "market discount" for federal income tax

purposes unless such discount is less than a specified de minimis amount.  The

same rule applies to the purchase or acquisition of a debt instrument with

original issue discount, as discussed below, for less than its "adjusted issue

price."  (The "adjusted issue price" is generally the issue price of the debt

instrument increased by the original issue discount includable in income by all

of the instrument's






















                                     VIII-10
<PAGE>   326
previous holders and decreased by all payments on the instrument other than

payments of "qualified stated interest," as defined under Section 5.c below.)  A

holder of a Claim with market discount must treat any gain recognized with

respect to the principal amount of such Claim as ordinary income to the extent

of the Claim's accrued market discount.  Also, if the accrued market discount on

a "security" (as determined for tax purposes) surrendered in the exchange

exceeds the gain recognized on such security under the Plan, such excess accrued

market discount will be allocated between the New Indenture Securities,

Preferred Stock and DECS in proportion to their fair market values.  The accrued

market discount allocated to the New Indenture Security will be treated as

accrued market discount subject to the rules discussed below.  The accrued

market discount allocated to the Preferred Stock or DECS will be treated as

ordinary income when the holder disposes of such stock (or the Common Stock into

which the DECS may be converted) in a taxable transaction.

     Unless the holder of debt having market discount elects to include such

market discount in income as it accrues, gain on the retirement or disposition

of such market discount debt issued after July 18, 1984 will be ordinary income

to the extent of the cumulative amount of market discount that has accrued

during such holder's holding period ("accrued market discount").  The amount of

accrued market discount is calculated either by using a straight line method or

a constant interest method.  Such holder may also be required to defer the

deduction for all or a portion






















                                     VIII-11
<PAGE>   327
of the interest expense on any indebtedness incurred or maintained to carry the

debt until its maturity or disposition in a taxable transaction.  A holder of

debt having market discount may instead elect to include such market discount in

income currently as it accrues, in which case no deferral of the deduction for

interest expense will be required.

          c.   ORIGINAL ISSUE DISCOUNT ("OID")

     Under the Code, a holder of a debt instrument which has OID must include a

portion of the OID in gross income on a constant yield basis in each taxable

year or portion thereof in which the holder holds the debt instrument even if

the holder has not received a cash payment in respect of such OID.  The Code

defines OID as the difference between the issue price and the stated redemption

price at maturity of a debt instrument (assuming the difference exceeds a de

minimis amount).  The stated redemption price at maturity is generally the total

of all payments due the holder of the instrument, other than interest payments

based on a fixed rate or certain floating rates and payable unconditionally at

fixed intervals of one year or less during the entire term of the instrument

("qualified stated interest").  The issue price of a debt instrument depends on

the circumstances surrounding its issuance.  The issue price of a debt

instrument that is issued for property and publicly traded or is issued in

exchange for publicly traded property is generally the fair market value of the

debt instrument when issued.  The fair market value generally is the price at

which the debt instrument trades on the first






















                                     VIII-12
<PAGE>   328
trading day after issuance.  Debt instruments issued for property not subject to

the foregoing rule generally are considered to have an issue price equal to

their stated principal amount if they bear "adequate stated interest" (within

the meaning of the OID rules).

     A holder acquiring a debt instrument in a reorganization exchange may

exclude all of the OID on such debt instrument from such holder's taxable income

if it is acquired at a "premium" (that is, if the adjusted tax basis in the

acquired debt instrument exceeds all payments due on the instrument after the

acquisition date, other than payments of qualified stated interest) and may

exclude a part of the OID on such debt instrument from such holder's taxable

income if it is acquired at an "acquisition premium" (that is, if the adjusted

tax basis in the acquired debt instrument exceeds its adjusted issue price but

is less than its stated redemption price at maturity).

     Columbia believes that none of the New Indenture Securities to be issued

under the Columbia Plan should bear OID because all issues of New Indenture

Securities issued under the Columbia Plan (i) will bear adequate stated

interest, and (ii) are expected to trade on the first trading day at their

respective par values.  If, however, the New Indenture Securities trade at less

than their respective par values, OID may arise to the extent of the difference

between the fair market value of the New Indenture Securities and their stated

principal amount.  The rules and regulations governing the calculation of OID

are complex; holders






















                                     VIII-13
<PAGE>   329
of New Indenture Securities are therefore urged to consult their tax advisors

with regard to the tax consequences to them of owning such securities.  If the

New Indenture Securities were issued with OID, Columbia would report to each

holder the amount of OID includable in income in each taxable year.

          d.   FUTURE STOCK GAINS

     Any gain recognized by a Holder on the later sale or taxable exchange of

Preferred Stock or DECS received under the Columbia Plan in satisfaction of a

Claim will be treated as ordinary income to the extent of (i) accrued market

discount carried over in the exchange, as described above or (ii) any bad debt

or ordinary loss deduction taken by such holder with respect to such Claim less

any amount included in such holder's gross income on the satisfaction of such

Claim pursuant to the Plan.

          e.   FUTURE SALES OF NEW DEBT

     Generally, a holder of New Indenture Securities will recognize gain or loss

upon the sale, retirement or other disposition of the New Indenture Securities

in an amount equal to the difference between the amount realized from such sale,

retirement or other disposition and such holder's adjusted tax basis for such

New Indenture Securities.  A holder's basis for its New Indenture Securities

will initially be determined as provided above.  Thereafter, a holder's basis

will be increased by the amount of any OID that the holder includes in its

income while it holds the New Indenture Securities and decreased by the amount

of payments, other than qualified stated interest






















                                     VIII-14
<PAGE>   330
payments, received by the holder with respect to the New Indenture Securities. 

Under existing laws, gain or loss on a disposition of the New Indenture

Securities generally will (except to the extent of any accrued OID or market

discount) constitute capital gain or loss, and will be long-term if the New

Indenture Securities have been held for one year or more.

          f.   DEFEASANCE OF NEW INDENTURE SECURITIES

     As more fully described in Section X.E.2, "Securities To Be Issued Pursuant

To The Plan; Indenture Securities", Columbia, at its option, may terminate (a)

all its obligations in respect of the New Indenture Securities and the New

Indenture ("Legal Defeasance Option") or (b) its obligations to comply with

certain restrictive covenants therein ("Covenant Defeasance Option"), provided

certain conditions are met.  If Columbia were to exercise its Legal Defeasance

Option, such exercise may be treated for federal income tax purposes as a

taxable exchange of the New Indenture Securities for new securities on the date

the cash or other obligations are deposited with the trustee to effect such

defeasance.  If the transaction were treated as a taxable exchange, a holder may

recognize gain or loss in respect of the New Indenture Securities as described

in Section 5.e above.

          g.   TAX TREATMENT OF DECS (AND PREFERRED STOCK, WHERE NOTED)

     Stock having terms closely resembling those of the DECS has not been the

subject of any regulation, ruling or judicial decision currently in effect. 

Although the IRS may take contrary






















                                     VIII-15
<PAGE>   331
positions, the likely federal income tax consequences associated with the

ownership and disposition of the DECS (and Preferred Stock, where noted) are as

follows:

     Dividends.  Dividends paid on the DECS (and Preferred Stock) out of

Columbia's current or accumulated earnings and profits will be taxable as

ordinary income and will qualify for the 70 percent intercorporate dividends-

received deduction subject to the minimum holding period (generally at least 46

days) and other applicable requirements.  Under certain circumstances, a

corporate holder may be subject to the alternative minimum tax with respect to

the amount of its dividends-received deduction.

     A corporation that receives an "extraordinary dividend," as defined in

Section 1059(c) of the Code, is required under certain circumstances to reduce

its stock basis by the non-taxed portion of such dividend.  Generally, quarterly

dividends not in arrears paid to an original holder of the DECS (or Preferred

Stock) will not constitute extraordinary dividends under Section 1059(c).  In

addition, under Section 1059(f), any dividend with respect to "disqualified

preferred stock" is treated as an "extraordinary dividend."  However, while the

issue is not free from doubt due to the lack of authority directly on point, the

DECS (and Preferred Stock) are not expected to constitute "disqualified

preferred stock."

     Redemption Premium.  Under certain circumstances, Section 305(c) of the

Code requires that any excess of the redemption price of preferred stock over

its issue price be includable in




















                                     VIII-16
<PAGE>   332
income, prior to receipt, as a constructive dividend.  While the issue is not

free from doubt due to a lack of authority addressing the issue, assuming that

the issue price (fair market value) of the DECS and the Preferred Stock equals

its stated face amount, Section 305(c) should not currently apply to stock with

terms such as those of the DECS (or Preferred Stock). 

     Redemption or Mandatory or Optional Conversion into Common Stock.  Gain or

loss generally will not be recognized by a holder upon the redemption of the

DECS for shares of Common Stock or the conversion of DECS into shares of Common

Stock if no cash is received.  Income may be recognized, however, to the extent

cash or Common Stock is received in payment of accrued and unpaid dividends in

arrears.  Such income would probably be characterized as dividend income,

although some uncertainty exists as to the appropriate characterization of

payments in satisfaction of undeclared accrued and unpaid dividends.  In

addition, a holder who receives cash in lieu of a fractional share will be

treated as having received such fractional share and having exchanged it for

cash in a transaction subject to Section 302 of the Code and related 

provisions.  Such exchange should generally result in capital gain or loss 

measured by the difference between the cash received for the fractional share 

interest and the holder's basis in the fractional share interest.

     Generally, a holder's basis in the Common Stock received upon the

redemption or conversion of the DECS (other than shares of Common Stock taxed

upon receipt) will equal the adjusted tax






















                                     VIII-17
<PAGE>   333
basis of the redeemed or converted DECS plus the amount of gain recognized,

minus the amount of cash received, and the holding period of such Common Stock

will include the holding period of the redeemed or converted DECS.

     Special rules, as discussed above, may apply to certain gain recognized

upon the sale or other taxable disposition of the DECS or of the Common Stock

received upon redemption or conversion of the DECS.

     Adjustment of Conversion Rate.  Certain adjustments (or failures to make

adjustments) to the Conversion Rate, in the case of mandatory conversions, or

the Conversion Price, in the case of optional conversions, to reflect Columbia's

issuance of certain rights, warrants, evidences of indebtedness, securities or

other assets to holders of Common Stock may result in a constructive

distribution taxable as dividends to the holders of the DECS, which may

constitute (and cause other dividends to constitute) "extraordinary dividends"

to corporate holders.  See "Dividends."

     Conversion of DECS after Dividend Record Date.  If a holder of DECS

exercises such holder's right to convert DECS into shares of Common Stock after

a dividend record date but before payment of the dividend, then such holder

generally will be required to pay Columbia an amount equal to the portion of

such dividend attributable to the current quarterly dividend period upon

conversion, which amount would increase the basis of the Common Stock received. 

The holder would recognize the dividend payment as income.
























                                     VIII-18
<PAGE>   334
          h.   DISPOSITION OF PREFERRED STOCK AND DECS
               PURSUANT TO CASH-OUT ELECTION

     A holder of a Class 3.2 Claim who receives cash in lieu of shares of

Preferred Stock and DECS pursuant to the exercise of the Cash-Out Election is

likely to be treated as having received such shares under the Plan (and be

subject to tax in the manner described in Section B, above), and having

exchanged them for cash in a transaction subject to Section 302 of the Code and

related provisions.  Such holder should recognize gain or loss measured by the

difference between the amount of cash received in the exchange and such holder's

adjusted tax basis in the Preferred Stock and DECS, respectively.  Except as

discussed in Section 5.d above, any such gain or loss generally should be

treated as capital gain or loss.

          i.   BACKUP WITHHOLDING

     Interest paid to a holder of New Indenture Securities and dividends paid to

a holder of Preferred Stock or DECS will ordinarily not be subject to

withholding of federal income taxes.  Withholding of such tax at a rate of 31

percent may be required, however, by reason of certain events (such as the

failure of a holder to supply the issuer or its agent with such holder's

taxpayer identification number).  Such "backup" withholding may also apply to a

holder who is otherwise exempt from backup withholding if such holder fails

properly to document his exempt status.  If dividends and interest are subject

to backup withholding, the amount of tax withheld in each year is reflected as a

credit in the holder's tax return for such year (and may be





















                                     VIII-19
<PAGE>   335
refunded if such holder's federal income tax liability has been otherwise

satisfied).  Each holder of a Claim who receives New Indenture Securities,

Preferred Stock or DECS will be asked to provide and certify such holder's

correct taxpayer identification number.

     6.   HOLDERS OF CLASS 7 INTERESTS

     The holders of Class 7 Interests should have no tax consequences as a

result of the retention of their shares of Common Stock under the Columbia Plan

(except to the extent that they may hold, and receive consideration with respect

to, Class 4 Claims, as discussed in Section B.4 above).

     7.   IMPORTANCE OF OBTAINING PROFESSIONAL TAX ASSISTANCE

     The foregoing is intended to be a summary only and not a substitute for

careful tax planning with a tax professional.  The federal, state and local

income and other tax consequences of the Plan Columbia are complex and, in some

cases, uncertain.  Such consequences may also vary based on the particular

circumstances of each holder of a claim.  Accordingly, each holder is strongly

urged to consult with its own tax advisor regarding the federal, state and local

income and other tax consequences to it of the Columbia Plan.
































                                     VIII-20
<PAGE>   336
IX.  VOTING PROCEDURES AND CONFIRMATION REQUIREMENTS

      A.   CONFIRMATION HEARING

      The Bankruptcy Code requires the Bankruptcy Court, after notice, to hold

a hearing (the "Confirmation Hearing") on whether the Columbia Plan and its

proponent has fulfilled the Confirmation requirements of section 1129 of the

Bankruptcy Code.  The Confirmation Hearing has been scheduled for

_______________ at _____ a.m. before the Honorable Helen S. Balick, United

States Bankruptcy Court for the District of Delaware, 824 Market Street,

Wilmington, Delaware 19801.  The Confirmation Hearing may be adjourned from

time to time by the Bankruptcy Court without further notice, except for an

announcement of the adjourned date made at the Confirmation Hearing.  Any

objection to Confirmation of the Columbia Plan must be made in writing and

specify in detail the name and address of the objector, all grounds for the

objection, and the amount and proposed treatment of the Claim held by the

objector.  Any such objections must be Filed and served upon the persons

designated in the notice of the Confirmation hearing, including Columbia.

      B.   CONFIRMATION REQUIREMENTS

      In order to confirm the Columbia Plan, the Bankruptcy Code requires that

the Bankruptcy Court make a series of findings concerning that Plan and

Columbia's compliance with the requirements of Chapter 11, including, in

relevant part, that:







                                     IX-1
<PAGE>   337

           (i) the Plan complies with the applicable provisions of the

      Bankruptcy Code; 

           (ii) the Bankruptcy Court approves, after notice and a hearing,

      Columbia's Disclosure Statement as containing adequate information as

      required pursuant to section 1125 of the Bankruptcy Code;

           (iii) the proponent of the Columbia Plan has complied with the

      relevant provisions of the Bankruptcy Code; 

           (iv) the proponent of the Columbia Plan has proposed that Plan in

      good faith and not by any means forbidden by law;

           (v) any payments made or to be made for services or for costs and

      expenses in or in connection with the Reorganization Case or the

      Columbia Plan have been approved by or are subject to the approval of

      the Bankruptcy Court as reasonable; 

           (vi) the proponent of the Columbia Plan has disclosed (a) the

      identity and affiliations of any individual proposed to serve, after

      Confirmation, as a director or officer of Reorganized Columbia (and the

      appointment or continuance in such office of such individual is

      consistent with the interests of Creditors and equity security holders

      and with public policy) and (b) the identity of any insider that will be

      employed or retained by Reorganized Columbia and the nature of any

      compensation for such insider; 




                                     IX-2
<PAGE>   338
           (vii) any governmental regulatory commission with jurisdiction,

      after confirmation of the Columbia Plan, over Columbia's rates has

      approved any rate change provided for in that Plan, or such rate change

      is expressly conditioned on such approval;

           (viii) the Columbia Plan is in the "best interests" of all the

      holders of Claims or Interests in an impaired Class by providing to such

      holders on account of their respective Claims or Interests, property of

      a value, as of the Effective Date, that is not less than the amount that

      such holder would receive or retain in a Chapter 7 liquidation, unless

      each holder of a Claim or Interest in such Class has accepted the Plan; 

           (ix) the Columbia Plan has been accepted by the requisite

      majorities of holders of Claims or Interests in each impaired Class of

      Claims or Interests or, if accepted by at least one but not all of such

      Classes, is "fair and equitable," and does not discriminate unfairly as

      to any non-accepting Class, as required by the so-called "cram-down"

      provisions of section 1129(b) of the Bankruptcy Code; 

           (x) the Columbia Plan is feasible and Confirmation is not likely to

      be followed by the liquidation or the need for further financial

      reorganization of Columbia; 

           (xi) all fees and expenses payable under 28 U.S.C. Section  1930,

      as determined by the Bankruptcy Court at the hearing on Confirmation of

      the Columbia Plan, have been paid, or the 









                                     IX-3
<PAGE>   339
      Columbia Plan provides for the payment of such fees on the Effective

      Date; and 

           (xii) the Columbia Plan provides for the continuation after the

      Effective Date of all retiree benefits, as defined in section 1114 of

      the Bankruptcy Code, at the level established at any time prior to

      Confirmation pursuant to sections 1114(e)(1)(B) or 1114(g) of the

      Bankruptcy Code, for the duration of the period that Columbia has

      obligated itself to provide such benefits.

           1.  ACCEPTANCE

      Under the Bankruptcy Code, all impaired Classes of Claims and Interests

are entitled to vote to accept or reject the Columbia Plan.  Pursuant to

section 1126 of the Bankruptcy Code, the Columbia Plan will be accepted by an

impaired Class of Claims if holders of two-thirds in dollar amount and a

majority in number of Claims of that Class vote to accept that Plan.  Only the

votes of those holders of Claims who actually vote (and are entitled to vote)

to accept or reject the Columbia Plan count in this tabulation.  The Columbia

Plan will be accepted by an impaired Class of Interests if holders of two-

thirds of the amount of outstanding shares in such Class vote to accept that

Plan.  As with Claims, only those holders of Interests who actually return a

ballot count in this tabulation.  Pursuant to section 1129(a)(8) of the

Bankruptcy Code, all the impaired Classes of Claims must accept the Columbia

Plan in order for that Plan to be confirmed on a consensual basis (and at

least 










                                     IX-4
<PAGE>   340
one such impaired Class must accept the Plan without including acceptance by

an insider in that determination).  However, under the cram-down provisions of

section 1129(b) of the Bankruptcy Code, only one impaired Class (determined

without including the acceptance by any insider) needs to accept the Columbia

Plan if the other conditions to cram-down are met.  

      The Columbia Plan provides for two Classes of Claims which are impaired

or deemed impaired (Classes 3.2. and 4), which classes are unsecured and are

entitled to vote on that Plan. 

      The Columbia Plan provides for one Class of Interests (Class 8), which

Class is deemed impaired and is entitled to vote on the Plan.

           2.  BEST INTERESTS TEST

      Notwithstanding acceptance of the Columbia Plan by each impaired Class,

section 1129(a)(7) of the Bankruptcy Code requires that the Bankruptcy Court

determine that such Plan is in the best interests of each holder of a Claim or

Interest in any such impaired Class if any holder in such Class has voted

against the Plan.  Accordingly, if an impaired Class under the Columbia Plan

does not unanimously accept that Plan, the "best interests" test requires that

the Bankruptcy Court find that the Columbia Plan provides to each member of

such impaired Class a recovery on account of the member's Claim or Interest

that has a value, as of the Effective Date, at least equal to the value of the

distribution that each such member would receive if Columbia were then

liquidated under Chapter 7 of the Bankruptcy Code.








                                     IX-5
<PAGE>   341

      To estimate what members of each impaired Class of Claims or Interests

would receive if Columbia were liquidated as part of a Chapter 7 case, the

Bankruptcy Court must analyze the recoverable values achievable and the nature

and amount of liabilities to be satisfied if the Reorganization Case is

converted to a Chapter 7 case under the Bankruptcy Code and Columbia's assets

are liquidated by a Chapter 7 trustee.  See Section X.C, "Best Interests

Test".  Columbia believes that its Plan meets the "best interests" test by

providing value to impaired Classes that is at least equal to and may be

greater than that which they would receive in a Chapter 7 liquidation of

Columbia, since the Plan provides for the payment in full of all impaired

Claims.

           3.  FEASIBILITY

      Section 1129(a)(11) of the Bankruptcy Code requires a finding that

Confirmation of the Columbia Plan is not likely to be followed by the

liquidation, or the need for further financial reorganization, of Columbia or

any successor to Columbia (unless such liquidation or reorganization is

proposed in its Plan, which is not the case for Columbia).  For purposes of

determining whether its Plan meets this requirement, Columbia and its

financial advisors have analyzed the ability of Columbia to meet its

obligations under the Columbia Plan.  As part of this analysis, Columbia, in

consultation with Salomon, has prepared the Projections, which together with

the material assumptions on which they are based, are set forth in Section







                                     IX-6
<PAGE>   342
X.B, "Financial Projections; Recapitalization".  Based upon the Projections,

Columbia and its financial advisors believe that its reorganization under the

Columbia Plan will meet the feasibility requirements of section 1129(a)(11) of

the Bankruptcy Code.

           4.  THE PLAN MUST COMPLY WITH THE APPLICABLE PROVISIONS OF THE
               BANKRUPTCY CODE

      Section 1129(a)(1) of the Bankruptcy Code requires that the Columbia

Plan comply with the applicable provisions of the Bankruptcy Code.  Columbia

and its bankruptcy counsel believe that the Columbia Plan complies with all

applicable provisions of the Bankruptcy Code, including all provisions of

section 1129(a) not otherwise specifically discussed herein.

               a.   CLASSIFICATION OF CLAIMS AND INTERESTS

      Section 1122 of the Bankruptcy Code sets forth the requirements relating

to classification of claims.  Section 1122(a) provides that claims or

interests may be placed in a particular class only if they are substantially

similar to the other claims or interests in that class.  Columbia and its

bankruptcy counsel believe that all Classes under its Plan satisfy the

requirements of section 1122(a).  Columbia's unsecured creditors have been

classified according to the following criteria:

           CLASS 2. Non-Borrowed Money Claims.  This Class consists of all

pre-petition Claims that are not treated in any other Class under the Plan. 

This Class is primarily comprised of pre-petition claims for uncashed

dividends, proxy fees, 








                                     IX-7
<PAGE>   343
directors' fees and expenses, intercompany payables and all other trade-

payable type Claims against Columbia.  These Claims will be paid on the

Effective Date in cash, in full, plus post-petition interest.

           CLASS 3.1.  Borrowed Money Convenience Claims.  This Class consists

of all pre-petition Claims for Borrowed Money that are for an amount that is

not more than $15,000.  This Class constitutes a convenience class as

contemplated by section 1122(b) of the Bankruptcy Code, whereby all smaller

Borrowed Money Claims are to be paid, in cash, in full, on the Effective Date. 

This classification is justified by administrative convenience and fairness to

holders of very small claims.  Specifically, it permits such Creditors to be

paid in cash thereby avoiding the administrative burden and costs attendant to

issuing such Creditors small strips of the debt and equity securities to be

issued to the remainder of the Borrowed Money Creditors in order to satisfy

their Claims.

           CLASS 3.2.  Other Borrowed Money Claims.  This Class consists of

all Borrowed Money Claims not falling within the convenience class of Class

3.1.  The Class 3.2 Claims are further subclassified for descriptive and

convenience of reference purposes only.  Columbia is treating all the Borrowed

Money Creditors in a like manner:  all are being paid in full and will receive

the same form of distribution, namely, a pro rata share, based on the amounts

of their respective claims, of a certain combination of Cash, New Indenture

Securities, 








                                     IX-8
<PAGE>   344
Preferred Stock and DECS, subject to adjustment to avoid the issuance of

fractional shares, odd lots of DECS and New Preferred Stock and non-round lots

of New Indenture Securities.

           CLASS 4.  The Securities Action Claims.  This Class consists of all

properly filed Securities Action Claims.  The Claims are properly classified

as they are the only Class of Claims against Columbia that are disputed and

unliquidated.  Moreover, they arise from a distinct set of legal principles

and, as Claims for damages arising from the purchase or sale of securities,

are subject to the specific subordination provisions of section 510(b) of the

Bankruptcy Code.  Due to the uniqueness of these Claims, Columbia has

proposed, as part of the Columbia Plan, a comprehensive settlement offer to

the Securities Claimants to settle all of the Securities Litigation-related

Claims.  Such settlement proposal includes an Offer of Settlement by Columbia

and the Contributing Non-Debtors in an aggregate amount of up to $18 million,

in exchange for a full release of all Securities Action Claims against

Columbia and the Contributing Non-Debtors.  Although the Class 4 Claims are

technically unimpaired by the Columbia Plan, Class 4 Claimants will be deemed

impaired and will vote on whether to accept or reject the Columbia Plan and

the Offer of Settlement embodied therein.

           CLASS 5.  Intercompany Claim.  Class 5 consists of the Intercompany

Claims.  The Columbia Omnibus Settlement includes consideration from Columbia

to TCO to settle the Intercompany 






                                     IX-9
<PAGE>   345
Claims and other claims which have been or might be asserted by the TCO Estate

and its Creditors against Columbia.

           CLASS 6.      Assumed Claims.  Class 6, which is subclassified into

Classes 6.1, 6.2 and 6.3, consists of similar indemnity or guarantee-type

obligations of Columbia, which obligations Columbia has agreed to assume post-

Reorganization.  These Assumed Claims include: (i) the indemnity Claims of

officers, directors, agents and employees of Columbia and its subsidiaries

relating to liabilities that may be assessed against them to the extent

applicable insurance proceeds are inadequate to satisfy such Claims; (ii) the

Claim of the PBGC against Columbia for Columbia's secondary obligations for

contributions to the pension funds of Columbia's subsidiaries and (iii) the

Claims of Shawmut Bank of Boston, N.A. for certain obligations of Columbia to

guarantee Columbia Ohio's headquarters lease.

           CLASS 7. Non-Accepting Securities Claims.  Class 7 consists of all

Securities Action Claims held by claimants who timely file satisfactory

individual proofs of claims but reject Columbia's Offer of Settlement to the

Securities Claimants.  These Claims are properly classified separately as they

have opted not to accept Columbia's Offer of Settlement and proposed

treatment.  Reorganized Columbia will assume the Class 7 Securities Claims.

      Columbia believes the classifications of Unsecured Claims set forth in

its Plan are appropriate in classifying 









                                     IX-10
<PAGE>   346
substantially similar Claims together, and do not discriminate unfairly in the

treatment of those Classes.  In fact, the classifications are intended to

enhance administrative convenience, recognize and accommodate distinct legal

entitlements of various types of Unsecured Claims, and effectuate reasonable

settlements of disputes that are beneficial to the Estate and fair to all of

Columbia's Creditors.

               b.   MANDATORY AND OPTIONAL PLAN PROVISIONS

      Section 1123 of the Bankruptcy Code specifies both mandatory and

optional provisions that a plan shall or may contain.  In general, section

1123(a) mandates that a plan shall designate classes of claims and interests

(excluding administrative and priority claims identified in section 507);

specify any class of claims or interests that is not impaired; specify the

treatment of classes of claims or interests that are impaired; provide the

same treatment for each claim or interest in a particular class, unless the

holder thereof agrees to a less favorable treatment; provide adequate means

for the plan's implementation including (as provided in the Columbia Plan) the

retention by the debtor of all of the property of the estate and the

satisfaction or modification of liens; provide for the inclusion in the

debtor's charter of a provision prohibiting the issuance of non-voting equity

securities; and contain only provisions that are consistent with the interests

of creditors and equity security holders and with public policy with respect

to the manner of 







                                     IX-11
<PAGE>   347
selection of any officer, director or trustee under the plan.  Columbia and

its bankruptcy counsel believe that the Columbia Plan complies in all respects

with the relevant requirements of section 1123(a).

      Section 1123(b) provides that a plan may impair or leave unimpaired any

class of claims or interests; provide for the assumption, rejection or

assignment of executory contracts or unexpired leases not previously rejected;

provide for the settlement or adjustment of any claims belonging to the debtor

or the estate; and include any other appropriate provision not inconsistent

with the applicable provisions of title 11.

      The Columbia Plan avails itself of many of the optional provisions of

section 1123(b), and does so, in the opinion of Columbia and its bankruptcy

counsel, in compliance with applicable standards of law.  With respect to all

executory contracts and unexpired leases not previously assumed or rejected

and which have not terminated after the Petition Date by their own terms or by

operation of law, the Columbia Plan specifies the proposed treatment to be

accorded to those contracts.  Notably, the Columbia Plan contains important

provisions for the settlement or adjustment of Claims against Columbia and its

Estate, including the settlement of disputes relating to the calculation and

allowance of post-petition interest on pre-petition Claims, and the resolution

of litigable issues with the Creditors of the TCO estate. 











                                     IX-12
<PAGE>   348
               c.   POST-PETITION INTEREST

      As a general rule, the Bankruptcy Code provides for the disallowance of

claims for unmatured interest on pre-petition unsecured claims against the

estate.  11 U.S.C. Section  502(b)(2).  However, it is fairly well-established

in case law that a solvent debtor in a chapter 11 proceeding is required to

pay post-petition interest on its unsecured debt.  In reaching this

conclusion, courts have followed several lines of reasoning.  One well-

established line of case law holds that, based upon equitable principles,

there is a "solvent-debtor" exception to the general rule prohibiting post-

petition interest on unsecured claims, which permits unsecured creditors of a

solvent debtor to recover post-petition interest on pre-petition claims,

subject to the general equitable power of the bankruptcy court to approve the

calculation and allowance of such interest.  

      Another line of case law holds that in order for a plan to meet the

"best interests" test set forth in section 1129(a)(7) of the Bankruptcy Code

for dissenting, impaired creditors, compliance with the statutory Chapter 7

distribution priorities set forth in section 726 of the Bankruptcy Code is

required, which in turn requires payment of interest on creditor claims before

distributions can be made to equity holders.  

      Recent legislative modifications to section 1124 of the Bankruptcy Code

embodied in the Bankruptcy Reform Act of 1994, have also validated the concept

that in order for a plan of reorganization for a solvent debtor to be "fair

and equitable", 






                                     IX-13
<PAGE>   349
unsecured claims are entitled to be paid in full, including post-petition

interest, before equity holders may participate in any recovery.  While, the

Bankruptcy Reform Act of 1994, including the amendment to section 1124, is

applied only prospectively to cases filed after its effective date and

therefore technically does not apply to the Columbia Reorganization Case, some

courts have nevertheless applied the reasoning of the Bankruptcy Reform Act to

bankruptcy cases filed before its effective date.  See, e.g., In re Artha

Management, Inc., 174 B.R. 671 (Bankr. S.D.N.Y. 1994).

      The Columbia Plan includes payment of post-petition interest on

Creditors' Claims.  The amount of post-petition interest has been discussed

with the Columbia Equityholders' Committee, the Columbia Creditors' Committee,

and individual holders of Borrowed Money Claims.  See Section IV.A, "Borrowed

Money Claims and the Negotiations and Settlement of Such Claims", for a more

complete discussion of the resolution and the positions of the parties on this

issue.  

               d.   COMPROMISE OF INTERCOMPANY CLAIMS

      Practically from the inception of Columbia's and TCO's Chapter 11 cases,

there has been intense, costly litigation over the claims of TCO's creditors,

asserted by the TCO Creditors' Committee and ultimately joined by TCO's

Customers' Committee, to recoveries of additional value for themselves from

Columbia's Estate, over and above the enterprise value of TCO.  Both through

the Intercompany Claims litigation itself, and through 









                                     IX-14
<PAGE>   350
numerous discovery demands and various motions to the Bankruptcy Court, the

TCO Creditors' Committee has sought to enhance the recoveries of TCO's

Creditors by: 

           --  opposing extensions of Columbia's and TCO's exclusive periods

               for filing plans of reorganization, asserting their intention

               to file a liquidating plan for TCO, and demanding that Columbia

               "bid" for TCO in some type of public auction (notwithstanding

               the absence of any third-party offer for TCO arising out of the

               data room proceedings requested by the TCO Creditors' Committee

               (See discussion in Section V.F.14));

           --  Continually disputing Columbia's going-concern valuation of TCO

               without defining to what extent that valuation was deficient or

               improper;

           --  Asserting and prosecuting the Intercompany Claims;

           --  Opposing the allocations of liability to TCO under the IRS

               Settlement and TCO's Settlement with the Environmental

               Protection Agency.(1)

      Columbia has had to weigh the interests of its Creditors and

Equityholders in a prompt and viable reorganization of Columbia 






- ------------------------
(1)   On November 16, 1994, the Bankruptcy Court approved three
      settlements by TCO with various governmental environmental
      agencies which include the U.S. Environmental Protection
      Agency, the Kentucky Natural Resources and Environmental
      Protection Cabinet and the Pennsylvania Department of
      Environmental Resources.  These settlements address TCO's
      environmental remediation obligations under Federal law and
      the laws of the Commonwealths of Kentucky and Pennsylvania.

                                     IX-15
<PAGE>   351
and TCO against the Intercompany Claims asserted by TCO's Creditors in

developing a global restructuring proposal for Columbia and TCO which fairly

values the rights and interests of all parties.

      The Columbia Omnibus Settlement provides the foundation upon which both

Columbia and TCO can reorganize and emerge from Chapter 11 as healthy, viable

companies:

           --  100% recoveries for Columbia's Creditors;

           --  with investment grade debt and stabilized shareholder values

               for Columbia; and

           --  substantial recoveries for all Creditors of TCO, rendering them

               whole or nearly whole on their Claims notwithstanding the

               insolvency of TCO's estate.

      Columbia and its bankruptcy counsel believe that both the letter and

spirit of Chapter 11 validate the compromises and settlements contained in the

Columbia Plan, and that they are reasonable, legally justified, equitable, and

in the best interests of Columbia, its Creditors and Stockholders.

           5.  COLUMBIA MUST COMPLY WITH THE APPLICABLE PROVISIONS OF THE
               BANKRUPTCY CODE

      Section 1129(a)(2) of the Bankruptcy Code requires that Columbia, as the

proponent of the Columbia Plan, comply with the applicable provisions of the

Bankruptcy Code.  Columbia believes that, as the proponent of its Plan, it has

complied with, and continues to comply with, the applicable provisions of the

Bankruptcy Code.







                                     IX-16
<PAGE>   352
      Section 1125(b) of the Bankruptcy Code requires that acceptance or

rejection of a plan may not be solicited from a holder of a claim or interest

after the commencement of the case  unless the plan or a summary of the plan

and a written disclosure statement (which has been approved, after notice and

hearing, by the Bankruptcy Court as containing adequate information) are

transmitted to such holder.  The court may approve a disclosure statement

without a valuation of the debtor or an appraisal of the debtor's assets. 

      Columbia intends to solicit acceptances of its Plan only after the

Bankruptcy Court has approved the adequacy of information in this Disclosure

Statement, and will make appropriate motions to the Bankruptcy Court to

establish procedures for notice and hearing on the Disclosure Statement, and

on Confirmation of the Columbia Plan once the Disclosure Statement is

approved.  In addition, as described in more detail in Section III.B.2, "HCA

Jurisdiction Over the Terms of the Columbia Plan", Columbia will submit its

Plan and this Disclosure Statement for approval to the SEC in accordance with

Sections 11(f) and (g) of the HCA, including authorization to distribute this

Disclosure Statement.  

      Section 1126 of the Bankruptcy Code and related Bankruptcy Rules govern

issues relating to voting on and acceptance or rejection of a plan.  Section

1126(a) provides that "the holder of a claim or interest allowed under section

502 of this title may accept or reject a plan."  Substantially all Claims

against 








                                     IX-17
<PAGE>   353
Columbia have been allowed, or are not disputed at this time, and thus, are

entitled to vote, if impaired, in the stated amount of those Claims.

      Consequently, Columbia and its bankruptcy counsel believe that the

Columbia Plan complies or will comply with sections 1125 and 1126 of the

Bankruptcy Code.

           6.  ALTERNATIVES TO THE PLAN

               a.   CRAMDOWN REQUIREMENTS

      The Bankruptcy Code provides for Confirmation of the Columbia Plan even

if it is not accepted by all impaired Classes, as long as at least one

impaired Class of Claims has accepted it (without counting the acceptances of

insiders).  These so-called "cramdown" provisions are set forth in section

1129(b) of the Bankruptcy Code.  The Columbia Plan may be confirmed under the

cramdown provisions if, in addition to satisfying the other requirements of

section 1129 of the Bankruptcy Code, it (i) is "fair and equitable" and (ii)

"does not discriminate unfairly" with respect to each Class of Claims or

Interests that is impaired under, and has not accepted, such Plan.

      If necessary, the Columbia Plan may be confirmed over the dissent of any

Class of unsecured Claims so long as one impaired Class of Unsecured Claims

accepts that Plan.

               (i)  THE PLAN MUST BE FAIR AND EQUITABLE

      With respect to a dissenting Class of Unsecured Creditors, the "fair and

equitable" standard requires, among other things, 







                                     IX-18
<PAGE>   354
that the Columbia Plan contain one of two elements.  The Plan must provide

either that each Unsecured Creditor in the Class receive or retain property

having a value, as of the Effective Date of the Plan equal to the Allowed

amount of its Claim, or that no holder of Allowed Claims or Interests in any

junior Class may receive or retain any property on account of such Claims or

Interests.  The strict requirement as to the allocation of full value to

dissenting Classes before junior Classes can receive a distribution is known

as the "absolute priority rule."  The Columbia Plan meets the requirements of

the absolute priority rule since each Unsecured Creditor will be receiving

property under that Plan of a value, as of the Effective Date, equal to the

Allowed amount of its Claim.(2)

      In addition, the "fair and equitable" standard has also been interpreted

to prohibit any class senior to a dissenting class from receiving under a plan

more than one hundred percent of its Allowed Claims.  The Columbia Plan

complies with that requirement with respect to all claims of Creditors and the

holders of Columbia Common Stock.

               (ii) THE PLAN MUST NOT DISCRIMINATE UNFAIRLY

      As a further condition to approving a cram-down, the Bankruptcy Court

must find that the Columbia Plan does not "discriminate unfairly" in its

treatment of dissenting Classes.  






- --------------------------
(2)   The "fair and equitable" standard also applies to dissenting
      classes of secured claims, however, other than the DIP
      Facility Claim which is being paid in full, in cash, on the
      Effective Date, there are no classes of secured claims under
      the Columbia Plan.

                                     IX-19
<PAGE>   355
The Columbia Plan contains classifications of impaired Claims which Columbia

believes are reasonable, appropriate and fair.  See Section IX.4.a,

"Classification of Claims and Interests".

      Columbia reserves the right to seek to confirm the Columbia Plan

pursuant to the cramdown provisions, and may, if necessary, modify the

Columbia Plan in order to comply with such cram-down requirements.

               b.   LIQUIDATION

      See Section X.C, "Best Interests Test Analysis".

      C.   VOTING PROCEDURES AND REQUIREMENTS

           1.  VOTING REQUIREMENTS - GENERALLY

      Pursuant to the Bankruptcy Code, only Classes of Claims against or

Interests in Columbia that are Allowed pursuant to section 502 of the

Bankruptcy Code and that are "impaired" under the terms and provisions of the

Columbia Plan are entitled to vote to accept or reject that Plan.  If Columbia

or any other party-in-interest has objected to a Claim or Interest, the holder

of such Claim will not be entitled to vote on the Columbia Plan unless the

Bankruptcy Court has entered a Final Order allowing such Claim or Interest or

unless otherwise permitted to vote by the Bankruptcy Court.  In addition, any

holder of a Claim that is listed on the Schedule of Liabilities as contingent,

disputed or unliquidated and has not Filed a proof of Claim prior to the Bar

Date, will not be entitled to vote such Claim with regard to the Plan.  











                                     IX-20
<PAGE>   356
      Columbia or any other party-in-interest may seek an order of the

Bankruptcy Court temporarily allowing, for voting purposes only, certain

disputed claims.  

      Pursuant to the Bankruptcy Code, a Class is "impaired" if the legal,

equitable, or contractual rights attached to the Claims or Interests of that

Class are modified, other than by (i) curing defaults and reinstating maturity

or (ii) by payment in full in cash.  Classes of Claims and Interests that are

not impaired are not entitled to vote on the Columbia Plan, are conclusively

presumed to have accepted that Plan and will not receive a ballot.  The

classification of Claims and Interests under the Columbia Plan is summarized,

together with notations as to whether each Class or Interests is impaired or

unimpaired, in Sections II and VI of this Disclosure Statement.

      IF YOU HAVE A CLAIM THAT IS IMPAIRED UNDER THE COLUMBIA PLAN ENTITLING

YOU TO VOTE AND YOU DID NOT RECEIVE A BALLOT, RECEIVED A DAMAGED BALLOT, OR

LOST YOUR BALLOT, PLEASE CONTACT POORMAN - DOUGLAS AT ____________________. 

VOTING ON THE COLUMBIA PLAN BY A HOLDER OF ANY IMPAIRED CLAIM ENTITLED TO VOTE

ON THAT PLAN IS IMPORTANT.  IF YOU HOLD CLAIMS IN MORE THAN ONE CLASS, YOU MAY

RECEIVE MORE THAN ONE BALLOT.  YOU SHOULD COMPLETE, SIGN AND RETURN EACH

BALLOT YOU RECEIVE.

      In most cases, each ballot enclosed with this Disclosure Statement has

been encoded with the amount of your Claim for voting purposes.  If your Claim

is or may become a Disputed Claim this amount may not be the amount ultimately

Allowed for 








                                     IX-21
<PAGE>   357
purposes of distribution and the Class to which your Claim has been

attributed.  PLEASE FOLLOW THE DIRECTIONS CONTAINED ON THE ENCLOSED BALLOT

CAREFULLY.

      TO BE COUNTED, YOUR BALLOT MUST BE RECEIVED BY 5:00 P.M., PACIFIC

STANDARD TIME, ON _____________, 1995, AT THE ADDRESS SET FORTH ON THE

ENCLOSED PRE-ADDRESSED ENVELOPE, WHICH IS:

_______________________________________________________. ALTERNATIVELY,

CREDITORS MAY FAX THEIR BALLOTS TO COLUMBIA'S BALLOT TABULATION CENTER C/O

POORMAN-DOUGLAS CORPORATION  AT ____________________, BUT SUCH FAX MUST BE

RECEIVED BY 5:00 P.M., PACIFIC STANDARD TIME, ON ____________, 1995.  IT IS OF

THE UTMOST IMPORTANCE TO COLUMBIA THAT YOU VOTE PROMPTLY TO ACCEPT THE PLAN. 

      Votes cannot be transmitted orally.  Accordingly, you are urged to

return your signed and completed ballot(s) promptly.

      Any ballot received that is not duly executed shall be an invalid ballot

and shall not be counted for purposes of determining acceptance or rejection

of the Columbia Plan.  Any ballot received that does not indicate whether the

holder of the Claim or Interest is voting to accept or reject the Columbia

Plan will be counted as a vote to accept that Plan.  A vote may be disregarded

if the Bankruptcy Court determines, after notice and a hearing, that such

acceptance or rejection was not solicited or procured in good faith or in

accordance with the provisions of the Bankruptcy Code or if a Claim was voted

in bad faith.












                                     IX-22
<PAGE>   358

X.  REORGANIZED COLUMBIA

      A.   BUSINESS OF COLUMBIA GAS

      Following the Effective Date, Columbia, a Delaware holding company, and

its seventeen operating subsidiaries will continue to operate the businesses

of the System.  A description of the System's businesses is set forth in

Section III.A. above.  While no fundamental changes in those businesses are

anticipated in connection with confirmation of Columbia's Plan and the

occurrence of the Effective Date, Columbia believes that it will be in a

position to improve its financial results upon emergence from the Chapter 11

proceedings.  Upon emergence from Chapter 11, Columbia will no longer require

Bankruptcy Court approval for transactions considered to be outside the

ordinary course of business and management will no longer be required to focus

substantial time and effort on the Chapter 11 proceedings, resolution of

related disputes and the development of a plan of reorganization.  In

addition, Reorganized Columbia is expected to have improved access to the

capital markets and will no longer be burdened with the substantial expenses,

including professional fees, incurred in connection with the Chapter 11

proceedings.  For certain projected financial information with respect to

Reorganized Columbia, see Section X.B.








                                      X-1
<PAGE>   359

      B.   FINANCIAL PROJECTIONS; RECAPITALIZATION

           1.  INTRODUCTION

      As a condition to confirmation of the Columbia Plan, the Bankruptcy Code

requires, among other things, that the Bankruptcy Court determine that

confirmation is not likely to be followed by the liquidation or the need for

further financial reorganization of the debtor.  See "Voting Procedures and

Confirmation Requirements -- Confirmation Requirements" in Section IX.  For

purposes of determining whether the Columbia Plan satisfies this feasibility

standard, the management of Columbia analyzed the ability of Reorganized

Columbia to meet obligations under its Plan with sufficient liquidity and

capital resources to conduct its businesses.  In this regard, the management

of Columbia developed and periodically refined Columbia's business plan and

prepared certain projections of Columbia's operating profit, free cash flow,

and certain other items, for the five-year period (the "Projection Period")

from fiscal year 1995 through 1999.  Such projections, as adjusted to reflect

certain subsequent events, the terms of the Columbia Plan, and various

additional assumptions (the "Projections"), are summarized below.

      The Projections should be read in conjunction with the assumptions,

qualifications, and explanations set forth herein and the historical

consolidated financial statements 








                                      X-2
<PAGE>   360
and related notes thereto contained in the Columbia Annual Report attached

hereto as Exhibit 2.

      Columbia does not customarily publish its business plans and strategies

or make external projections or forecasts of its anticipated financial

position or results of operations.  Accordingly, Columbia (including

Reorganized Columbia) does not anticipate that it will, and disclaims any

obligation to, furnish updated business plans or projections to holders of

Claims or Interests prior to the Effective Date, except as may be necessary to

meet legal requirements for Confirmation of the Columbia Plan, or to

stockholders or debtholders after the Effective Date, or to include such

information in documents required to be filed with the SEC or otherwise make

such information public.

           2.  PRINCIPAL ASSUMPTIONS

      The Projections are based on and assume the successful implementation of

Columbia's business plan.  Columbia's current business plan, reviewed by its

Bankruptcy Court-approved financial advisors, was presented confidentially to

the Columbia Creditors' and Equityholders' Committees.  From time to time as

adjustments have been made thereto, Columbia has furnished representatives of

the Columbia Creditors' and Equityholders' Committees detailed information

relating to its business plan, including its underlying assumptions, and

computations of projected financial results. 









                                      X-3
<PAGE>   361

      Both Columbia's business plan and the Projections reflect numerous

assumptions, including various assumptions with respect to the anticipated

future performance of Columbia, industry performance, general business and

economic conditions and other matters, most of which are beyond the control of

Columbia.  In addition, unanticipated events and circumstances may affect the

actual financial results of Columbia.  THEREFORE, WHILE THE PROJECTIONS ARE

PRESENTED WITH SOME SPECIFICITY, THE ACTUAL RESULTS ACHIEVED THROUGHOUT THE

PROJECTION PERIOD WILL LIKELY VARY FROM THE PROJECTED RESULTS, AND THESE

VARIATIONS MAY BE MATERIAL.  ACCORDINGLY, NO REPRESENTATION CAN BE, OR IS

BEING, MADE WITH RESPECT TO THE ACCURACY OF THE PROJECTIONS OR THE ABILITY OF

COLUMBIA TO ACHIEVE THE PROJECTED RESULTS.  See "Risk Factors" for a

discussion of certain factors that may affect the future financial performance

of Columbia and of various risks associated with the securities of Reorganized

Columbia to be issued pursuant to the Columbia Plan.

      While the management of Columbia believes that the assumptions

underlying the Projections for the Projection Period, when considered on an

overall basis, are reasonable in light of current circumstances, no assurance

can be, or is being, given that the Projections will be realized.  As

indicated below, the business plan on which the Projections are based assumes,

among other things, that the nature of the System's operations does not change

in any significant 







                                      X-4
<PAGE>   362
manner; no significant acquisition or disposition of assets or businesses of

the System occurs during the Projection Period; no significant new regulatory

schemes are adopted which require major changes in the business of the System;

applicable regulatory bodies set rates at levels which allow Columbia and its

subsidiaries to recover their costs and a reasonable return on rate base; and

certain anticipated levels of oil and gas prices are achieved.  

      The Projections are also based on certain assumptions regarding the

amount of cash and the principal amount of New Indenture Securities to be

issued to the holders of Class 3.2 Claims pursuant to the Columbia Plan and

the financial terms of those securities, the DECS and the New Preferred Stock. 

Those assumptions are illustrative only.  The actual amount of cash, if any,

and the actual principal amount of New Indenture Securities issued to holders

of those Claims and the financial terms of the New Indenture Securities, the

DECS and the New Preferred Stock may differ substantially from those reflected

in the Projections.

      COLUMBIA STOCKHOLDERS AND CREDITORS ENTITLED TO VOTE ON THE COLUMBIA

PLAN MUST MAKE THEIR OWN DETERMINATIONS AS TO THE REASONABLENESS OF SUCH

ASSUMPTIONS AND THE RELIABILITY OF THE PROJECTIONS IN REACHING THEIR

DETERMINATIONS OF WHETHER TO ACCEPT OR REJECT THAT PLAN.








                                      X-5
<PAGE>   363

      Additional information relating to the principal assumptions used in

preparing the Projections is set forth below.

               a.   COLUMBIA AND TCO PLAN ASSUMPTIONS

     (i)  The Effective Date of each of the TCO Plan and the Columbia Plan is

December 31, 1995; and on that date each of those Plans is consummated on

substantially the terms described in the TCO Disclosure Statement and this

Disclosure Statement, respectively.  Payouts by each of TCO and Columbia are

$3.9 billion.

    (ii)  On the Effective Date, Columbia, in respect of Class 3.1 and 3.2

Claims (w) pays $900 million in cash, (x) issues $200 million of DECS, (y)

issues $200 million of New Preferred Stock and (z) issues $2.1 billion of New

Indenture Securities.

   (iii)  Cash payments in the aggregate amount of approximately $237 million

are made by Columbia to TCO and Columbia's Creditors (other than holders of

Class 3.1 and 3.2 Claims) on the Effective Date pursuant to the Columbia Plan,

excluding for this purpose amounts received by Columbia from TCO in respect of

Columbia's Claims against TCO that are immediately reinvested in TCO.

    (iv)  All holders of Securities Claims accept the settlement proposed in

the Columbia Plan.












                                      X-6
<PAGE>   364
     (v)  All Producers accept their settlement values set forth in the TCO

Plan; and all Customers accept the settlement embodied in that Plan.

    (vi)  No payments are made by Columbia or TCO during the Projection Period

in respect of other obligations assumed by Columbia or TCO pursuant to the

Columbia Plan or the TCO Plan, other than (x) to the extent set forth below,

environmental obligations, (y) obligations incurred in the ordinary course of

business under assumed contracts and (z) payments to be made pursuant to the

IRS Closing Agreement over the six-year period following the Effective Date as

described in Section VI.1.b, "Priority Tax Claims".

               b.   FINANCING ASSUMPTIONS

      (i)  The holders of DECs receive annual cumulative dividends at a rate

of 8.75% per annum.  On the fourth anniversary of the Effective Date, each DEC

is mandatorily converted into one share of Common Stock as described in

Section X.E.3.--"Securities to be Issued pursuant to the Plan--Equity DECS

(Dividend Enhanced Convertible Stock)".  No DECS are converted into Common

Stock at the option of the holder prior to that date.

    (ii)  The holders of New Preferred Stock are entitled receive annual

cumulative dividends at a rate of 8.75% per annum.   The New Preferred Stock

remains outstanding throughout the Projection Period.









                                      X-7
<PAGE>   365
   (iii)  The weighted average coupon rate of the New Indenture Securities is

8.5% per annum.  No principal of the New Indenture Securities is paid during

the Projection Period.

    (iv)  Dividends on the Common Stock of $0.50 per share per annum commence

in the second quarter of 1996 with subsequent increases of $0.10 per annum

during the Projection Period.  The only issuance of Common Stock after the

Effective Date and prior to the end of the Projection Period is the resale in

1996 of the approximately 1.4 million shares of Common Stock to be repurchased

from the LESOP trust on the Effective Date. 

     (v)  The average aggregate outstanding balance under the Term Facility

and the Revolving Facility during the Projection Period is approximately $530

million and the average interest rate on such balance is 7.5%.

               c.   BUSINESS, REGULATORY AND GENERAL ECONOMIC ASSUMPTIONS

     (i)  Average annual inflation during the Projection Period ranges from

2.5% to 3% based on the GDP implicit price deflator.

    (ii)  The nature of the System's operations does not change in any

significant manner.  No significant acquisition or disposition of assets or

businesses of the System occurs during the Projection Period.  

   (iii)  An additional non-cash charge for environmental matters and higher

operating expenses at TCO is incurred in 








                                      X-8
<PAGE>   366
1995.  TCO, which has not implemented a general rate increase since 1991,

implements such a case before year-end 1996.  Compensatory returns are

realized beginning in 1996 and beyond in the rate-regulated transmission and

distribution segments as a result of the recovery in rates of investments made

to serve Columbia's new and existing customers.  In that regard, it is assumed

that applicable state and federal regulatory bodies set rates at levels which

allow Columbia and its regulated subsidiaries to recover their costs, giving

effect to general inflation, and a reasonable return on rate base, in a manner

consistent with past practice.  No significant new regulatory schemes are

adopted which require major changes in the business of the System or any of

its component parts.  TCO completes a phased market expansion in the 1997-1999

timeframe; and Columbia's distribution companies add approximately 35,000 new

customers annually.  

    (iv)  Oil and gas operating income increases result primarily from higher

forecasted energy commodity prices and, to a lesser extent, higher production

volumes.  The average annual West Texas Intermediate oil price and gas price

located at the Henry Hub in Louisiana for 1995 are $18.50/Bbl and $1.65/MMbtu,

respectively.  Therefore, the price of both fuels increases gradually

throughout the Projection Period in response to projections for rising

domestic demand and resource depletion.  Other energy 









                                      X-9
<PAGE>   367
operation results improve as a result of the planned expanded operations of

Columbia Energy Services' market center in Pittsburgh, Pennsylvania and from

additional investments in power plants and other new markets by TriStar.

     (v)  Columbia's long-term debt to equity ratio decreases from

approximately 62% at the end of 1995 to approximately 54% by the end of 1999.

    (vi)  System capital expenditures approximate $500 million per year during

the Projection Period with both transmission and distribution operations

making significant new investments to replace and upgrade existing facilities. 

This level of capital expenditures is based on the assumption regarding oil

and gas prices during the Projection Period set forth above.

   (vii)  TCO's expenditures for environmental assessment and remediation

average approximately $20 million per year during the Projection Period.  A

substantial portion of these costs are recovered through customer rates and/or

insurance proceeds.

               d.   TAX ASSUMPTIONS

      1.   The System's 1995 Net Operating Loss ("NOL") of approximately $1.2

billion is partially monetized in 1996 by obtaining a refund of taxes

previously paid in tax years 1992, 1993 and 1994.  The remaining NOL is

monetized in the future as it is used to offset operating income and the 










                                     X-10
<PAGE>   368
minimum tax credits that are created are utilized to offset a portion of the

Columbia Group's regular tax liability.  A refund from the settlement of the

1991-92 tax audit is received in 1997. 

           3.  PROJECTIONS

      Proforma financial statements in the form of Projected Condensed Income

Statements, Projected Condensed Cash Flow Statements and Projected Condensed

Balance Sheets are set forth below.  Those financial statements also include

actual condensed financial information for 1994.  




                              COLUMBIA GAS SYSTEM
                            FIVE-YEAR BUSINESS PLAN
                     PROJECTED CONDENSED INCOME STATEMENTS
                                 ($ MILLIONS)

<TABLE>
<CAPTION>
                                               1994           1995          1996            1997            1998           1999  
                                             -------        -------       -------         -------         -------        -------
<S>                                          <C>            <C>           <C>             <C>             <C>            <C>
 Operating Revenues                          2,833.4        2,957.8       3,255.5         3,571.9         3,745.1        3,933.5 
                                         
 Operating Expenses:                     
   Products Purchased                          976.7        1,088.4       1,223.0         1,409.6         1,477.4        1,560.2 
   Operation and Maintenance                 1,012.8        1,082.2       1,086.6         1,128.9         1,171.5        1,216.0 
   Depreciation and Depletion                  261.7          275.7         295.5           315.0           326.0          339.4 
   Taxes Other than Income                     209.0          220.0         229.3           245.3           259.0          273.7 
                                             -------        -------       -------         -------         -------        -------
                                         
   Total Operating Expenses                  2,460.2        2,666.3       2,834.4         3,098.8         3,233.9        3,389.3 
                                             -------        -------       -------         -------         -------        -------
                                         
 Operating Income                              373.2          291.5         421.1           473.1           511.2          544.2 
                                         
 Other Income (Deductions):              
   Interest Income and Other, Net               46.1           22.3          23.0            18.5            14.7           17.1 
   Interest Expense and Related Charges        (14.8)        (978.3)       (205.4)         (195.8)         (196.2)        (200.2)
   Reorganization Items, Net                   (12.3)        (374.4)         --              --              --             --   
                                         
   Total Other Income (Deducts)                 19.0       (1,330.4)       (182.4)         (177.3)         (181.5)        (183.1)
                                             -------        -------       -------         -------         -------        -------
                                         
   Income before Income Taxes                  392.2       (1,038.9)        238.7           295.8           329.7          361.1 
   Income Taxes                                146.0         (356.8)         89.6           110.8           121.2          133.7 
                                             -------        -------       -------         -------         -------        -------
                                         
 Income before Extraordinary Charges           246.2         (682.1)        149.1           185.0           208.5          227.4 
</TABLE>                                         










                                     X-11
<PAGE>   369
                              COLUMBIA GAS SYSTEM
                            FIVE-YEAR BUSINESS PLAN
                     PROJECTED CONDENSED INCOME STATEMENTS
                                 ($ MILLIONS)

<TABLE>
<CAPTION>
                                               1994           1995          1996            1997            1998           1999  
                                             -------        -------       -------         -------         -------        -------
<S>                                          <C>            <C>           <C>             <C>             <C>            <C>
                                       
 Extraordinary Items (net)                      --            288.1          --              --              --             --   
 Change in Accounting                           (5.6)          --            --              --              --             --   
                                             -------        -------       -------         -------         -------        -------
                                       
 Net Income                                    240.6         (394.0)        149.1           185.0           208.5          227.4 
                                       
 Preferred Dividend Payments                    --             --            35.0            35.0            35.0           35.0 
                                             -------        -------       -------         -------         -------        -------
                                       
 Earnings on Common Stock                      240.6         (394.0)        114.1           150.0           173.5          192.4 
                                             =======        =======       =======         =======         =======        =======

 Primary Earnings per Share                  $   4.76      $  (7.79)       $  2.30         $  2.93        $   3.34       $   3.67
 (DECS converted at $30/share)         
                                       
 Fully Diluted Earnings per Share      
   (DECS converted at $25/share)             $   4.76      $  (7.79)       $  2.25         $  2.86        $   3.26       $   3.58
</TABLE>                                       








                                     X-12
<PAGE>   370
                              COLUMBIA GAS SYSTEM
                            FIVE-YEAR BUSINESS PLAN
                      PROJECTED CONDENSED BALANCE SHEETS
                                 ($ MILLIONS)

<TABLE>
<CAPTION>
                                                 1994           1995          1996           1997            1998            1999  
                                              -------         -------       -------        -------         -------         -------
<S>                                           <C>             <C>           <C>            <C>             <C>             <C>
 Net Property, Plant, and Equipment           4,081.0         4,329.7       4,466.9        4,707.4         4,926.9         5,133.1 
 Investments and Other Assets                   306.4           208.9         176.7          103.5           113.4           123.2 
 Current Assets:                         
  Cash                                        1,481.8             1.0           1.0            1.0             1.0             1.0 
  Accounts Receivable                           561.4           516.6         479.0          449.8           475.5           469.7 
  Gas Inventory                                 230.3           225.8         225.3          223.8           222.9           223.1 
  Other Current Assets                          211.6           446.1         437.0          403.7           380.4           354.2 
                                              -------         -------       -------        -------         -------         -------
 Total Current Assets                         2,485.1         1,189.5       1,142.3        1,078.3         1,079.8         1,048.0 
 Deferred Charges                               292.4           298.7         292.1          288.7           289.5           287.5 
                                              -------         -------       -------        -------         -------         -------
 Total Assets                                 7,164.9         6,026.8       6,078.0        6,177.9         6,409.6         6,591.8 
                                              =======         =======       =======        =======         =======         =======
 Capitalization:                         
  Equity                                      1,468.0         1,474.0       1,598.3        1,717.8         1,855.8         2,008.0 
  Long Term Debt                                  4.3         2,432.3       2,265.4        2,232.8         2,308.6         2,326.7 
                                              -------         -------       -------        -------         -------         -------
  Total Capitalization                        1,472.3         3,906.3       3,863.7        3,950.6         4,164.4         4,334.7 
                                         
 Current Liabilities:                    
  Short-Term Debt                                 1.2           300.0         300.0          300.0           300.0           300.0 
  Rate Refunds Payable                           92.2            76.6          39.3           45.5            45.6            46.2 
  Other Current Liabilities                     766.5           621.2         742.5          759.1           775.4           785.4 
                                              -------         -------       -------        -------         -------         -------
 Total Current Liabilities                      859.9           997.8       1,081.8        1,104.6         1,121.0         1,131.6 
 Liabilities Subject to Chapter 11                                                                                                 
   Proceedings                                3,988.9            --             --            --              --              --   
 Other Non-Current Liabilities                  843.8         1,122.7       1,132.5        1,122.7         1,124.2         1,125.5 
                                              -------         -------       -------        -------         -------         -------
 Total Capitalization and Liabilities         7,164.9         6,026.8       6,078.0        6,177.9         6,409.6         6,591.8 
                                              =======         =======       =======        =======         =======         =======

</TABLE>





                                     X-13
<PAGE>   371
                              COLUMBIA GAS SYSTEM
                            FIVE-YEAR BUSINESS PLAN
                     PROJECTED CONDENSED CASH FLOW SHEETS
                                 ($ MILLIONS)
                                       
<TABLE>
<CAPTION> 
                                                1994            1995          1996           1997            1998            1999  
                                                ------         -------       -------        -------         -------         -------
<S>                                             <C>           <C>            <C>            <C>             <C>             <C>
 Cash from Operations:                      
   Net Income                                    240.6          (394.0)        149.1          185.0           208.5           227.4 
   Depreciation and Depletion                    261.7           275.7         295.5          315.0           326.0           339.4 
   Deferred Income Taxes (non-current)            72.2           274.7          19.3           (2.1)            9.8            10.0 
   Reorganization Items, Net                      16.9        (1,515.6)         --             --              --              --   
   Other (net)                                   (41.9)           47.3          (2.9)          (4.3)           (9.1)           (6.7)
   Change in Working Capital                      23.3          (343.0)        144.4          118.1           (29.8)           (0.7)
                                                ------         -------       -------        -------         -------         -------
                                            
 Net Cash from Operations                        572.8        (1,654.9)        605.4          611.7           505.4           569.4 
                                            
 Investment Activities:                     
   Capital Expenditures                          433.6           465.7         428.7          515.0           512.0           513.6 
   Other                                           1.3           (25.2)         --             --              --              --   
                                                ------         -------       -------        -------         -------         -------
                                            
 Net Investment Activities                       434.9           440.5         428.7          515.0           512.0           513.6 
                                                ------         -------       -------        -------         -------         -------
                                            
 Net Cash before Financing Activities            137.9        (2,095.4)        176.7           96.7            (6.6)           55.8 
                                            
 Financing Activities:                      
   Debt Financing                                  3.5           650.0        (167.0)         (32.4)           75.8            18.1 
   Equity Financing                               --             (35.4)         35.5           --              --              --   
   Dividend Payments                               --             --           (45.2)         (64.3)          (69.2)          (73.9)
                                                ------         -------       -------        -------         -------         -------
 Net Financing Activities                          3.5           614.6        (176.7)         (96.7)            6.6           (55.8)
                                                ------         -------       -------        -------         -------         -------
                                            
 Change in Cash and Equivalents                  141.4        (1,480.8)         --             --              --              --   
                                                ======         =======       =======        =======         =======         =======
 Supplemental Cash Flow Disclosures:        
 -----------------------------------
   Interest Paid                                   0.8           995.8         208.3          198.0           199.6           203.2 
   Income Taxes Paid                              38.8            77.2        (102.1)          43.6            88.8           102.3 
</TABLE>

<TABLE>                                            
<CAPTION>
  Supplemental Schedule of 1995 Noncash Financing Activity:
  ---------------------------------------------------------
<S>                                                          <C>
    Extinguishment/Retirement of Historical                   (2,382.0)
      Indebtedness                                       
    Interest Expense not Paid in Cash                            (96.1)
    Issuance of New Long-Term Debt                             2,078.1 
    Issuance of DECS                                             200.0 
    Issuance of Preferred Stock                                  200.0
                                                              --------
                                                         
    Total                                                         --   
                                                              ========
</TABLE>                                                       







                                     X-14
<PAGE>   372
      C.   BEST INTERESTS TEST ANALYSIS

      As described above in Section IX.B. under the caption "Best Interests

Test", if any Interest holders or any Columbia Claim holders voting in an

impaired Class reject the Columbia Plan, the Bankruptcy Court must determine

whether that Plan satisfies the "best interests" test.  To meet that test, the

Columbia Plan must provide value to dissenting impaired Interest and Claim

holders which is not less than the value which would be distributed in a

Chapter 7 liquidation.

      In the case of a hypothetical liquidation of Columbia, the Liquidation

Value available to holders of Interests and Claims would be reduced by, among

other things, (i) the costs, fees, and expenses of the liquidation, as well as

other administrative expenses of Columbia's Chapter 7 case, (ii) unpaid

Administrative Claims of the Columbia Reorganization Case, including tax

liabilities in respect of gain arising from the disposition of assets, and

(iii) priority claims, including pre-petition priority state and federal tax

claims.  Columbia's costs of liquidation in a Chapter 7 case thus would

include the compensation of a trustee, as well as counsel and other

professionals retained by such trustee, asset disposition expenses, applicable

taxes, litigation costs, Claims arising from the operation of the System

during the pendency of the Chapter 7 case, and all unpaid Administrative

Claims incurred by Columbia during 









                                      X-15
<PAGE>   373
the Reorganization Case that are allowed in Chapter 7 cases.  Additional costs

might be incurred in securing required approvals under the HCA and from FERC

and state regulatory authorities in connection with the liquidation.  The

liquidation itself would likely accelerate the payment of other priority

Claims that would otherwise be payable in the ordinary course of business. 

These priority Claims would be paid in full out of the net liquidation

proceeds before the balance would be made available to pay Claims of creditors

or to make any distribution in respect of Interests.  Columbia believes that

the liquidation would also generate a significant increase in Claims, on an

accelerated basis.

      Columbia believes that its creditors and Interest holders will receive

or retain value as of the Effective Date (or thereafter in the case of Claims

that are not liquidated as of the Effective Date) under the Columbia Plan that

is at least equal to, and is likely to be greater than, the value such

creditors and Interest holders would receive under a Chapter 7 liquidation.

      Pursuant to the Columbia Plan, (a) holders of Class 3.2 Claims (Claims

for Borrowed Money in excess of $15,000) will receive a combination of cash,

if available therefor (as determined by Columbia), each Series of New

Indenture Securities, DECS and New Preferred Stock with an aggregate face

amount, when added to the cash, if any, to be distributed, equal to the amount

of such Claims (plus post-









                                      X-16
<PAGE>   374
petition interest and interest on missed interest payments as provided in that

Plan), provided that holders of Class 3.2 Claims that elect the Cash-Out

Election will be entitled, subject to the conditions described herein, to have

Columbia repurchase the DECS and New Preferred Stock that they have received

on the Effective Date under the Columbia Plan at a price equal to the face

amount of those securities less underwriting commissions and discounts plus

accrued and unpaid dividends thereon, (b) holders of Securities Action Claims

qualifying under the terms of the Offer of Settlement will receive the

settlement values provided for in the Columbia Plan and (c) holders of

Interests will continue to hold such Interests.  Columbia believes that this

treatment satisfies the "best interests" requirements of the Bankruptcy Code. 

The net recovery available for distribution to the holder of an Interest or a

Claim upon the liquidation of Columbia would be reduced and adversely affected

by each of the factors described above, as well as substantial liquidation

discounts and costs that would be incurred in the sale of assets on a

piecemeal subsidiary-by-subsidiary basis.  In the event of actual liquidation

of Columbia, distributions to Creditors would be made substantially later than

is provided for in the Columbia Plan.  This delay would materially reduce the

amount determined on a present value basis available for distribution to

Creditors and holders of Interests.  









                                      X-17
<PAGE>   375
      In addition, the Columbia Plan embodies a proposed resolution in respect

of (a) the amounts to be paid to holders of Borrowed Money Claims in respect

of post-petition interest and interest on missed interest payments and (b) the

amounts to be paid to holders of Securities Action Claims in respect of those

Claims.  Columbia believes that holders of such Claims would be unlikely to

receive more in respect of such interest or Claims, as applicable, in the

context of a litigated Chapter 7 liquidation.  In a Chapter 7 liquidation, the

settlements of the Borrowed Money Claims and Securities Actions Claims would

not be consummated and the issues between the holders of those Claims and

Columbia would be fully litigated by the parties.

      In summary, Columbia believes that a Chapter 7 liquidation of Columbia

would result in substantial diminution in the value to be realized by holders

of Interests and Claims, as compared to the proposed provisions of the

Columbia Plan, because of, among other factors, (i) the possibility that a

liquidation sale of Columbia would not realize the full going concern value of

Columbia's assets, (ii) additional administrative expenses involved in the

appointment of a liquidating trustee, as well as attorneys, financial

advisors, accountants and other professionals to assist such trustee,

(iii) additional expenses and substantial tax liabilities, some of which would

be entitled to priority in payment, which would arise 







                                      X-18
<PAGE>   376
by reason of the liquidation and (iv) the substantial delay before holders of

Interests and Claims would receive any distribution in respect of their

Interests and Claims.  Consequently, Columbia believes that the Columbia Plan,

which provides for the payment in full of all Class 3.2 Claims for Borrowed

Money, the payment of the settlement values set forth therein in respect of

the Securities Action Claims and the continuation of Columbia's businesses,

will provide payment of an amount and an ultimate return to holders of Claims

and Interests, respectively, that is at least equal to that which would be

provided by a Chapter 7 liquidation.

      D.   PRICING OF SECURITIES

      The securities to be issued pursuant to the Columbia Plan will be priced

based on formulae developed by Salomon (the "Pricing Formulae") and set forth

in Exhibit 4 to this Disclosure Statement.  The Pricing Formula for

determining the interest rate for each Series of New Indenture Securities is

based on the spreads of (x) an interpolation of yields based on average yields

of baskets of debt securities identified in Exhibit 5 over (y) an

interpolation of the yields of U.S. treasury securities having similar

maturities and trading closest to par during a specified period ending five

business days prior to the Effective Date, adjusted to take account of call

provisions.  The identified securities were selected to be comparable to the 








                                      X-19
<PAGE>   377
New Indenture Securities and are subject to substitution or elimination if

they do not remain comparable to those securities.  Factors involved in

determining comparability include the industry of the issuer of the securities

and the rating of the securities.  The dividend rate for the New Preferred

Stock will be determined based on a comparison, during a specified period

ending five business days prior to the Effective Date, of the "trading prices"

(as defined in Exhibit 4) and dividend yields of a basket of identified

preferred issues that are comparable to the New Preferred Stock, adjusted for

call provisions, and subject to substitution or elimination as described

above.  The issue price of the DECS will be the market price of the Common

Stock on the fifth business day prior to the Effective Date.  The dividend

rate for the DECs and the extent to which a holder of DECS will share in

appreciation in the Common Stock upon conversion of the DECS will be

determined five business days prior to the Effective Date and will be designed

to cause the DECS to trade at a market price equal to the market price of the

Common Stock.

      Salomon has advised Columbia that the objective of the Pricing Formulae

was for the New Indenture Securities, upon their issuance on the Effective

Date, to trade at par and for the New Preferred Stock and DECS, upon their

issuance on the Effective Date, to trade at their face amount.  There can be

no assurances, however, that those securities will in 








                                      X-20
<PAGE>   378
fact trade at par or their face amount, as applicable, because, among other

things, the comparisons with other securities to be made pursuant to the

Pricing Formulae will be made over a specified period ending five business

days prior to the Effective Date.  In addition, the trading prices of the New

Indenture Securities, DECS and New Preferred Stock will fluctuate after the

Effective Date with changes in prevailing interest rates, dividend rates,

market conditions, general economic conditions, industry conditions, the

conditions and prospects (financial and otherwise) of Columbia and other

factors which influence generally the price of securities.  For a discussion

of other factors that might affect the trading prices of the securities to be

issued pursuant to the Columbia Plan, see Section VII.B, "Risk Factors - Lack

of Established Market for the New Indenture Securities, DECS and New Preferred

Stock; Volatility".

      E.   SECURITIES TO BE ISSUED PURSUANT TO THE PLAN

           1.  INTRODUCTION

      As of the Effective Date, Columbia will issue (i) New Indenture

Securities in an aggregate principal amount of up to $3.0 billion, subject to

adjustment as described in Section VI.A.2.d to reflect the actual amount of

cash, if any, distributed pursuant to the Columbia Plan in respect of Claims

for Borrowed Money, pursuant to an Indenture dated as of [    ], 1995 (the

"New Indenture"), between Columbia and 







                                      X-21
<PAGE>   379
[       ], as Trustee (the "Trustee"), (ii) $200 million of DECS and

(iii) $200 million of New Preferred Stock; provided, however, that in the

event holders of Class 3.2 Claims elect the Cash-Out Election and the Take-Out

Offering is consummated, Columbia may issue, in an amount equal to the DECS or

New Preferred Stock repurchased by it in connection with the Cash-Out

Election, Other Securities.  As more fully described in Section VI.A.2.d under

the caption "Class 3.2-Borrowed Money Claims", the New Indenture Securities,

DECS and the New Preferred Stock will be issued to Columbia Creditors in

respect of their Claims, subject, in the case of DECS and New Preferred Stock,

to repurchase by Columbia if holders of Class 3.2 Claims elect the Cash-Out

Election and the Take-Out Offering is completed or Columbia otherwise agrees

to repurchase those securities.  As described below under the caption "Other

Post-Reorganization Debt", Columbia also expects to enter into a Term Credit

Facility and a Revolving Credit Facility on the Effective Date.

      Set forth below are brief descriptions of the key features of the New

Indenture Securities, the DECS and the New Preferred Stock and of the Common

Stock issuable upon conversion or redemption of the DECS.  More complete

descriptions of those securities (including definitions of certain capitalized

terms) are set forth in Exhibit 4 hereto, which all holders of Claims against,

and equity 









                                      X-22
<PAGE>   380
Interests in Columbia are encouraged to read in their entirety.

           2.  INDENTURE SECURITIES

      The New Indenture Securities will be issued in seven Series, each in an

aggregate initial principal amount which is no less than 70% of the principal

amount of any other Series of New Indenture Securities, with the respective

maturities set forth below.

<TABLE>
<CAPTION>
 Series                        Maturity
 ------                        --------
<S>                            <C>
 Series A                       5 years
 Series B                       7 years
 Series C                      10 years
 Series D                      12 years
 Series E                      15 years
 Series F                      20 years
 Series G                      30 years
</TABLE>



     Each New Indenture Security will bear interest from the Effective Date,

payable semi-annually on dates to be determined, for each Series of New

Indenture Securities, by Columbia prior to the Effective Date, to the

registered holder thereof at the close of business on the applicable record

date therefor.  The rate of interest to be borne by the New Indenture

Securities of each Series will be determined prior to the Effective Date in

accordance with the Pricing Formula therefor as described above in this

Section X under the caption "Pricing of Securities".

     Principal of each Series of New Indenture Securities will be payable on

the maturity date therefor set forth above.  The New Indenture Securities will

be issued only in 








                                      X-23
<PAGE>   381
denominations of $1,000 or any integral multiple thereof.  New Indenture

Securities will be issued only in book-entry form, will not be exchangeable

for New Indenture Securities in certificated form at the option of the Holder

and, except in certain limited circumstances, will not otherwise be issuable

in definitive form.

     Series A, Series B and Series C New Indenture Securities may not be

redeemed.  Series C, Series D and Series E New Indenture Securities may be

redeemed at the option of Columbia after year 10 at par.  Series F New

Indenture Securities may be redeemed at the option of Columbia after year 10

at a premium of the principal amount equal to the coupon of such Securities in

year 1 declining ratably to zero in year 15.  Series G New Indenture

Securities may be redeemed at the option of Columbia after year 10 at a

premium of the principal amount equal to the coupon of such Securities in

year 1 declining ratably to zero in year 20.

     The New Indenture contains customary affirmative covenants and customary

limitations on Columbia's ability to merge or engage in other business

combinations.  The New Indenture also contains limitations on the ability of

Columbia's Significant Subsidiaries to incur long-term debt owed to third

parties and a negative pledge with respect to Columbia, subject, in each case,

to customary exceptions and exceptions for current asset financings and

natural resource 








                                      X-24
<PAGE>   382
production loans.  The New Indenture does not include any financial covenants

or any limitations on the amount of unsecured debt that can be incurred by

Columbia. 

     The New Indenture contains the following Events of Default:  (i) defaults

in payment of the New Indenture Securities; (ii) failures to comply with

covenants; and (iii) certain events of insolvency with respect to Columbia;

subject, as applicable, to customary grace periods.

     Columbia may, at any time, terminate (i) all its obligations under the

New Indenture Securities and the New Indenture ("Legal Defeasance Option") or

(ii) its obligations to comply with certain restrictive covenants ("Covenant

Defeasance Option"), provided that Columbia irrevocably deposits in trust with

the Trustee money or U.S. Government Obligations for the payment of principal

of and interest on the New Indenture Securities to maturity or redemption, as

the case may be.  The only condition to defeasance, in addition to a 90-day

hiatus in the case of the Legal Defeasance Option, shall be that (i) no

default exists or occurs and (ii) Columbia obtains a certificate from a firm

of nationally recognized independent accountants that the deposited U.S.

Government Obligations will be sufficient to pay principal of and interest on

the New Indenture Securities to be defeased when due.

     The New Indenture Securities will be general unsecured senior obligations

of Columbia.










                                      X-25
<PAGE>   383
          3.   EQUITY DECS (DIVIDEND ENHANCED CONVERTIBLE STOCK)(TM)

The DECS will constitute shares of Convertible Preferred Stock and rank on a

parity with the New Preferred Stock and prior to Common Stock and the Series A

Preferred Stock (defined in Section V.F.16), in each case as to payment of

dividends and distribution of assets upon liquidation.  Each share of DECS

will be issued at a price equal to the market price of a share of the Common

Stock of Columbia on the fifth business day prior to the Effective Date (the

"Issue Price").

     The holders of DECS will be entitled to receive, when, as and if

dividends on the DECS are declared by the board of directors of Columbia out

of funds legally available therefor, cumulative preferential dividends from

the Effective Date, accruing at the rate per share per annum that is

determined in accordance with the applicable Pricing Formula, payable

quarterly in arrears.  Dividends are payable in cash or, in connection with

certain redemptions by Columbia, in shares of Common Stock.  Accumulated

unpaid dividends will not bear interest.

     On the Mandatory Conversion Date (the fourth anniversary of the Effective

Date), each outstanding share of DECS will convert automatically into shares

of Common Stock at the Conversion Rate in effect on such date and the right to

receive an amount in cash equal to all accrued and unpaid dividends on such

DECS to the Mandatory Conversion 














                                      X-26
<PAGE>   384
Date, subject to the right of Columbia to redeem the DECS on or after the

Initial DECS Redemption Date and prior to the Mandatory Conversion Date, as

described below, and subject to the conversion of the DECS at the option of

the holder at any time prior to the Mandatory Conversion Date.  The Conversion

Rate will initially be one share of Common Stock for each DECS, and is subject

to adjustment as described below.

     Because the price of the Common Stock is subject to market fluctuations,

the value of the Common Stock received by a holder of DECS upon mandatory

conversion may be more or less than the Issue Price for the DECS.

     The DECS will not be redeemable by Columbia prior to the Initial DECS

Redemption Date (the third anniversary of the Effective Date).  At any time

and from time to time on or after the Initial DECS Redemption Date and prior

to the Mandatory Conversion Date, Columbia may redeem the outstanding DECS, in

whole or in part.  Upon any such redemption, each holder of DECS will receive,

in exchange for each DECS so called, a number of shares of Common Stock equal

to the Call Price of the DECS in effect on the date of redemption divided by

the Current Market Price of the Common Stock determined as of the date which

is one trading day prior to the public announcement of the call for

redemption.  The Call Price of each DECS will be the sum of (i) the Issue

Price therefor, (ii) a premium equal to the annual dividend 









                                      X-27
<PAGE>   385
on the DECS in the first quarter following the Effective Date declining

ratably to zero in the quarter immediately preceding the Mandatory Conversion

Date, and (iii) all accrued and unpaid dividends thereon to the date fixed for

redemption.  The public announcement of any call for redemption shall be made

prior to the mailing of the notice of such call to holders of DECS.

     The opportunity for equity appreciation afforded by an investment in the

DECS is less substantial than the opportunity for equity appreciation afforded

by an investment in the Common Stock because Columbia may, at its option,

redeem the DECS at any time on or after the Initial DECS Redemption Date and

prior to the Mandatory Conversion Date, and may be expected to do so prior to

the Mandatory Conversion Date if the market price of the Common Stock exceeds

the Conversion Price.  In such event, holders of the DECS will receive less

than one share of Common Stock for each DECS.  However, because holders of

DECS called for redemption will have the option to surrender DECS for

conversion at the Conversion Price up to the close of business on the

redemption date (and may be expected to do so if the market price of the

Common Stock exceeds the Conversion Price), a holder that elects to convert

will receive a percentage of a share of Common Stock for each DECS that will

be determined pursuant to the Pricing Formula for the DECS.  Because the

number of shares of Common Stock 







                                      X-28
<PAGE>   386
to be delivered in payment of the Call Price will be determined on the basis

of the market price of the Common Stock prior to the announcement of the call,

the value per share of the shares of Common Stock to be delivered may be more

or less than the Call Price on the date of delivery.

     The DECS will be convertible, in whole or in part, at the option of the

holders thereof, at any time prior to the Mandatory Conversion Date, unless

previously redeemed, into shares of Common Stock at a rate that will be

determined in accordance with the Pricing Formula for the DECS (the dollar

equivalent thereto per share of Common Stock is referred to as the "Conversion

Price"), subject to adjustment as described below.  The right to convert DECS

called for redemption will terminate immediately prior to the close of

business on the redemption date.

     The Conversion Rate for mandatory conversions and the Conversion Price

for optional conversions are both subject to adjustment in the event of

certain stock dividends or distributions, subdivisions, splits, combinations,

issuances of certain rights or warrants or distributions of certain assets

with respect to the Common Stock, as well as in the event of certain mergers

or other business combinations to which Columbia is a party.

     The liquidation preference of each of the DECS is an amount equal to the

sum of (i) the Issue Price and (ii) all 







                                      X-29
<PAGE>   387
accrued and unpaid dividends thereon to the date of liquidation, dissolution

or winding up.

     The holders of DECS shall not have voting rights except as required by

law and except as follows:  (i) if dividends on the DECS are in arrears and

unpaid for six quarterly dividend periods, the holders of the DECS (voting

separately as a class with holders of all other series of Preferred Stock

ranking on a parity with the DECS upon which like voting rights have been

conferred and are exercisable) will be entitled to vote, on the basis of one

vote for each of the DECS, for the election of two directors of Columbia, such

directors to be in addition to the number of directors constituting the board

of directors immediately prior to the accrual of such right, and (ii) the

holders of DECS will have voting rights with respect to certain alterations of

Columbia's Certificate of Incorporation.

     DECS redeemed for or converted into Common Stock or otherwise acquired by

Columbia will assume the status of authorized but unissued Preferred Stock and

may thereafter be reissued in the same manner as other authorized but unissued

Preferred Stock.

     Application will be made to list the DECS on the NYSE.

          4.   COMMON STOCK

     Subject to the rights of the holders of any Preferred Stock of Columbia

then outstanding, holders of Common Stock are entitled to one vote per share

on all matters to be 









                                      X-30
<PAGE>   388
voted on by Stockholders of Columbia, other than the election of directors. 

Voting for directors is cumulative; each Stockholder has votes equal to the

number of shares of Common Stock the Stockholder owns multiplied by the number

of directors to be elected and all votes can be cast for one nominee or

divided among more than one.  

     Subject to the rights of the holders of Preferred Stock, holders of

Common Stock are entitled to receive such dividends, if any, as may be

declared from time to time by the board of directors of Columbia in its

discretion out of funds legally available therefor.  Upon any liquidation or

dissolution of Columbia, holders of the Common Stock are entitled to receive

pro rata all assets remaining available for distribution to stockholders after

payment of all liabilities and provision for the liquidation of any shares of

any Preferred Stock at the time outstanding.  Common Stock has no preemptive

or other subscription rights, and there are no conversion rights or redemption

or sinking fund provisions with respect to such stock.  

          5.   NEW PREFERRED STOCK

     The New Preferred Stock will constitute shares of Preferred Stock with a

liquidation value of $25 per share and rank on a parity with the DECS and

prior to the Common Stock and the Series A Preferred Stock, in each case as to

payment of dividends and distribution of assets upon liquidation.








                                      X-31
<PAGE>   389

     The holders of New Preferred Stock will be entitled to receive, when, as

and if dividends on the New Preferred Stock are declared by the board of

directors of Columbia out of funds legally available therefor, cumulative

preferential cash dividends from the Effective Date, accruing at the rate per

share per annum that is determined in accordance with the Pricing Formula

therefor, payable quarterly in arrears.  Accumulated unpaid dividends will not

bear interest.

     The New Preferred Stock will not be redeemable by Columbia prior to the

Initial New Preferred Redemption Date (the fifth anniversary of the Effective

Date).  At any time and from time to time on or after the Initial New

Preferred Redemption Date, Columbia may redeem the outstanding New Preferred

Stock, in whole or in part.  Upon any such redemption, each holder of New

Preferred Stock will receive, in exchange for each share of New Preferred

Stock so called, cash in an amount equal to the sum of (i) the liquidation

value therefor and (ii) all accrued and unpaid dividends thereon to the date

fixed for redemption.

     The New Preferred Stock is not subject to mandatory redemption by

Columbia and is not convertible into or exchangeable for any other securities.

     The liquidation preference of each share of New Preferred Stock is an

amount equal to the sum of (i) the liquidation value and (ii) all accrued and

unpaid dividends 








                                      X-32
<PAGE>   390
thereon to the date of liquidation, dissolution or winding up.

     The holders of New Preferred Stock shall not have voting rights except as

required by law and except as follows:  (i) if dividends on the New Preferred

Stock are in arrears and unpaid for six quarterly dividends periods, the

holders of the New Preferred Stock (voting separately as a class with holders

of all other series of Preferred Stock ranking on a parity with the New

Preferred Stock upon which like voting rights have been conferred and are

exercisable) will be entitled to vote, on the basis of one vote for each share

of New Preferred Stock, for the election of two directors of Columbia, such

directors to be in addition to the number of directors constituting the board

of directors immediately prior to the accrual of such right and (ii) the

holders of New Preferred Stock will have voting rights with respect to certain

alterations of Columbia's Certificate of Incorporation.

     Application will be made to list the New Preferred Stock on the NYSE.

          6.   APPLICABILITY OF FEDERAL AND OTHER SECURITIES LAWS

     Certain holders of Claims will receive securities under the Columbia

Plan.  Section 1145 of the Bankruptcy Code creates certain exemptions from the

registration and licensing requirements of federal and state securities laws 









                                      X-33
<PAGE>   391
with respect to the distribution of securities pursuant to a plan of

reorganization.

               a.   ISSUANCE OF SECURITIES UNDER THE PLAN

     Section 1145 of the Bankruptcy Code exempts the issuance of securities

under a plan of reorganization from registration under the Securities Act and

under state securities laws if three principal requirements are satisfied: (i)

the securities must be issued "under a plan" of reorganization by the debtor

or its successor or under a plan of an affiliate participating in a joint plan

of reorganization with the debtor; (ii) the recipients of the securities must

hold a claim against the debtor, an interest in the debtor or a claim for an

administrative expense against the debtor; and (iii) the securities must be

issued entirely in exchange for the recipient's claim against or interest in

the debtor, or "principally" in such exchange and "partly" for cash or

property.  Although the issuance of the New Indenture Securities, DECS and New

Preferred Stock under the Columbia Plan satisfies the requirements of section

1145(a)(1) of the Bankruptcy Code and is, therefore, exempt from registration

under federal and state securities laws, under certain circumstances

subsequent transfers of such securities may be subject to registration

requirements under such securities laws.









                                      X-34
<PAGE>   392

               b.   TRANSFERS OF NEW SECURITIES

     The securities to be issued pursuant to the Columbia Plan may be freely

transferred by most recipients thereof, and all resales and subsequent

transactions in the new securities are exempt from registration under federal

and state securities laws, unless the holder is an "underwriter" with respect

to such securities.  Section 1145(b) of the Bankruptcy Code defines four types

of "underwriters":

     (i)  persons who purchase a claim against, an interest in, or a claim for

          administrative expense against the debtor with a view to

          distributing any security received in exchange for such a claim or

          interest;

    (ii)  persons who offer to sell securities offered under a plan for the

          holders of such securities;

   (iii)  persons who offer to buy such securities for the holders of such

          securities, if the offer to buy is (x) with a view to distributing

          such securities or (y) made under a distribution agreement; and

    (iv)  a person who is an "issuer" with respect to the securities, as the

          term "issuer" is defined in section 2(11) of the Securities Act. 

          Under section 2(11) of the Securities Act, an "issuer" includes any

          person directly or indirectly controlling or controlled by the

          issuer, or any 







                                      X-35
<PAGE>   393
          person under direct or indirect common control with the issuer.

     To the extent that persons deemed to be "underwriters" receive securities

pursuant to the Columbia Plan, resales by such persons would not be exempted

by Section 1145 of the Bankruptcy Code from registration under the Securities

Act or other applicable law.  Persons deemed to be underwriters, however, may

be able to sell such securities without registration, subject to the

provisions of Rule 144 or Rule 148 under the Securities Act, both of which

permit the public sale of securities received pursuant to the Columbia Plan by

"underwriters", subject to the availability to the public of current

information regarding the issuer and to volume limitations and certain other

conditions.

     Whether or not any particular person would be deemed to be an

"underwriter" with respect to any security to be issued pursuant to the

Columbia Plan would depend upon various facts and circumstances applicable to

that person.  Accordingly, Columbia expresses no view as to whether any person

would be an "underwriter" with respect to any security to be issued pursuant

to that Plan.

     GIVEN THE COMPLEX, SUBJECTIVE NATURE OF THE QUESTION OF WHETHER A

PARTICULAR PERSON MAY BE AN UNDERWRITER, COLUMBIA MAKES NO REPRESENTATION

CONCERNING THE RIGHT OF ANY PERSON TO TRADE IN THE NEW INDENTURE SECURITIES,

DECS OR NEW PREFERRED STOCK TO BE DISTRIBUTED PURSUANT TO THE COLUMBIA 






                                      X-36
<PAGE>   394
PLAN.  COLUMBIA RECOMMENDS THAT POTENTIAL RECIPIENTS OF THE NEW INDENTURE

SECURITIES, DECS OR NEW PREFERRED STOCK CONSULT THEIR OWN COUNSEL CONCERNING

WHETHER THEY MAY FREELY TRADE SUCH SECURITIES.

               c.   CERTAIN TRANSACTIONS BY STOCKBROKERS

     Under section 1145(a)(4) of the Bankruptcy Code, stockbrokers are

required to deliver a copy of this Disclosure Statement (and supplements

hereto, if any, if ordered by the Bankruptcy Court) at or before the time of

delivery of securities issued under the Columbia Plan to their customers for

the first forty days after the Effective Date.  This requirement specifically

applies to trading and other aftermarket transactions in such securities.

          7.   HCA PROVISIONS APPLICABLE TO SECURITIES TO BE ISSUED PURSUANT
               TO THE PLAN

     The HCA prohibits the acquisition by any person of 5% or more of the

voting securities of a registered public utility holding company such as

Columbia unless the acquisition has been approved by the SEC.  It also

requires that any person that owns, controls or holds with power to vote, 10%

or more of the voting securities of a public utility holding company register

with the SEC as a holding company under the HCA.  The DECS and the New

Preferred Stock will not be voting securities for those purposes upon their

issuance.  However, in the event holders of DECS and New Preferred Stock

became entitled to elect directors following a default in the payment of

dividends thereon, those 







                                      X-37
<PAGE>   395
securities would become voting securities and would be included in any

calculation pursuant to the above-described provisions of the HCA.  Further,

the Common Stock issuable upon redemption or conversion of the DECS is a

voting security for purposes of the HCA and SEC approval and/or registration

is required in connection with the acquisition or holding thereof to the

extent described above.

          8.   FUTURE STOCK ISSUANCES

     In addition to the DECS and New Preferred Stock to be issued pursuant to

the Columbia Plan, the Other Securities issued in the Take-Out Offering to

provide funds to repurchase some or all the DECS and New Preferred Stock and

the equity securities that might be issued pursuant to the Columbia Plan or

the TCO Plan, Columbia will be authorized to issue additional shares of

capital stock from time to time following the Effective Date.  There will be

no specific restrictions on such issuances, subject to the availability of

authorized and unissued shares of Common Stock or Preferred Stock, as

applicable, therefor.  Under Delaware law, in the absence of fraud in the

transaction, the judgment of the directors as to the value of consideration

received upon the issuance of a corporation's capital stock is conclusive.  In

addition, as permitted by Delaware law, under Columbia's Certificate of

Incorporation existing Columbia stockholders will not have preemptive rights

to purchase additional shares of Columbia capital 







                                      X-38
<PAGE>   396
stock upon any issuance of such shares authorized by Columbia's Board of

Directors.

     F.   OTHER POST-REORGANIZATION DEBT

     In addition to the New Indenture Securities described above under the

caption "Securities to be Issued Pursuant to the Plan--New Indenture

Securities", the principal indebtedness of Columbia anticipated to be

outstanding following the Effective Date is described below.

          1.   TERM CREDIT FACILITY

     Columbia is currently seeking to arrange a senior unsecured term credit

facility in an aggregate principal amount of $450 million (the "Term

Facility"), effective as of the Effective Date.  Amounts available to be

borrowed under the Term Facility would be applied to make payments in respect

of Claims of Columbia Creditors and obligations of TCO and for general

corporate purposes.  Amounts borrowed under the Term Facility will rank pari

passu with all other senior unsecured obligations of Columbia, including the

New Indenture Securities.

     The specific terms of the Term Facility, including, without limitation,

interest rates, repayment terms, conditions to borrowings, representations and

warranties, covenants and events of default will be negotiated by Columbia and

prospective providers of the Term Facility.

     No assurances can be given that the Term Facility will be arranged or as

to the amount thereof.  The failure of 







                                      X-39
<PAGE>   397
Columbia to arrange the Term Facility or a reduction in the principal amount

thereof would result in a reduction in the amount of cash available to satisfy

Claims of Columbia Creditors and a corresponding increase in the amount of New

Indenture Securities distributed to such Creditors pursuant to the Columbia

Plan.  Although entry into the Term Facility is a condition to the

effectiveness of the Columbia Plan, such condition may be waived by Columbia.

          2.   REVOLVING CREDIT FACILITY

     Columbia is currently seeking to arrange a senior unsecured revolving

credit facility in an aggregate principal amount of up to $700 million (the

"Revolving Facility"), effective as of the Effective Date.  It is expected

that the Revolving Facility would be available (i) to provide working capital

for Columbia and its subsidiaries and (ii) for the issuance of commercial and

standby letters of credit to be issued for the account of Columbia in the

ordinary course of its business.  Amounts borrowed under the Revolving

Facility will rank pari passu with all other senior unsecured obligations of

Columbia, including the New Indenture Securities.

     The specific terms of the Revolving Facility, including, without

limitation, interest rates, repayment terms, conditions to borrowings,

representations and warranties, covenants and events of default will be 









                                      X-40
<PAGE>   398
negotiated by Columbia and prospective providers of the Revolving Facility.

     No assurances can be made that the Revolving Facility can be arranged or

as to the principal amount thereof.  The failure of Columbia to arrange the

Revolving Facility or a reduction in the principal amount thereof could have

an adverse impact on Columbia's ability to achieve the financial projections

contained herein under "Reorganized Columbia Gas--Financial Projections;

Recapitalization".  Although entry into the Revolving Facility is a condition

to the effectiveness of the Columbia Plan, such condition may be waived by

Columbia.

          3.   OTHER CREDIT FACILITIES

     In addition to the foregoing credit facilities, from and after the

Effective Date, Columbia may enter into other credit facilities on such terms

as Columbia determines to be appropriate, subject to any applicable

limitations on indebtedness contained in Columbia's other debt instruments

from time to time.








                                      X-41
<PAGE>   399
     G.   MANAGEMENT 

          1.   BOARD OF DIRECTORS

     Columbia's board of directors is divided into three classes of directors. 

During each annual meeting of stockholders, on a rotating basis, members of

one of the classes are elected for a term of three years.  The following is a

table of the persons who are the current directors of Columbia and who will

continue to be the directors on the Effective Date, except as noted below, and

certain biographical information relating to each person identified:

<TABLE>
<CAPTION>
                                                                                       Shares of
              Name & Principal                          Year First      End of        Stock Owned
                 Occupation                    Age        Elected     Curr. Term     Beneficially
              ----------------                 ---      ----------    ----------     ------------
<S>                                            <C>      <C>           <C>            <C>
 Richard F. Albosta(1)                         58       1995           1995              0
        Consultant since October, 1994. 
        Chairman, President and CEO of
        Ensearch Environmental Corporation
        (January 1994 to October, 1994;
        President and CEO since 1986 and
        Chairman since 1990 of Ebasco
        Services, Inc.
 
Robert H. Beeby                                63       1993           1996            1,000
        Chairman of the Board of Service
        America Corporation since 1992. 
        Former President and CEO of Frito-
        Lay, Inc. (1989 to 1991) and
        Pepsi-Cola International (1984 to
        1988).  Director of Church &
        Dwight Co., Inc. and Applied
        Extrusion Technologies, Inc.

 Wilson K. Cadman                               67      1993           1997              0
        Private Investor since 1992. 
        Former Chairman, President and
        CEO, Kansas Gas & Electric Co. and
        retired Vice Chairman of Western
        Resources, Inc.  Director of El
        Paso Electric Co., Inc. and
        Clark/Bardes Companies.
</TABLE>
- ---------------------------
(1)    These directors were elected to the board at the February,
       1995 meeting of the board of directors and were designated
       to the class of directors whose terms expire in 1995 in
       anticipation of the vacancies created when the terms of
       Messrs. John D. Daly, Thomas S. Blair and Robert H.
       Hillenmeyer expire on April 28, 1995.  Messrs. Hillenmeyer
       and Blair each reached the mandatory retirement age in 1994
       and Mr. Daly has decided to not stand for re-election
       following his retirement as an officer of Columbia.

                                     X-42
<PAGE>   400
<TABLE>
<CAPTION>
                                                                                       Shares of
              Name & Principal                          Year First      End of        Stock Owned
                 Occupation                    Age        Elected     Curr. Term     Beneficially
              ----------------                 ---      ----------    ----------     ------------
<S>                                            <C>       <C>            <C>            <C>
 John H. Croom(2)                               62       1981           1997           34,773
        Chairman of the Board, President
        and CEO of Columbia since August
        1984.

 James P. Heffernan                             49       1993           1997             0
        Managing Director and President of
        Whitman Heffernan Rhein & Co.,
        Inc., since 1987.  CEO and
        Director of Danielson Holding
        Corporation, since 1990 and
        Director of its subsidiary,
        Danielson Trust Company, since
        1993.  Director and President of
        Herman's Holdings, Inc. and
        Director of its subsidiary,
        Herman's Sporting Goods, Inc.
        since 1993.

 Malcolm T. Hopkins(1)                          66       1982           1996            5,512
        Private investor since 1984. 
        Retired Vice Chairman, CFO and
        Director of the former St. Regis
        Corporation.  Director of
        Metropolitan Series Fund, Inc. and
        MetLife Portfolios, Inc.; MAPCO,
        Inc.; KinderCare Learning Centers,
        Inc., EMCOR, Inc.; and U.S. Home
        Corporation. Trustee of The
        Biltmore Funds.

 Malcolm Jozoff                                 55       1995           1995            1,000
        Chairman and CEO of Lenox,
        Incorporated, since 1993.  Self
        employed Management Consultant on
        marketing and strategic planning;
        (July 1992 to October 1993); 
        previously Group Vice President,
        The Procter & Gamble Co. and
        President - Health Care Products,
        Procter & Gamble, USA. Director of
        Chemtrak, Inc.

 William E. Lavery                              64       1985           1996              750
        President Emeritus and Professor,
        Virginia Polytechnic Institute and
        State University; President from
        1975 to 1987.  Director of First
        Union Corporation of Virginia and
        Shenandoah Life Insurance Co.

 George P. MacNichol, III(3)                    71       1971           1995              600
        Private Investor since 1979. 
        Retired Officer and Director of
        Libbey-Owens-Ford Company and
        retired Director of Fifth Third
        Bank of Toledo, N.A.

 George E. Mayo                                 62       1994           1995              500
        Chairman of the Board and
        President of the Midland Life
        Insurance Company since 1980. 
        President Midland Financial
        Services since Dec. 29, 1994. 
        Chairman of the Board of U.S.
        Health Corporation.  Director of
        Compuserve, Inc.; HBO & Co. of
        Atlanta; Huntington Bancshares
        Inc.; and Borror Corporation.
</TABLE>

- -----------------------
(2)   Will retire on May 1, 1995.

(3)   It is expected that Mr. MacNichol will retire from the Board
      after he reaches the mandatory retirement age for directors
      of Columbia in August, 1995.

                                     X-43
<PAGE>   401
<TABLE>
<CAPTION>
                                                                                       Shares of
              Name & Principal                          Year First      End of        Stock Owned
                 Occupation                    Age        Elected     Curr. Term     Beneficially
              ----------------                 ---      ----------    ----------     ------------
<S>                                            <C>       <C>            <C>            <C>
 Douglas E. Oleson(1)                           56       1995           1995              0
        President and CEO of Battelle
        Memorial Institute, since 1987.

 Ernesta G. Procope                             65       1979           1997            1,161
        President and CEO of E.G. Bowman
        Co., Inc., since 1953.  Director
        of Avon Products, Inc. and Chubb
        Corporation.

 James R. Thomas, II                            69       1990           1997              300
        Private investor, since 1983. 
        Retired President and CEO of
        Carbon Industries, Inc.  Director
        of One Valley Bank, N.A., Camcare,
        Inc., and Shoney's, Inc.

 William R. Wilson                              67       1987           1996            5,000
        Private investor, since 1992. 
        Retired Chairman of the Board and
        CEO of Lukens Inc.  Director of
        Acme Metals Incorporated,
        Provident Mutual Life Insurance
        Company, and L.F. Driscoll Co.

 Oliver G. Richard, III(4)                      42       1995           1996         10,000(5)
        Chairman, Chief Executive Officer
        and President of Columbia
        (effective April 28, 1995). 
        Chairman of New Jersey Resources
        Corporation since 1992; former
        President and CEO since 1991. 
        Former President and CEO of New
        Jersey Natural Gas Company;
        President and CEO of Northern
        Natural Gas Company (1989 to
        1991).  Senior Vice President and
        subsequently Executive Vice
        President of Exxon Gas Pipeline
        Group; Vice President and General
        Counsel of Tenngasco, a subsidiary
        of Tenneco Corporation (1985 to
        1987); and FERC Commissioner (1982
        to 1985).  Director of National
        Westminster Bank USA, Monmouth
        College and Monmouth Medical
        Center.
</TABLE>

     For the year 1994, directors received a retainer of $25,000 and a meeting

fee of $1,000 per meeting.  Those directors on the audit, compensation, finance,

corporate governance and ad hoc committees of the board received a meeting fee

of $1,000 per committee meeting.  Directors serving on the executive committee

of the board also received a $6,000 retainer and a meeting fee of $800 per




- -------------------------
(4)   Mr. Richard is to replace Mr. Croom as Chairman, Chief
      Executive Officer and President of Columbia on April 28,
      1995.

(5)   As of May 1, 1995.

                                      X-44
<PAGE>   402
meeting.  The board held eleven meetings in 1994 and each incumbent director

attended at least 75% of the total number of meetings of the board and board

committees on which he or she served.  No officer received any compensation

for services as a director while also serving as an officer of Columbia.

     Columbia offers medical coverage to non-employee directors and pays the

premium associated with their participation.  Columbia also reimburses its

non-employee directors for the cost of Medicare Part B, if applicable.  Non-

employee directors may elect to defer compensation for distribution at a later

date.  Deferred amounts of compensation accrue interest at the rate for six-

month U.S. Treasury Bills and may be paid in a lump sum or in annual

installments over ten years. 

     Each non-employee director who has served on the board for a minimum of

five years and who retires after attaining the age of 70 or becomes disabled,

will receive annual retirement payments equal to the amount of the annual

retainer for board service at the time of retirement.  These payments will

cease at the death of the director unless the director elected an actuarial

equivalent option.  In the event of certain specified changes in the control

of Columbia, a director (regardless of years of service on the board) may

elect a lump-sum payment equal to the present value of the retainer at the

time of the election multiplied






                                      X-45
<PAGE>   403
by the number of years of such director's service on the board, with a minimum

of ten years.

     2.   OFFICERS OF COLUMBIA

          a.   OVERVIEW OF COLUMBIA'S SENIOR MANAGEMENT

     The following is a table indicating the persons who currently are and

expected to serve as executive officers of Columbia, as of the Effective Date,

their principal capacities, 1994, 1995 and 1996 base salaries(6), the 1993 bonus

payable in 1994, the 1994 bonus payable in 1995, other compensation for 1994(7),

and stock options to be granted thirty days after the Effective Date.

<TABLE>
<CAPTION>
                                                                                        1993       1994
                                                      BASE       BASE        BASE       BONUS      BONUS
                                                      SALARY     SALARY      SALARY     PAID       PAID      OTHER
                                                      FOR 1994   FOR 1995    FOR 1996   IN 1994    IN 1995   COMP. 1994    STOCK
 NAME                    TITLE                           $          $           $          $          $          $         OPTIONS
 ----                    -----                        --------   --------    --------   -------    -------   ----------    -------
<S>                      <C>                          <C>        <C>         <C>        <C>        <C>       <C>           <C>
 John H. Croom           Chairman of the Board,       682,000    728,000     740,400    50,000     400,000   40,720        10,000(8)
                         President and CEO (will
                         retire on April 28, 1995)
                     
                     
 Oliver  G. Richard,     Chairman of the Board,       N/A        750,000     750,000    N/A        N/A       N/A           N/A
 III                     President and CEO
                         (effective April 28,
                         1995)
                     
 Daniel L. Bell, Jr.     Senior Vice President,       299,200    308,150     310,400     29,260    42,196    17,908         5,000
                         Chief Legal Officer and
                         Secretary
</TABLE>             


- ---------------------------------
(6)   Columbia calculates its management's base salaries on a
      fiscal calendar year which begins on April 1st of each year. 
      The salaries listed for the years 1994 and 1995 have been
      adjusted to conform to a calendar year basis.  The base
      salaries for the calendar year 1996 reflect the salaries
      effective as of April 1, 1995.  At this time, it is too
      early to estimate what the projected base salaries will be
      for the fiscal year beginning April 1, 1996 for members of
      Columbia's management.

(7)   Other compensation reflects Columbia's contributions to the
      Employees' Thrift Plan which is a qualified plan and the
      Thrift Restoration Plan which is an unqualified plan.

(8)   To be granted 30 days after the Plan is filed.

                                     X-46
<PAGE>   404
<TABLE>
<CAPTION>
                                                                                          1993       1994
                                                        BASE       BASE        BASE       BONUS      BONUS
                                                        SALARY     SALARY      SALARY     PAID       PAID      OTHER
 NAME                      TITLE                        FOR 1994   FOR 1994    FOR 1996   IN 1994    IN 1995   COMP. 1994    STOCK
                                                           $          $           $          $          $           $        OPTIONS
 ----                      -----                        --------   --------    --------   -------    -------   ----------    -------
<S>                        <C>                          <C>        <C>         <C>        <C>        <C>       <C>           <C>
 Michael W. O'Donnell      Senior Vice President and     286,025    310,150    315,300     26,000     53,046    92,031*       5,000
                           Chief Financial Officer

 Richard A. Casali         Vice President                137,861    141,438    142,120      5,000      6,969     62,464*      -0-

 Richard E. Lowe           Vice President and            169,700    178,850    181,000      8,080     20,688    107,868*      2,000
                           Controller

 Lawrence J. Bainter       Treasurer                     167,250    176,275    178,400      7,965     20,388    107,655*      2,000

 Tejinder S. Bindra        Assistant Secretary           143,997    150,294    151,682     10,320     23,381    115,674*      -0-

 Joyce K. Hayes            Assistant Secretary           128,753    134,202    135,441      9,267     20,877    106,584*      -0-
</TABLE>


- -------------------------

   * Includes payment under Retention Agreement (defined and described in 
     Section V.F.11)



     Prior to the Petition Date, Columbia's board of directors established

various incentive compensation programs for Columbia's executives.  These

programs include an annual incentive compensation plan, the Incentive Plan

(defined and described in Section V.F.15), a performance share program,

benefits plans and miscellaneous arrangements.  In 1991, due to the reduction

in the dividend on Common Stock and Columbia's filing for bankruptcy,

Columbia's incentive compensation programs were suspended.  This suspension

has been continued to date for the performance share program.

     The annual incentive compensation plan was adopted in 1987 and provides

key employees with the opportunity to receive cash awards for attaining

specific goals which contribute directly to the present and future financial

health of Columbia.  The amounts of these annual awards are determined be the

compensation committee of the board of directors.  The amount for the awards 








                                      X-47
<PAGE>   405
based on performance in 1994 were determined and awarded in March 1995. 

     The Incentive Plan, as described in Section V.F.15, provides additional

incentives to officers and other key employees through the granting of

incentive stock options, nonqualified stock options, stock appreciation rights

and/or contingent stock awards.  As previously stated, the Incentive Plan has

been resumed during 1995 and will terminate by its terms on September 1995. 

     The performance share program was adopted in 1990 and provides for the

payment of contingent stock awards to senior executives if specific pre-

determined financial targets are attained in future years.  This program is

still currently suspended.  

     Columbia also maintains thrift, retirement, medical, dental, long-term

disability, life insurance and other benefit plans of general applicability. 

Federal regulations establish limits on the benefits which may be paid under

thrift and retirement plans qualified under the Internal Revenue Code.  To

maintain compliance, Columbia caps benefits under the qualified plans at the

required levels.  To provide comparable benefits to more highly compensated

employees, Columbia has established a thrift restoration plan and pension

restoration plan, both of which are nonqualified and unfunded.  However, the

pension restoration plan may be funded through a trust arrangement at the

election of the 







                                      X-48
<PAGE>   406
beneficiary once a threshold liability of $100,000 has been reached. 

     A noncontributory defined benefit pension plan is maintained for all

employees of Columbia's participating subsidiaries who are least 21 years of

age.  The annual benefit (payable monthly) under the pension plan is based on

the average annual compensation and years of credited service.  Final average

compensation is calculated using base compensation paid to the employee for

the highest 36 months of the last 60 months prior to retirement. 

     Under certain circumstances, Columbia can enter into agreements seeking

to retain the services of its management during periods of financial

uncertainty.  Employment agreements, effective July 19, 1991 and which expired

on July 18, 1993, were entered into with Messrs. Croom and Bell.  New

employment agreements with Messrs. Croom and Bell were entered into effective

July 19, 1993 which the Bankruptcy Court approved on October 20, 1993.  The

employment agreements entered into in 1993 by Messrs. Croom and Bell each

provide retention payments equal to one year's base salary if the individual

remains employed as of the Confirmation Date.  

     The employment agreements also provide that the employee may treat his

employment terminated without cause if certain if one of the following occurs:

(i) a reduction in the employee's fixed salary or other benefits to which such

employee is entitled (other than a reduction affecting all employees

generally); (ii) 






                                      X-49
<PAGE>   407
a liquidation, dissolution, consolidation or merger, or transfer of all or

substantially all of Columbia's assets (other than a transaction in which the

successor corporation has a net worth equal to or greater than Columbia's and

assumes the agreement and all of its obligations and undertakings); (iii) a

change in the control of Columbia (as defined in the agreement) or a material

reduction in the employee's rank or responsibilities.  In the event of such an

election by an employee to treat the agreement as terminated or in the event

of a termination by Columbia not permitted by the agreement, the employee is

entitled to receive, in lieu of the retention payments, a lump-sum termination

payment equal to the present value of all amounts otherwise payable under the

agreement (except certain fringe benefits), discounted at the interest rate

specified in the agreement.

          b.   CHANGES IN SENIOR MANAGEMENT OF COLUMBIA

     At the 1993 shareholders' meeting, John H. Croom, Columbia's current

Chairman of the Board, Chief Executive Officer and President announced that he

would be retiring when Columbia's Chapter 11 bankruptcy proceedings were

further advanced to allow new management to lead Reorganized Columbia. 

Following the 1993 shareholder's meeting, the board of directors established a

committee of Columbia's outside directors to conduct a search for a highly

qualified replacement for Mr. Croom.  As a result of its extensive search, the

executive search committee, at the board's March 15, 1995 meeting, announced

its recommendation that the board elect Oliver G. Richard, III as the Chairman

of the Board, 








                                      X-50
<PAGE>   408
Chief Executive Officer and President of Columbia.  The board accepted the

recommendation and elected Mr. Richard to these positions effective as of the

close of business on April 28, 1995.  

     Mr. Richard, 42, has a very distinguished record.  In 1992, he was

elected Chairman of the New Jersey Resources Corporation where he had served

as President and Chief Executive Officer since 1991.  He also served as

President and Chief Executive Officer of New Jersey Natural Gas Company, New

Jersey Resources Corporation's principal operating company.  Mr. Richard was

also previously with Enron Corporation where he was President and Chief

Executive Officer of Northern Natural Gas Company from 1989 to 1991 and, from

1987 to 1989, Senior Vice President and then Executive Vice President of Enron

Gas Pipeline Group.  Prior to such time, from 1985 to 1987, he served as Vice

President and General Counsel of Tenngasco, a subsidiary of Tenneco

Corporation, and, from 1982 to 1985, as a Commissioner of FERC.  

     Columbia has entered into an employment agreement with Mr. Richard

pursuant to which he is to receive a base salary of $750,000 per year, subject

to increases by the board.  At present, Mr. Richard does not own any shares of

Columbia Common Stock, however, the agreement provides for a grant of 10,000

shares of Common Stock when he begins his employment and a grant of 5,000

shares per year on December 31 of the years 1995, 1996, and 1997, on the

condition that he is employed by Columbia as of those dates.  In addition,

subject to necessary approvals, on the 






                                      X-51
<PAGE>   409
thirtieth day after the Effective Date, Mr. Richard will receive a grant of

options to purchase, at the then prevailing market price, 80,000 shares of

Columbia Common Stock.  If such options cannot be issued as of such date, but

are issued later, Mr. Richard is to receive a cash payment equal to the

excess, if any, of the exercise price over the fair market value of the shares

of Common Stock on the thirtieth day following the Effective Date. 

     The employment agreement also provides that Columbia will compensate Mr.

Richard for certain items he will forfeit as a result of his termination of

his employment with New Jersey Resources Corporation.  Such compensation is

not expected to exceed $80,000.  In addition to being eligible to participate

in all of Columbia's incentive compensation plans and employee benefit

programs provided to other senior executives of Columbia, Mr. Richard may

receive upon retirement, supplemental pension payments to make up the

difference, if any, between Columbia's pension benefits and those he would

have received from New Jersey Resources Corporation.

     The employment agreement further provides for Mr. Richard to be paid

severance benefits if his employment is terminated without cause.  Such

severance benefits include payment of Mr. Richard's base salary, incentive

compensation and fringe benefits for the remainder of the first year in

addition to the 24-month salary, incentive compensation and fringe benefits. 

If Mr. Richard's employment is terminated due to a change in control of

Columbia (as defined in the agreement), the period of his 








                                      X-52
<PAGE>   410
severance benefits is increased to thirty-six months, but the amount paid to

Mr. Richard, which would constitute "parachute payments" under the Internal

Revenue Code, will be limited to the extent necessary to avoid the imposition

of an excise tax.  










                                      X-53
<PAGE>   411
     H.   AMENDMENT TO CERTIFICATE OF INCORPORATION

     Pursuant to the Columbia Plan, the Certificate of Incorporation of

Columbia would be amended and restated (the "Restated Certificate of

Incorporation"), pursuant to Section 303 of the Delaware General Corporation

Law and Section 1123(a) of the Bankruptcy Code.  The Restated Certificate of

Incorporation will become effective upon filing with the Delaware Secretary of

State on or after the Effective Date.  Columbia will remain incorporated under

the laws of the State of Delaware.  A form of the Restated Certificate of

Incorporation is attached as Exhibit A to the Columbia Plan, which is attached

as Exhibit 1 to this Disclosure Statement.  The Restated Certificate of

Incorporation represents a streamlining and modernization of Columbia's

current Certificate of Incorporation, with the additional changes outlined

below.  The following discussion is qualified in its entirety by reference to

the Restated Certificate of Incorporation.

     The Restated Certificate of Incorporation prohibits the issuance of Anon-

voting equity securities as required by Section 1123(a)(6) of the Bankruptcy

Code, subject to further amendment of the Restated Certificate of

Incorporation as permitted by applicable law.

     The Restated Certificate of Incorporation also increases the number of

authorized shares of Preferred Stock to 20 million shares.  It is anticipated

that up to 16 million shares of Preferred Stock having the terms described

under the caption 









                                      X-54
<PAGE>   412
"Reorganized Columbia -- Securities to be Issued pursuant to the Plan" herein

will be issued on the Effective Date in order to effectuate the Columbia Plan. 

Also, shares of Preferred Stock having other terms might be issued if holders

of Class 3.2 Claims elect the Cash-Out Election and the Take-Out Offering is

consummated.

     In addition, if the Rights Plan is approved and implemented, 51,000

shares will be reserved for issuance in connection with that Plan.  The

remaining shares of authorized but unissued Preferred Stock may be issued from

time to time pursuant to resolution adopted by the Columbia board of

directors, subject to approval of the SEC under the HCA.

     The Restated Certificate of Incorporation permits a super-majority of the

board of directors to remove one or more directors for "cause".  Under the

current Certificate of Incorporation only the Stockholders may remove a

director or directors for "cause".  This revision is designed to permit the

board of directors to act in an expedient manner to dismiss a director who has

engaged in malfeasance and who refuses to resign from the board.  Columbia is

not aware of any situation that would currently require the use of this

provision.

     The following additional amendments to the current Certificate of

Incorporation, proposed for approval by Stockholders at the Annual Meeting

scheduled for April 28, 1995 and subject to approval of the Bankruptcy Court

and the SEC, will be included in the Restated Certificate of Incorporation,

even if 







                                      X-55
<PAGE>   413
those amendments are not implemented prior to the Effective Date.  The

proposed amendments to ARTICLE FOURTH would delete the restrictions on

dividends and amounts of secured debt applicable while any Preferred Stock is

outstanding.  They would also remove from the Certificate of Incorporation

specific provisions regarding Preferred Stock voting rights, dividend rights

and liquidation rights and permit the board of directors to determine the

specific rights, powers and preferences of each series of Preferred Stock, and

the limitations thereon, at the time of its issuance.  The par value of the

Preferred Stock would also be reduced from fifty dollars ($50) to ten dollars

($10) per share.  Conforming amendments to ARTICLE EIGHTH (i) provide for

continuation of a staggered board for directors elected by holders of Common

Stock even if directors are elected by the holders of Preferred Stock and

(ii) recognize that the terms of the Preferred Stock may be set by resolutions

adopted by the board of directors pursuant to ARTICLE FOURTH as proposed to be

amended.

     Stockholders who vote to approve the Columbia Plan will, by such vote,

and without further action, also vote to approve the amendments to the

Certificate of Incorporation described above.










                                      X-56
<PAGE>   414

X.   CONCLUSION

     For all of the reasons contained in this Disclosure Statement, the Debtor

believes that confirmation and consummation of the Columbia Plan is preferable

to any other  reasonable alternative.  Consequently, Columbia urges all of

holders of Claims entitled to vote and all Stockholders to accept the Columbia

Plan by duly completing and returning their ballots in accordance with the

procedures approved by the Bankruptcy Court.

Dated:    Wilmington, Delaware
          April 17, 1995



                                THE COLUMBIA GAS SYSTEM, INC.



                                By: /s/ JOHN H. CROOM
                                   ----------------------------
                                   John H. Croom
                                   Chairman and Chief Executive 
                                   Officer

 






                                      XI-1
<PAGE>   415
                 UNITED STATES BANKRUPTCY COURT
                  FOR THE DISTRICT OF DELAWARE

 ----------------------------------x
 In re:                            :  Chapter 11
                                   :
                                   :  Case No. 91-804 (HSB)
                                   :
 COLUMBIA GAS TRANSMISSION         :
 CORPORATION,                      :
                                   :
                                   :
                    Debtor.        :
 ----------------------------------x

                AMENDED PLAN OF REORGANIZATION OF
              COLUMBIA GAS TRANSMISSION CORPORATION

                              Respectfully Submitted,

                              STROOCK & STROOCK & LAVAN
                              Lewis Kruger
                              Robin E. Keller
                              Seven Hanover Square
                              New York, New York  10004-2696
                              (212) 806-5400

                              CRAVATH, SWAINE & MOORE
                              John F. Hunt
                              John E. Beerbower
                              825 Eighth Avenue
                              New York, New York  10019-7475
                              (212) 474-1000

                              YOUNG, CONAWAY, STARGATT & TAYLOR
                              James L. Patton, Jr.
                              11th Floor - Rodney Square North
                              P.O. Box 391
                              Wilmington, Delaware  19899-0391
                              (302) 571-6600

                              Co-Counsel for Debtors.

 Dated:  April 17, 1995


<PAGE>   416
<TABLE>
<CAPTION>

                                                             Page
                                                             ----
<S>                                                            <C>
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . .   1

I.  DEFINED TERMS, RULES OF INTERPRETATION,
    COMPUTATION OF TIME AND GOVERNING LAW. . . . . . . . . .   2
    A.  Defined Terms. . . . . . . . . . . . . . . . . . . .   2
        1.    "Accepting Producer" . . . . . . . . . . . . .   2
        2.    "Accepting Producer Percentage". . . . . . . .   2
        3.    "Accepting 3.2 Claimant" . . . . . . . . . . .   2
        4.    "Actual Target Producer Distribution". . . . .   2
        5.    "Additional Distribution". . . . . . . . . . .   3
        6.    "Administrative Claim" . . . . . . . . . . . .   3
        7.    "Administrative Fee Order" . . . . . . . . . .   3
        8.    "Administrative Recoupment Claim". . . . . . .   3
        9.    "Affiliate Tax Claim". . . . . . . . . . . . .   3
        10.   "Allowance Amount" . . . . . . . . . . . . . .   3
        11.   "Allowed". . . . . . . . . . . . . . . . . . .   3
        12.   "Assumed Executory Contract Claim" . . . . . .   4
        13.   "Avoidance Claim". . . . . . . . . . . . . . .   4
        14.   "Bankruptcy Code". . . . . . . . . . . . . . .   5
        15.   "Bankruptcy Court" . . . . . . . . . . . . . .   5
        16.   "Bankruptcy Rules" . . . . . . . . . . . . . .   5
        17.   "Bar Date" . . . . . . . . . . . . . . . . . .   5
        18.   "Bar Date Order" . . . . . . . . . . . . . . .   5
        19.   "BG&E Case". . . . . . . . . . . . . . . . . .   5
        20.   "BG&E Claim" . . . . . . . . . . . . . . . . .   6
        21.   "Business Day" . . . . . . . . . . . . . . . .   6
        22.   "Calendar Quarter" . . . . . . . . . . . . . .   6
        23.   "Cash Collateral Orders" . . . . . . . . . . .   6
        24.   "Claim". . . . . . . . . . . . . . . . . . . .   6
        25.   "Claimholder". . . . . . . . . . . . . . . . .   7
        26.   "Claims Estimation Procedures" . . . . . . . .   7
        27.   "Class". . . . . . . . . . . . . . . . . . . .   7
        28.   "CNR". . . . . . . . . . . . . . . . . . . . .   7
        29.   "Columbia" . . . . . . . . . . . . . . . . . .   7
        30.   "Columbia Customer Guaranty" . . . . . . . . .   7
        31.   "Columbia Guaranty". . . . . . . . . . . . . .   8
        32.   "Columbia Omnibus Settlement". . . . . . . . .   8
        33.   "Columbia Secured Claim" . . . . . . . . . . .   9
        34.   "Columbia Transmission Investment 
               Corporation". . . . . . . . . . . . . . . . .  10
        35.   "Columbia Unsecured Claim" . . . . . . . . . .  10
        36.   "Confirmation" . . . . . . . . . . . . . . . .  10
        37.   "Confirmation Date". . . . . . . . . . . . . .  10
        38.   "Confirmation Order" . . . . . . . . . . . . .  10
        39.   "Creditor" . . . . . . . . . . . . . . . . . .  10
</TABLE>

<PAGE>   417
<TABLE>
<CAPTION>
                                                             Page
                                                             ----
        <S>                                                   <C>
        40.   "Creditors' Committee" . . . . . . . . . . . .  11
        41.   "Customer" . . . . . . . . . . . . . . . . . .  11
        42.   "Customers' Committee" . . . . . . . . . . . .  11
        43.   "Customer Regulatory Claim". . . . . . . . . .  11
        44.   "Customer Settlement Proposal" . . . . . . . .  11
        45.   "Deficiency Claim" . . . . . . . . . . . . . .  11
        46.   "DIP Facility" . . . . . . . . . . . . . . . .  12
        47.   "Disclosure Statement" . . . . . . . . . . . .  12
        48.   "Disputed" . . . . . . . . . . . . . . . . . .  12
        49.   "Dissenting 3.2 Claimant". . . . . . . . . . .  12
        50.   "Distribution Date". . . . . . . . . . . . . .  12
        51.   "East Lynn Condemnation Award" . . . . . . . .  12
        52.   "East Lynn Condemnation Obligation". . . . . .  13
        53.   "East Lynn Property" . . . . . . . . . . . . .  13
        54.   "Effective Date" . . . . . . . . . . . . . . .  13
        55.   "Environmental Claims" . . . . . . . . . . . .  13
        56.   "EPA Order". . . . . . . . . . . . . . . . . .  13
        57.   "Estate" . . . . . . . . . . . . . . . . . . .  13
        58.   "Excess Amount". . . . . . . . . . . . . . . .  13
        59.   "Fee Examiner" . . . . . . . . . . . . . . . .  14
        60.   "FERC" . . . . . . . . . . . . . . . . . . . .  14
        61.   "FERC Gas Tariff". . . . . . . . . . . . . . .  14
        62.   "FERC Interest". . . . . . . . . . . . . . . .  14
        63.   "FERC Interest Order". . . . . . . . . . . . .  14
        64.   "File" . . . . . . . . . . . . . . . . . . . .  14
        65.   "Final Allowance Date" . . . . . . . . . . . .  15
        66.   "Final Distribution Percentage". . . . . . . .  15
        67.   "Final Order". . . . . . . . . . . . . . . . .  15
        68.   "Final FERC Order" . . . . . . . . . . . . . .  15
        69.   "First Mortgage Bonds" . . . . . . . . . . . .  16
        70.   "General Unsecured Claim". . . . . . . . . . .  16
        71.   "GRI". . . . . . . . . . . . . . . . . . . . .  16
        72.   "GRI Claim". . . . . . . . . . . . . . . . . .  16
        73.   "Holdback Amount". . . . . . . . . . . . . . .  16
        74.   "Initial Accepting Producer" . . . . . . . . .  17
        75.   "Initial Accepting Producer Settlement". . . .  17
        76.   "Initial Accepting Producer Settlement
               Agreement". . . . . . . . . . . . . . . . . .  17
        77.   "Initial Distribution Percentage". . . . . . .  17
        78.   "Intercompany Claims". . . . . . . . . . . . .  17
        79.   "Intercompany Claims Litigation" . . . . . . .  17
        80.   "Interests". . . . . . . . . . . . . . . . . .  18
        81.   "Inventory Financing Agreement". . . . . . . .  18
        82.   "Inventory Loan Agreements". . . . . . . . . .  18
        83.   "Investment Guidelines". . . . . . . . . . . .  18
</TABLE>

                                      -ii-
<PAGE>   418
<TABLE>
<CAPTION>
                                                             Page
                                                             ----
        <S>                                                   <C>
        84.   "IRS". . . . . . . . . . . . . . . . . . . . .  18
        85.   "IRS Order". . . . . . . . . . . . . . . . . .  18
        86.   "IRS Settlement Agreement" . . . . . . . . . .  18
        87.   "Kentucky Environmental Orders". . . . . . . .  18
        88.   "Lowest Intermediate Balance Amount" . . . . .  18
        89.   "Miscellaneous Administrative Claim" . . . . .  19
        90.   "1990 Rate Case" . . . . . . . . . . . . . . .  19
        91.   "1990 Rate Case Claim" . . . . . . . . . . . .  19
        92.   "1990 Rate Case Settlement". . . . . . . . . .  19
        93.   "NGA". . . . . . . . . . . . . . . . . . . . .  19
        94.   "Omnibus FERC Motion". . . . . . . . . . . . .  19
        95.   "Omnibus FERC Motion Claim". . . . . . . . . .  20
        96.   "Original Settlement Values" . . . . . . . . .  20
        97.   "PBGC" . . . . . . . . . . . . . . . . . . . .  20
        98.   "Pennsylvania Environmental Order" . . . . . .  20
        99.   "Petition Date". . . . . . . . . . . . . . . .  20
        100.  "Plan" . . . . . . . . . . . . . . . . . . . .  20
        101.  "Plan Mailing Date". . . . . . . . . . . . . .  20
        102.  "Post-Petition Operational Claim". . . . . . .  20
        103.  "Priority Tax Claim" . . . . . . . . . . . . .  20
        104.  "Producer" . . . . . . . . . . . . . . . . . .  20
        105.  "Producer Claim" . . . . . . . . . . . . . . .  21
        106.  "Producer Settlement Agreement". . . . . . . .  21
        107.  "Professional" . . . . . . . . . . . . . . . .  21
        108.  "Professional Claim" . . . . . . . . . . . . .  21
        109.  "Projected Target Producer Distribution" . . .  21
        110.  "Recoupment Claim" . . . . . . . . . . . . . .  21
        111.  "Refund Claim" . . . . . . . . . . . . . . . .  22
        112.  "Refund Dispute" . . . . . . . . . . . . . . .  23
        113.  "Refund Obligation". . . . . . . . . . . . . .  23
        114.  "Rejecting Producer" . . . . . . . . . . . . .  23
        115.  "Reorganization Case". . . . . . . . . . . . .  24
        116.  "Reorganized TCO". . . . . . . . . . . . . . .  24
        117.  "RIA Account". . . . . . . . . . . . . . . . .  24
        118.  "Schedule of Liabilities". . . . . . . . . . .  24
        119.  "Section 4(e) Claim" . . . . . . . . . . . . .  24
        120.  "Secured Claim". . . . . . . . . . . . . . . .  24
        121.  "Secured Tax Claim". . . . . . . . . . . . . .  24
        122.  "Service Contract" . . . . . . . . . . . . . .  25
        123.  "Settlement Value" . . . . . . . . . . . . . .  25
        124.  "Stipulation of Dismissal with Prejudice". . .  25
        125.  "Subordinated Tax Claims". . . . . . . . . . .  25
        126.  "Supplemental Distribution Percentage" . . . .  25
        127.  "Supplemental Interest Payment". . . . . . . .  25
</TABLE>


                                     -iii-
<PAGE>   419
<TABLE>
<CAPTION>
                                                             Page
                                                             ----
<S>                                                          <C>
        128.  "Target Distribution Percentage" . . . . . . .  26
        129.  "Tax Allocation Agreement" . . . . . . . . . .  26
        130.  "TCO". . . . . . . . . . . . . . . . . . . . .  26
        131.  "TCO Committees" . . . . . . . . . . . . . . .  26
        132.  "TCO Obligation" . . . . . . . . . . . . . . .  26
        133.  "Trust Fund Decision". . . . . . . . . . . . .  26
        134.  "Unclaimed Distribution" . . . . . . . . . . .  27
        135.  "Unsecured Claim". . . . . . . . . . . . . . .  27
        136.  "U.S. Trustee" . . . . . . . . . . . . . . . .  27
        137.  "U.S. Trustee's Fee Claims". . . . . . . . . .  27
        138.  "Voting Deadline". . . . . . . . . . . . . . .  27
        139.  "WACOG". . . . . . . . . . . . . . . . . . . .  27
        140.  "Waiver Agreement" . . . . . . . . . . . . . .  27
    B.  Rules of Interpretation  . . . . . . . . . . . . . .  28
    C.  Computation of Time  . . . . . . . . . . . . . . . .  29
    D.  Governing Law  . . . . . . . . . . . . . . . . . . .  29

II. UNCLASSIFIED CLAIMS AND
    CLASSES OF CLAIMS AND INTERESTS. . . . . . . . . . . . .  29
    A.  General  . . . . . . . . . . . . . . . . . . . . . .  29
    B.  Unclassified Claims  . . . . . . . . . . . . . . . .  30
        1.    Administrative Claims. . . . . . . . . . . . .  30
              a. Professional Claims . . . . . . . . . . . .  31
              b. Post-Petition Operational Claims. . . . . .  31
              c. Assumed Executory Contract Claims . . . . .  31
              d. U.S. Trustee's Fee Claims . . . . . . . . .  31
              e. Miscellaneous Administrative Claims . . . .  32
              f. Administrative Recoupment Claims. . . . . .  32
       2.    Priority Tax Claims . . . . . . . . . . . . . .  33
       3.    East Lynn Condemnation Obligation . . . . . . .  33

    C.   Classes of Claims . . . . . . . . . . . . . . . . .  33
       1.    Class 1 Claims - Secured Claims . . . . . . . .  33

              a. Class 1.1 - DIP Facility Claim. . . . . . .  33
              b. Class 1.2 - Secured Producer Claims . . . .  33
              c. Class 1.3 - Other Secured Claims. . . . . .  33
       2.    Class 2.1 Claim - Columbia Secured Claim. . . .  33
       3.    Class 3 Claims - Unsecured Claims . . . . . . .  33

              a. Class 3.1 - Unsecured Claims of
                  $25,000 or Less. . . . . . . . . . . . . .  33

              b. Class 3.2 - Unsecured Customer Claims
                  and GRI Claims . . . . . . . . . . . . . .  34

              c. Class 3.3 - Producer Claims . . . . . . . .  34
              d. Class 3.4 - General Unsecured Claims. . . .  34
              e. Class 3.5 - Columbia Unsecured Claim. . . .  34
       4.   Class 4 Claims - Assumed Claims. . . . . . . . .  34
              a. Class 4.1 - Environmental Claims. . . . . .  34
</TABLE>

                                      -iv-
<PAGE>   420
<TABLE>
<CAPTION>
                                                             Page
                                                             ----
<S>                                                          <C>

              b.   Class 4.2 - Certain Condemnation
                     Claims. . . . . . . . . . . . . . . . .  35
              c.   Class 4.3 - Pension Claims. . . . . . . .  35

              d.   Class 4.4 - Surety Bond Related Claims. .  35
              e.   Class 4.5 - Affiliate Tax Claims. . . . .  36
    D.   Class of Interests

    Class 5 Interests - Common Stock of TCO. . . . . . . . .  36

III.     TREATMENT OF CLAIMS AND INTERESTS . . . . . . . . .  36
    A.   Treatment of Unclassified Claims. . . . . . . . . .  36

         1.   Administrative Claims. . . . . . . . . . . . .  36
              a. Professional Claims . . . . . . . . . . . .  36
              b. Post-Petition Operational Claims. . . . . .  36
              c. Assumed Executory Contracts Claims  . . . .  36
              d. U.S. Trustee's Fees . . . . . . . . . . . .  37
              e. Miscellaneous Administrative Claims . . . .  37
              f. Administrative Recoupment Claims. . . . . .  38
         2.   Priority Tax Claims. . . . . . . . . . . . . .  38
         3.   East Lynn Condemnation Obligation. . . . . . .  39

    B.   Treatment of Classified Claims. . . . . . . . . . .  39
         1.   Class 1 Claims - Secured Claims. . . . . . . .  39

              a. Class 1.1 - DIP Facility Claim. . . . . . .  39
              b. Class 1.2 - Secured Producer Claims . . . .  39
              c. Class 1.3 - Other Secured Claims. . . . . .  40
         2.   Class 2.1 - Columbia Secured Claim . . . . . .  41
         3.   Class 3 Claims - Unsecured Claims. . . . . . .  41

              a. Settlement Values and Allowance
                  Amounts. . . . . . . . . . . . . . . . . .  41

              b. Class 3.1 - Unsecured Claims of
                  $25,000 or Less. . . . . . . . . . . . . .  44

              c. Class 3.2 - Unsecured Customer
                  Claims and GRI Claims. . . . . . . . . . .  45

              d. Class 3.3 - Producer Claims . . . . . . . .  48
              e. Class 3.4 - General Unsecured
                   Claims. . . . . . . . . . . . . . . . . .  52
              f. Class 3.5 - The Columbia Unsecured
                  Claim. . . . . . . . . . . . . . . . . . .  53
         4.   Class 4 Claims - Other Claims. . . . . . . . .  54

              a. Class 4.1 - Environmental Claims. . . . . .  54
              b. Class 4.2 - Certain Condemnation
                  Claims . . . . . . . . . . . . . . . . . .  54
              c. Class 4.3 - Pension Claims. . . . . . . . .  54
              d. Class 4.4 - Surety Bond Related Claims. . .  54
              e. Class 4.5 - Affiliate Tax Claims. . . . . .  55

    C.   Treatment of Interests. . . . . . . . . . . . . . .  55
        1.    Class 5 Interests - Common Stock of TCO. . . .  55

IV. PROVISIONS GOVERNING DISTRIBUTIONS . . . . . . . . . . .  55
    A.   Transactions On the Effective Date. . . . . . . . .  55
    B.   Distributions on Claims . . . . . . . . . . . . . .  56
</TABLE>

                                      -v-
<PAGE>   421
<TABLE>
<CAPTION>
                                                             Page
                                                             ----
<S>                                                           <C>
    C.   Reorganized TCO As Disbursing Agent . . . . . . . .  57
    D.   Delivery of Distributions; Unclaimed
           Distributions . . . . . . . . . . . . . . . . . .  57
         1.   Delivery of Distributions in General . . . . .  57
         2.   Unclaimed Distributions. . . . . . . . . . . .  57

    E.   Means of Cash Payments. . . . . . . . . . . . . . .  59
    F.   Setoffs . . . . . . . . . . . . . . . . . . . . . .  59
    G.   Limit on Distributions. . . . . . . . . . . . . . .  60
    H.   Continuation of Certain Retirement, Workers'
           Compensation and Long-Term Disability Benefits. .  60

V.  MEANS FOR IMPLEMENTATION OF THE PLAN . . . . . . . . . .  60

    A.   Continued Corporate Existence and Vesting of
            Assets in Reorganized TCO. . . . . . . . . . . .  60

    B.   Corporate Governance, Directors and Officers. . . .  61
         1.   Certificate of Incorporation and By-Laws . . .  61
         2.   Directors and Officers of Reorganized TCO. . .  62
         3.   Corporate Action . . . . . . . . . . . . . . .  62

    C.   Preservation of Rights of Action. . . . . . . . . .  62
    D.   The Claims Estimation Procedures. . . . . . . . . .  63
    E.   Release of Liens. . . . . . . . . . . . . . . . . .  63
    F.   TCO's Funding Obligations . . . . . . . . . . . . .  64
    G.   Columbia Guaranty . . . . . . . . . . . . . . . . .  64

VI. BAR DATES; PROCEDURES FOR ESTABLISHING ALLOWED CLAIMS
    AND FOR RESOLVING DISPUTED CLAIMS. . . . . . . . . . . .  65
    A.   Bar Date for Objections to Certain
           Non-Administrative Claims . . . . . . . . . . . .  65

         1.   Claims Subject to the Claims Estimation
                Procedures . . . . . . . . . . . . . . . . .  65

         2.   Other Non-Administrative Claims. . . . . . . .  65
    B.   Bar Dates for Certain Administrative Claims . . . .  65

         1.   Professional Claims  . . . . . . . . . . . . .  65
         2.   Bar Date for Administrative Claims Arising
                from Rejection of Executory Contracts or
                Unexpired Leases . . . . . . . . . . . . . .  66

    C.   Authority to Prosecute Objections . . . . . . . . .  66

VII.     TREATMENT OF EXECUTORY CONTRACTS AND
    UNEXPIRED LEASES; ADDITIONAL BAR DATES . . . . . . . . .  67
    A.   General . . . . . . . . . . . . . . . . . . . . . .  67
    B.   Payments Related to Assumption of Executory

          Contracts and Unexpired Leases . . . . . . . . . .  67
    C.   Bar Date for Rejection Damages. . . . . . . . . . .  68
    D.   Executory Contracts and Unexpired Leases Entered
           Into and Other Obligations Incurred After the
           Petition Date . . . . . . . . . . . . . . . . . .  69
</TABLE>

                                      -vi-
<PAGE>   422
<TABLE>
<CAPTION>
                                                             Page
                                                             ----
<S>                                                           <C>

VIII.    CONDITIONS PRECEDENT TO CONFIRMATION
    AND CONSUMMATION OF THE PLAN . . . . . . . . . . . . . .  69
    A.   Conditions to Confirmation. . . . . . . . . . . . .  69
    B.   Conditions to Effective Date. . . . . . . . . . . .  71
    C.   Waiver of Conditions to Confirmation or
          Effective Date . . . . . . . . . . . . . . . . . .  73
    D.   Effect of Vacating Confirmation Order . . . . . . .  74

IX. CONFIRMABILITY AND SEVERABILITY

    OF THE PLAN AND CRAMDOWN . . . . . . . . . . . . . . . .  75
    A.   Confirmability and Severability of the Plan . . . .  75
    B.   Cramdown. . . . . . . . . . . . . . . . . . . . . .  75

X.  DISCHARGE, RELEASES, SETTLEMENT OF CLAIMS AND
     INJUNCTION. . . . . . . . . . . . . . . . . . . . . . .  75

    A.   Discharge of Claims and Termination of Interests. .  75
    B.   Injunction. . . . . . . . . . . . . . . . . . . . .  77
    C.   Limitation of Liability . . . . . . . . . . . . . .  78
    D.   Releases. . . . . . . . . . . . . . . . . . . . . .  79

XI. RETENTION OF JURISDICTION. . . . . . . . . . . . . . . .  80

XII.     MISCELLANEOUS PROVISIONS. . . . . . . . . . . . . .  83
    A.   Dissolution of the Creditors' Committee and the

          Customers' Committee . . . . . . . . . . . . . . .  83
    B.   Modification of the Plan. . . . . . . . . . . . . .  85
    C.   Revocation of the Plan. . . . . . . . . . . . . . .  85
    D.   Severability of Plan Provisions . . . . . . . . . .  86
    E.   Successors and Assigns. . . . . . . . . . . . . . .  87
    F.   Service of Documents on TCO or Reorganized TCO. . .  87
    G.   Payment and Withholding of Taxes. . . . . . . . . .  88

CONFIRMATION REQUEST . . . . . . . . . . . . . . . . . . . .  89


    EXHIBIT A - Affidavit of John H. Croom . . . . . . . . . A-1
    EXHIBIT B - Calculation of Post-Petition Interest on

                  the Columbia Secured Claim . . . . . . . . B-1
    EXHIBIT C - Waiver Agreement . . . . . . . . . . . . . . C-1
    EXHIBIT D - Producer Settlement Agreement. . . . . . . . D-1
    EXHIBIT E - Customer Settlement Proposal . . . . . . . . E-1
    EXHIBIT F - Amended and Restated Certificate

                  of Incorporation . . . . . . . . . . . . . . .
    SCHEDULE I - Original Settlement Values. . . . . . . . . . .
    SCHEDULE II - Allowance Amounts. . . . . . . . . . . . . . .

     SCHEDULE III - Settlement Values on Plan Mailing Date. . . .
</TABLE>

                                     -vii-
<PAGE>   423


INTRODUCTION

     Columbia Gas Transmission Corporation ("TCO") proposes the following plan
of reorganization (the "Plan") (amending its Plan of Reorganization dated
January 18, 1994) providing for the resolution of TCO's outstanding creditor
Claims and equity Interests. The Columbia Gas System, Inc. ("Columbia"), the
sole shareholder of TCO, has been authorized by its Board of Directors to
support the Plan and to enter into the Columbia Omnibus Settlement (as defined
herein), subject to the necessary approvals of the Bankruptcy Court having
jurisdiction over Columbia's Chapter 11 case and of the United States Securities
and Exchange Commission pursuant to the Public Utility Holding Company Act of
1935, and any other regulatory approvals which Columbia may be required to
obtain. See affidavit of John H. Croom annexed as Exhibit A hereto. In addition,
the Customer Settlement Proposal is subject to the approval of the FERC.

     For a discussion of TCO's history, businesses, properties, results of
operations and projections for future operations and for a summary and analysis
of the Plan and related matters, reference should be made to the First Amended
Disclosure Statement pursuant to section 1125 of the Bankruptcy Code for the
First Amended Plan of Reorganization of Columbia Gas Transmission Corporation
(the "Disclosure Statement") Filed by TCO with the Bankruptcy Court. TCO and,
subject to the approvals described above, Columbia are the proponents of the
Plan within the meaning of section 1129 of the Bankruptcy Code.
<PAGE>   424
        ALL HOLDERS OF CLAIMS AGAINST TCO SHOULD READ THE PLAN AND THE
DISCLOSURE STATEMENT IN THEIR ENTIRETY BEFORE VOTING TO ACCEPT OR REJECT THE
PLAN

I.        DEFINED TERMS, RULES OF INTERPRETATION,
          COMPUTATION OF TIME AND GOVERNING LAW

A.        DEFINED TERMS

          As used in the Plan, the capitalized terms below have the following
meanings. Any term used in the Plan that is not defined herein, but that is used
in the Bankruptcy Code or the Bankruptcy Rules, shall have the meaning assigned
to that term in the Bankruptcy Code or the Bankruptcy Rules.

          1. "ACCEPTING PRODUCER" means any Producer that, prior to the Voting
Deadline, accepts the Settlement Value proposed for its Producer Claim or, after
the Voting Deadline but prior to the Effective Date, executes a Producer
Settlement Agreement.

          2. "ACCEPTING PRODUCER PERCENTAGE" means the percentage which the
aggregate of the Original Settlement Values proposed for the Claims of Accepting
Producers is of the aggregate of all Original Settlement Values proposed by TCO
under the Plan.

          3. "ACCEPTING 3.2 CLAIMANT" means, if Class 3.2 votes to accept the
Plan, a holder of a Class 3.2 Claim that either (i) votes in favor of the Plan
(and accordingly, by the terms of the ballot by which such vote is cast, agrees
to be bound by the Waiver Agreement) or (ii) does not vote for the Plan but,
prior to the Effective Date, executes a written Waiver Agreement.

          4.       "ACTUAL TARGET PRODUCER DISTRIBUTION" means the amount 
derived by (a) multiplying (i) the aggregate of the Allowed amounts of Producer
Claims held by Producers in Class 3.3 by 

                                      - 2 -
<PAGE>   425

(ii) the Target Distribution Percentage and (b) adding the aggregate of the
Allowed amounts of Producer Claims held by Producers in Classes 1.2 and 3.1.

          5.       "ADDITIONAL DISTRIBUTION" means one half of the amount, if 
any, by which the Actual Target Producer Distribution is exceeded by the
Projected Target Producer Distribution.

          6.       "ADMINISTRATIVE CLAIM" means a Claim for costs and expenses 
of administration allowed under sections 503, 507(a)(1), 507(b) or 1114(e)(2) of
the Bankruptcy Code, as more fully described in Section II.B.1, "Administrative
Claims."

          7. "ADMINISTRATIVE FEE ORDER" means the Administrative Order under
sections 105(a) and 331 of the Bankruptcy Code Establishing Procedures for
Interim Compensation and Reimbursement of Expenses for all Professionals entered
in the Reorganization Case by the Bankruptcy Court on November 15, 1991.

          8.       "ADMINISTRATIVE RECOUPMENT CLAIM" means a Recoupment Claim 
described in Section II.B.1.f.

          9.       "AFFILIATE TAX CLAIM" means a Claim of Columbia or any of its
subsidiaries for any amount owed by TCO under the Tax Allocation Agreement.

          10.      "ALLOWANCE AMOUNT" has the meaning set forth in Section 
III.B.3.a.
          11.      "ALLOWED" when used with respect to a Claim, means a Claim 
against TCO:
                                      - 3 -
<PAGE>   426

                   a.      which has been scheduled as undisputed, not 
contingent and liquidated in the Schedule of Liabilities, and as to which no
proof of Claim or objection has been timely Filed;

                   b.      as to which a proof of Claim has been timely Filed 
and either:
                            i.      no objection thereto has been timely Filed; 
                                    or

                           ii.      the Claim has been allowed (but only to the
                                    extent allowed) (a) by a Final Order or (b)
                                    in the case of (i) a Claim held by a
                                    Rejecting Producer or (ii) a General
                                    Unsecured Claim the holder of which has
                                    rejected its Allowance Amount, by an order
                                    of the Bankruptcy Court, unless such order
                                    of the Bankruptcy Court has been appealed by
                                    the holder of such Claim or by Reorganized
                                    TCO or any other party and Reorganized TCO
                                    or such other party shall not have obtained
                                    a stay pending appeal;

                   c.   which, in the case of the Columbia Secured Claim, the 
Columbia Unsecured Claim, Customer Claims and Producer Claims, has been allowed
under the provisions of the Plan; or

                   d.      which is a Professional Claim for which a fee award 
amount has been approved by Final Order of the Bankruptcy Court.

          12.      "ASSUMED EXECUTORY CONTRACT CLAIM" means a Claim described in
 Section II.B.1.c hereof.

          13. "AVOIDANCE CLAIM" means a claim, other than an Intercompany Claim,
which a trustee, debtor in possession or appropriate party-in-interest may
assert under sections 542, 544, 545, 547, 548, 549, 550 or 551 of the Bankruptcy
Code.

                                      - 4 -
<PAGE>   427

          14.      "BANKRUPTCY CODE" means title 11 of the United States Code, 
Sections 101 et seq., as now in effect or hereafter amended. 

          15.      "BANKRUPTCY COURT" means the United States Bankruptcy Court 
for the District of Delaware or, if such court ceases to exercise jurisdiction
over the Reorganization Case, the court or adjunct thereof that exercises
jurisdiction over the Reorganization Case.

          16.      "BANKRUPTCY RULES" means, collectively, the Federal Rules of 
Bankruptcy Procedure and the Local Bankruptcy Rules for the District of
Delaware, as now in effect or as the same may from time to time hereafter be
amended.

          17.      "BAR DATE" means any applicable date by which proofs of Claim
must have been or, in the future, must be, Filed, as established by the Bar Date
Order, the Plan, or the Confirmation Order.

          18.       "BAR DATE ORDER" means, collectively, the orders of the 
Bankruptcy Court establishing bar dates by which proofs of Claim must have been,
or in the future must be, Filed, including the Order Establishing Bar Date for
Filing Proofs of Claim entered by the Bankruptcy Court on December 13, 1991.

          19.      "BG&E CASE" means the case on remand to FERC from the United 
States Court of Appeals for the District of Columbia Circuit styled Baltimore
Gas & Electric Co. v. FERC, D.C. Cir. No. 88-1779 involving TCO's obligation to
refund to Customers certain costs billed to them by TCO.

                                      -5-
<PAGE>   428

          20.      "BG&E CLAIM" means a Claim of a Customer for refund of 
recoveries of certain costs billed to TCO by its pipeline suppliers collected by
TCO from its Customers, and which are the subject of the BG&E Case.

          21.      "BUSINESS DAY" means any day which is not a Saturday, a 
Sunday or a day which in Wilmington, Delaware, Charleston, West Virginia or New
York, New York is a legal holiday or a day on which banking institutions are
authorized or required by law or other government action to close.

          22. "CALENDAR QUARTER" means a three (3) month period ending on any
March 31, June 30, September 30 or December 31; provided that the first Calendar
Quarter shall be deemed to be the period commencing on the Effective Date and
ending on the first day that is (x) the last day of such a three (3) month
period and (y) more than sixty days after the Effective Date.

          23. "CASH COLLATERAL ORDERS" means the final orders of the Bankruptcy
Court, dated July 31, 1991 and August 23, 1991, which respectively authorize TCO
to use the cash collateral pledged by TCO to Columbia pursuant to the Inventory
Loan Agreement and the Indenture and Deed of Trust securing the First Mortgage
Bonds and grant to Columbia and certain other secured parties certain
replacement liens and security interests in TCO's assets.

          24.      "CLAIM" means, as against TCO,

                   a.   a right to payment, whether or not such right is reduced
to judgment, liquidated, unliquidated, fixed, contingent,

                                      -6-
<PAGE>   429

matured, unmatured, disputed, undisputed, legal, equitable, secured or
unsecured; or

                   b. a right to an equitable remedy for breach of performance
if such breach gives rise to a right to payment, whether or not such right to an
equitable remedy is reduced to judgment, fixed, contingent, matured, unmatured,
disputed, undisputed, secured or unsecured.

          25.      "CLAIMHOLDER" means the holder of a Claim and, when used in 
conjunction with a Class or type of Claim, means a holder of a Claim in such
Class or of such type.

          26. "CLAIMS ESTIMATION PROCEDURES" means the procedures established by
orders of the Bankruptcy Court dated August 27, 1992 and October 9, 1992, to
liquidate disputed, contingent or unliquidated Claims of Producers, as the same
may be amended from time to time by the Bankruptcy Court.

          27.      "CLASS" means a class of Claims or Interests.

          28.      "CNR" means Columbia Natural Resources, Inc., a Texas 
corporation.
          29.      "COLUMBIA" means The Columbia Gas System, Inc., a Delaware 
corporation.

          30. "COLUMBIA CUSTOMER GUARANTY" means Columbia's guaranty (subject to
any necessary Bankruptcy Court and regulatory approvals) of the payment of
distributions on account of Refund Claims to Accepting 3.2 Claimants and of the
financial integrity of the Customer Settlement Proposal. Specifically, Columbia
has agreed (i) that the Customer Settlement Proposal will not be 

                                      -7-
<PAGE>   430

"retraded" with the Customers so as to reduce the financial benefits of the
settlement to them, (ii) that the financial benefits of the Customer Settlement
Proposal will not be adversely affected by virtue of any subsequent settlement
reached with other parties in either TCO's or Columbia's bankruptcy proceedings,
and (iii) that Columbia and TCO will include the Customer Settlement Proposal
and Columbia's guaranty in their respective Plans. The foregoing guaranty does
not apply to any modification imposed on the Customer Settlement Proposal or on
a Plan incorporating the Customer Settlement Proposal, by the action of any
judicial or regulatory authority.

          31.      "COLUMBIA GUARANTY" has the meaning set forth in Section V.G.

          32. "COLUMBIA OMNIBUS SETTLEMENT" means Columbia's agreement,
conditioned on the Plan becoming effective without any modification that is not
consented to by Columbia, to facilitate the prompt emergence of TCO and Columbia
from their respective Chapter 11 proceedings by (i) assisting TCO to monetize
the Plan which is estimated to provide for value to be distributed to TCO
Creditors of approximately $3.9 billion (in the event of 100% acceptance of
Settlement Values), which distribution, in the case of third party Creditors,
will be substantially in cash; (ii) providing a guaranty of payment of
distributions to TCO's Creditors as provided under the Plan (excluding assumed
obligations); (iii) providing the Columbia Customer Guaranty; (iv) consenting to
the assumption by Reorganized TCO of certain 

                                      -8-
<PAGE>   431

pre-petition environmental Claims of governmental agencies and certain other
Claims, and (v) accepting new secured debt securities of Reorganized TCO (rather
than cash) for a portion of the Columbia Secured Claim and contributing the
balance of the Columbia Secured Claim to Reorganized TCO's equity, in
consideration for (a) the retention by Columbia of the equity of Reorganized
TCO, (b) the settlement of litigation over the liquidation of the Producer
Claims of the Initial Accepting Producers, of Customer Claims and of certain
other Disputed Claims, and (c) a settlement of the Claims raised or which could
have been raised in the Intercompany Claims Litigation among Columbia, CNR, TCO,
the Creditors' Committee and the Customers' Committee and all other Claims and
disputes between TCO's Creditors and Columbia and various other Claims and
disputes between TCO's Creditors and TCO as provided herein (other than Claims
arising in the normal course of business subsequent to the Petition Date between
Creditors and TCO or Columbia).

          33.      "COLUMBIA SECURED CLAIM" means, as of the Effective Date, the
 aggregate of:

                   a. (i) the unpaid principal as of the Petition Date owing in
respect of the First Mortgage Bonds, (ii) the unpaid principal and accrued and
unpaid interest owing as of the Petition Date in respect of the Inventory
Financing Agreement, and (iii) the interest on all of such unpaid principal and
interest from the Petition Date to the Effective Date, calculated in the manner
described in Exhibit B;


                                      -9-
<PAGE>   432


                   b.   all amounts to which Columbia is entitled under the Cash
Collateral Orders, including post-petition interest as Allowed by the Bankruptcy
Court; and

                   c.      all amounts to which Columbia is entitled for 
reasonable fees, costs and charges approved by the Bankruptcy Court under
Section 506 of the Bankruptcy Code.

          34.      "COLUMBIA TRANSMISSION INVESTMENT CORPORATION" has the 
meaning set forth in Section IV.A.4.

          35.      "COLUMBIA UNSECURED CLAIM" means Columbia's Claims against 
TCO for the repayment of principal and interest arising under and related to
unsecured loans made by Columbia to TCO under certain promissory notes and
revolving credit notes, as more specifically set forth in Columbia's proof of
Claim numbered 11442, Filed on March 17, 1992.

          36.      "CONFIRMATION" means the entry of the Confirmation Order.

          37.      "CONFIRMATION DATE" means the date on which the Bankruptcy 
Court enters the Confirmation Order on its docket.
          38.      "CONFIRMATION ORDER" means the order of the Bankruptcy Court
confirming the Plan pursuant to section 1129 of the Bankruptcy Code. 
          39.      "CREDITOR" means

                   a.   an entity that has a Claim against TCO that arose at the
 time of or before the Petition Date; or

                                      -10-
<PAGE>   433

                   b.   an entity that has a Claim against the Estate of a kind 
specified in sections 502(g), 502(h) or 502(i) of the Bankruptcy Code.

          40.      "CREDITORS' COMMITTEE" means the Official Committee of 
Unsecured Creditors appointed in the Reorganization Case pursuant to section
1102 of the Bankruptcy Code.

          41.      "CUSTOMER" means any entity that purchases or has purchased 
natural gas or services from TCO pursuant to the FERC Gas Tariff or agreements
entered into in connection therewith.

          42.      "CUSTOMERS' COMMITTEE" means the Official Committee of 
Customers of TCO appointed in the Reorganization Case pursuant to section 1102
of the Bankruptcy Code.

          43. "CUSTOMER REGULATORY CLAIM" means a Claim of a Customer arising
under or in connection with the FERC Gas Tariff or any of the services provided
by TCO pursuant to the jurisdiction of FERC, including, but not limited to, any
Refund Claim. Most Customer Regulatory Claims are listed in Appendix M, Schedule
1 of the Customer Settlement Proposal.

          44. "CUSTOMER SETTLEMENT PROPOSAL" means the terms and agreements
embodied in the Stipulation and Agreement dated April 17, 1995, filed by TCO
with the FERC, a copy of which is annexed hereto as Exhibit E.

          45. "DEFICIENCY CLAIM" means the amount, if any, by which the Allowed
amount of a Secured Claim, exclusive of any post-petition interest, exceeds the
value of the collateral securing such Secured Claim as determined by the
Bankruptcy Court.


                                      -11-
<PAGE>   434

          46. "DIP FACILITY" means the Amended and Restated Secured Revolving
Credit Agreement, dated as of April 2, 1992, between TCO and Chemical Bank, as
successor to Manufacturers Hanover Trust Company, as amended from time to time.

          47.      "DISCLOSURE STATEMENT" has the meaning set forth in the 
"Introduction" to this Plan.

          48. "DISPUTED" when used with respect to a Claim, means a Claim
against TCO that is not an Allowed Claim and that has not been barred or
otherwise disallowed or discharged. If an objection is timely Filed and relates
to the allowance of only a portion of a Claim, such Claim shall be a Disputed
Claim to the extent of the portion of such Claim to which such objection
relates.

          49. "DISSENTING 3.2 CLAIMANT" means, if Class 3.2 votes to accept the
Plan, any holder of a Class 3.2 Claim that is not an Accepting 3.2 Claimant,
and, if Class 3.2 rejects the Plan, any holder of a Class 3.2 Claim.

          50. "DISTRIBUTION DATE" means the date on which at least eighty (80%)
percent of the total amounts payable on the Effective Date with respect to
Allowed Claims of the Accepting Producers and the holders of Allowed General
Unsecured Claims shall have been paid.

          51. "EAST LYNN CONDEMNATION AWARD" means the funds received by TCO for
the damages arising from the condemnation of the East Lynn Property by the
United States government and held in trust by TCO on behalf and for the benefit
of CNR, in such 

                                      -12-
<PAGE>   435

form as such funds are from time to time invested, together with all income
earned on such funds while so held, net of applicable taxes, if any, payable by
TCO in respect of such award or such income.

          52.      "EAST LYNN CONDEMNATION OBLIGATION" means the obligation of 
TCO set forth in Section II.B.3.

          53.      "EAST LYNN PROPERTY" means the real estate that was the 
subject of a taking by eminent domain by the United States of America in the
cases styled United States v. 16,286.08 Acres of Land Situate in Wayne County,
West Virginia (Case No. CA77-3324-H) and United States v. 298.25 Acres of Land
Situate in Wayne County, West Virginia (Case No. CA75-0061-H).

          54.      "EFFECTIVE DATE" means the first Business Day that is more 
than ten (10) days after the Confirmation Date and on which (a) no stay of the
Confirmation Order is in effect and (b) all conditions to the Effective Date set
forth in Section VIII.B have been satisfied or, if waivable, waived.

          55.      "ENVIRONMENTAL CLAIMS" has the meaning set forth in Section 
II.C.4.a.

          56.      "EPA ORDER" has the meaning set forth in Section III.B.4.a.

          57.      "ESTATE" means the estate created for TCO in the  
Reorganization Case pursuant to section 541 of the Bankruptcy Code.

          58.      "EXCESS AMOUNT" means the amount by which the Target 
Distribution Percentage of the Accepting Producers' Class 3.3 


                                      -13-
<PAGE>   436

Allowed Claims would exceed the Final Distribution Percentage of such Claims.

          59.      "FEE EXAMINER" means the fee examiner appointed by the 
Bankruptcy Court pursuant to the Court's January 8, 1992 Order Retaining
Examiner on Fees and Expenses.

          60.      "FERC" means the Federal Energy Regulatory Commission.

          61. "FERC GAS TARIFF" means the documents filed by TCO with, and in
force from time to time pursuant to procedures established by, FERC setting
forth the rates at and the conditions under which TCO renders natural
gas-related services to its Customers.

          62.      "FERC INTEREST" means interest calculated in accordance with 
the provisions of Section 154.67 of the FERC's Regulations, 18 C.F.R. Section
154.67.
          63. "FERC INTEREST ORDER" means the FERC order dated June 23, 1994, 67
FERC. 

          61,384 (1994) providing that TCO must pay FERC Interest on flowthrough
refunds from the dates that TCO collected those refunds until TCO deposited such
refunds into the RIA Account and that TCO must pay interest actually earned on
such refunds after the date of their deposit in the RIA Account.

          64. "FILE" or "Filed" means file or filed in the Reorganization Case
with the Bankruptcy Court, or in the case of proofs of Claim, (a) file or filed
with Poorman-Douglas Corporation, the claims agent designated by order of the
Bankruptcy Court, or (b) deemed so filed pursuant to section 1111(a) of the
Bankruptcy Code.


                                      -14-
<PAGE>   437

          65.      "FINAL ALLOWANCE DATE" means the first date upon which all 
Producer Claims have become Allowed, or disallowed by a Final Order, or
withdrawn.

          66. "FINAL DISTRIBUTION PERCENTAGE" means the percentage which, if
multiplied by the aggregate of all Allowed Class 3.3 Claims, would produce an
amount which, when added to the sum of the amount of all distributions on
Allowed Class 3.1 Producer Claims and Allowed Class 1.2 Claims less the amount
of the Projected Target Producer Distribution, equals the Excess Amount.

          67. "FINAL ORDER" means an order or judgment of the Bankruptcy Court,
or other court of competent jurisdiction, entered on the docket in the
Reorganization Case, which has not been reversed, vacated or stayed, and as to
which the time to appeal or seek certiorari, move to reconsider, move to amend
judgment or move for a new trial, has expired with no appeal or petition for 
certiorari having been timely taken or filed, or no motion for new trial,
reconsideration or amendment to judgment having been granted, or as to which any
appeal that has been or may be taken or any petition for certiorari that has
been or may be filed has been resolved by the highest court to which the order
or judgment was appealed or from which certiorari was sought.

          68. "FINAL FERC ORDER" means a FERC order as to which (a) no request
for rehearing has been filed on the day after the last date for filing a request
for rehearing, or (b) if requests for rehearing are filed, a FERC order has been
entered ruling on all 


                                      -15-
<PAGE>   438

pending requests for rehearing, as to which the time for filing any further
requests for rehearing has passed without further rehearing requests having
been filed.

          69.      "FIRST MORTGAGE BONDS" means those certain bonds, designated
Series A, B, D, E and F, issued by TCO pursuant to and secured by the Indenture
of Mortgage and Deed of Trust dated August 30, 1985, made by TCO in favor of
Wilmington Trust Company as Trustee.

          70.      "GENERAL UNSECURED CLAIM" means any Unsecured Claim that is
not a Producer Claim or a Customer Regulatory Claim, including a Claim arising
prior to the Petition Date from the sale of goods or the rendering of services
to TCO in the ordinary course of its business including, without limitation,
all Claims of upstream pipelines, other than a Claim arising from exit fees
paid or to be paid to upstream pipelines pursuant to any agreement for the
termination of upstream pipeline service contracts and including the
Subordinated Tax Claims.

          71.      "GRI" means the Gas Research Institute.

          72.      "GRI CLAIM" means any pre-petition Claim of GRI for monies
collected by TCO from Customers on behalf of GRI.

          73.      "HOLDBACK AMOUNT" means the amount, if any, by which the
Target Distribution Percentage of the Allowed Claims of the Accepting Producers
exceeds the Initial Distribution Percentage of such Claims.





                                     - 16 -
<PAGE>   439

          74.      "INITIAL ACCEPTING PRODUCER" means a Producer that has
agreed to the Initial Accepting Producer Settlement and that will execute the
Initial Producer Settlement Agreement.

          75.      "INITIAL ACCEPTING PRODUCER SETTLEMENT" means the settlement
among TCO, Columbia, and the Initial Accepting Producers, the terms of which
will be documented in the Initial Accepting Producer Settlement Agreement.

          76.      "INITIAL ACCEPTING PRODUCER SETTLEMENT AGREEMENT" means the
proposed Producer Agreement to Settle Claims subject to Plan of Reorganization
dated as of April   , 1995.

          77.      "INITIAL DISTRIBUTION PERCENTAGE" means 68.875%, the
percentage derived by multiplying the Target Distribution Percentage by ninety
five (95%) percent.

          78.      "INTERCOMPANY CLAIMS" means the claims and causes of action
asserted against Columbia and CNR in the Intercompany Claims Litigation and any
claims and causes of action against Columbia or CNR arising out of the same or
similar facts and circumstances.

          79.      "INTERCOMPANY CLAIMS LITIGATION" means the litigation
against Columbia and CNR on behalf of TCO by the Creditors' Committee and the
Customers' Committee in the complaints styled and numbered Columbia Gas
Transmission Corporation v. The Columbia Gas System, Inc. and Columbia Natural
Resources, Inc., Adv. No. A92-35, filed on March 19, 1992 and May 26, 1992,
pending before the United States District Court for the District of Delaware.





                                     - 17 -
<PAGE>   440

          80.      "INTERESTS" means the rights of Columbia as the sole holder
of all of the issued and outstanding common stock of TCO.

          81.      "INVENTORY FINANCING AGREEMENT" means that certain Inventory
Financing Agreement dated June 19, 1985 between Columbia and TCO, as the same
may have been amended from time to time.

          82.      "INVENTORY LOAN AGREEMENTS" means the Inventory Financing
Agreement and the related Security Agreement dated as of June 19, 1985, between
TCO and Wilmington Trust Company, as the same may have been amended from time
to time.

          83.      "INVESTMENT GUIDELINES" means the guidelines for investment
of TCO's cash, cash equivalents, deposit accounts and other short-term
investments promulgated by TCO as restricted by the order of the Third Circuit
Court of Appeals dated August 29, 1994.

          84.      "IRS" means the United States Internal Revenue Service.

          85.      "IRS ORDER" means the order of the Bankruptcy Court dated
October 12, 1994 approving the IRS Settlement Agreement.

          86.      "IRS SETTLEMENT AGREEMENT" means that certain Stipulation
and Order of Settlement of Proofs of Claim Filed by the IRS, dated October 12,
1994, by and between TCO and the IRS.

          87.      "KENTUCKY ENVIRONMENTAL ORDERS" has the meaning set forth in
Section III.B.4.a.

          88.      "LOWEST INTERMEDIATE BALANCE AMOUNT" means the approximately
$3.3 million determined under the Trust Fund





                                     - 18 -
<PAGE>   441

Decision to be distributable as trust funds after application of the "lowest
intermediate balance" principle, together with interest thereon calculated in
accordance with the FERC Interest Order.

          89.      "MISCELLANEOUS ADMINISTRATIVE CLAIM" means a Claim described
in Section II.B.1.e.

          90.      "1990 RATE CASE" means TCO's general rate case under Section
4(e) of the NGA, FERC Docket No. RP90-108, which went into effect, subject to
refund, on November 1, 1990.

          91.      "1990 RATE CASE CLAIM" means any pre- or post-petition
Claim, whether or not listed on the Schedule of Liabilities and whether or not
Filed, of a Customer arising from the 1990 Rate Case or which is the subject of
or has been settled by the terms of the 1990 Rate Case Settlement.

          92.      "1990 RATE CASE SETTLEMENT" means the settlement of the 1990
Rate Case among TCO and certain other parties thereto, approved by FERC on
October 15, 1992.

          93.      "NGA" means the Natural Gas Act, 15 U.S.C. Sections 717-717W
(1988).

          94.      "OMNIBUS FERC MOTION" means the motion Filed by TCO on
August 23, 1991 entitled "Motion for Order Authorizing Columbia Gas
Transmission Corporation to Comply with its Federal Energy Regulatory
Commission Gas Tariff and Orders and Regulations of the Federal Energy
Regulatory Commission."





                                     - 19 -
<PAGE>   442

          95.      "OMNIBUS FERC MOTION CLAIM" means any GRI Claim and any
pre-petition Claim of a Customer for a regulatory refund that is the subject of
the Omnibus FERC Motion.

          96.      "ORIGINAL SETTLEMENT VALUES" means the Settlement Values
proposed for all Producer Claims which are set forth on Schedule I hereto.

          97.      "PBGC" means the Pension Benefit Guaranty Corporation.

          98.      "PENNSYLVANIA ENVIRONMENTAL ORDER" has the meaning set forth
in Section III.B.4.a.

          99.      "PETITION DATE" means July 31, 1991.

          100.     "PLAN" means this Amended Plan Of Reorganization of TCO and
all exhibits, attachments and schedules annexed hereto or referenced herein, as
the same may be amended, modified or supplemented with the prior consent of
Columbia.

          101.     "PLAN MAILING DATE" means that date set by order of the
Bankruptcy Court as the date for the mailing of the Plan to Creditors for
purposes of voting thereon.

          102.     "POST-PETITION OPERATIONAL CLAIM" means a Claim described in
Section II.B.1.b.

          103.     "PRIORITY TAX CLAIM" means a Claim described in Section
II.B.2.

          104.     "PRODUCER" means an entity that has made a first sale of
natural gas, as that term is defined in the Natural Gas Policy Act of 1978,
under a contract for the sale of natural gas to TCO.





                                     - 20 -
<PAGE>   443

          105.     "PRODUCER CLAIM" means a Claim of a Producer which, in any
way, arises under, is related to, or is asserted in connection with a contract
for the sale of natural gas to TCO.

          106.     "PRODUCER SETTLEMENT AGREEMENT" means an agreement, in the
form annexed hereto as Exhibit "D," pursuant to which a Producer agrees to
accept its Settlement Value and the treatment provided in the Plan for
Accepting Producers in full settlement of all Claims against TCO.

          107.     "PROFESSIONAL" means any professional employed in the
Reorganization Case pursuant to sections 327 or 1103 of the Bankruptcy Code and
any professional seeking compensation or reimbursement of expenses pursuant to
sections 330(a) and 503(b)(4) of the Bankruptcy Code.

          108.     "PROFESSIONAL CLAIM" means a Claim described in Section
II.B.1.a.

          109.     "PROJECTED TARGET PRODUCER DISTRIBUTION" means the amount
derived by (a) multiplying (i) the aggregate of the Original Settlement Values
proposed by TCO for the Claims of Producers in Class 3.3 by (ii) the Target
Distribution Percentage and (b) adding the aggregate of the Original Settlement
Values proposed by TCO for the Claims of Producers in Class 3.1.

          110.     "RECOUPMENT CLAIM" means the right of any Customer to recoup
from TCO or Reorganized TCO any Refund Claim, and the right of any Customer to
set off the WACOG surcharges against pre-petition Claims.





                                     - 21 -
<PAGE>   444

          111.     "REFUND CLAIM" means any pre-petition Claim, whether or not
listed on the Schedule of Liabilities and whether or not Filed, of a Customer
arising from any Refund Obligation, including, without limitation, any 1990
Rate Case Claim, any Omnibus FERC Motion Claim, any Section 4(e) Claim and any
Claim which is the subject of the BG&E Case.  The amount of any such Claim
shall include (i) in the case of any Claim that is attributable to funds which,
prior to the Petition Date, were transferred to TCO by third parties for
payment to the holder of such Claim (which funds may have included interest
paid by such third party to TCO) and which have been determined to be trust
funds, interest as prescribed by FERC from the date such funds were transferred
to TCO until the Petition Date, and thereafter, with respect only to the
approximately $3.3 million which under the Trust Fund Decision was determined
to be distributable as trust funds after application of the "lowest
intermediate balance" principle, in accordance with the FERC Interest Order,
(ii) in the case of any Claim attributable to any funds so transferred to TCO
for such purpose subsequent to the Petition Date, interest on the amount so
transferred at the rate income is actually earned by TCO on such funds, (iii)
in the case of any other such Claim attributable to funds transferred to or
collected by TCO prior to the Petition Date which are not trust funds, interest
as prescribed by FERC to the Petition Date, and (iv) in the case of any Claim
attributable to any funds transferred to TCO subsequent to the Petition Date;
but not





                                     - 22 -
<PAGE>   445

subject to the FERC Interest Order, with applicable FERC Interest.

          112.     "REFUND DISPUTE" means any right or claim of any Customer or
GRI with respect to any pre-petition Refund Obligation including, but not
limited to, (i) any right to appeal from or otherwise seek modification of the
Trust Fund Decision or otherwise seek more favorable treatment of its Omnibus
FERC Motion Claims (and any interest due thereon) than that provided in the
Trust Fund Decision, (ii) any right or Claim in respect of any 1990 Rate Case
Claim, (iii) any right to assert a Refund Claim which is the subject of the
BG&E Case, (iv) any Claim or right in respect of any other Refund Claim other
than as provided in the Plan, (v) any right of setoff or recoupment in respect
of any Customer Claim, (vi) any claim or right to compel assumption, rejection
or enforcement of its pre-petition Service Contracts except as otherwise
provided herein and (vii) any right or claim against Columbia in respect of or
arising from any Refund Claim.

          113.     "REFUND OBLIGATION" means any obligation on the part of TCO
arising prior to the Petition Date to make refunds, including applicable
interest thereon, to Customers pursuant to regulations or orders of FERC, or
any order of a court of competent jurisdiction on appeal of an order of FERC,
or the terms of the FERC Gas Tariff.  Refund Obligations include the GRI Claim.

          114.     "REJECTING PRODUCER" means any Producer that is not an
Accepting Producer.





                                     - 23 -
<PAGE>   446

          115.     "REORGANIZATION CASE" means the case commenced under Chapter
11 of the Bankruptcy Code bearing number 91-804 pending in the Bankruptcy Court
with respect to TCO.

          116.     "REORGANIZED TCO" means TCO (i) on the Effective Date to the
extent and for the purpose of performing those acts which are required under
the Plan to be performed by Reorganized TCO on the Effective Date and (ii)
after the Effective Date.

          117.     "RIA ACCOUNT" means the restricted investment arrangement
account established by TCO on March 2, 1993 pursuant to an order of the
Bankruptcy Court dated January 6, 1993.

          118.     "SCHEDULE OF LIABILITIES" means the schedule of assets and
liabilities Filed by TCO under section 521(1) of the Bankruptcy Code, as
amended from time to time.

          119.     "SECTION 4(E) CLAIM" means any pre-petition Refund
Obligations arising pursuant to TCO's general rate filings under section 4(e)
of the NGA, but shall not include any 1990 Rate Case Claim.

          120.     "SECURED CLAIM" means a pre-petition Claim that is secured
by a lien on property in which the Estate has an interest or that is subject to
setoff under section 553 of the Bankruptcy Code to the extent of the value of
the interest of the holder of such Claim in the Estate's interest in such
property or to the extent of the amount subject to setoff, as applicable, as
determined pursuant to section 506(a) of the Bankruptcy Code.

          121.     "SECURED TAX CLAIM" means a Secured Claim held by a taxing
authority.





                                     - 24 -
<PAGE>   447

          122.     "SERVICE CONTRACT" means a pre-petition agreement between
TCO and a Customer pursuant to which TCO provides or has provided sales,
transportation, storage or related services to such Customer pursuant to the
relevant provisions of the FERC Gas Tariff, any certificate of public
convenience and necessity or any other agreement.

          123.     "SETTLEMENT VALUE" has the meaning set forth in Section
III.B.3.a.

          124.     "STIPULATION OF DISMISSAL WITH PREJUDICE" has meaning set
forth in Section IV.A.5.

          125.     "SUBORDINATED TAX CLAIMS" means the Claims of state taxing
authorities for non-pecuniary tax penalties which were Allowed and equitably
subordinated to all Unsecured Claims, pursuant to an order of the Bankruptcy
Court dated May 6, 1994. TCO, however, expressly waives the enforcement of the
subordination granted by the order of the Bankruptcy Court and the Creditors'
Committee has consented to such waiver by TCO.

          126.     "SUPPLEMENTAL DISTRIBUTION PERCENTAGE" means that percentage
which, when added to the Initial Distribution Percentage, equals the Final
Distribution Percentage.

          127.     "SUPPLEMENTAL INTEREST PAYMENT" means, when applied to any
distribution to be made to a Creditor under the Plan, an amount of interest
calculated as follows:

                   If the Distribution Date occurs on or after January 31,
          1996, an amount equal to an accrual for the period from and including
          January 1, 1996 to but





                                     - 25 -
<PAGE>   448

          excluding the Distribution Date, on the amount of each such
          distribution at a rate per annum equal to the annualized rate realized
          by TCO on funds invested by it pursuant to the Investment Guidelines
          during such period.

          128.     "TARGET DISTRIBUTION PERCENTAGE" means seventy-two and
one-half (72.5%) percent.

          129.     "TAX ALLOCATION AGREEMENT" means the Tax Allocation
Agreement dated December 31, 1990, among Columbia and its subsidiaries,
including TCO, interpreted and applied in a manner consistent with its
interpretation and application prior to the Petition Date.

          130.     "TCO" means Columbia Gas Transmission Corporation, a
Delaware corporation, the debtor and debtor in possession in the Reorganization
Case.

          131.     "TCO COMMITTEES" means, collectively, the Creditors'
Committee and the Customers' Committee.

          132.     "TCO OBLIGATION" has the meaning set forth in Section V.F.

          133.     "TRUST FUND DECISION" means the decision of the United
States Court of Appeals for the Third Circuit styled The Official Committee of
Unsecured Creditors of the Columbia Gas Transmission Corporation v. The
Columbia Gas System, Inc., Columbia Gas Transmission Corporation, et al., 997
F.2d 1039 (3d Cir. 1993), with respect to the payment by TCO of certain refunds
to certain of its Customers and payments by TCO to GRI.





                                     - 26 -
<PAGE>   449

          134.     "UNCLAIMED DISTRIBUTION" has the meaning set forth in Section
IV.D.2.

          135.     "UNSECURED CLAIM" means a Claim that is not a Secured Claim,
an unclassified Claim described in Section II.B or a Claim in Class 4.

          136.     "U.S. TRUSTEE" means the Office of the United States Trustee.

          137.     "U.S. TRUSTEE'S FEE CLAIMS" means the Claims described in
                   Section II.B.1.d.

          138.     "VOTING DEADLINE" means the deadline for voting to accept or
reject the Plan established by order of the Bankruptcy Court.

          139.     "WACOG" means the weighted average cost of gas purchased by
TCO for resale to its Customers.

          140.     "WAIVER AGREEMENT" means an agreement, in the form annexed
hereto as Exhibit C, pursuant to which a Customer or GRI agrees to accept the
treatment provided for in the Plan for Accepting 3.2 Claimants and in
consideration of such treatment agrees (i) to the full settlement,
satisfaction, discharge and termination of all of its Refund Claims and Refund
Disputes and to accept the treatment provided in the Customer Settlement
Proposal for all of its Refund Claims and Refund Disputes, (ii) to the
withdrawal, with prejudice, of the Customers' Committee's complaint and
intervention in and its participation in any appeal or other proceeding in
connection with the Intercompany Claims Litigation, as well as the release of
such Accepting 3.2





                                     - 27 -
<PAGE>   450

Claimant's rights or interests in any judgment or other recovery on account of
the Intercompany Claims, (iii) to the withdrawal, with prejudice, of any appeal
of the Bankruptcy Court's denial of approval of the 1990 Rate Case Settlement
and (iv) not to oppose recovery by Reorganized TCO from Customers of certain
sums, as more fully described in Exhibit C.

B.        RULES OF INTERPRETATION

          For purposes of the Plan:  (i) whenever from the context it is
appropriate, each term, whether stated in the singular or the plural, shall
include both the singular and the plural; (ii) any reference in the Plan to a
contract, instrument, release, indenture or other agreement or document being
in a particular form or on particular terms and conditions means that such
document shall be substantially in such form or substantially on such terms and
conditions; (iii) any reference in the Plan to a document or exhibit Filed or
to be Filed means such document or exhibit, as it may have been or may be
amended, modified or supplemented; (iv) unless otherwise specified, all
references in the Plan to sections, articles and exhibits are references to
sections, articles, schedules and exhibits of or to the Plan; (v) the words
"herein" and "hereto" refer to the Plan in its entirety rather than a
particular portion of the Plan; (vi) captions and headings to articles and
sections are inserted for convenience of reference only and are not intended to
be a part of or to affect the interpretation of the Plan; and (vii) the rules
of





                                     - 28 -
<PAGE>   451

construction set forth in section 102 of the Bankruptcy Code shall apply.

C.        COMPUTATION OF TIME

          In computing any period of time prescribed or allowed by the Plan,
the provisions of Bankruptcy Rule 9006(a) shall apply.

D.        GOVERNING LAW

          EXCEPT TO THE EXTENT THAT THE BANKRUPTCY CODE OR BANKRUPTCY RULES ARE
APPLICABLE, AND SUBJECT TO THE PROVISIONS OF ANY CONTRACT, INSTRUMENT, RELEASE,
INDENTURE OR OTHER AGREEMENT OR DOCUMENT ENTERED INTO IN CONNECTION WITH THE
PLAN, AND THE APPLICABILITY OF FEDERAL LAWS AS TO MATTERS WHICH ARE SUBJECT TO
FERC'S JURISDICTION, THE RIGHTS AND OBLIGATIONS ARISING UNDER THE PLAN SHALL BE
GOVERNED BY, AND CONSTRUED AND ENFORCED IN ACCORDANCE WITH, THE LAWS OF THE
STATE OF DELAWARE, WITHOUT GIVING EFFECT TO CONFLICTS-OF-LAW PRINCIPLES WHICH
WOULD APPLY THE LAWS OF A JURISDICTION OTHER THAN THE STATE OF DELAWARE OR THE
UNITED STATES OF AMERICA.

II.       UNCLASSIFIED CLAIMS AND
          CLASSES OF CLAIMS AND INTERESTS

A.        GENERAL

          Administrative Claims, Priority Tax Claims and the East Lynn
Condemnation Obligation, as described below in Section II.B.(3), have not been
classified and the holders thereof are not entitled to vote on the Plan.

          To the extent that a proof of Claim asserts more than one Claim, each
such Claim shall be treated as a separate Claim under





                                     - 29 -
<PAGE>   452

the Plan, and where such Claims may be classified in different Classes, such
Claims shall be deemed for purposes of this Plan to be distinct Claims entitled
to be voted in their respective Classes subject, however, to the following
condition.  If any Creditor holds more than one Claim in any Class, all of the
Claims held on the Petition Date by that Creditor in that Class shall be
aggregated and the Creditor's aggregate Claim shall be accorded the treatment
appropriate for a Claim of such type and amount.

          A Claim is classified in a particular Class only to the extent that
the Claim qualifies within the description of that Class and is classified in
one or more other Classes to the extent that any remainder of the Claim
qualifies within the description of such other Class or Classes.  A Claim is
also classified in a particular Class for the purpose of receiving
distributions pursuant to the Plan only to the extent that such Claim is an
Allowed Claim in that Class and has not been paid, released or otherwise
satisfied.

B.        UNCLASSIFIED CLAIMS

          1.       ADMINISTRATIVE CLAIMS

          Administrative Claims consist of those Claims more fully described
below:





                                     - 30 -
<PAGE>   453

                   A.      PROFESSIONAL CLAIMS

          Professional Claims consist of all Administrative Claims for unpaid
fees and expenses of Professionals and amounts for compensation allowed under
sections 330(a) and 503(b) of the Bankruptcy Code.

                   B.      POST-PETITION OPERATIONAL CLAIMS

          Post-Petition Operational Claims consist of all Administrative
Claims, other than Environmental Claims included in Class 4.1, in respect of
liabilities incurred by TCO in the ordinary course of business during the
pendency of the Reorganization Case, including, but not limited to,
Administrative Claims of governmental units for taxes, Refund Claims
attributable to rates and charges for services rendered by TCO after the
Petition Date and FERC-mandated post-petition interest thereon, trade vendor
and supplier payment obligations and obligations under contracts and leases.

                   C.      ASSUMED EXECUTORY CONTRACT CLAIMS

          Assumed Executory Contract Claims consist of all obligations of TCO
to cure defaults arising from or in connection with the assumption of
pre-petition executory contracts and unexpired leases by TCO, under the Plan or
otherwise, pursuant to section 365(b)(1) of the Bankruptcy Code.

                   D.      U.S. TRUSTEE'S FEE CLAIMS

          The U.S. Trustee's Fee Claims consist of the fees TCO is required to
pay pursuant to 28 U.S.C. Section 1930(a)(6).





                                     - 31 -
<PAGE>   454

                   E.      MISCELLANEOUS ADMINISTRATIVE CLAIMS

          Miscellaneous Administrative Claims consist of all  Administrative
Claims other than Professional Claims, Post-Petition Operational Claims,
Assumed Executory Contract Claims, U.S. Trustee's Fee Claims, and
Administrative Recoupment Claims, including, but not limited to, Claims which
are (i) contingent indemnification Claims of officers, directors and employees
of TCO, including indemnification Claims by (a) employees in connection with
pre- and post-petition personal injury and property damage actions brought
against them by third parties and (b) officers and directors in connection with
pre-petition stockholder class actions and other securities law actions, (ii)
post-petition personal injury and property damage Claims and (iii) Claims
arising pursuant to performance bonds issued on behalf of TCO post-petition.

                   F.      ADMINISTRATIVE RECOUPMENT CLAIMS.

          Administrative Recoupment Claims consist of all Recoupment Claims of
Dissenting 3.2 Claimants that are entitled to administrative priority by virtue
of the Stipulation and Order Regarding Motions for an Order Authorizing
Recoupment, or, In the Alternative Directing Payments Into Escrow, dated
October 13, 1993, and the Stipulation and Order Regarding Motion For An Order
Modifying the Automatic Stay to Permit Set-offs of WACOG Surcharges, or, in The
Alternative, Directing Payment Into Escrow, dated October 20, 1993.





                                     - 32 -
<PAGE>   455

          2.       PRIORITY TAX CLAIMS

          Priority Tax Claims consist of all Claims for the payment of taxes
entitled to priority in payment pursuant to section 507(a)(8) of the Bankruptcy
Code.

          3.       EAST LYNN CONDEMNATION OBLIGATION

          The East Lynn Condemnation Obligation consists of TCO's obligation to
turn over the East Lynn Condemnation Award to CNR.

C.        CLASSES OF CLAIMS

          1.       CLASS 1 CLAIMS - SECURED CLAIMS

                   A.      CLASS 1.1 - DIP FACILITY CLAIM

          Class 1.1 consists of the Secured Claim of Chemical Bank as agent
under the DIP Facility.

                   B.      CLASS 1.2 - SECURED PRODUCER CLAIMS

          Class 1.2 consists of all Claims of Producers that supplied gas to
TCO pre-petition to the extent that such Producers assert that such Claims are
secured by statutory liens.

                   C.      CLASS 1.3 - OTHER SECURED CLAIMS

          Class 1.3 consists of all Secured Claims not included in Classes 1.1,
1.2 or 2.1, and includes setoff Claims permitted under section 553 of the
Bankruptcy Code.

          2.       CLASS 2.1 CLAIM - COLUMBIA SECURED CLAIM

          Class 2.1 consists of the Columbia Secured Claim.

          3.       CLASS 3 CLAIMS - UNSECURED CLAIMS

                   A.      CLASS 3.1 - UNSECURED CLAIMS OF $25,000 OR LESS

          Class 3.1 consists of all Unsecured Claims (other than any Customer
Regulatory Claim the holder of which does not execute a





                                     - 33 -
<PAGE>   456

Waiver Agreement prior to the Effective Date) which are Allowed in an amount
that does not exceed $25,000.

                   B.      CLASS 3.2 - UNSECURED CUSTOMER CLAIMS AND GRI CLAIMS

          Class 3.2 consists of all GRI Claims and all Customer Regulatory
Claims not included in Class 3.1.

                   C.      CLASS 3.3 - PRODUCER CLAIMS

          Class 3.3 consists of all Producer Claims not included in Class 3.1
or Class 1.2.

                   D.      CLASS 3.4 - GENERAL UNSECURED CLAIMS

          Class 3.4 consists of all General Unsecured Claims not included in
any other Class.

                   E.      CLASS 3.5 - COLUMBIA UNSECURED CLAIM

          Class 3.5 consists of the Columbia Unsecured Claim.

          4.       CLASS 4 CLAIMS - ASSUMED CLAIMS

                   A.      CLASS 4.1 - ENVIRONMENTAL CLAIMS

          Class 4.1 consists of all pre- and post-petition environmental
compliance and remediation obligations to state and federal environmental
enforcement and regulatory agencies, including, without limitation, those
obligations of TCO arising under the Order Approving Administrative Order on
Consent for Removal Actions and Toxic Substance Control Act and Consent
Agreement between TCO and the United States Environmental Protection Agency
approved by order of the Bankruptcy Court on November 16, 1994 (the "EPA
Order"), that certain Consent Order and Agreement, dated October 6, 1994 by and
between TCO and the Commonwealth of Pennsylvania, Department of Environmental





                                     - 34 -
<PAGE>   457

Resources, approved by order of the Bankruptcy Court dated November 16, 1994
(the "Pennsylvania Environmental Order") and two certain Agreed Orders by and
between TCO and the Commonwealth of Kentucky, Natural Resources and
Environmental Protection Cabinet both dated October 24, 1994 and approved by
order of the Bankruptcy Court dated November 16, 1994 (the "Kentucky
Environmental Orders").  Non-consensual pre-petition environmental penalty
liabilities asserted by entities other than the Commonwealth of Pennsylvania,
the Commonwealth of Kentucky or the United States Environmental Protection
Agency and settled in the above-referenced orders are not included in this
Class.

                   B.      CLASS 4.2 - CERTAIN CONDEMNATION CLAIMS

          Class 4.2 consists of condemnation awards payable pursuant to the
Bankruptcy Court's December 18, 1992 Order Authorizing TCO to Pay Condemnation
Awards Adjudicated Post-Petition Where No Bond Has Been Posted.

                   C.      CLASS 4.3 - PENSION CLAIMS

          Class 4.3 consists of all contingent Claims arising under or related
to Claims Filed by the PBGC in connection with employee or retiree benefit or
pension plans or programs.

                   D.      CLASS 4.4 - SURETY BOND RELATED CLAIMS

          Class 4.4 consists of all contingent Claims arising under or related
to Claims Filed by Columbia in connection with TCO's obligation to reimburse
Columbia for any payments Columbia is or may be required to make on behalf of
TCO under or in connection with surety bonds issued for TCO's benefit.





                                     - 35 -
<PAGE>   458

                   E.      CLASS 4.5 - AFFILIATE TAX CLAIMS

          Class 4.5 consists of all Affiliate Tax Claims remaining after
payment of all Assumed Executory Contract Claims.

D.        CLASS OF INTERESTS

          CLASS 5 INTERESTS - COMMON STOCK OF TCO

          Class 5 consists of Columbia's Interests.

III.      TREATMENT OF CLAIMS AND INTERESTS

A.        TREATMENT OF UNCLASSIFIED CLAIMS

          1.       ADMINISTRATIVE CLAIMS
                    
                   A.      PROFESSIONAL CLAIMS

          Each holder of an Allowed Professional Claim will receive cash equal
to the amount of such Claim and such post-petition interest, if any, allowed by
the Bankruptcy Court (unless TCO and the holder of such Claim agree to other
treatment) on the later of (i) the Effective Date, or (ii) the tenth day after
the date on which an order allowing such Claim becomes a Final Order.

                   B.      POST-PETITION OPERATIONAL CLAIMS

          Each Post-Petition Operational Claim that is unpaid as of the
Effective Date will be assumed and paid by Reorganized TCO pursuant to the
terms and conditions of the particular transaction giving rise to such Claim,
without any further action on the part of the holder of such Claim.

                   C.      ASSUMED EXECUTORY CONTRACTS CLAIMS

          Each Assumed Executory Contract Claim that is or becomes Allowed on
or before the Effective Date will be paid in full in cash on the Effective Date
or upon such earlier or later date as





                                     - 36 -
<PAGE>   459

may be authorized by order of the Bankruptcy Court.  TCO will, subject to the
approval of the Bankruptcy Court, assume the Tax Allocation Agreement.  To the
extent that the Tax Allocation Agreement allocates to TCO the obligation to pay
post-petition interest on amounts included in the Priority Tax Claim or to
reimburse Columbia or any other subsidiary of Columbia for any refunds and
interest accrued on such refunds which Columbia or any other subsidiary of
Columbia would have been entitled to receive under the Tax Allocation Agreement
but were used by TCO to offset the Priority Tax Claims against it, such
post-petition interest will be paid and such reimbursement will be made by TCO
as an Assumed Executory Contract Claim.  Any Assumed Executory Contract Claim
that becomes an Allowed Claim after the Effective Date will be paid in full in
cash on the thirtieth day after the end of the Calendar Quarter in which such
Claim becomes an Allowed Claim or in accordance with such other terms as may be
agreed upon by TCO and the holder of such Claim or as provided by an order of
the Bankruptcy Court.  Payment will be made net of any setoff of moneys owed by
the holder of such Claim to TCO.

                   D.      U.S. TRUSTEE'S FEES

          U.S. Trustee's Fee Claims that are unpaid as of the Effective Date
will be paid in full in cash on the Effective Date.

                   E.      MISCELLANEOUS ADMINISTRATIVE CLAIMS

          Each Miscellaneous Administrative Claim that is unpaid as of the
Effective Date will be assumed and paid by Reorganized TCO





                                     - 37 -
<PAGE>   460

as it becomes due and payable or as otherwise agreed to or directed by the
Bankruptcy Court.

                   F.      ADMINISTRATIVE RECOUPMENT CLAIMS

          Administrative Recoupment Claims will be treated as set forth in the
discussion of the treatment of Class 3.2 in Section III.B.3.c.

          2.       PRIORITY TAX CLAIMS

          Each Priority Tax Claim will be paid, to the extent Allowed, in full,
in cash, on the Effective Date, if then Allowed, or, if not then Allowed, on
the thirtieth day after the date on which it becomes on Allowed Claim, except
that, pursuant to Section 1129(a)(9)(C) of the Bankruptcy Code, the Claims of
the IRS that are the subject of the IRS Order will be paid in installments over
a period not to exceed six years from the date of assessment of such Claims,
together with interest at the rate set forth in Section D.7 of the IRS
Settlement Agreement.  The full amount of such Claims will be paid in cash in
quarterly equal installments, beginning on the date which is three months after
the Effective Date and ending on the last quarterly date which does not exceed
six years from the date of assessment of such Claims, except that the first
quarterly installment shall be paid in three equal monthly installments
beginning on the Effective Date.  Each monthly or quarterly installment shall
be paid together with interest on such installment at the rate set forth in
Section D.7 of the IRS Settlement Agreement accrued to the date of payment.
Notwithstanding the foregoing, however,





                                     - 38 -
<PAGE>   461

Reorganized TCO, with the prior consent of Reorganized Columbia, shall have the
right to pay the Claims of the IRS, or any remaining balance of such Claims, in
full or in part at any time on or after the Effective Date, without premium or
penalty.  Payments on the Priority Tax Claims of the IRS made by Columbia or
Reorganized Columbia shall, pursuant to the IRS Settlement Agreement, reduce
the Priority Tax Claims of the IRS against TCO or Reorganized TCO in accordance
with the terms of the IRS Order.

          3.       EAST LYNN CONDEMNATION OBLIGATION

          On the Effective Date, the East Lynn Condemnation Award will be
delivered to CNR.

B.        TREATMENT OF CLASSIFIED CLAIMS

          1.       CLASS 1 CLAIMS - SECURED CLAIMS

                   A.      CLASS 1.1 - DIP FACILITY CLAIM

          The Class 1.1 Claim will be paid in full on the Effective Date, if
then Allowed, or if not then Allowed, then on or before the tenth day after
such Claim becomes an Allowed Claim.  On the Effective Date, the DIP Facility
will terminate by its terms.  Any Deficiency Claim will be treated as an
Administrative Claim in accordance with Section 364(c) of the Bankruptcy Code.
The Class 1.1 Claim is unimpaired.

                   B.      CLASS 1.2 - SECURED PRODUCER CLAIMS

          On the Effective Date, TCO shall pay to each holder of a Class 1.2
Claim that is then Allowed, cash in an amount equal to the lesser of (i) the
Allowed amount of such Claim and (ii) the value of such holder's collateral as
determined by the Bankruptcy





                                     - 39 -
<PAGE>   462

Court.  Any Class 1.2 Claim that is not Allowed as of the Effective Date but
that becomes an Allowed Claim after the Effective Date shall be paid in cash in
an amount equal to the lesser of (i) the Allowed amount of such Claim and (ii)
the value of such holder's collateral as determined by the Bankruptcy Court on
the thirtieth day after the end of the Calendar Quarter in which such Claim
becomes an Allowed Claim.  Any Deficiency Claim will be treated as an Unsecured
Claim in the appropriate category of Class 3.

          Class 1.2 Claims are unimpaired.

                   C.      CLASS 1.3 - OTHER SECURED CLAIMS

          On the Effective Date, TCO shall satisfy each Class 1.3 Claim that is
then Allowed by, at TCO's option, (i) paying each holder of such Allowed Claim
cash in an amount equal to the lesser of (x) the Allowed amount of such Claim
and (y) the value of such holder's collateral as determined by the Bankruptcy
Court, (ii) reinstating the maturity of the obligation giving rise to such
Allowed Claim and curing all defaults in connection therewith in accordance
with the provisions of section 1124 of the Bankruptcy Code, or (iii) permitting
setoff of such Allowed Claim against any obligation the holder of such Claim
may have to TCO.  Any Class 1.3 Claim that becomes an Allowed Claim after the
Effective Date will, on the thirtieth day after the end of the Calendar Quarter
in which such Claim becomes an Allowed Claim, receive the treatment described
in the preceding sentence.  Any





                                     - 40 -
<PAGE>   463
Deficiency Claim will be treated as an Unsecured Claim in the appropriate
category of Class 3.

          Class 1.3 Claims are unimpaired.

          2.       CLASS 2.1 - COLUMBIA SECURED CLAIM

          The Columbia Secured Claim shall be Allowed as Filed, provided that
all other distributions which, under the Plan, are required to be made to
Creditors on the Effective Date are in fact made as provided for.

          On the Effective Date, Columbia shall receive in respect of the
Columbia Secured Claim, newly issued debt securities of Reorganized TCO (which
will be secured by substantially all of the assets of Reorganized TCO) having a
principal amount calculated to provide Reorganized TCO with an appropriate
funded debt-to-equity ratio as of the Effective Date, and the right to retain
the presently outstanding common stock of Reorganized TCO, with the remainder
of the Columbia Secured Claim to be contributed to the capital of Reorganized
TCO.  The terms of such debt securities will be as jointly proposed by TCO and
Columbia, subject to approval by the SEC and the Bankruptcy Court, on or before
the Effective Date.

          The Class 2.1 Claim is impaired.

          3.       CLASS 3 CLAIMS - UNSECURED CLAIMS

                   A.      SETTLEMENT VALUES AND ALLOWANCE AMOUNTS

          A dollar amount (a "Settlement Value") has been proposed under the
Plan for each Producer Claim.  The Settlement Values have been determined as
set forth below:





                                     - 41 -
<PAGE>   464
               (i)  The Settlement Value proposed for each Producer Claim which
          is an Allowed Claim as of the Plan Mailing Date is the Allowed amount
          of the Claim as of that date and accordingly is deemed accepted by
          the holder thereof without any further action on its part.

              (ii)  The Settlement Value proposed for each Producer Claim which
          is not an Allowed Claim on the Plan Mailing Date is an amount which
          TCO, in light of all the relevant facts, believes constitutes a fair
          and equitable compromise at which it believes that the Claim should
          be Allowed.

             (iii)  In the case of the Initial Accepting Producers, the
          Settlement Values proposed have been individually negotiated with
          those Producers, taking into account all known factors likely to
          affect the ultimate allowance of such Claims.

          TCO shall have the right, prior to the [Plan Mailing Date], with the
consent of the Creditors' Committee, to decrease, or after consultation with
the Creditors' Committee, to increase the Original Settlement Values offered to
Producers (other than Initial Accepting Producers) which are set forth on
Schedule I.

          Each Producer that accepts the Settlement Value proposed for its
Claim will be deemed to have agreed to an Allowed Claim in that amount, subject
to Bankruptcy Court approval, in Class 3.1 or Class 3.3, as appropriate.  A
Producer who accepts the proposed Settlement Value for its Claim will be deemed
to have waived and released any right of setoff, any lien, or any other Claim
against TCO or TCO's property, and TCO shall be deemed to have released all
rights of setoff or Avoidance Claims which TCO may have against such Producer
or its property, subject to Bankruptcy Court approval of such Producer's
Settlement Value, on the Effective Date.





                                     - 42 -
<PAGE>   465
          If a holder of a Producer Claim accepts its Settlement Value, but its
Settlement Value is not approved by the Bankruptcy Court, such holder shall be
treated as a Rejecting Producer in Class 3.3 unless TCO and such Producer agree
on a modified Settlement Value that is approved by the Bankruptcy Court.  If a
holder of a Producer Claim that TCO proposes be in Class 3.1 does not accept
its proposed Settlement Value, such Claim will be a Class 3.1 Claim to the
extent that such Claim is Allowed in an amount of $25,000 or less and otherwise
will be a Class 3.3 Claim or Class 1.2 Claim.  Any holder of a Producer Claim
that does not accept its Settlement Value will have the Allowance of its Claim
determined by litigation before the Claims Mediator or the Bankruptcy Court, as
appropriate, or by a settlement approved by the Bankruptcy Court.

          Additionally, a dollar amount (an "Allowance Amount") has been
proposed under the Plan for each General Unsecured Claim that is not an Allowed
Claim as of the Plan Mailing Date.  The Allowance Amounts are set forth on
Schedule II.  The Allowance Amounts proposed for each such General Unsecured
Claim is the amount at which TCO, in light of all the relevant facts known to
it, believes and consents that the Claim should be Allowed.

          Each holder of an unliquidated General Unsecured Claim that accepts
the Allowance Amount proposed for its Claim shall have an Allowed Claim in that
amount, subject to Bankruptcy Court approval, in Class 3.1 or Class 3.4, as
appropriate.  A holder of a General Unsecured Claim who accepts its Allowance
Amount for





                                     - 43 -
<PAGE>   466
Its Claim will be deemed to have waived and released any right of setoff, any
lien, or any other Claim against TCO or TCO's property, and TCO shall be deemed
to have released all rights of setoff or Avoidance Claims which TCO may have
against such holder or its property, subject to Bankruptcy Court approval of
such holder's Allowance Amount, on the Effective Date.  If the holder of an
unliquidated General Unsecured Claim that TCO proposes be in Class 3.1 does not
accept its Allowance Amount, such Claim will be a Class 3.1 Claim to the extent
that such Claim is Allowed in an amount of $25,000 or less and otherwise will
be a Class 3.4 Claim.  Any holder of an unliquidated General Unsecured Claim
that does not accept its Allowance Amount will have the Allowance of its Claim
determined by litigation before the Bankruptcy Court or by a settlement
approved by the Bankruptcy Court.

          If the Plan is not consummated, any voluntary reduction in a Claim
made by a Claimholder by acceptance of a Settlement Value, or an Allowance
Amount, or otherwise, in order to receive the treatment provided for Class 3.1,
Class 3.3 or Class 3.4, as applicable, may be nullified at the option of the
Claimholder by written notice to TCO in accordance with such procedures as
shall be determined by the Bankruptcy Court.

                   B.      CLASS 3.1 - UNSECURED CLAIMS OF $25,000 OR LESS

          TCO shall pay to each holder of a Class 3.1 Claim cash in an amount
equal to one hundred (100%) percent of the Allowed amount of such Claim, on the
Effective Date, if the Claim is then





                                     - 44 -
<PAGE>   467
Allowed, or, if not then Allowed, then on the thirtieth day after the end of
the Calendar Quarter during which such Claim becomes an Allowed Claim.  The
foregoing is subject, in the case of any Customer Regulatory Claim of a
Customer, to the provisions of the fourth paragraph of Section III.B.3.c. with
respect to the method of payment of such Claims other than in cash, including,
but not limited to, distributions in the form of a credit to a rate mechanism.

          Class 3.1 Claims are unimpaired.

          C.       CLASS 3.2 - UNSECURED CUSTOMER CLAIMS AND GRI CLAIMS

                   If Class 3.2 votes to accept the Plan, and if there is a
Final FERC Order approving the Customer Settlement Proposal, each Accepting 3.2
Claimant shall have an Allowed Refund Claim in an amount equal to the amount
set forth for such Claimholder on the schedules attached to the Customer
Settlement Proposal and shall receive on the Effective Date, (i) that to which
such Claimholder is entitled under the Trust Fund Decision and any Final Orders
made in furtherance or implementation thereof, including, without limitation,
any Final Orders regarding the allocation of the Lowest Intermediate Balance
Amount, with post- petition interest in accordance with the FERC Interest
Order, (ii) eighty (80%) percent of the pre-petition amount and one hundred
(100%) percent of the post-petition amount due to such Claimant with interest
as provided in the 1990 Rate Case Settlement in full satisfaction of the 1990
Rate Case Claims, (iii) such Claimholder's allocable share of $52.5 million in





                                     - 45 -
<PAGE>   468
settlement of all BG&E Claims, and (iv) an amount equal to eighty (80%) percent
of each Claimant's remaining Customer Regulatory Claim.  In addition, TCO shall
pay, within forty-five days after the Effective Date, a lump-sum payment of
$1.3 million to the current members of the Customers' Committee as of the date
of this Plan, which payment shall be shared pro rata among such Committee
members.  TCO shall also pay, within the same period, $225,000 to UGI
Utilities, Inc. ("UGI"), a former member of the Customers' Committee,
representing one half of the expenses incurred by UGI while serving on the
Customers' Committee.  Such payments to the Customers' Committee and UGI shall
be made solely from post-Effective Date income of Reorganized TCO.

          Each Dissenting 3.2 Claimant will be entitled to pursue its Refund
Disputes by litigation in any appropriate forum and shall receive in respect of
its Allowed Class 3.2 Claim (i) that to which such Claimholder may become
entitled under Final Orders resolving such Claimholder's Recoupment Claim
(including Administrative Recoupment Claims), if any, and (ii) that to which
such Claimholder is entitled under the Trust Fund Decision and any Final Orders
made in furtherance or implementation thereof, including any Final Orders
regarding the allocation of the Lowest Intermediate Balance Amount and/or the
determination of the amount of post- petition interest due, or both; and shall
receive a distribution in cash in an amount equal to the Target Distribution
Percentage of the Allowed amount of its Class 3.2 Claim remaining after
application of any sums paid pursuant to





                                     - 46 -
<PAGE>   469
clauses (i) and (ii) above.  See Section IV.B, "Distributions on Claims."  In
no event shall a Dissenting 3.2 Claimant's Claim be deemed Allowed, and in no
event shall any distribution be made to a Dissenting 3.2 Claimant, until all
Refund Disputes relating to such Dissenting 3.2 Claimant have been resolved by
Final Orders.

          Distributions to each Dissenting 3.2 Claimant shall be made (i) if
recoupment or setoff relating to the Refund Disputes is Allowed by Final Order,
on the thirtieth day after the end of the Calendar Quarter in which such Final
Order is entered and such holder's Claim is Allowed and (ii) with respect to
final resolutions of such Dissenting 3.2 Claimant's other Refund Disputes, as
to which no recoupment or setoff is authorized, on the thirtieth day after the
end of the Calendar Quarter in which all such Refund Disputes are resolved.
See Section IV.B, "Distribution on Claims."

          Distributions to be made to an Accepting Class 3.2 Claimant shall be
made in accordance with the distribution provisions of the Customer Settlement
Proposal.  Distributions to Dissenting 3.2 Claimants shall be distributed in
cash at such time as provided in this Section III.B.3.c, or over such period of
time and in such form as may be appropriate under the Confirmation Order or
relevant FERC orders.  If, at an Accepting Claim 3.2 Claimant's option, as set
forth in the Customer Settlement Proposal, such distribution is made in other
than cash, including, but not limited to, distributions in the form of a credit
to a rate mechanism, Reorganized TCO shall retain the cash





                                     - 47 -
<PAGE>   470
which would otherwise be distributed to such holder under the Plan.

          TCO may, in its discretion, petition the Bankruptcy Court for an
order estimating, for voting and distribution purposes, the Claims of
Dissenting 3.2 Claimants which are the subject of the BG&E Case and any other
Disputed Claims.

          If Class 3.2 rejects the Plan, or if the Plan is not consummated, any
acceptance of the Waiver Agreement may, at the option of the holder of the
Claim, be considered null and void by written notice to TCO.

          Pursuant to the Columbia Customer Guaranty, Columbia shall guaranty
the treatment afforded Accepting Class 3.2 Claimants.

          Class 3.2 Claims are impaired.

                   D.      CLASS 3.3 - PRODUCER CLAIMS

          If all Producers in Class 3.3 accept the Original Settlement Values
proposed for their Claims and such Original Settlement Values are approved by
the Bankruptcy Court, each holder of an Allowed Class 3.3 Claim shall be paid,
in cash, on the Effective Date, an amount equal to the Target Distribution of
its Allowed Claim, together with a Supplemental Interest Payment thereon, if
applicable.  Otherwise, each holder of a Class 3.3 Claim which is Allowed as of
the Effective Date shall be paid, in cash, on the Effective Date, an amount
equal to the Initial Distribution Percentage of its Allowed Claim, together
with a Supplemental Interest Payment thereon, if applicable.





                                     - 48 -
<PAGE>   471
          Rejecting Producers may continue to litigate their Claims under the
Claims Estimation Procedures or before the Bankruptcy Court. Each Rejecting
Producer shall be paid an amount equal to the Initial Distribution Percentage
of its Allowed Claim, together with a Supplemental Interest Payment thereon, if
applicable, on the thirtieth day after the end of the Calendar Quarter during
which such Claim becomes Allowed, provided, however, if on such day, there is
pending an appeal (a) by such  Rejecting Producer from the order Allowing such
Rejecting Producer's Claims, or (b) by Reorganized TCO or any other party from
the order Allowing such Rejecting Producer's Claim and Reorganized TCO or such
other party has obtained a stay pending appeal of such order, such distribution
shall be made on the thirtieth day after the earlier of the termination of the
stay pending appeal or the entry of a Final Order Allowing such Rejecting
Producer's Claim.

          On the thirtieth day after the end of the Calendar Quarter during
which the Final Allowance Date occurs, except as provided in the following
paragraph, Reorganized TCO shall distribute to each holder of an Allowed Class
3.3 Claim (a) if the Actual Target Producer Distribution is less than the
Projected Target Producer Distribution (i) the Target Distribution Percentage
of its Allowed Class 3.3 Claim less any amounts previously paid to such holder,
together with a Supplemental Interest Payment thereon, if applicable, and (ii)
such holder's pro rata share (based on the respective amounts of Allowed Class
3.3 Claims) of





                                     - 49 -
<PAGE>   472
the Additional Distribution, together with a Supplemental Interest Payment
thereon, if applicable, or (b) if the Actual Target Producer Distribution
exceeds the Projected Target Producer Distribution, and if (i)(A) the sum of
(1) the Initial Distribution Percentage of the aggregate of all Allowed Class
3.3 Claims and (2) the aggregate of all Allowed Producer Claims in Class 3.1
and Class 1.2 equals or exceeds (B) one hundred five (105%) percent of the
Projected Target Producer Distribution, no additional distribution; or (ii)(A)
the sum of (1) the Initial Distribution Percentage of the aggregate of all
Allowed Class 3.3 Claims and (2) the aggregate of all Allowed Producer Claims
in Class 3.1 and Class 1.2 is less than (B) one hundred five (105%) percent of
the Projected Target Producer Distribution, the Supplemental Distribution
Percentage of such holder's Allowed Class 3.3 Claim, together with a
Supplemental Interest Payment thereon, if applicable.

          If, prior to the Final Allowance Date, Reorganized TCO determines in
its good faith judgment, in light of the remaining unliquidated Producer
Claims, that the Holdback Amount will exceed the Excess Amount by at least
$25,000,000, Reorganized TCO shall make one interim distribution of such excess
to all holders of Allowed Class 3.3 Claims pro rata (based on the respective
amounts of Allowed Class 3.3 Claims), subject to a maximum distribution for any
such holder equal to the Target Distribution Percentage of such holder's
Allowed Class 3.3 Claim.  If such an interim distribution is made by
Reorganized TCO, the distribution





                                     - 50 -
<PAGE>   473
to be made with respect to each Allowed Class 3.3 Claim relating to the Final
Allowance Date will be adjusted so that the amount of such distribution
together with the amount of the interim distribution made pursuant to this
paragraph equal the amount that would have been distributed with respect to
such Claim under the proceeding paragraph if no interim distribution was made.

          Claims of Rejecting Producers shall be liquidated through litigation
under the Claims Estimation Procedures or before the Bankruptcy Court, as
appropriate, or by a settlement approved by the Bankruptcy Court.

          All distributions to holders of Allowed Class 3.3 Claims shall be
made in cash, except that Reorganized TCO, with the prior consent of Columbia,
shall have the option to pay any amount due to any Rejecting Producer in excess
of the Target Distribution Percentage of the Original Settlement Value proposed
for its Claim, in the form of readily marketable publicly traded securities of
Reorganized Columbia having a fair market value equal to the distribution that
Reorganized TCO has elected not to pay in cash.  The fair market value of such
securities shall be determined based upon the last New York Stock Exchange
trading day prior to the date of distribution to such Rejecting Producer and,
in the case of Columbia common stock, such fair market value shall be deemed to
be the midpoint between the high and the low





                                     - 51 -
<PAGE>   474
price for Columbia common stock as reported on the consolidated tape of the New
York Stock Exchange on such last trading day.

          Class 3.3 Claims are impaired.

                   E.      CLASS 3.4 - GENERAL UNSECURED CLAIMS

          Each holder of an Allowed Class 3.4 Claim shall be paid, on the
Effective Date, if the Claim is then Allowed and, if not then Allowed, on the
thirtieth day after the end of the Calendar Quarter during which such Claim
becomes Allowed, provided, however, if on such day, there is pending an appeal
(a) by such a Claimholder from the order Allowing such Claimholder's Claims, or
(b) by Reorganized TCO or any other party from the order Allowing such
Claimholder's Claim and Reorganized TCO or such other has obtained a stay
pending appeal of such order, such distribution shall be made on the thirtieth
day after the earlier of the termination of the stay pending appeal or the
entry of a Final Order Allowing such Claimholder's Claim, an amount equal to
the Target Distribution Percentage of its Allowed Claim, together with a
Supplemental Interest Payment thereon, if applicable.

          All distributions to holders of Allowed Class 3.4 Claims shall be
made in cash, except that Reorganized TCO, with prior consent of Columbia,
shall have the option to pay any amount due to any holder of a General
Unsecured Claim that does not accept the Allowance Amount proposed for its
Claim, in excess of the Target Distribution Percentage of the Allowance Amount
proposed for its Claim, in the form of readily marketable publicly traded
securities of Reorganized Columbia having a fair market value





                                     - 52 -
<PAGE>   475
equal to the distribution that Reorganized TCO has elected not to pay in cash.
The fair market value of such securities shall be determined based upon the
last New York Stock Exchange trading day prior to the date of distribution to
such Claimholder and, in the case of Columbia common stock, such fair market
value shall be deemed to be the midpoint between the high and the low price for
Columbia common stock as reported on the consolidated tape of the New York
Stock Exchange on such last trading day.

          Class 3.4 Claims are impaired.

                   F.      CLASS 3.5 - THE COLUMBIA UNSECURED CLAIM

          The Columbia Unsecured Claim shall be Allowed as Filed.

          On the Effective Date, Reorganized Columbia shall be paid, in cash,
an amount equal to the Initial Distribution Percentage of its Allowed Claim,
together with a Supplemental Interest Payment thereon, if applicable.  On the
thirtieth day after the end of the Calendar Quarter during which the Final
Allowance Date has occurred, Reorganized Columbia shall be paid, in cash, an
amount equal to the same final distribution percentage of its Allowed Claim as
(a) all holders of Allowed Class 3.3 Claims have received on their Allowed
Claims or (b) all holders of Allowed Class 3.4 Claims have received on their
Allowed Claims, whichever is lower, less any amounts previously received by
Reorganized Columbia in respect of the Columbia Unsecured Claim, together with
a Supplemental Interest Payment thereon, if applicable.

          The Class 3.5 Claim is impaired.





                                     - 53 -
<PAGE>   476
          4.       CLASS 4 CLAIMS - OTHER CLAIMS

                   A.      CLASS 4.1 - ENVIRONMENTAL CLAIMS

          Claims in Class 4.1 shall survive and be unaffected by entry of the
Confirmation Order.  All Class 4.1 Claims shall be assumed by Reorganized TCO
and paid if and when due and payable, either in the course of Reorganized TCO's
business or in accordance with such agreements or stipulations as may be
entered into with the relevant governmental environmental authority, including,
without limitation, the EPA Order, the Pennsylvania Environmental Order and the
Kentucky Environmental Orders.

          Class 4.1 Claims are unimpaired.

                   B.      CLASS 4.2 - CERTAIN CONDEMNATION CLAIMS

          Claims in Class 4.2 shall survive and be unaffected by entry of the
Confirmation Order.  Class 4.2 Claims will be satisfied when and if due in the
ordinary course of Reorganized TCO's business.

          Class 4.2 Claims are unimpaired.

                   C.      CLASS 4.3 - PENSION CLAIMS

          On the Effective Date, Reorganized TCO will assume its obligations
relating to all employee and retiree benefit or pension plans or programs in
existence as of the Petition Date in full satisfaction of any and all Claims in
Class 4.3.

          Class 4.3 Claims are unimpaired.

                   D.      CLASS 4.4 - SURETY BOND RELATED CLAIMS
          Claims in Class 4.4 shall survive and be unaffected by entry of the
Confirmation Order.  Class 4.4 Claims will be





                                     - 54 -
<PAGE>   477
satisfied when and if due in the ordinary course of Reorganized TCO's business.

          Class 4.4 Claims are unimpaired.

                   E.      CLASS 4.5 - AFFILIATE TAX CLAIMS

          Claims in Class 4.5 shall survive and be unaffected by entry of the
Confirmation Order.  Class 4.5 Claims will be satisfied when and if due in the
ordinary course of Reorganized TCO's business.

          Class 4.5 Claims are unimpaired.

C.        TREATMENT OF INTERESTS

          1.       CLASS 5 INTERESTS - COMMON STOCK OF TCO

          Columbia shall receive no distribution in respect of its Interests.

          Class 5 Interests are impaired.

IV.       PROVISIONS GOVERNING DISTRIBUTIONS

A.        TRANSACTIONS ON THE EFFECTIVE DATE

          The following transfers and transactions shall take place on the
Effective Date:

          1.       Columbia shall deliver to Reorganized TCO the cash and
securities, if any, to the extent required by Reorganized TCO to fund the
distributions to be made to Creditors under the Plan, as contemplated by the
Columbia Omnibus Settlement.

          2.       Reorganized TCO shall make the distributions required under
the Plan to be made on the Effective Date to the holders of Allowed Claims.





                                     - 55 -
<PAGE>   478
          3.       Reorganized TCO shall issue and deliver to Columbia new
secured debt securities of Reorganized TCO, as provided in Section III.B.2,
"Class 2.1 Claim - Columbia Secured Claim," in respect of the Class 2.1 Claim.

          4.       If it is not already dissolved, Columbia Transmission
Investment Corporation ("CTIC") shall be dissolved.  Funds in the RIA Account
shall be distributed to Accepting Class 3.2 Claimants in the manner provided in
the Customer Settlement Proposal, and the RIA Account shall be dissolved.  Any
remaining funds held by CTIC shall be distributed to Reorganized TCO.

          5.       The Stipulation of Dismissal with Prejudice of the
Intercompany Claims Litigation which is conditioned only upon the completion of
payment by Reorganized TCO of all distributions payable on the Effective Date
(the "Stipulation of Dismissal with Prejudice") shall have been filed with the
District Court.

B.        DISTRIBUTIONS ON CLAIMS

          Under the Plan, except as otherwise provided, or pursuant to orders
of the Bankruptcy Court, distributions to holders of Claims that are Allowed
Claims as of the Effective Date will be made by Reorganized TCO in cash or
securities on the Effective Date.  Distributions to holders of Claims that are
not Allowed Claims as of the Effective Date will be made by Reorganized TCO in
cash or securities on the thirtieth day after the end of the Calendar Quarter
during which such Claim becomes Allowed.  Under the Plan, distributions to
holders of Classes 3.3 and 3.5 Claims will be made as provided in Section
III.B.3.d, "Class 3.3 -





                                     - 56 -
<PAGE>   479
Producer Claims" and Section III.B.3.f, "Class 3.5 - The Columbia Unsecured
Claim."  Any payment, distribution or other action that is required under the
Plan to be made or taken on the Effective Date, or any other date, shall be
deemed to have been made or taken on the Effective Date or such other date, as
applicable, if made or taken or within ten (10) Business Days and TCO shall use
its best efforts to complete distributions due to be made on the Effective Date
as soon as reasonably possible once such distributions are commenced by
Reorganized TCO.

C.        REORGANIZED TCO AS DISBURSING AGENT

          Reorganized TCO shall make all of the distributions required to be
made in respect of Allowed Claims under the Plan.

D.        DELIVERY OF DISTRIBUTIONS; UNCLAIMED DISTRIBUTIONS

          1.       DELIVERY OF DISTRIBUTIONS IN GENERAL

          Distributions to each holder of an Allowed Claim shall be made (i) at
the address set forth on the proof of Claim Filed by such holder, (ii) at the
address set forth in any written notice of address change delivered to TCO or
Reorganized TCO after the date of Filing of any related proof of Claim or (iii)
at the address of such holder reflected in the Schedule of Liabilities if no
proof of Claim has been Filed and neither TCO nor Reorganized TCO has received
a written notice of a change of address.

          2.       UNCLAIMED DISTRIBUTIONS

          An Unclaimed Distribution shall be any distribution made to the
holder of an Allowed Claim pursuant to the Plan including, in





                                     - 57 -
<PAGE>   480
the case of any check or other instrument, the proceeds thereof, that (i) is
returned to Reorganized TCO, as undeliverable or because delivery thereof is
not accepted, or (ii) in the case of a distribution made in the form of a check
or other instrument, is not negotiated.

          Any Unclaimed Distribution shall, until such time as such Unclaimed
Distribution becomes deliverable, be retained by Reorganized TCO which may
commingle such funds with its other funds; provided, however, that any holder
of an Allowed Claim that does not claim an Unclaimed Distribution within the
later of five (5) years after the entry of the Confirmation Order or two (2)
years after such check or other instrument was issued by Reorganized TCO shall
not participate in any further distributions under the Plan, and shall be
forever barred from asserting any such Claim against Reorganized TCO or its
property.  Any cash held for distribution on account of such holder's Claim and
any accumulated income thereon shall be property of Reorganized TCO, free of
any restrictions thereon.  Nothing contained in the Plan shall require
Reorganized TCO to attempt to locate any holder of an Allowed Claim other than
by reviewing its records.

          Within thirty (30) days after the end of each Calendar Quarter,
Reorganized TCO shall distribute all such previously Unclaimed Distributions
that became deliverable during the preceding Calendar Quarter.





                                     - 58 -
<PAGE>   481
E.        MEANS OF CASH PAYMENTS

          Cash payments made pursuant to the Plan shall be in United States
dollars by check drawn on a domestic bank selected by TCO or Reorganized TCO,
or by wire transfer from a domestic bank, at the option of TCO or Reorganized
TCO; provided, however, that cash payments to (i) Creditors in excess of
$1,000,000 who make a request in writing and provide wire instructions to TCO
at least thirty (30) days in advance of the Effective Date shall be made by
wire transfer by TCO or Reorganized TCO and (ii) foreign creditors, if any, may
be made, at the option of TCO or Reorganized TCO, in such funds and by such
means as are necessary or customary in a particular foreign jurisdiction.

F.        SETOFFS

          Subject, in the case of Accepting Class 3.2 Claimants, to the
applicable provisions of the Customer Settlement Proposal, and as to other
Creditors, the provisions relating to accepted Settlement Values and Allowance
Amounts set forth in Section III.B.3.a. of this Plan, Reorganized TCO may set
off against any Allowed Claim and the distributions to be made pursuant to the
Plan on account of such Claim, the claims, rights and causes of action of any
nature that TCO or Reorganized TCO may hold against the holder of such Allowed
Claim; provided, however, that neither the failure to effect such a setoff nor
the allowance of any Claim hereunder shall constitute a waiver or release by
TCO or Reorganized TCO of any such claim, right or cause of action that TCO or
Reorganized TCO may possess against such holder.





                                     - 59 -
<PAGE>   482
G.        LIMIT ON DISTRIBUTIONS

          Anything to the contrary contained in the Plan notwithstanding, no
holder of a Claim shall receive under the Plan more than the Allowed amount of
such Claim, plus any post-petition interest to which such Claimholder may be
entitled pursuant to the Plan, the Customer Settlement Proposal, or any order
of the Bankruptcy Court.  All payments and distributions to be made under the
Plan shall be made without interest, penalty or late charge arising subsequent
to the Petition Date, except as expressly provided by the Plan.

H.        CONTINUATION OF CERTAIN RETIREMENT, WORKERS' COMPENSATION AND
          LONG-TERM DISABILITY BENEFITS

          Notwithstanding anything to the contrary herein contained, all
employee and retiree benefit plans or programs in existence as of the Petition
Date shall continue after the Effective Date as required by sections
1114(e)(1)(B) and 1114(g) of the Bankruptcy Code.

V.        MEANS FOR IMPLEMENTATION OF THE PLAN

A.        CONTINUED CORPORATE EXISTENCE AND VESTING OF ASSETS IN REORGANIZED
          TCO

          TCO shall continue to exist after the Effective Date as Reorganized
TCO, a Delaware corporation, with all the powers of a corporation under
applicable law and without prejudice to any right to alter or terminate such
existence (whether by merger or otherwise) under Delaware law, subject to the
terms and provisions of this Plan and the Confirmation Order.  Except as
otherwise provided in the Plan, on or after the Effective Date,





                                     - 60 -
<PAGE>   483
all property of the Estate, and any property acquired by TCO or Reorganized TCO
under any provisions of the Plan, shall vest in Reorganized TCO, free and clear
of all Claims, liens, charges and other encumbrances.  On and after the
Effective Date, Reorganized TCO may operate its business and may use, acquire
and dispose of property and compromise or settle any claims against it without
supervision or approval by the Bankruptcy Court and free of any restrictions of
the Bankruptcy Code or Bankruptcy Rules, other than those restrictions
expressly imposed by the Plan and the Confirmation Order.  Without limiting the
foregoing, Reorganized TCO may pay the charges that it incurs on or after the
Effective Date for professional fees, disbursements, expenses or related
support services without application to the Bankruptcy Court.

B.        CORPORATE GOVERNANCE, DIRECTORS AND OFFICERS

          1.       CERTIFICATE OF INCORPORATION AND BY-LAWS

          Upon the Effective Date, the certificate of incorporation and the
by-laws of Reorganized TCO shall be unchanged except that the certificate of
incorporation shall be amended to prohibit the issuance of non-voting equity
securities to the extent required by section 1123(a) of the Bankruptcy Code.
On the Effective Date, Reorganized TCO will file an amended and restated
certificate of incorporation with the Secretary of State of Delaware in
accordance with section 103 of the Delaware General Corporation Law, a copy of
which is annexed hereto as Exhibit "F".





                                     - 61 -
<PAGE>   484
          2.       DIRECTORS AND OFFICERS OF REORGANIZED TCO

          Those persons serving as the directors and officers of TCO as of the
date hereof will, subject to changes in the ordinary course of business,
continue to serve in their same capacities on behalf of Reorganized TCO after
Confirmation.

          3.       CORPORATE ACTION

          Upon the Effective Date, adoption by Reorganized TCO of the amendment
to the certificate of incorporation and the other matters contemplated by or
provided for under the Plan involving the corporate structure of TCO or
Reorganized TCO or corporate action to be taken by or required of either TCO or
Reorganized TCO shall be deemed to have occurred and be effective and all
actions required or contemplated in order to consummate the Plan shall be
authorized and approved in all respects without any requirement of further
action by stockholders or directors of TCO or Reorganized TCO.

C.        PRESERVATION OF RIGHTS OF ACTION

          Except as provided elsewhere in the Plan or in any contract,
instrument, release, indenture or other agreement or document entered into or
created in connection with the Plan, in accordance with section 1123(b) of the
Bankruptcy Code, Reorganized TCO shall retain and may enforce any claims,
rights and causes of action that either TCO or its Estate may hold against any
entity and shall retain the right to prosecute all adversary proceedings
asserting Avoidance Claims that are pending before the Bankruptcy Court as of
the Effective Date.  All other





                                     - 62 -
<PAGE>   485
Avoidance Claims will be released.  Reorganized TCO or its successors may
pursue such retained claims, rights or causes of action, as appropriate, in
accordance with the best interests of Reorganized TCO.  As to Customers who
vote in favor of the Plan or who execute a Waiver Agreement prior to the
Effective Date, all claims, rights and causes of action that either TCO or its
Estate may hold relating to refunds or collections will be settled, released or
preserved as provided in the Customer Settlement Proposal.  TCO expressly
preserves the right to pursue any rights, claims or causes of action, whether
or not the subject of this Plan or the Customer Settlement Proposal, against
Dissenting Customers.

D.        THE CLAIMS ESTIMATION PROCEDURES

          Following the Effective Date, all Disputed Claims subject to the
Claims Estimation Procedures will continue to be subject thereto and each such
Claim will be liquidated in accordance with the Claims Estimation Procedures.
After the Effective Date, Reorganized TCO shall continue to participate in the
Claims Estimation Procedures.

E.        RELEASE OF LIENS

          Except as otherwise provided in the Plan or in any contract,
instrument, release, indenture or other agreement or document created in
connection with the Plan, on the Effective Date, all mortgages, deeds of trust,
liens or other security interests against the property or assets of the Estate
shall be deemed discharged and satisfied, and all the right, title and





                                     - 63 -
<PAGE>   486
interest of any holder of any such mortgage, deed of trust, lien or other
security interest shall revert to Reorganized TCO and its successors and
assigns.  The new debt securities issued by Reorganized TCO in payment of the
Columbia Secured Claim will be secured by the lien on the assets of Reorganized
TCO in favor of Wilmington Trust Company (or any successor thereto) for the
benefit of Columbia.

F.        TCO'S FUNDING OBLIGATIONS

          TCO and Reorganized TCO shall be obligated to fund all distributions
required to be made under the Plan, on the Effective Date or otherwise, to all
holders of Allowed Claims.

G.        COLUMBIA GUARANTY

          Columbia shall guaranty that funding shall be made available to the
extent needed by TCO or Reorganized TCO (in excess of TCO's or Reorganized
TCO's cash available for distribution under the Plan) for the purpose of making
the distributions under the Plan, other than payments in respect of
Post-Petition Operational Claims and Class 4 Claims (the "Columbia Guaranty").
Columbia's provision of the funding required of it pursuant hereto may be in
the form of a direct cash capital investment in TCO, a loan to TCO, or such
other form as may be determined by TCO and Columbia.  Columbia may utilize for
such purposes the distributions made to it and, with their respective consents,
its affiliates under the Plan, including the distributions in respect of the
Columbia Unsecured Claim and the





                                     - 64 -
<PAGE>   487
East Lynn Condemnation Obligation.  The Columbia Guaranty includes the Columbia
Customer Guaranty.

VI.       BAR DATES; PROCEDURES FOR ESTABLISHING ALLOWED CLAIMS
          AND FOR RESOLVING DISPUTED CLAIMS

A.        BAR DATE FOR OBJECTIONS TO CERTAIN NON-ADMINISTRATIVE CLAIMS

          1.       CLAIMS SUBJECT TO THE CLAIMS ESTIMATION PROCEDURES

          All objections by TCO and all other parties-in-interest to Producer
Claims which are the subject of the Claims Estimation Procedures shall be
governed by the provisions of the Claims Estimation Procedures or by other
orders of the Bankruptcy Court relating to such Claims.

          2.       OTHER NON-ADMINISTRATIVE CLAIMS

          Any non-Administrative Claim which was not Filed at least thirty (30)
days prior to the date of the hearing on the Disclosure Statement may be
objected to by TCO or Reorganized TCO, or the TCO Committees by the later of
(i) the Effective Date or (ii) sixty (60) days after a proof of Claim with
respect to such Claim has been Filed.  Any such Claim that has not been
objected to on or prior to such date shall be an Allowed Claim in the
appropriate Class.

B.        BAR DATES FOR CERTAIN ADMINISTRATIVE CLAIMS

          1.       PROFESSIONAL CLAIMS

          Professionals or other entities requesting compensation or
reimbursement of expenses pursuant to sections 327, 328, 330, 331, 503(b) or
1103 of the Bankruptcy Code for services rendered before the Effective Date
(including compensation requested





                                     - 65 -
<PAGE>   488

pursuant to section 503(b)(4) of the Bankruptcy Code by any Professional or
other entity for making a "substantial contribution" in the Reorganization
Case) shall File and serve on Reorganized TCO, the U.S. Trustee, and the Fee
Examiner an application for final allowance of compensation and reimbursement
of expenses no later than thirty (30) days after the Effective Date; provided,
however, that any Professional who may receive compensation or reimbursement of
expenses pursuant to the Administrative Fee Order or other such order of the
Bankruptcy Court may continue to receive such compensation and reimbursement of
expenses for services rendered before the Effective Date.  Objections to
applications of Professionals or other entities for compensation or
reimbursement of expenses must be Filed and served on Reorganized TCO, the U.S.
Trustee, the Fee Examiner, and the requesting party no later than sixty (60)
days after the Effective Date.

          2.       BAR DATE FOR ADMINISTRATIVE CLAIMS ARISING FROM REJECTION OF
                   EXECUTORY CONTRACTS OR UNEXPIRED LEASES

          Bar dates for Administrative Claims arising from the rejection of
executory contracts or unexpired leases shall be established as set forth in
Section VII.C.

C.        AUTHORITY TO PROSECUTE OBJECTIONS

          Subject to the Bar Dates and other limitations set forth in this
Section VI and in Section VII.C, after the Effective Date, only Reorganized TCO
shall have the authority to File objections, and shall have authority to settle,
compromise, withdraw or





                                     - 66 -
<PAGE>   489

litigate to judgment objections to Claims Filed by it, subject to the approval
of the Bankruptcy Court.  Reorganized TCO shall File all such objections to
Claims (other than Producer Claims) within one hundred twenty (120) days after
the Effective Date.

VII.      TREATMENT OF EXECUTORY CONTRACTS AND
          UNEXPIRED LEASES; ADDITIONAL BAR DATES

A.        GENERAL

          Except as otherwise provided in the Plan or in any contract,
instrument, release, indenture, or other agreement or document entered into in
connection with the Plan, on the Effective Date, (i) all of TCO's executory
contracts which have not been expressly assumed or rejected by order of the
Bankruptcy Court as of the Confirmation Date and which are listed on Exhibit 3
attached to the Disclosure Statement shall be assumed or rejected or otherwise
dealt with as set forth on said Exhibit 3 and (ii) all other executory
contracts that have not been so expressly assumed shall be rejected.  Executory
Contracts between TCO and its Customers will receive the treatment provided for
in Article XII of the Customer Settlement Proposal.

B.        PAYMENTS RELATED TO ASSUMPTION OF EXECUTORY CONTRACTS AND UNEXPIRED
          LEASES

          Any monetary amounts by which any executory contract or unexpired
lease to be assumed pursuant to the Plan is in default will be satisfied,
pursuant to section 1123(a)(5)(G) of the Bankruptcy Code, by payment of the
defaulted amount in cash on the Effective Date, or on such other terms as are
agreed to by TCO and the parties to such executory contract or unexpired





                                     - 67 -
<PAGE>   490

lease.  In the event of a dispute regarding (i) the amount of any cure
payments, (ii) the ability of Reorganized TCO to provide "adequate assurance of
future performance" (within the meaning of section 365 of the Bankruptcy Code)
under the contract or lease to be assumed or (iii) any other matter pertaining
to assumption, the cure payments required by section 1123(a)(5)(G) of the
Bankruptcy Code will be made following the entry of a Final Order resolving the
dispute and approving the assumption.

C.        BAR DATE FOR REJECTION DAMAGES

          If the rejection of an executory contract or unexpired lease pursuant
to the Plan or the Confirmation Order gives rise to an Unsecured Claim or
Administrative Claim by the other party or parties to such contract or lease,
such Claim will be forever barred and will not be enforceable against TCO,
Reorganized TCO or its successors, or the properties of any of them, unless,
with respect to an Administrative Claim, a request for payment, or, with
respect to any other Claim, a proof of Claim, is Filed and served on
Reorganized TCO within the later of (i) the time period established by the
Bankruptcy Court in its Final Order authorizing such rejection or (ii)
thirtieth day after the Effective Date.  Objections to any request for payment
or proof of Claim shall be Filed not later than sixtieth day after the
Effective Date.





                                     - 68 -
<PAGE>   491

D.        EXECUTORY CONTRACTS AND UNEXPIRED LEASES ENTERED INTO AND OTHER
          OBLIGATIONS INCURRED AFTER THE PETITION DATE

          Executory contracts and unexpired leases entered into and other
obligations incurred by TCO after the Petition Date (unless an order of the
Bankruptcy Court has been entered authorizing rejection of such contracts or
leases) shall survive and remain unaffected by the Plan or entry of the
Confirmation Order.


VIII.     CONDITIONS PRECEDENT TO CONFIRMATION
          AND CONSUMMATION OF THE PLAN

A.        CONDITIONS TO CONFIRMATION

          The Bankruptcy Court shall not enter the Confirmation Order unless
and until each of the following conditions has been satisfied or, to the extent
permitted, duly waived by TCO, with the prior consent of Columbia, pursuant to
Section VIII.C:

          1.       The Bankruptcy Court has entered an order, pursuant to
section 1129 of the Bankruptcy Code, confirming a Plan of Reorganization for
Columbia which provides for Columbia to fulfill the terms of the Columbia
Omnibus Settlement and the Columbia Guaranty and for the financing of
Reorganized TCO on terms reasonably satisfactory to Columbia and TCO.

          2.       Any authorization or approval required under the Public
Utility Holding Company Act of 1935 with respect to Columbia or Reorganized TCO
of the transactions contemplated by the Plan or by the Plan of Reorganization
for Columbia has been obtained.

          3.       There shall have been no material adverse change to TCO's or
Columbia's business, properties, financial condition,





                                     - 69 -
<PAGE>   492

results of operations or business prospects between the Plan Mailing Date and
the Confirmation Date.

          4.       No material environmental liability Claim shall have been
Filed by any entity including, without limitation, any state or federal
environmental or regulatory agency, asserting actual or potential liability
against TCO, other than Claims Filed pursuant to consensual settlement
agreements between TCO and such state or federal environmental or regulatory
agency or other governmental entity.

          5.       TCO and Columbia shall have received a ruling from the IRS,
in form and substance satisfactory to TCO and Columbia, to the effect that
payments made by TCO under the Plan that are attributable to the breach,
termination or rejection of gas purchase contracts are deductible when paid by
TCO for Federal income tax purposes.

          6.       The Bankruptcy Court shall have entered an order which
approves the settlement, in accordance with the Plan, of the Refund Disputes
with Accepting 3.2 Claimants, and the 1990 Rate Case Settlement (as amended by
the Customer Settlement Proposal), and approves the Customer Settlement
Proposal and TCO's implementation thereof and the Bankruptcy Court's order
shall not have been vacated, reversed or stayed.  FERC shall have entered a
Final FERC Order approving the Customer Settlement Proposal.

          7.       The Bankruptcy Court shall have entered an order approving
the Initial Accepting Producers Settlement and such order shall not have been
vacated, reversed or stayed and the





                                     - 70 -
<PAGE>   493

Initial Accepting Producers Settlement shall not have been terminated pursuant
to Paragraph 14 thereof.

          8.       The Plan shall not have been amended, modified, waived,
supplemented or withdrawn, in whole or in part, without the prior consent of
Columbia, and without the prior consent of (i) the Creditors' Committee, if such
revisions would (a) change the Original Settlement Values set forth on Schedule
I, (b) change the amount, timing or composition of distributions to Classes 3.1,
3.3 or 3.4, (c) change the conditions to Confirmation or to the Effective Date
or (d) otherwise materially affect the treatment of Unsecured Creditors, other
than Customers, under the Plan, or (ii) the Customers' Committee, if such
revisions would (a) change the amount, timing or composition of distributions to
Class 3.2, (b) change the conditions to Confirmation or to the Effective Date,
or (c) otherwise materially affect the treatment of Accepting Class 3.2
Claimants under the Plan.

          9.       The Accepting Producer Percentage shall be not less than
ninety (90%) percent.

B.        CONDITIONS TO EFFECTIVE DATE

          The Plan shall not be consummated and the Effective Date shall not
occur unless and until each of the following conditions has been satisfied or,
to the extent permitted, duly waived by TCO with the prior consent of Columbia
pursuant to Section VIII.C:





                                     - 71 -
<PAGE>   494

          1.       The order of the Bankruptcy Court confirming Columbia's Plan
of Reorganization shall not have been vacated, reversed or stayed, and
Columbia's Plan of Reorganization shall have become effective on terms
consistent with the Plan.

          2.       The Confirmation Order shall not have been vacated, reversed
or stayed.

          3.       There shall have been no material adverse change to TCO's or
Columbia's business, properties, financial condition, results of operations or
business prospects between the Confirmation Date and the Effective Date.

          4.       The Effective Date shall have occurred on or before June 28,
1996, provided, however, that if the Effective Date has not occurred, unless
TCO, with Columbia's prior consent, the Initial Accepting Producers, the
Creditors' Committee or the Customers' Committee elect to notify all other
parties referenced in this paragraph of their intent to terminate the Plan, the
Plan shall become effective on such later date as all other conditions to the
Effective Date have been satisfied or waived.

          5.       The Stipulation of Dismissal with Prejudice of the
Intercompany Claims Litigation shall have been filed with the District Court.

          6.       Each of the conditions to Confirmation that was made a
condition to the Effective Date has been satisfied.





                                     - 72 -
<PAGE>   495

C.        WAIVER OF CONDITIONS TO CONFIRMATION OR EFFECTIVE DATE

          Each of the conditions set forth in Sections VIII.A and VIII.B may,
with the prior consent of Columbia, be waived in whole or in part by TCO at any
time in its discretion except that (i) the condition numbered 2 in Section
VIII.A may be waived only if TCO and Columbia elect to have such condition
become a condition to the Effective Date and may not be waived as a condition
to the Effective Date, (ii) the conditions numbered 4, 5 and 9 in Section
VIII.A may be waived only if TCO and Columbia elect to have such conditions
become conditions to the Effective Date provided that conditions numbered 5 and
9 may not be waived as a condition to the Effective Date without the Official
Committee of Equity Holders appointed in Columbia's reorganization case having
been given notice and an opportunity to be heard, (iii) the condition numbered
9 in Section VIII.A may be waived only with the prior consent of the Initial
Accepting Producers, and (iv) the condition numbered 6 in Section VIII.A. may
be waived only with the prior consent of the Sponsoring Parties (as defined in
the Customer Settlement Proposal).  If the condition numbered 5 in Section
VIII.A. has not been satisfied by December 15, 1995, then Columbia and TCO
shall, by December 31, 1995, (a) either waive the receipt of such ruling as a
condition to Confirmation or the Effective Date, as appropriate or (b) all
settlements of Producers' Claims shall be null and void.

          To be effective, any such waiver and consent must be in writing and
Filed and served upon each of the appropriate





                                     - 73 -
<PAGE>   496

parties.  The failure of a condition to have been satisfied may be asserted by
TCO or Columbia, as the case may be, regardless of the circumstances giving
rise to the failure of such condition to be satisfied (including any action or
inaction by TCO or Columbia).  The failure by TCO, or Columbia, as the case may
be, to exercise any of the foregoing rights shall not be deemed a waiver of any
other rights and each such right shall be deemed an ongoing right, which may be
asserted at any time.

D.        EFFECT OF VACATING CONFIRMATION ORDER

If the Confirmation Order is vacated, whether prior to or subsequent to the
Effective Date, the Plan, including the discharge of Claims pursuant to section
1141 of the Bankruptcy Code, and the assumptions or rejections of executory
contracts or unexpired leases pursuant to Section VII.A, unless modified,
supplemented or amended in accordance with the provisions of Chapter 11 of the
Bankruptcy Code so that the Confirmation Order is reinstated or a new
Confirmation Order is entered, shall be null and void in all respects.  In the
event the Confirmation Order is so vacated, nothing contained in the Plan shall
(i) constitute a waiver or release of any Claim by or against, or any Interests
in, TCO or Columbia, (ii) prejudice in any manner the rights of TCO, Columbia
or any of the Creditors, or (iii) constitute an admission against TCO, Columbia
or any of the Creditors.





                                     - 74 -
<PAGE>   497

IX.       CONFIRMABILITY AND SEVERABILITY
          OF THE PLAN AND CRAMDOWN

A.        CONFIRMABILITY AND SEVERABILITY OF THE PLAN

          TCO and the Plan must satisfy the confirmation requirements of
section 1129 of the Bankruptcy Code.  TCO and Columbia reserve the right to
modify, supplement, revoke or withdraw the Plan pursuant to Sections XII.B or
XII.C.  However, TCO and Columbia may not modify the Customer Settlement
Proposal or the Initial Accepting Producers Settlement Agreement.  A
determination by the Bankruptcy Court that the Plan is not confirmable pursuant
to section 1129 of the Bankruptcy Code shall not limit or affect TCO's ability,
subject to the provisions and limitations contained herein, to modify the Plan
to satisfy the confirmation requirements of said section 1129.

B.        CRAMDOWN

          TCO reserves the right to seek confirmation of the Plan if any
impaired Class does not accept the Plan pursuant to section 1126 of the
Bankruptcy Code.

X.        DISCHARGE, RELEASES, SETTLEMENT OF CLAIMS AND INJUNCTION

A.        DISCHARGE OF CLAIMS AND TERMINATION OF INTERESTS

          Except as otherwise expressly provided in the Plan or in the
Confirmation Order, the discharge, pursuant to section 1141(d) of the
Bankruptcy Code, of all debts of, Claims against and Interests in TCO including
any interest accrued on Claims from the Petition Date, that arose prior to the
Confirmation Date, is effective as of the Effective Date, so long as the
distributions to Creditors which are payable under the Plan on





                                     - 75 -
<PAGE>   498

the Effective Date are made as of the Effective Date as provided in this Plan.
Notwithstanding the foregoing, TCO shall not be discharged from Claims of
Accepting Class 3.2 Claimants arising prior to the Confirmation Date to the
extent those Claims survive as a result of provisions of the Customer
Settlement Proposal.  Without limiting the generality of the foregoing, on the
Effective Date, except as otherwise specifically provided in the Plan or
Confirmation Order, TCO shall be discharged from any debt that arose prior to
the Confirmation Date and from all debts of the kind specified in sections
502(g), 502(h) or 502(i) of the Bankruptcy Code, whether or not (i) a proof of
Claim based on such debt was Filed pursuant to section 501 of the Bankruptcy
Code, (ii) a Claim based on such debt is an Allowed Claim pursuant to section
502 of the Bankruptcy Code or (iii) the holder of a Claim based on such debt
has voted to accept the Plan.

          As of the Confirmation Date, except as otherwise specifically
provided in the Plan or Confirmation Order, all entities, including any third
party claiming rights under any contract between TCO and any Creditor, shall be
precluded from asserting against TCO, Reorganized TCO, or the properties of any
of them, any other or further Claims, debts, rights, causes of action,
liabilities or equity interests based upon any act, omission, transaction or
other activity of any kind or nature that occurred prior to the Confirmation
Date, provided, however, that the Customers' Committee expressly reserves its
right to





                                     - 76 -
<PAGE>   499

pursue a Motion to Unseal Judicial Records filed in the Intercompany Claims
Litigation which is presently sub judice.  The scope of the discharge of Claims
of Accepting Class 3.2 Claimants against TCO is to be determined in accordance
with the Customer Settlement Proposal, which describes Claims which are being
settled and released, and Claims which are preserved by TCO, Reorganized TCO
and the Accepting Class 3.2 Claimants, and which shall survive after the
Effective Date.  Any conflict between the terms of the Customer Settlement
Proposal and the Plan as to issues addressed by the Customer Settlement
Proposal shall be resolved in favor of the Customer Settlement Proposal.

          In accordance with the foregoing, except as specifically provided in
the Plan or Confirmation Order, the Confirmation Order shall be a judicial
determination of discharge of all such Claims and other debts and liabilities
against TCO, pursuant to sections 524 and 1141 of the Bankruptcy Code, and such
discharge shall void any judgment obtained against TCO at any time, to the
extent that such judgment relates to a discharged Claim.

B.        INJUNCTION

          As of the Confirmation Date, except as provided in the Plan, any
settlement agreement incorporated as part of the Plan or the Confirmation
Order, all entities that have held, currently hold or may hold a Claim or other
debt or liability that is discharged pursuant to the terms of the Plan are
permanently enjoined from taking any of the following actions on account of any
such discharged Claims, debts or liabilities, other than





                                     - 77 -
<PAGE>   500

actions brought to enforce any rights or obligations under the Plan:  (i)
commencing or continuing in any manner any action or other proceeding against
TCO, Reorganized TCO or the property of any of them; (ii) enforcing, attaching,
collecting or recovering in any manner any judgment, award, decree or order
against TCO, Reorganized TCO or their respective properties; (iii) creating,
perfecting or enforcing any lien or encumbrance against TCO, Reorganized TCO,
or their respective properties; (iv) asserting a setoff, right of subrogation
or recoupment of any kind against any debt, liability or obligation due to TCO,
Reorganized TCO, or their respective properties; and (v) commencing or
continuing, in any manner or in any place, any action that does not comply with
or is inconsistent with the provisions of the Plan or the Confirmation Order.

C.        LIMITATION OF LIABILITY

          TCO, Reorganized TCO, Columbia, their affiliates and their respective
directors, officers, employees, agents, representatives and professionals
(acting in such capacity), and the Creditors' Committee and the Customers'
Committee and their respective members and Professionals (acting in such
capacity), the Official Committee of Equity Holders appointed in Columbia's
reorganization case and the Official Committee of Unsecured Creditors appointed
in Columbia's reorganization case and their respective members and
professionals (acting in such capacity), and their respective heirs, executors,
administrators, successors and assigns, shall neither have nor incur any
liability to any





                                     - 78 -
<PAGE>   501

entity for any act taken or omitted to be taken in connection with or related
to the formulation, preparation, dissemination, implementation, confirmation or
consummation of the Plan, the Disclosure Statement or any contract, instrument,
release or other agreement or document created or entered into, or any other
act taken or omitted to be taken in connection with the Plan or the
Reorganization Case, provided, however, that the foregoing provisions of this
Section X.C shall have no effect on the liability of any entity that would
otherwise result from any such act or omission to the extent that such act or
omission is determined in a Final Order to have constituted gross negligence or
willful misconduct.

D.      RELEASES

        Columbia, TCO, Reorganized TCO, CNR, each of their respective
affiliates, each of their respective present and former directors, officers,
employees, agents, attorneys, accountants, bankers, investment bankers and
other representatives, each of their respective successors, executors,
administrators, heirs and assigns, and each official committee appointed in the
Reorganization Case and Columbia's reorganization case and their professionals,
will be released as of that date from (i) the Intercompany Claims and from any
and all Claims arising from or related to the transactions which are the
subject of the Intercompany Claims, and the Confirmation Order will enjoin the
prosecution by any entity, whether directly, derivatively or otherwise, of any
Claim, debt, right, cause of action or





                                     - 79 -
<PAGE>   502

liability which was or could have been asserted in connection with the
Intercompany Claims and (ii) Refund Claims and Refund Disputes and from any and
all claims arising from or related to the transactions that are the subject of
such Refund Claims and Refund Disputes, and the Confirmation Order will enjoin
the prosecution by any entity, whether directly, derivatively or otherwise, of
any claim, debt, right, cause of action or liability which was or could have
been asserted in connection with such Refund Claims and Refund Disputes.

          Acceptance of the Plan shall constitute consent to the settlement of
the Intercompany Claims Litigation.

          As of the Effective Date, and except as provided in the Customer
Settlement Proposal, in consideration of the various settlements and agreements
contained in the Customer Settlement Proposal, which shall be approved by the
Bankruptcy Court pursuant to the Plan, the Refund Claims and Refund Disputes
held by Customers shall be deemed settled, released and discharged.

          The Bankruptcy Court's approval of the Customer Settlement Proposal
shall bind all supporters as defined therein, to the settlement of all
litigation involving Refund Disputes and the Intercompany Claims.  Dissenting
3.2 Claimants may elect to continue to litigate the Refund Disputes.

XI.       RETENTION OF JURISDICTION

          Notwithstanding the entry of the Confirmation Order and the
occurrence of the Effective Date, the Bankruptcy Court shall retain such
jurisdiction over the Reorganization Case after the





                                     - 80 -
<PAGE>   503

Effective Date as is legally permissible, including jurisdiction to:

          1.       Allow, disallow, determine, liquidate, classify, estimate,
or establish the priority or secured or unsecured status of, any Claim,
including the resolution of any request for payment of any Administrative
Claim, and the resolution of any and all objections to the allowance or
priority of Claims (including any Administrative Claim and any Priority Tax
Claim);

          2.       Grant or deny any application for allowance of compensation
or reimbursement of expenses authorized pursuant to the Bankruptcy Code or the
Plan, for periods ending on or before the Effective Date;

          3.       Resolve any matters related to the assumption or rejection
of any executory contract or unexpired lease to which TCO is a party or with
respect to which TCO may be liable and to hear, determine and, if necessary,
Allow any Claim arising therefrom;

          4.       Decide or resolve any matter arising under the Claims
Estimation Procedures;

          5.       Resolve any determinations which may be requested by TCO or
Reorganized TCO of unpaid or potential tax liability or any matters relating
thereto under sections 505 and 1146(d) of the Bankruptcy Code, including tax
liability or such related matters for any taxable year or portion thereof ending
on or before the Effective Date;





                                     - 81 -
<PAGE>   504

          6.       Resolve any matters relating to distributions to holders of
Allowed Claims pursuant to the provisions of the Plan, including the assertion
of set-off rights by or against TCO;

          7.       Decide or resolve any motions, adversary proceedings,
contested or litigated matters and any other matters and grant or deny any
applications that may be pending on the Effective Date, that arise in or relate
to the Reorganization Case or the Plan;

          8.       Enter such orders as may be necessary or appropriate to
implement or consummate the provisions of the Plan and all contracts,
instruments, releases, indentures and other agreements or documents created in
connection with or referenced in the Plan or the Disclosure Statement;

          9.       Resolve any cases, controversies, suits or disputes that may
arise in connection with the consummation, interpretation or enforcement of the
Plan or any entity's obligations under or in connection with the Plan,
including determinations relating to the enforceability of the Columbia
Customer Guaranty, and the Columbia Guaranty and any disputes regarding
compensation for those post-Effective Date services referenced in Section
XII.A. hereof, except that such retention of jurisdiction shall not apply to
any cases, controversies, suits or disputes that may arise in connection with
FERC regulatory matters;

          10.      Modify the Plan before, on or after the Effective Date
pursuant to section 1127 of the Bankruptcy Code or modify the Disclosure
Statement or any contract, instrument, release,





                                     - 82 -
<PAGE>   505

indenture or other agreement or document created in connection with the Plan or
the Disclosure Statement, or remedy any defect or omission or reconcile any
inconsistency in any Bankruptcy Court order, the Plan, the Disclosure Statement
or any contract, instrument, release, indenture or other agreement or document
created in connection with the Plan or the Disclosure Statement, in such manner
as may be necessary or appropriate to consummate the Plan, to the extent
authorized by the Bankruptcy Code;

          11.      Issue injunctions, enter and implement other orders or take
such other actions as may be necessary or appropriate to restrain interference
by any entity with consummation or enforcement of the Plan;

          12.      Enter and implement such orders as are necessary or
appropriate if the Confirmation Order is for any reason modified, stayed,
reversed, revoked or vacated;

          13.      Determine any other matters that may arise in connection
with or relate to the Plan, the Disclosure Statement, the Confirmation Order,
any Claim or any contract, instrument, release, indenture or other agreement or
document created in connection with the Plan or the Disclosure Statement; and

          14.      Enter a final decree closing the Reorganization Case.

XII.      MISCELLANEOUS PROVISIONS

A.        DISSOLUTION OF THE CREDITORS' COMMITTEE AND THE CUSTOMERS' COMMITTEE

          The Creditors' Committee and the Customers' Committee shall continue
in existence until the Effective Date for the principal





                                     - 83 -
<PAGE>   506

purposes of participating in the reconciliation and resolution of Disputed
Claims and in overseeing the implementation of the Plan.  On the Effective Date,
except as provided in the following sentence, the Creditors' Committee and the
Customers' Committee shall dissolve and the members of those Committees as such
shall be released and discharged from all rights and duties arising from or
related to the Reorganization Case.  The Creditors' Committee will continue in
existence after the Effective Date, and the Professionals retained by the
Creditors' Committee may continue to be employed after the Effective Date, to
represent Unsecured Creditors' interests (a) with respect to any appeal taken
from the Confirmation Order or from the order approving the Initial Accepting
Producers Settlement and (b) by reviewing proposed settlements of Unsecured
Claims, other than Customer Regulatory Claims.  The Professionals retained by
the Creditors' Committee and the Customers' Committee and the members thereof
shall not be entitled to compensation or reimbursement of expenses for any
services rendered after the Effective Date, except for (a) services performed by
the Creditors' Committee and the Professionals retained by the Creditors'
Committee after the Effective Date as described in the preceding sentence or (b)
services rendered and expenses incurred in connection with any applications for
allowance of compensation and reimbursement of expenses pending on the Effective
Date or Filed and served after the Effective Date pursuant to Section VI.B.1.
After the





                                     - 84 -
<PAGE>   507

Effective Date, the Creditors' Committee may, in its discretion, dissolve upon
notice to Reorganized TCO.  Upon such dissolution, the members of the
Creditors' Committee shall be released and discharged from all rights and
duties arising from or related to the Reorganization Case.  The Professionals
retained by the Creditors' Committee and the members of such Committee must
submit monthly bills to Reorganized TCO for such services and Reorganized TCO
shall pay all reasonable costs and expenses of such Committee members and all
reasonable fees and expenses of their Professionals.  Any dispute regarding
compensation for such post-Effective Date services shall be determined by the
Bankruptcy Court.

B.        MODIFICATION OF THE PLAN

          Subject to the restrictions on modifications set forth in section
1127 of the Bankruptcy Code, TCO reserves the right to alter, amend, modify or
supplement the Plan (but not the Customer Settlement Proposal or the Initial
Accepting Producers Settlement Agreement) before its substantial consummation;
provided, however, that no alterations, amendments, modifications or
supplements shall be made without the prior consent of Columbia and such other
parties in accordance with Section VIII hereof.

C.        REVOCATION OF THE PLAN

          TCO reserves the right to revoke or withdraw the Plan, with the prior
consent of Columbia, prior to the Confirmation Date.  If TCO revokes or
withdraws the Plan, or if Confirmation does not occur, then the Plan shall be
null and void in all respects, and





                                     - 85 -
<PAGE>   508

nothing contained in the Plan shall:  (i) constitute a waiver or release of any
Claims by or against, or any Interests in, TCO or Columbia, (ii) prejudice in
any manner the rights of TCO or Columbia or (iii) constitute an admission
against TCO or Columbia.

D.        SEVERABILITY OF PLAN PROVISIONS

          If any term or provision of the Plan (excluding the Customer
Settlement Proposal and the Initial Accepting Producers Settlement Agreement)
is held by the Bankruptcy Court prior to or at the time of Confirmation to be
invalid, void or unenforceable, the Bankruptcy Court shall have the power to
alter and interpret such term or provision to make it valid or enforceable to
the maximum extent practicable, consistent with the original purpose of the
term or provision held to be invalid, void or unenforceable, and such term or
provision shall then be applicable as so altered or interpreted.  In the event
of any such holding, alteration, or interpretation, the remainder of the terms
and provisions of the Plan may, at TCO's option, with the prior consent of
Columbia, remain in full force and effect and not be deemed affected, impaired
or invalidated by such holding, alteration or interpretation.  However, TCO and
Columbia jointly and severally reserve the right not to proceed to Confirmation
or consummation of the Plan if any such ruling occurs.  The Confirmation Order
shall constitute a judicial determination and shall provide that each term and
provision of the Plan, as it may





                                     - 86 -
<PAGE>   509

have been altered or interpreted in accordance with the foregoing, is valid and
enforceable pursuant to its terms.

E.        SUCCESSORS AND ASSIGNS

          The rights, benefits and obligations of any entity named or referred
to in the Plan shall be binding on, and shall inure to the benefit of, any
heir, executor, administrator, successor or assign of such entity.  From and
after the Voting Deadline, any heir, executor, administrator, successor or
assign of any Creditor who has voted to accept the Plan shall be bound to
accept the Plan and the treatment of such Creditor hereunder.

F.        SERVICE OF DOCUMENTS ON TCO OR REORGANIZED TCO

          Any pleading, notice or other document required by the Plan to be
served on or delivered to TCO or Reorganized TCO shall be sent by first class
U.S. mail, postage prepaid to:

                           Columbia Gas Transmission Corporation
                           1700 MacCorkle Avenue, S.E.
                           Charleston, West Virginia  25314
                           Attention:  James A. Jarrell

with copies to:

                           The Columbia Gas System, Inc.
                           20 Montchanin Road
                           Wilmington, Delaware  19807
                           Attention:  Tejinder S. Bindra
                                       Edmond M. Ianni

                           Stroock & Stroock & Lavan
                           Seven Hanover Square
                           New York, New York  10004-2696
                           Attention:  Lewis Kruger
                                       Robin E. Keller

                           Cravath, Swaine & Moore
                           825 Eighth Avenue
                           New York, New York  10019-7475
                           Attention:  John F. Hunt





                                     - 87 -
<PAGE>   510

                           Young, Conaway, Stargatt & Taylor
                           11th Floor - Rodney Square North
                           P.O. Box 391
                           Wilmington, Delaware  19899-0391
                           Attention:  James L. Patton, Jr.

G.        PAYMENT AND WITHHOLDING OF TAXES

          Except as otherwise specifically provided in the Plan, all
distributions made pursuant to the Plan shall, where applicable, be subject to
information reporting to appropriate governmental authorities and to
withholding of taxes.





                                     - 88 -
<PAGE>   511

CONFIRMATION REQUEST

          TCO hereby requests Confirmation of the Plan pursuant to Section
1129(a) of the Bankruptcy Code.

Dated:  April 17, 1995
        Charleston, West Virginia

                                                   Respectfully submitted,

                                                   COLUMBIA GAS TRANSMISSION
                                                   CORPORATION


                                                   By:__________________________
                                                       James P. Holland
                                                       Chairman and Chief
                                                       Executive Officer





                                     - 89 -


<PAGE>   512
                     IN THE UNITED STATES BANKRUPTCY COURT
                          FOR THE DISTRICT OF DELAWARE

- ---------------------------------X
                                 :
IN RE:                           :     CHAPTER 11
                                 :
COLUMBIA GAS TRANSMISSION        :     CASE NO. 91-804 (HSB)
CORPORATION,                     :
                                 :
                 DEBTOR.         :
- ---------------------------------X
 


                 DISCLOSURE STATEMENT PURSUANT TO SECTION 1125
                 OF THE BANKRUPTCY CODE FOR THE AMENDED PLAN OF
                  REORGANIZATION OF COLUMBIA GAS TRANSMISSION
                        CORPORATION DATED APRIL 17, 1995


                                        Respectfully Submitted,

                                        STROOCK & STROOCK & LAVAN
                                        Lewis Kruger
                                        Robin E. Keller
                                        Seven Hanover Square
                                        New York, New York  10004-2594
                                        (212) 806-5400

                                        CRAVATH, SWAINE & MOORE
                                        John F. Hunt
                                        John E. Beerbower
                                        825 Eighth Avenue
                                        New York, New York  10019-7475
                                        (212) 474-1000

                                        YOUNG, CONAWAY, STARGATT & TAYLOR
                                        James L. Patton, Jr.
                                        11th Floor - Rodney Square North
                                        P.O. Box 391
                                        Wilmington, Delaware  19899-0381
                                        (302) 571-6600

                                        Co-Counsel for Debtor.


THIS DISCLOSURE STATEMENT HAS NOT BEEN APPROVED BY THE BANKRUPTCY COURT FOR
CIRCULATION TO CREDITORS OR FOR USE IN THE SOLICITATION OF VOTES ON THE AMENDED
PLAN OF REORGANIZATION OF COLUMBIA GAS TRANSMISSION CORPORATION.
<PAGE>   513



<TABLE>
<S>      <C>                                                                                                                     <C>
I.       SUMMARY  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
         A.      Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
         B.      Executive Summary  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   2
                 1.       The Debtor and its Business . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   2
                 2.       The Problems that Led to the Chapter 11 Petitions . . . . . . . . . . . . . . . . . . . . . . . . . .   4
                 3.       TCO's Business Operations and Financial Performance and Prospects . . . . . . . . . . . . . . . . . .   7
                 4.       Obstacles to Reorganization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   9
                          a.      Producer Claims Litigation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   9
                          b.      Intercompany Claims Litigation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  12
                          c.      Customer Disputes   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  13
                          d.      IRS Claim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  17
                          e.      Environmental Liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  18
                 5.       Proposed Settlements With Producers and Customers . . . . . . . . . . . . . . . . . . . . . . . . . .  18
                          a.      Producer Settlement and Settlement Offer  . . . . . . . . . . . . . . . . . . . . . . . . . .  19
                          b.      The Proposed Customer Settlement  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  22
                          c.      Other Unsecured Claims  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  24
                          d.      The Columbia Unsecured Claim  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  25
                 6.       The Cornerstone of the TCO Plan:  The Columbia Omnibus Settlement . . . . . . . . . . . . . . . . . .  25
         C.      Distributions Under the Plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  27
         D.      Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  28
         E.      Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  28

II.      OVERVIEW OF THE PLAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
         A.  Reorganized TCO  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
         B.  Summary of Description of Classes and Distributions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
         TABLE OF SUMMARY DESCRIPTION OF CLASSES AND THEIR DISTRIBUTIONS  . . . . . . . . . . . . . . . . . . . . . . . . . . .   6
         1.  Unclassified Claims  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6
         2.  Secured Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   8
         3.  Unsecured Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   9
         4.  Assumed Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  14
         5.  Interests  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  15

III.     BUSINESS ISSUES  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
         A.      TCO's Pre-Bankruptcy Corporate Structure and Operations; Historical Industry Background  . . . . . . . . . . .   1
         B.      Events Leading to the Filing of TCO's Reorganization Case  . . . . . . . . . . . . . . . . . . . . . . . . . .   5
                 1.       Gas Shortages and Reversal of Federal Gas Price Policies  . . . . . . . . . . . . . . . . . . . . . .   5
                 2.       Emergence of the Gas "Bubble" and
                          the Effect on TCO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   7
                 3.       The Advent of "Open Access" and "Unbundling"  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  10
                 4.       Further Federal Actions Affecting the Cost of Pipeline "Merchant" Gas . . . . . . . . . . . . . . . .  11
</TABLE>
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<TABLE>
<S>      <C>                                                                                                                     <C>
                 5.       TCO's 1991 "Excess Supply Crisis" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  12

IV.      CURRENT AND FUTURE OPERATIONS; CUSTOMER AND UPSTREAM PIPELINE ISSUES AND SETTLEMENTS.  . . . . . . . . . . . . . . . .   1
         A.      TCO's Implementation of Order No. 636 Restructuring  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
                 1.       General Overview  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
                 2.       Procedural Status of TCO's Restructuring  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   3
                 3.       Impact on TCO's Services  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   5
                 4.       Rate Issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6
                 5.       Customer Contracts  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   7
                 6.       Upstream Pipeline Contracts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  10
                 7.       Transition Cost Recovery Mechanisms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  14
         B.      Regulatory Claims and Related Litigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  16
                 1.       Customer Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  18
                 2.       Upstream Pipeline Supplier Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  20
                 3.       The Omnibus FERC Motion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  23
                 4.       Customer Contract Issues and Recoupment and Setoff Motions  . . . . . . . . . . . . . . . . . . . . .  27
                 5.       The BG&E Case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  29
                 6.       Order No. 94 Issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  32
                 7.       TCO Rate Cases  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  35
                          a.      The 1990 Rate Case Settlement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  35
                          b.      The 1991 Rate Case Settlement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  37
                 8.       FERC Forum Litigation Generally . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  37
         C.      Customer Settlement Proposal; Treatment of Regulatory and Other Customer and Pipeline Claims under the Plan  .  39
         D.      Order No. 636 Implementation and Post-Confirmation Operations Generally  . . . . . . . . . . . . . . . . . . .  47

V.       SUMMARY OF CLAIMS AND OTHER SIGNIFICANT ISSUES IN THE CHAPTER 11 CASE  . . . . . . . . . . . . . . . . . . . . . . . .   1
         A.      Producer Claims  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
         B.      Estimation of Producer Claims  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   2
                 1.       The Establishment of Claims Estimation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . .   2
                 2.       Status of Claims Estimation Procedures  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6
                          a.      General Proceedings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6
                          b.      Proceedings Relating to Contract Rejection Claims . . . . . . . . . . . . . . . . . . . . . .   7
                          c.      Consideration of Non-rejection Producer Claims  . . . . . . . . . . . . . . . . . . . . . . .  16
                 3.       The Claims Mediator's Initial Report on Generic Issues  . . . . . . . . . . . . . . . . . . . . . . .  17
         C.      The Settlement With Various Producers  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  23
         D.      Settlement Offers for Remaining Producer Claims  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  25
         E.      Non-Producer Claims  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  29
                 1.       State and Local Taxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  32
                 2.       Accounts Payable/Trade Debt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  33
                 3.       Miscellaneous Claims  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  34
</TABLE>
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<TABLE>
<S>      <C>                                                                                                                     <C>
                 4.       Kentucky West Virginia Gas Company Claim  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  35
                 5.       IRS and Other Priority Tax Claims; Affiliate Tax Claims . . . . . . . . . . . . . . . . . . . . . . .  37
                 6.       Pension Claims  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  41
                 7.       Environmental Issues  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  42
         F.      Miscellaneous Administrative Proceedings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  50
                 1.       Commencement of the Case  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  50
                 2.       First Day Orders  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  51
                 3.       Debtor in Possession Financing  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  52
                 4.       Formation of Committees and Retention of Professionals  . . . . . . . . . . . . . . . . . . . . . . .  52
                 5.       Extension of Exclusive Period to File Plan of Reorganization  . . . . . . . . . . . . . . . . . . . .  54
                 6.       Motion for a Data Room  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  55
                 7.       Assumption of Nonresidential Leases; Extension of Time to Remove Actions and File Proofs of Claim
                          on Behalf of Creditors  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  58
                 8.       Cash Collateral Order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  59
                 9.       Appointment of Fee Examiner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  60
                 10.      Procedures Relating to the Filing and Determination of Claims . . . . . . . . . . . . . . . . . . . .  60
                          a.      Bar Dates   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  60
                          b.      Claims Agent  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  62
                          c.      Claim Objections Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  62
                          d.      Removal/Filing of Claims  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  62
         G.      Investment Guidelines Litigation and Other Investment Decisions  . . . . . . . . . . . . . . . . . . . . . . .  64

VI.      THE COLUMBIA SYSTEM:  PUBLIC UTILITY HOLDING COMPANY ACT REGULATION, SYSTEM FINANCING, COLUMBIA'S CLAIM AGAINST TCO
         AND THE INTERCOMPANY CLAIMS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
         A.      The Columbia System  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
                 1.       System Companies and Relationships with TCO . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
                          a.      Columbia Distribution Companies (collectively, "CDC") . . . . . . . . . . . . . . . . . . . .   1
                          b.      Columbia Gulf Transmission Corporation ("Gulf") . . . . . . . . . . . . . . . . . . . . . . .   2
                          c.      Columbia Gas Service Corporation ("Columbia Service Corporation") . . . . . . . . . . . . . .   2
                          d.      Columbia Natural Resources, Inc. ("CNR"), and Columbia Gas Development Corporation ("CGD")  .   3
                          e.      Columbia LNG Corporation ("Columbia LNG") . . . . . . . . . . . . . . . . . . . . . . . . . .   3
                          f.      TriStar Ventures Corporation and Columbia Energy Services . . . . . . . . . . . . . . . . . .   3
                 2.       Certain Shared Operation and Maintenance Services within the System . . . . . . . . . . . . . . . . .   4
         B.      Regulation by the SEC Under the HCA of the
                 Columbia System; HCA Regulation of
                 Chapter 11 Plans   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   4
</TABLE>
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<S>      <C>                                                                                                                     <C>
         C.      Regulation by the SEC Under the HCA of External and Internal Columbia System Financings and of Intra-System
                 Sales and Service Contracts and Asset Transfers  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6
                 1.       System External and Internal Financing  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6
                 2.       SEC Regulation under the HCA of Intra-System Sales and Service Contracts and Asset Transfers  . . . .   7
         D.      Claims of Columbia and its Other Subsidiaries against the TCO Estate . . . . . . . . . . . . . . . . . . . . .   8
                 1.       Columbia's Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   8
                          a.      Secured Claims for Borrowed Money . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   8
                          b.      Unsecured Claims for Borrowed Money . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   9
                          c.      Unsecured Claims Arising Under Contractual Arrangements . . . . . . . . . . . . . . . . . . .  10
                          d.      Miscellaneous Payable Claims  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  10
                 2.       CNR's Claim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  10
                 3.       Other Columbia Subsidiaries' Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  11
         E.      The Intercompany Claims (Asserted on Behalf of the TCO Estate Against Columbia and CNR)  . . . . . . . . . . .  11
                 1.       Background  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  11
                          a.      TCO's 1985 Crisis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  11
                          b.      Transfer of Natural Resource Properties from TCO to CNR . . . . . . . . . . . . . . . . . . .  14
                                  (i)      Initial Approval of Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . .  14
                                  (ii)     Withdrawal of the Application  . . . . . . . . . . . . . . . . . . . . . . . . . . .  15
                                  (iii)    Resubmittal of the Reorganization  . . . . . . . . . . . . . . . . . . . . . . . . .  15
                                  (iv)     The CNR Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  16
                 2.       The Intercompany Claims Litigation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  17
                          a.      Stipulation and Order Concerning Prosecution of the Intercompany Claims . . . . . . . . . . .  17
                          b.      Intercompany Claims Litigation Proceedings  . . . . . . . . . . . . . . . . . . . . . . . . .  17
                          c.      Response of Columbia and CNR  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  20
                 3.       Intercompany Claims Litigation Pretrial Matters . . . . . . . . . . . . . . . . . . . . . . . . . . .  22
                 4.       The Intercompany Claims Trial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  24
                 5.       Summary of Creditors' Committee's Position  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  24
                 6.       Summary of Columbia's Analysis of the Intercompany Claims . . . . . . . . . . . . . . . . . . . . . .  27
                 7.       Settlement of the Intercompany Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  29

VII.     PLAN TREATMENT OF CLAIMS AND SUMMARY OF OTHER PLAN PROVISIONS  . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
         A.      Classification and Treatment of Claims and
                 Interests  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
                 1.       Unclassified Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   2
                          a.      Administrative Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   2
                                  (i)       Professional Claims   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   2
                                  (ii)      Post-Petition Operational Claims  . . . . . . . . . . . . . . . . . . . . . . . . .   3
</TABLE>
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<TABLE>
         <S>     <C>                                                                                                             <C>
                                  (iii)     Assumed Executory Contract Claims   . . . . . . . . . . . . . . . . . . . . . . . .   4
                                  (iv)      U.S. Trustee's Fee Claims   . . . . . . . . . . . . . . . . . . . . . . . . . . . .   5
                                  (v)       Miscellaneous Administrative Claims   . . . . . . . . . . . . . . . . . . . . . . .   6
                                  (vi)      Administrative Recoupment Claims  . . . . . . . . . . . . . . . . . . . . . . . . .   6
                          b.      Priority Tax Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   8
                          c.      East Lynn Condemnation Obligation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  10
                 2.       Classes of Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  11
                          a.      Class 1 Claims - Secured Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  11
                                  (i)       Class 1.1 - The DIP Facility Claims   . . . . . . . . . . . . . . . . . . . . . . .  11
                                  (ii)      Class 1.2 - Secured Producer Claims   . . . . . . . . . . . . . . . . . . . . . . .  11
                                  (iii)     Class 1.3 - Other Secured Claims  . . . . . . . . . . . . . . . . . . . . . . . . .  12
                          b.      Class 2.1 Claim - The Columbia Secured Claim  . . . . . . . . . . . . . . . . . . . . . . . .  13
                                  (i)       Interest on Inventory Loan Agreement  . . . . . . . . . . . . . . . . . . . . . . .  14
                                  (ii)      Interest on First Mortgage Bonds - Series A   . . . . . . . . . . . . . . . . . . .  14
                                  (iii)     Interest on First Mortgage
                                  Bonds - Series B, D, E and F  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  15
                          c.      Class 3 Claims - Unsecured Claims   . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  16
                                  (i)       Settlement Values and Allowance Amounts   . . . . . . . . . . . . . . . . . . . . .  16
                                  (ii)      Class 3.1 - Unsecured Claims of $25,000 or Less   . . . . . . . . . . . . . . . . .  19
                                  (iii)     Class 3.2 - Unsecured Customer Refund Claims and GRI Claims   . . . . . . . . . . .  20
                                  (iv)      Remaining Unsecured Claims  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  27
                                            (a)    Description of Remaining Unsecured Claims Classes  . . . . . . . . . . . . .  27
                                            (b)    Treatment of Remaining Unsecured Claims  . . . . . . . . . . . . . . . . . .  27
                          d.      Class 4 Claims - Assumed Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  34
                                  (i)       Class 4.1 Claims - Environmental Claims   . . . . . . . . . . . . . . . . . . . . .  34
                                  (ii)      Class 4.2 Claims - Certain Condemnation Claims  . . . . . . . . . . . . . . . . . .  35
                                  (iii)     Class 4.3 Claims - Pension Claims   . . . . . . . . . . . . . . . . . . . . . . . .  36
                                  (iv)      Class 4.4 Claims - Surety Bond Related Claims   . . . . . . . . . . . . . . . . . .  36
                                  (v)       Class 4.5 Claims - Affiliate Tax Claims   . . . . . . . . . . . . . . . . . . . . .  37
                          e.      Class 5 Interests - Common Stock of TCO . . . . . . . . . . . . . . . . . . . . . . . . . . .  37
         B.      Mechanism for Quantifying Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  37
                 1.       Producer Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  37
</TABLE>
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<TABLE>
         <S>     <C>                                                                                                             <C>
                 2.       Disputed General Unsecured Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  39
         C.      Transactions on the Effective Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  39
         D.      Distributions Under the Plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  41
                 1.       Distributions on Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  41
                 2.       Delivery of Distributions and Unclaimed Distributions . . . . . . . . . . . . . . . . . . . . . . . .  42
                          a.      Delivery of Distributions in General  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  42
                          b.      Unclaimed Distributions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  43
                 3.       Means of Cash Payments  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  44
                 4.       Setoffs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  45
         E.      Settlement of Intercompany Claims Litigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  45
         F.      Settlement of Customer Refund Disputes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  46
         G.      Settlement of 1990 Rate Case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  47
         H.      Procedures For Establishing Allowed Claims And For Resolving Disputed Claims; Bar Dates  . . . . . . . . . . .  48
                 1.       Bar Dates for Certain Administrative Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  48
                          a.      Professional Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  48
                          b.      Bar Date for Administrative Claims Arising From Rejection of Executory Contracts  . . . . . .  49
                 2.       Bar Date for Objections to Certain Non-Administrative Claims  . . . . . . . . . . . . . . . . . . . .  50
                          a.      Claims Subject to the Claims Estimation Procedures  . . . . . . . . . . . . . . . . . . . . .  50
                          b.      Objections to Other Non-Administrative Claims . . . . . . . . . . . . . . . . . . . . . . . .  50
                 3.       Authority to Prosecute Objections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  50
                 4.       Liquidation of Claims for Voting  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  51
         I.      Miscellaneous  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  51
                 1.       Conditions to Confirmation and Effectiveness  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  51
                          a.      Conditions to Confirmation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  51
                          b.      Conditions to Effective Date  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  55
                 2.       Assumption and Rejection of Executory Contracts . . . . . . . . . . . . . . . . . . . . . . . . . . .  56
                 3.       Continued Corporate Existence and Vesting of Assets in Reorganized TCO  . . . . . . . . . . . . . . .  57
                 4.       Corporate Governance, Directors and Officers; Compensation  . . . . . . . . . . . . . . . . . . . . .  57
                 5.       Dissolution of Committees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  58
                 6.       Discharge, Termination, and Injunction  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  60
                 7.       Continuation of Retiree Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  60
                 8.       Jurisdiction of the Bankruptcy Court  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  60
                 9.       Limitation of Liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  61
                 10.      Modification of the Plan  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  61
                 11.      Revocation of the Plan  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  62
                 12.      Severability of Plan Provisions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  62
                 13.      Successors and Assigns  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  63
</TABLE>
<PAGE>   519
<TABLE>
<S>                                                                                                                              <C>
VIII.    RISK FACTORS RELATING TO PLAN IMPLEMENTATION AND CREDITOR DISTRIBUTIONS  . . . . . . . . . . . . . . . . . . . . . . .   1
                 A.       Conditions to Confirmation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
                          1.      Satisfaction of Confirmation Requirements of Section 1129 . . . . . . . . . . . . . . . . . .   1
                          2.      Confirmation of the Columbia Plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   2
                          3.      SEC Approval  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   4
                          4.      No Material Adverse Changes to Plan Assumptions or Business   . . . . . . . . . . . . . . . .   5
                          5.      No Environmental Liability Claims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6
                          6.      IRS Ruling on Deductibility of Producer Payments  . . . . . . . . . . . . . . . . . . . . . .   6
                          7.      Approvals of the Customer Settlement Proposal . . . . . . . . . . . . . . . . . . . . . . . .   7
                          8.      Approval of Initial Accepting Producers Settlement  . . . . . . . . . . . . . . . . . . . . .   9
                          9.      Prohibition of Certain Revisions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  10
                          10.     Acceptance of Settlement Values by Producers  . . . . . . . . . . . . . . . . . . . . . . . .  10
                 B.       Conditions to Effective Date  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  11
                          1.      Columbia's Plan of Reorganization Shall be Effective  . . . . . . . . . . . . . . . . . . . .  12
                          2.      No Stay of TCO's Confirmation Order . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  12
                          3.      No Material Adverse Changes to TCO's Business . . . . . . . . . . . . . . . . . . . . . . . .  12
                          4.      Effective Date  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  12
                          5.      Intercompany Claims Litigation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  13
                 C.       Liquidation of General Unsecured Claims; Claims Allowance Process Generally . . . . . . . . . . . . .  13
                 D.       Projections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  14
                 E.       Liabilities Assumed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  15

IX.  TAX ASPECTS OF THE PLAN  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
         A.      Tax Consequences of the Plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
                 1.       Tax Consequences to TCO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
                          a.      General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
                          b.      Discharge of Indebtedness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   2
                          c.      Deduction for Payments  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   4
                 2.       Tax Consequences to the TCO Creditors other than Columbia . . . . . . . . . . . . . . . . . . . . . .   5
                 3.       Tax Ruling  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6
                 4.       Importance of Obtaining Professional Tax Assistance . . . . . . . . . . . . . . . . . . . . . . . . .   7
         B.      Assumption of Tax Allocation Agreement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   7

X.       VOTING PROCEDURES AND CONFIRMATION REQUIREMENTS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
         A.      Confirmation Hearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
         B.      Confirmation Requirements  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
                 1.       Acceptance  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   3
                 2.       Best Interests Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   5
</TABLE>
<PAGE>   520
<TABLE>
<S>      <C>                                                                                                                     <C>
                 3.       Feasibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6
                 4.       The Plan must Comply with the Applicable Provisions of the Bankruptcy Code  . . . . . . . . . . . . .   6
                          a.      Classification  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6
                          b.      Other Plan Provisions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  14
                 5.       TCO must Comply with the Applicable Provisions of the Bankruptcy Code . . . . . . . . . . . . . . . .  16
                 6.       Any Governmental Regulatory Commission Having Jurisdiction over TCO's Rates Must Have Approved Any
                          Rate Change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  18
                 7.       Alternatives to the Plan  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  18
                          a.      Cramdown Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  18
                          b.      Liquidation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  21
         C.      Voting Procedures and Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  21
                 1.       Voting Requirements - Generally . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  21
                 2.       Elections by Certain Creditors  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  24
                          a.      Elections by Holders of Producer Claims . . . . . . . . . . . . . . . . . . . . . . . . . . .  24
                          b.      Elections by Disputed General Unsecured Claims  . . . . . . . . . . . . . . . . . . . . . . .  24
                          c.      Elections by Holders of Customer Regulatory Claims and GRI Claim  . . . . . . . . . . . . . .  25

XI.      FINANCIAL PROJECTIONS, PRO FORMA FINANCIAL STATEMENTS, AND LIQUIDATION ANALYSIS  . . . . . . . . . . . . . . . . . . .   1
         A.      Financial Analysis of Plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
         B.      Recapitalization Post-Emergence/Feasibility  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   5
         C.      Financial Projections  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6
                 i)          Throughput . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  11
                 ii)         Successful implementation of Order No. 636 . . . . . . . . . . . . . . . . . . . . . . . . . . . .  12
                 iii)        Environmental liabilities. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  12
                 iv)         Cost of capital financing  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  14
                 v)          Regulatory Lag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  14
                 vi)         Upstream Pipeline Order No. 94 Costs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  14
                 vii)        Customer Settlement  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  15
                 viii)       Majorsville/Heard Storage Facilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  16
                 ix)         Market Expansion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  16
                 x)          Federal Income Taxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  16
         D.      Capital Structure and Other Issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  17
         E.      Pro Forma Financial Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  18
         F.      Liquidation Analysis/Best Interests Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  18
                 i)          Estimated Liquidation Proceeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  20
                 ii)         Deductions from Liquidation Fund . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  23
                 iii)        Creation of Additional Claims  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  23
                 iv)         Timing of the liquidation process  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  25
                 v)          Distributions; absolute priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  26
</TABLE>

<PAGE>   521

I.       SUMMARY

         A.      INTRODUCTION

         On July 31, 1991, Columbia Gas Transmission Corporation ("TCO")(1) and
its parent company, The Columbia Gas System, Inc. ("Columbia"), each filed
voluntary petitions for reorganization under Chapter 11 of title 11 of the
United States Code, 11 U.S.C. Sections 101, et seq. (the "Bankruptcy Code").  On
January 18, 1994, TCO filed its original plan of reorganization dated January
18, 1994 (the "1994 Plan") and a Disclosure Statement relating thereto (the
"1994 Disclosure Statement"), but did not proceed to schedule hearings on that
plan because of its stated intention to conduct further negotiations with its
creditors regarding their treatment under the 1994 Plan.  In recent months,
intensive negotiations with major Producer Creditors and Customer Creditors have
finally culminated in consensual agreements in principle regarding the treatment
of Customer and Producer Claims and the proposed resolution of extensive
litigation with both constituencies. Simultaneously with the filing of this
Disclosure Statement, TCO filed its Amended Plan of Reorganization dated April
17, 1995 (the "Plan"). Columbia is a co-proponent of the TCO Plan, subject to
Bankruptcy Court and other approvals in its own Case.


- -----------------------
(1)      Terms not otherwise defined in this Section I shall have the meanings
         ascribed to them in the Plan or in subsequent Sections of this
         Disclosure Statement.


                                      I-1
<PAGE>   522

         On April 12, 1995, representatives of TCO, Columbia, and each of their
Official Committees informed Judge Balick of the Bankruptcy Court and Judge
Farnan of the United States District Court of the projected filing of their
Plans, and the nature of the settlement agreements reflected therein.

         On April 17, 1995, Columbia filed its Plan of Reorganization (the
"Columbia Plan"), which contains a comprehensive structure for the
recapitalization of Columbia.   The Columbia Plan embodies the Columbia Omnibus
Settlement (more fully described below) which is integral to TCO's Plan.

         TCO believes that most of its significant Producer and Customer
Creditors support the Plan and strongly desire TCO's emergence from Chapter 11
and the effectiveness of this Plan prior to year end.

         This Disclosure Statement is submitted by TCO in connection with its
solicitation of acceptances of the Plan.  The following Executive Summary is
intended to highlight key aspects of the Reorganization Case and the proposed
Plan, and is not intended in any way to substitute for a complete review of the
Plan and the balance of this Disclosure Statement.

B.       EXECUTIVE SUMMARY

         1.      THE DEBTOR AND ITS BUSINESS

         TCO owns and operates a 19,000 mile natural gas ("gas") transmission
pipeline network and related extensive underground gas storage fields that
serve parts of thirteen states in the Northeastern, Mid-Atlantic, Midwestern
and Southeastern regions





                                      I-2
<PAGE>   523

of the United States and the District of Columbia.  TCO's Customers are various
affiliated and unaffiliated gas distribution companies, gas marketers,
producers and end users of gas.  Its rates, charges, services and facilities
are subject to regulation by the Federal Energy Regulatory Commission ("FERC"),
primarily pursuant to the Natural Gas Act, 15 U.S.C. Sections 717, et seq.
("NGA").

         TCO is a wholly-owned subsidiary of Columbia, which is a registered
public utility holding company under the Public Utility Holding Company Act of
1935, as amended, 15 U.S.C. Sections 79, et seq. ("HCA").  Columbia's seventeen
other operating subsidiaries are engaged in the exploration, production,
marketing, transmission and distribution of natural gas, other energy ventures
such as cogeneration and energy-related business and other specialized
services.  Pursuant to the HCA, Columbia's external and intercompany financing
activities, including certain transactions contemplated by the Plan, and
certain of its intercompany contractual relationships and various other matters
are regulated by the Securities and Exchange Commission ("SEC").

         Prior to the mid-1980s, TCO operated principally as a "merchant" of
gas, purchasing gas from Producers and other pipeline companies and reselling
it to distribution companies.  Thereafter and until November 1, 1993,
consistent with a series of significant changes occurring in federal regulatory
policy, TCO's "merchant" activities declined and a steadily increasing





                                      I-3
<PAGE>   524

portion of its business consisted of transporting gas owned by others and
providing gas storage services for its Customers.  Since November 1, 1993,
following a fundamental change in the gas industry brought about by FERC under
its Order No. 636, TCO no longer conducts significant gas merchant activities
and is presently almost entirely engaged in the business of transporting and
storing gas for its Customers.

                 2.       THE PROBLEMS THAT LED TO THE CHAPTER 11 PETITIONS

         In 1984-85, TCO and Columbia had attempted to solve permanently TCO's
business problems through a major settlement with TCO's customers and a massive
buydown of TCO's high-priced, high-volume gas supply contracts.  The success of
that effort, however, was hampered by several unexpected market and regulatory
developments over the subsequent years.

         In 1986, gas prices declined precipitously, contrary to predictions by
both government and industry.  In early 1990, prices on the spot market again
declined sharply and in early 1991, fell below $1.25/mcf.  In addition, TCO's
service area experienced six consecutive warmer-than-normal winters, reducing
demand, as well as price, and permitting TCO's customers to take advantage of
FERC's new "open access" policy, whereby pipeline capacity was made available
to wholesale and industrial customers to transport gas purchased from
producers.  Transportation allowed customers to satisfy much of their
weather-reduced demand with spot market purchases, replacing sales of TCO'S own
gas.





                                      I-4
<PAGE>   525

         The resulting business problems of TCO were exacerbated by FERC's
decision to address only one side of the market disequilibrium.  FERC relieved
customers of their commitment to purchase from pipelines, but it did not
relieve pipelines of their obligations to supply customers' needs or their
contractual obligations to purchase gas from producers.  Then, in 1989, the
Natural Gas Wellhead Decontrol Act was enacted, providing for deregulation of
natural gas that had been deemed "forever regulated."  As a consequence, TCO
contracts that had previously been considered low-cost sources of supply became
potential financial burdens.  In addition, certain producers with contracts
that had become high-priced, as market prices fell, or that were expected to
become high- priced as a result of the 1989 Decontrol Act aggressively engaged
in development activities under those contracts, increasing the volumes of gas
TCO would be required to purchase.  TCO was also beset by other disappointing
court and regulatory decisions.

         TCO's financial condition and prospects deteriorated in 1991 as the
record warm weather that had begun in early 1990 continued.  The spot market
had become TCO's primary competition and declines in the current (and projected
future) spot marker prices undercut the bases for TCO's revenue projections for
1991 and several years thereafter.  TCO's sales volumes fell to approximately
10% of throughput, and TCO's storage capacity became severely overburdened.
Even some market-responsive





                                      I-5
<PAGE>   526

contracts became burdensome as price adjustments lagged behind declining market
prices.

         In May 1991, Columbia reported that the effects of the warm weather
were likely to depress TCO's financial performance for the next year or more;
that TCO was likely to incur take-or-pay liability in 1991; that actions in
addition to the contract buydown program announced in 1990 would be required to
bring TCO's gas prices to marketable levels; and that, if current low future
price projections continued, meaningful changes in TCO's merchant function
would be critical to its successful future financial performance.  On May 15,
Columbia reported that the TCO problems and possible responses were under
intense study in light of changing current and prospective market conditions.

         On June 19, 1991, Columbia announced that its Board of Directors had
determined that, in light of the further studies of TCO's problems, Columbia
would continue to support TCO only if a comprehensive approach representing a
permanent solution to the producer contract problem was implemented.  Columbia
simultaneously announced a $600 million plan to renegotiate all of TCO's above-
market contracts.  Columbia also reported that the present value of the losses
associated with those contracts, if not reformed, could exceed $1 billion, a
substantial portion of which was likely to be charged to second quarter income,
and that if the contracts could not be renegotiated or credit lines could not
be maintained, Columbia, TCO or both might be forced to file bankruptcy
petitions.





                                      I-6
<PAGE>   527

         Columbia immediately initiated negotiations with its banks in an
effort to reestablish lines of credit that were interrupted by the June 19
announcement, and TCO promptly proposed a comprehensive producer settlement
plan (the "PSP") offering $600 million to buy out producers' over-market
contracts and settle other contractual disputes.  Progress was made in both
areas of negotiation.  However, agreements could not be concluded before TCO's
and Columbia's available cash resources were substantially exhausted, forcing
both to seek Chapter 11 protection on July 31, 1991.  Further discussion of the
Debtor's business background and the events leading to Chapter 11 is contained
in Section III of this Disclosure Statement.

                 3.       TCO'S BUSINESS OPERATIONS AND FINANCIAL
                          PERFORMANCE AND PROSPECTS

         Subsequent to the filing of its Chapter 11 petition, TCO rejected, as
permitted by the Bankruptcy Code, more than 4,800 gas purchase contracts.
Rejection of the above-market-price contracts enabled TCO to purchase
market-priced gas, allowing TCO to effectively perform its merchant function.
Subsequently, as of November l, 1993, TCO successfully implemented a major
restructuring of its transportation and storage services under FERC's Order No.
636.  In essence, the implementation of Order No. 636 restructuring
requirements effectively eliminated any residual role of pipelines as merchants
of natural gas, and provided specific directives and mechanisms to pipelines to
buy-out or otherwise terminate their gas contract liabilities.





                                      I-7
<PAGE>   528

         As a result of the successful implementation of restructured
operations as well as the termination of over-market gas contracts, TCO has
recorded substantial operating profits and projects having a cash balance of
approximately $1.4 billion as of December 31, 1995.  TCO expects to continue to
operate profitably in the future by providing an array of competitively-priced,
FERC- approved transportation and storage services to current and prospective
Customers.

         Regulated natural gas pipelines have the right to recover their costs
associated with complying with the requirements of Order No. 636 from their
Customers, including costs associated with reformation or termination of gas
purchase contracts.  However, FERC has determined that, with minor exceptions,
TCO is not eligible to recover costs arising from its rejection of Producers'
gas supply contracts.  The ultimate level of TCO's other recoupable transition
costs, which are a significant component of TCO's enterprise value, are
currently the subject of litigation before the FERC, which will be
substantially resolved through the Customer Settlement Proposal more fully
discussed in Section IV.C. below.

         Since the inception of its Reorganization Case, TCO has incurred
substantial reorganization expenses which are expected to total approximately
$130 million by December 31, 1995.  Moreover, the largest Claims against the
TCO Estate for money borrowed are held by Columbia and are secured by
substantially all of TCO's assets.  This indebtedness bears interest at rates





                                      I-8
<PAGE>   529

substantially higher than those earned by TCO on its excess cash because of
limitations on TCO's temporary investments imposed by the Bankruptcy Code.  As
a result, the growth in TCO's secured interest obligations has exceeded its
interest earnings on its cash available for debt service by an amount exceeding
$450 million when projected to December 31, 1995.

                 4.       OBSTACLES TO REORGANIZATION

         In contrast to the situation of many other Chapter 11 debtors,
reorganization of TCO has not been hampered by unprofitable or marginal
business operations.  Rather, in TCO's case the achievement of the Chapter 11
objective of reorganization has been hindered primarily by the enormity and
complexity of the disputed Claims filed against it by Producer Creditors, by
extensive litigation over the amount and priority of Customer Refund Claims and
TCO's ability to recover costs from its Customers, and by the litigation
against Columbia brought by the Creditors' Committee (and joined by the
Customers' Committee) on TCO's behalf.

                 a.       PRODUCER CLAIMS LITIGATION

         The Producer counterparties to the rejected gas purchase contracts
filed Claims for rejection damages in excess of $13 billion, which amount TCO
believes, based on its own analysis and its review of the court-appointed
Claims Mediator's Initial Report and Recommendations on Generic Issues for
Natural Gas Contract Claims dated October 13, 1994 and the Supplement to
Initial Report and Recommendations of the Claims Mediator dated


                                      I-9
<PAGE>   530

February 17, 1995 (collectively, the "Claims Mediator Report") is many times
greater than the actual allowable level of those Claims.  Producers also filed
other Claims based on pre-petition contractual disputes relating to pricing,
take-or-pay obligations and other issues in amounts often significantly in
excess of TCO's estimates of its liabilities with respect to such disputes.

         Efforts to liquidate Producer Claims commenced with the initial filing
by TCO in May, 1992 of an Estimation Motion and objections to those Claims.
The objective of TCO's Estimation Motion was, among other things, to establish
a consistent methodology for calculating contract rejection and other Producer
Claims which had been filed based on widely differing bases.  The Bankruptcy
Court entered a procedural order that provided for (i) the appointment of the
Claims Mediator, (ii) initial resolution of issues generic to all or large
categories of gas supply Contract Claims and (iii) subsequent resolution of
issues specific to particular rejected gas supply contracts.  By agreement
confirmed by order of the Bankruptcy Court, Charles Normandin, Esq. was
appointed Claims Mediator, and John Norris, Esq. was appointed to advise Mr.
Normandin with respect to the natural gas law aspects of the proceedings.

         Extensive evidentiary hearings before the Claims Mediator with respect
to generic issues relating to the recalculation of both Contract Rejection
Claims and non-Contract Rejection Claims were conducted over the next two
years, concluding in the first





                                      I-10
<PAGE>   531

quarter of 1995.  Preliminary hearings and discovery also occurred on TCO's
proposal of a market reserves methodology to calculate Contract Rejection
Claims.

         In connection with the Claims Mediator Report, Mr. Normandin generated
forms for the recalculation of Producer Claims and distributed them to Producer
Creditors.  Those recalculated Claims forms are due to be completed by
Producers and returned by May 19, 1995.  Additional hearings on TCO's proposed
market reserves methodology are scheduled for June, 1995.  However, TCO and the
Creditors' Committee intend to file a motion to defer scheduled matters before
Mr. Normandin pending further proceedings on the Claims Settlements
contemplated in the Plan.

         It is apparent simply from the application of a discount rate, and the
imposition of the obligation to mitigate, both of which principles are clearly
recognized and mandated in the Claims Mediator Report, that Producers' filed
Claims will be substantially reduced upon recalculation.  The major unresolved
issues as to Producer Claims levels include the allowable volumes of proven
undeveloped reserves that may be shown to have been dedicated to the rejected
contracts, certain contract-specific pricing issues (the ultimate determination
of which could materially affect certain creditors' claims levels) and the
application of TCO's "market value of reserves" approach to the calculation of
rejection damages.





                                      I-11
<PAGE>   532

         It is also apparent that litigation over these disputed issues, both
between TCO and Producers and among Producers, will result in a further
prolonged estimation process.  As more fully discussed below, TCO and a number
of the largest Producers who have agreed to settle their Claims in connection
with this Plan (the "Initial Accepting Producers"), believe it is in the best
interest of the Estate and its Creditors to set forth the following proposed
structure and mechanisms for resolving Claims, thereby permitting a prompt and
substantial distribution to all settling Creditors.  Further discussion of
Producer and other non-Customer Claims is set forth in Section V of this
Disclosure Statement.

                 b.       INTERCOMPANY CLAIMS LITIGATION

         To avoid possible conflicts of interest and with the approval of
Columbia and of the Bankruptcy Court, TCO assigned to its Creditors' Committee
early on in its Chapter 11 Case the right to assert challenges to Columbia's
Claims against TCO and to bring possible avoidance actions under the Bankruptcy
Code against Columbia and other subsidiaries of Columbia.  The Creditors'
Committee brought an action (later joined in by the Customers' Committee)
against Columbia and one of its other subsidiaries, Columbia Natural Resources,
Inc. ("CNR"), seeking to recharacterize as equity, or to subordinate, debt
claims held by Columbia against TCO, to reclaim various payments made by TCO to
Columbia in respect of its investments in TCO and to set aside the transfer by
TCO to CNR of various oil, gas and coal


                                      I-12
<PAGE>   533

properties allegedly made for inadequate consideration and at a time when TCO
allegedly was insolvent (the "Intercompany Claims").

         On May 13, 1994, Bankruptcy Judge Balick filed a sua sponte motion to
the United States District Court for the District of Delaware seeking
withdrawal of the jurisdictional reference on the Intercompany Claims, which
motion was granted on May 25, 1994.  On September 12, 1994, District Judge
Farnan commenced a six-week trial on the Creditors' and Customers' Committees'
complaints, which concluded on October 25, 1994.  Judge Farnan has announced
that he would issue his decision around June 1, 1995.  However, Columbia and
the TCO Committees which are plaintiffs in the Intercompany Claims Litigation
have requested Judge Farnon to defer ruling pending further proceedings on the
proposed reorganization Plans.

         TCO and Columbia have analyzed the extensive record generated in the
trial in valuing the Intercompany Claims and developing their proposed
settlement.  Regardless of the parties' views of the ultimate outcome should
Judge Farnan rule, extensive appellate litigation likely would ensue and
further delay the reorganization process.  Further discussion of the
Intercompany Claims Litigation is set forth in Section VI of this Disclosure
Statement.

         c.      CUSTOMER DISPUTES

         TCO's status as a regulated gas transmission company under the NGA has
brought into the bankruptcy forum creditors' rights


                                      I-13
<PAGE>   534

issues involving its Customers which were greatly complicated by public law
considerations arising under the NGA.  Both TCO and its Customers have
recognized the existence of issues as to the propriety of treating Refund
Claims on a pari passu level with other pre-petition unsecured Claims.
Customers have asserted trust fund, recoupment and setoff theories as a basis
for elevating their Claims to a higher payout priority.  The litigation
surrounding these Claims has also been prolonged and contentious.  However,
discussions begun during the last half of 1994 have resulted in a broad-based
agreement to resolve Customer regulatory issues, which agreement has been
embodied in a Stipulation which is being presented to FERC for approval.  In
TCO's view, this agreement significantly benefits TCO's Estate and its other
Creditors by defining the level and priority of TCO's liabilities to its
Customers, and providing certainty to TCO's ability to recover substantial
costs from its Customers.

                          i.  FLOW-THROUGH REFUNDS

         Shortly after the commencement of the Reorganization Case, TCO moved
the Bankruptcy Court for permission to honor its obligations under the NGA to
flow through to its Customers refunds received by TCO from upstream pipeline
suppliers.

         The Creditors' Committee opposed TCO's motion and asserted that all
Refund Obligations should be treated as Unsecured Claims.  The legal issues
were litigated until the Supreme Court of the United States denied the
Creditors' Committee's petition for certiorari, thereby affirming the decision
of the United


                                      I-14
<PAGE>   535

States Court of Appeals for the Third Circuit, which affirmed the Bankruptcy
Court's conclusions that (i) Refund Obligations to Customers arising from TCO's
post-petition refund collections from upstream pipelines must be passed on to
Customers in accordance with the NGA and (ii) Refund Obligations arising from
TCO's pre-petition refund collections must be passed on to its Customers but
only to the extent of TCO's "lowest intermediate cash balance" (deemed to be a
"trust fund" and calculated at approximately $3.3 million) in the interval
between the collections and the filing of the Chapter 11 petition.  As a
result, TCO believes the remainder of such obligations with respect to
pre-petition collections have the status of Unsecured Claims; however,
Customers have asserted rights to recoup and/or setoff such amounts, thereby
seeking to achieve a one hundred percent recovery of those Claims from the TCO
Estate, possibly with post-petition interest.

                          ii.     THE BALTIMORE GAS AND ELECTRIC CLAIMS

         On June 24, 1994, the United States Court of Appeals for the District
of Columbia ruled on a long-standing appeal by Customers of a FERC
determination that TCO is entitled to recover from its Customers charges paid
by TCO to its upstream pipeline suppliers totalling approximately $125 million
in principal amount, plus interest.  The matter was remanded to the FERC for a
determination as to the amount of refunds owed by TCO to its Customers, and
such proceedings have been initiated in accordance with FERC orders on the
matter.  Customers have


                                      I-15
<PAGE>   536

asserted an entitlement to recover the full amount, plus pre-and post-petition
interest, and have asserted recoupment and/or setoff rights entitling them to
one hundred percent recoveries of the BG&E Claims as well.

                          iii.    TCO'S 1990 RATE CASE SETTLEMENT
                                  (NGA SECTION 4(E))

         In 1990, TCO filed with FERC proposed higher rate levels and, as
provided by the NGA, on November 1, 1990 began to collect such higher rates
from its Customers subject to an obligation to refund to them with FERC
prescribed interest, any portion of such higher collections determined to be in
excess of "just and reasonable" rates.  The pre-petition and post-petition
collections subject to refund total approximately $135 million, of which
approximately two-thirds relate to pre-petition periods.  A settlement of this
rate case has been negotiated and approved by FERC, but the Bankruptcy Court
has denied TCO authority to implement the settlement because of the
pre-petition component.  If settlement authority is granted on appeal, it would
establish TCO's refund obligations at approximately $58.5 million for the pre-
and post-petition periods plus FERC-prescribed interest to the date of payment.
Again, Customers have asserted recoupment and/or setoff rights for the 1990
Rate Case refunds.

                          iv.     TCO'S ENTITLEMENTS TO RECOVERIES FROM ITS
                                  CUSTOMERS

         The levels of recoveries by TCO from its Customers of previously
unrecouped gas and non-gas costs and of costs


                                      I-16
<PAGE>   537

incurred to terminate its obligations to upstream pipelines (the "FERC
Receivables") are significant and are the subject of contested proceedings
pending before FERC.  Further discussion of Customer Claims, FERC regulatory
issues, and the Customer Settlement Proposal is contained in Section IV of this
Disclosure Statement.

                          d.      IRS CLAIM

         The Internal Revenue Service filed against TCO and Columbia a priority
income tax liability Claim for approximately $553 million.  On October 12,
1994, the Bankruptcy Court entered an order, which has become final, approving
a settlement agreement between TCO, Columbia (and its other subsidiaries which
comprise the consolidated tax reporting group) and the IRS resolving all
pre-petition priority tax claim issues.  Under the settlement agreement and in
accordance with the Tax Allocation Agreement, which is expected to be assumed
by TCO under the Plan, TCO is obligated to pay the IRS' Allowed Claim of $134.6
million together with interest thereon computed at the rate of 4.5% from July
31, 1991 (or approximately $29.6 million as of December 31, 1995).  However,
because of deductions and interest refunds which TCO is entitled to receive in
post-petition years, the net cost to TCO of the IRS settlement is approximately
$84.5 million including interest.  Further discussion of the IRS Claim and
Settlement is contained in Section V.C.5 of this Disclosure Statement.


                                      I-17
<PAGE>   538

                          e.      ENVIRONMENTAL LIABILITIES

         TCO, like most other pipeline companies, is subject to environmental
liabilities arising from its past operations and will incur future costs to
bring all of its operations into compliance with current environmental
protection standards.

         On November 16, 1994, the Bankruptcy Court approved three settlements,
between TCO, the EPA, the Kentucky Natural Resources and Environmental
Protection Cabinet and the Pennsylvania Department of Environmental Resources,
which settlements address TCO's environmental assessment and remediation
obligations and/or penalty obligations under Federal law and the laws of
Pennsylvania and Kentucky.  These Settlement Agreements are binding on
Reorganized TCO, and contemplate a long-term program of assessment and
remediation, the costs of which Reorganized TCO will incur.  Further discussion
of environmental issues is contained in Section V.C.7 of this Disclosure
Statement.

                 5.       PROPOSED SETTLEMENTS WITH PRODUCERS AND CUSTOMERS

         From the early months of these Chapter 11 Cases, TCO and Columbia have
endeavored to identify and settle their differences with Producer Creditors and
TCO's Customer constituency.

         These efforts have included:

                 -        extensive, comprehensive valuations of the TCO Estate
                          by the Debtors' financial advisors;

                 -        numerous meetings with Producer and Customer groups
                          wherein TCO explained its views and judgments on
                          values available to satisfy Creditor


                                      I-18
<PAGE>   539

                          Claims, and the likely allowable magnitude of those
                          claims;

                 -        the Filing of the 1994 Plan; and

                 -        TCO's voluntary deferral of further proceedings on
                          the 1994 Plan pending further discussions with
                          Producers, mediation sessions in the Claims
                          Estimation Procedures, and continuing settlement
                          efforts with Customers.

Substantial progress has been achieved in reaching settlements with Producers
and Customers in recent months.

                          a.      PRODUCER SETTLEMENT AND SETTLEMENT OFFER

         After years of effort to find a common ground for resolving the
calculation of Producer Claims and determining the level of asset values
available to satisfy those Claims, TCO, Columbia, and a number of the largest
Producer Creditors representing in the aggregate over 80% in amount of TCO's
proposed Settlement Values for Producer Claims (the "Initial Accepting
Producers")2 have reached agreements in principle, subject to documentation and
subject to confirmation of the Plan (the "Producer Settlement") which form the
basis for the treatment of Producers in this Plan.  That agreement provides for
the Initial Accepting Producers' Claims to be allowed in a total amount of
$1.327 billion, with an expected payout of $962.3 million and a minimum payout
of $914.2 million.

         The Producer Settlement and the settlement offer embodied in the Plan
are based on a settlement concept the key features


- --------------------
(2)      TCO anticipates filing a list of the Initial Accepting Producers,
         together with a copy of the Initial Accepting Producers' Settlement
         Agreement with the Court shortly.


                                      I-19
<PAGE>   540

of which include (i) settlement offers to all Producers of Settlement Values
for their Claims, (ii) settlements, conditioned upon consummation of a TCO Plan
supported by Columbia, that would contain a target payout of 72.5% of Allowed
Producer Claims and would guarantee at least 95% of such target payout, (iii)
some sharing between settling Producers and TCO of the risk that non-settling
Producers would achieve Allowed Claims at higher levels than their Settlement
Values, and (iv) a guarantee by TCO and Columbia in the Plan that non-settling
Producers would also receive at least the same percentage payout as the
settling Producers on their Allowed Claim when ultimately liquidated.


         Under the Producer Settlement, TCO, Columbia and the Initial Accepting
Producers have agreed to the allowable amounts of the Initial Accepting
Producers' Claims.   Further, each Initial Accepting Producer has agreed to
support TCO's proposed Settlement Values (or any other amount agreed to by TCO
and such other (unaffiliated) Producers and approved by the Bankruptcy Court),
for the allowable amounts of all other Producer Claims, and to otherwise
support the Plan.  Each Initial Accepting Producer has also agreed to support
any adjournments requested by TCO, Columbia and the Creditors' Committee of the
ruling on the Intercompany Claims Litigation.

         In consideration of the foregoing agreements, TCO and Columbia have
agreed to file Plans incorporating their agreement with Initial Accepting
Producers and to use their best efforts





                                      I-20
<PAGE>   541

to confirm and consummate those Plans prior to year-end, but in any event not
later than June 28, 1996.

         The Plan proposes specific, individual Settlement Values for all
Producer Claims that have not already been settled or Allowed.  These proposed
quantifications of Claims for allowance were developed by TCO in consultation
with the Creditors' Committee based on a comprehensive methodology which
reflects the application of various assumptions and principles on a consistent
basis for all such Claims, generated with due consideration of the Claims
Mediator Report, and with consideration of significant Claim- specific issues
where appropriate.  If all Producers accept their Settlement Values, the Plan
assures distributions of nearly $1.2 billion in cash to holders of Producer
Claims.

         By accepting their proposed Settlement Values, Producers agree to
compromise certain positions they might otherwise take in order to end
litigation and receive a prompt distribution on what TCO and the Initial
Accepting Producers believe to be appropriate settlement levels for their
Claims.  Effectiveness of the Plan is conditioned, among other things, on the
acceptance by not less than 90% in amount of Producer Claims (based on the
proposed Settlement Values, and including the Initial Accepting Producers) of
their proposed Settlement Values.

         The proposed settlement contemplated by the agreement with Initial
Accepting Producers resolves numerous controversies





                                      I-21
<PAGE>   542

which have arisen in the TCO and Columbia Reorganization Cases and which have
delayed the realization by Creditors of their recoveries from both Estates.
Absent settlement, the Claims Estimation Procedures appear likely to continue
to be a prolonged, contentious, costly and uncertain of outcome.

         If Producers and other Creditors fail to accept the Plan, they
ultimately risk dilution of their payout as a result of continued litigation
with other Creditors and with TCO, as well as substantial delays in receiving
the payout.  Further discussion of the treatment of Producer Claims is set
forth in Sections II and VII of this Disclosure Statement, and in the Plan
itself.

                          b.      THE PROPOSED CUSTOMER SETTLEMENT

          TCO has negotiated with a substantial group of its Customers
(including affiliated companies), and various of their state regulatory
agencies and consumer advocate offices, an agreement embodying a global
resolution of Customers' Claims, and TCO's regulatory recovery claims against
Customers.  The Customer Settlement Proposal is being presented to the FERC for
approval, concurrently with the Filing of the Plan.  TCO expects that FERC will
approve those aspects of the agreement subject to its jurisdiction, which
approval will in turn be conditioned on Bankruptcy Court approval of those
aspects of the agreement subject to its jurisdiction, and on confirmation of
this Plan.

         Pursuant to the settlement, disputes over essentially all transition
cost recoveries, including dozens of active FERC





                                      I-22
<PAGE>   543

proceedings are resolved, with the TCO Estate receiving hundreds of millions of
dollars of payments from Customers.  In turn, TCO's Plan offers all Customers,
whether or not they participated in the negotiations, the following treatment
of their Claims in bankruptcy:

              (i) payment in full of post-petition flow-through refunds when
received by TCO;

             (ii) payment in full of their allocable share of the $3.3 million
trust fund balance with interest in accordance with applicable FERC orders;

            (iii) payment of their allocable share of eighty percent (80%) of
the pre-petition portion and one hundred percent (100%) of the post-petition
portion, of the 1990 Rate Case settlement;

             (iv) payment of a total of $52.5 million in compromise and
settlement of BG&E Claims;

              (v) payment of all other pre-petition Refund Claims in cash at
the rate of eighty percent (80%) of the Allowed Claim amounts; and

             (vi) payment of $1.3 million to the current members of the
Customers' Committee in full satisfaction of all costs incurred in connection
with the Reorganization Case from the post-reorganization income of TCO.

         In consideration of the proposed settlement of regulatory issues by
TCO, Accepting 3.2 Claimants must agree to (i) waive all further Claims and
terminate all litigation relating to those settled Claims, including recoupment
and setoff litigation





                                      I-23
<PAGE>   544

and their participation in the Intercompany Claims litigation and (ii) pay
their pro-rata portion of the settled amounts of FERC Receivables to TCO as
approved by FERC.

         In order for the proposed treatment to be effective, a majority in
number and two-thirds in dollar amount of the Claims of Customers entitled to
vote and who do vote in Class 3.2 must accept their treatment under the Plan,
the Plan must be confirmed, and FERC must have approved the matters submitted
to it relating to the settlement agreement.

         Those Customers that refuse to accept the Plan's proposed treatment
are categorized as Dissenting 3.2 Claimants under the Plan and will be entitled
to continue to litigate all issues, but to the extent they fail to obtain a
priority through litigation, will be paid 72.5 cents on the dollar on their
Allowed Claims.  TCO does not believe that its exposure to Dissenting 3.2
Claimants, if any, will be material.  Further discussion of the treatment of
Customer Claims is set forth in Sections II, IV and VII of this Disclosure
Statement, and in the Plan itself.

                          c.      OTHER UNSECURED CLAIMS

         Holders of all other Unsecured Claims (other than Columbia) will be
paid in cash 72.5% of their Allowed Claims, unless such Claims are Allowed in
amounts which do not exceed $25,000 in which case they will receive one hundred
cents on the dollar of their Allowed Claims.  That portion, if any, of the
payment on Disputed Class 3.4 Claims (General Unsecured Claims) in excess





                                      I-24
<PAGE>   545

of 72.5% of the originally proposed Allowance Amount may, at TCO's option with
Columbia's consent, be paid in non-cash consideration with an equivalent market
value.

                          d.      THE COLUMBIA UNSECURED CLAIM

         The Columbia Unsecured Claim shall be Allowed as Filed, and shall
receive the lower of the final distribution percentage received by Allowed
Class 3.3 (Producer) Claims and 72.5%.   Columbia may utilize all or any
portion of the distribution on its Unsecured Claim to meet its guaranty
obligations under the Plan.

                 6.       THE CORNERSTONE OF THE TCO PLAN:  THE COLUMBIA
                          OMNIBUS SETTLEMENT

         The Plan is premised on an omnibus settlement proposal by Columbia
providing, in consideration of (a) the retention by Columbia of the equity of
Reorganized TCO, (b) the settlement of litigation over the liquidation of the
Producer claims of the Initial Settling Producers, Customer Claims and of
certain other Disputed Claims, and (c) settlement of the claims raised or which
could have been raised in the Intercompany Claims Litigation and various other
claims and disputes between TCO's Creditors, TCO and Columbia, for:

                 (i)   the monetization for the benefit of TCO's Creditors
         (other than Columbia) of the amounts necessary to fund the Plan;

                (ii)   the guaranty of payment of distributions to TCO's
         Creditors as provided under the Plan (excluding assumed obligations);





                                      I-25
<PAGE>   546

               (iii)   the Columbia Customer Guaranty;

                (iv)   avoidance of the delay in and diminution of Creditors'
         recoveries from the Estate consequent to (i) a waiver of TCO's right to
         impose a Bar Date on most pre-petition Claims against the Estate by
         public environmental enforcement agencies, and (ii) the assumption of
         such Claims and certain other pre-and post-petition Claims by
         Reorganized TCO; and

                 (v)   satisfaction of a portion of the Columbia Secured Claim
         with new secured debt securities of TCO (in lieu of cash) and the
         contribution of the balance of that Claim to TCO's equity in order to
         facilitate reorganization.

              The components of the total consideration paid by TCO and
Columbia cannot be expressed in precise dollar amounts, but Columbia believes
they constitute, in the aggregate, a fair valuation of TCO's Estate, a
reasonable and fair settlement of the Intercompany Claims and all other claims,
disputes and issues related to these cases (except those expressly reserved in
the Plan), and reflect substantial additional consideration from Columbia to
facilitate the reorganization of both Debtors.

         The Plan is also predicated on TCO's and Columbia's belief that it is
in the best interest of both estates that TCO be reorganized without awaiting
final adjudication of the Intercompany Claims Litigation and the litigation
over Producer Claim amounts.





                                      I-26
<PAGE>   547

         By offering proposed Settlement Values to all Producers, developed
according to a consistent and comprehensive methodology believed by TCO and its
professional advisors to fairly reflect the appropriate outcome of such Claims
litigation, the Estate and its Creditors will be saved the substantial cost of
continued litigation, and the prompt emergence of both Debtors will permit
substantial cash distributions to occur.

         C.      DISTRIBUTIONS UNDER THE PLAN

                 The Plan, if accepted by Creditors including all Producer
Creditors, provides for:

         (a)     payments in cash in full of all Allowed Priority Claims (other
than the IRS Claim which may be paid over time as permitted by the Bankruptcy
Code), all Secured Claims held other than by Columbia, and administrative
expenses;

         (b)     satisfaction of Columbia's Secured Claims with new secured
debt securities of Reorganized TCO (secured by substantially all of TCO's
assets) and Columbia's retention of Reorganized TCO as a wholly-owned
subsidiary.

         (c)     cash payment in full of Allowed Unsecured Claims of (or
voluntarily reduced to) $25,000 or less;

         (d)     cash payments or tracker credits for the Refund Claims of
Accepting 3.2 Claimants; and

         (e)     cash payments of 72.5% of all other Unsecured Claims,
including large contract rejection and other Producer Claims.  Further
discussion of the amount and timing of distributions to





                                      I-27
<PAGE>   548

Creditors under the Plan is contained in Section II and VII of this Disclosure
Statement, and in the Plan itself.

         D.      CONDITIONS

         Confirmation of the Plan is subject to certain conditions which must
be satisfied or, if waivable, waived.  Further discussion of the conditions is
contained in Sections VII and VIII of this Disclosure Statement.  Further, if
the Effective Date has not occurred by January 31, 1996, Creditors in Class 3.3
and 3.4 are entitled to receive a supplemental interest payment, retroactive to
January 1, 1996, accrued through the ultimate Effective Date, on the actual
distributions payable on their allowed claims.

         E.      CONCLUSION

         The Plan offers substantial payouts to Producers for the resolution of
outstanding disputes and the buyout of burdensome long-term gas supply
contracts.

         In addition, by permitting the effectuation of the Customer Settlement
proposal, years of contentious, burdensome and costly litigation primarily
relating to the impact on TCO's business and its Customers of the gas costs
relating to rejected or previously terminated Producer contracts will come to
an end.  The Refund Claims of Customers, as compromised, will be paid, and the
TCO Estate will receive the benefit of certainty as to the recoverability of
substantial assets.  This settlement benefits the public interest, as well as
facilitating this





                                      I-28
<PAGE>   549

reorganization and maximizing the recoveries available to creditors.

         The Columbia Omnibus Settlement fully monetizes TCO's going-concern
value and ends litigation over the Intercompany Claims and provides other
economic benefits of a material nature to TCO's Creditors.  In addition, it
offers a formulation whereby Columbia's own reorganization can proceed for the
benefit of thousands of public and private creditors and shareholders.

         In sum, the Plan offers a comprehensive solution to the bankruptcy
proceedings which have been pending for nearly four years.  It is hoped that
the Plan will be acceptable to all Creditors as a prompt, cost efficient,
balanced and practical financial solution for all concerned.





                                      I-29
<PAGE>   550

Isaac Arnold, Jr., et al.; Elf Aquitaine Operating, Inc.; Energy Development
Corporation; Meridian Oil Production, Inc.; Samedan Oil Corporation; Adobe
Resources Corporation; Cherokee Resources Incorp.; Jones O'Brien, Inc.; Rebel
Oil; Thomas J. Wyatt; Black Hawk Oil Company, et al.; Unocal Exploration
Corporation; Exxon Company USA; Koch Industries, Inc.; Union Pacific Resources
Co.; Equitable Resources Energy Co.; Phillips Production Company; Ashland
Exploration, Inc.; R.H. Adkins, Agent; R.H. Adkins d/b/a Eldon Gas Company;
R.H. Adkins d/b/a Stockton Gas Company; R.H. Adkins d/b/a Edon Gas Company;
Ronald H. Hooser, Trustee, and Tudor Gas Company; Ethel Gas Company; R.F.
Turley, Agent; Freeman Gas Company and Pate Gas Company; Freeman Gas Company,
Pate Gas Company and Tincher Gas Company; Tincher Gas Company; Charley's Branch
Gas Company, Copley Gas Company, Leestock Gas Company, Leet Gas Company,
Stockton Gas Company; Houston Gas Company; Ranger Gas Company; DotsAdkins Ageon
Branch Gas Company; Lambert Gas Company, Laurel Hill Gas Company; Laurel Hill
Gas Company; Edsel Gas Company; Hamilton Creek Gas Company; Magnolia Gas
Company, North Fork Gas Company, Etta Gas Company; Hall Gas Company; R.L.
Hooser Gas Account; Pigeon Creek Gas Company; R.H. Adkins Gas Department;
Ferdinand Gas Company; Burchett and Adkins; Harts Gas Company, Watson Gas
Company; Dean Gas Company; Starcher Gas Company; Hoover Gas Company; Fry Gas
Company, Workman Gas Company; Morris Gas Company; Mahue Construction Company;
R.H. Adkins, Toney Gas Company; Peter M. Mark, Ronald L. Hooser; R.L. Hooser;
Linville Gas  Company, R.H. Adkins, Agent; Leet Gas Company; Alfred Knobler Gas
Company; William Allen & Lewis D. Jessie, Sr.; Angerman Associates, Inc.,
Agent; Atlas Energy Group, Inc., Agent; Atlas Energy Group, Inc., agent
successor by merger to Lordstown Energy, Inc.; Atlas Energy Group, Inc., Agent;
Atlas Resources, Inc., agent; Base Petroleum; Blue Creek Gas Company, Agent;
Joe Rubin & Sons, a partnership; Rubin Brothers, a partnership; Clay Gas
Company; Lois Bronson Agent for C.S. Black, Trustee; William E. Burchett;
William S. Burkland; Calvert Family Agency; Horace K. Clavert, agent for Adams
Gas Company and Burks Gas Company; Calvert Family Agency and Horace K. Calvert,
agent for A.F. Morris; Horace K. Calvert, agent for Sweetland Burns & Reyolds
(aka E.B. Curry); Cameron Oil and Gas Company; Chesterfield Energy Corporation,
Agent/Jen Associates; Jen Associates; Clint Hurt & Associates, Inc.; Enterprise
Energy K; Consolidation Coal Company, Ray Brothers Corporation, Ray Brothers
Drilling Company; James S. Ray, Agent; Continental Petroleum Company, Robert
Jones; Robert Jones, Agent d/b/a Continental Petroleum Company (Trio); Robert
R. Jones, Agent d/b/a Rockwell Petroleum Company; Continental Reserves Oil
Company; Eastern American Energy Corporation, Agent; J&J Enterprises, Inc.;
Apollo, Ray Resources, Great Western; Edisto/NRM; Elahs Gas Company, Inc.,
Agent; Jack C.  Dyer, Sr. and Jack C. Dyer, Jr.; d/b/a D&D Gas Company; Jamar
Land Company, Inc.; Elahs Gas Company, agent for Badger Oil & Gas Company; EMAX
Oil Company, Agent; Five Star Gas Company, Agent; John W. Stone and Charles O.
Hardman d/b/a Massa





                                      I-30
<PAGE>   551

Oil Company; John W. Stone; Bruce Foster; D. Richard Fox,
Individually and as Agent; D.G. Haney, Inc., Agent; Huntington-Oklahoma Oil
Company; Hunt-Oklahoma Oil Company and Midway City Gas Company; King Gas
Company; The Jack Company, successor in interest to J&J Enterprises, Inc.;
Indiana Area School District and Plum Production, Inc., by and through their
agent The Jack Company; Plum Production, Inc., by and through its agent The
Jack Company; Jackson Well Service, Agent; Johnson Exploration Company; Thomas
A. Leeper; Liberty Oil & Gas Corporation, Agent; D.C. Malcolm, Inc., Agent;
Pilot Oil & Gas; D.C. Malcolm, Inc., successor to Geosonic, Inc.; McCabe Land
Company; Robert E. O'Neill, Trustee for Robert E. O'Neill Living Trust; PIP
Petroleum Corporation; Peake Operating Company, Agent; Presidio Oil Company;
Betty Quick, Agent; C.E. Richner, Agent; R.E. Riley & Company; C.E. Richner,
Agent; Sigma Corporation; Boyd Oil & Gas, Inc.; Gilbert Exploration Co.;
Gilbert Imported Hardwoods, Inc.; Gilbert Exploration Company, Inc.; Grey Eagle
Construction Company; C.F. Shewey; C.F. Shewey, Agent; Rubin Resources, Inc.,
Agent; Blue Creek Gas Company; Joe Rubin & Sons, a partnership; Estate of Alton
Skinner; Clyde Smith, Agent; Bill & Jessie, Inc., as successor to William H.
Smith and Jessie H. Smith; Synder-Armclar Gas Co., Agent; Southeastern Gas
Company; Cumberland Gas Company; Michael L. Thomas; Tri-Country Oil & Gas,
Inc., Agent; U.S. Energy Development Corp., Agent; U.S.  Energy Development
Corp., individually and as agent for Oilmark and Company, Inc., U.S. Energy
Development Corp., successor to American Penn Energy Inc., and as agent for
American Penn Energy Inc.





                                      I-31
<PAGE>   552



II.      OVERVIEW OF THE PLAN

         THE FOLLOWING IS A BRIEF OVERVIEW OF CERTAIN MATERIAL PROVISIONS OF
THE PLAN.  THIS OVERVIEW IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO THE
PROVISIONS OF THE PLAN, A COPY OF WHICH IS ATTACHED HERETO AS EXHIBIT 1.
ADDITIONALLY, SECTION VII, "PLAN TREATMENT OF CLAIMS AND SUMMARY OF OTHER PLAN
PROVISIONS," OF THIS DISCLOSURE STATEMENT CONTAINS A DETAILED NARRATIVE
DESCRIPTION OF THE TREATMENT OF CLAIMS AND MECHANICS FOR IMPLEMENTATION UNDER
THE PLAN.

         A.  REORGANIZED TCO

         Under the Plan, Reorganized TCO will remain a wholly-owned subsidiary
of Columbia, will continue to operate as a transporter and storer of natural
gas, and will retain ownership of its extensive network of pipelines, storage
and related facilities.  The Plan does not provide for changes to TCO's current
management other than in the ordinary course of business.  See Section VII.I.4,
"Corporate Governance, Directors and Officers."

         B.  SUMMARY OF DESCRIPTION OF CLASSES AND DISTRIBUTIONS

         The Plan contemplates the distribution to TCO's Creditors of value of
approximately $3.9 billion, a settlement of the Intercompany Claims Litigation,
settlement of Customer Claims, and settlement of litigation over Producer
Claims and certain other matters resolved by the Columbia Omnibus Settlement.
All distributions to Creditors, other than to Columbia in respect of the
Columbia Secured Claim and to certain Rejecting Producers and holders of
Disputed General Unsecured Claims in respect of a portion of their Claims, will
be in cash to be provided by Reorganized TCO with such payments guaranteed by
Columbia.





                                      II-1
<PAGE>   553

         The Plan proposes a comprehensive settlement with Customers of their
Claims against TCO and of certain of TCO's recovery rights under applicable
FERC regulations.  The proposal is consistent with the agreement reached
between TCO and a significant number of its Customers and affected State Public
Service Commissions and Consumer Advocates offices after extended negotiations,
and which has been submitted to FERC for approval.

         The Plan proposes a global settlement with Producers as well.  A
Settlement Value is proposed for each Producer Claim in the amount that the
Claim was previously Allowed, if applicable, or in the amount at which TCO
agrees the Claim should be Allowed.  If a Producer accepts the Settlement Value
proposed for its Claim, such Claim will, subject to Bankruptcy Court approval,
be Allowed at its Settlement Value, in Class 3.1 if the Settlement Value is not
more than $25,000, and if more than $25,000, in Class 3.3 or Class 1.2.

         Additionally, an Allowance Amount is proposed for each General
Unsecured Claim in the amount that the Claim was previously Allowed, or if
applicable, or in the amount at which TCO agrees the Claim should be Allowed.
If a holder of  a Disputed General Unsecured Claim accepts the Allowance Amount
proposed for its Claim, such Claim will, subject to Bankruptcy Court approval,
be Allowed at its Allowance Amount, in Class 3.1 if the Allowance Amount is not
more than $25,000, and in Class 3.4 if the Allowance Amount is more than
$25,000.





                                      II-2
<PAGE>   554

         If the Plan is not consummated, any voluntary reduction made to a
Claim, by acceptance of a Settlement Value, or an Allowance Amount, or
otherwise, may, at the option of the holder of such Claim, be nullified.

         The following table summarizes each category of Claims and Interests
and indicates, where appropriate, the classification of Claims and Interests,
the estimated amount at which Claims in each Class will be Allowed, and the
percentage distribution for each Class based on those estimates.

         The estimated Claims amounts in the following table are as of an
assumed Effective Date of December 31, 1995.(1)  Such amounts constitute TCO's
present estimates of the amounts of such Claims upon resolution of all Disputed
Claims and reflect the Settlement Values for Producer Claims and Allowance
Amounts for unliquidated General Unsecured Claims discussed above.  See Section
VII.A.2.c.(iv) "Plan Treatment of Claims and Summary of Other Plan Provisions".
The estimated amounts for Secured Claims include, where appropriate, estimates
of accrued post-

______________________

(1)      All references to the Effective Date in this Disclosure Statement
         assume an Effective Date of December 31, 1995.  The actual Effective
         Date may be different from the assumed Effective Date set forth herein
         for a variety of substantive and scheduling reasons, including the
         ultimate date set by the Bankruptcy Court for the Confirmation hearing
         and the date upon which conditions to the Effective Date have been
         satisfied or, if waivable, waived.  See Section VII.B, "Conditions to
         the Effective Date".  TCO believes that changes to the Effective Date
         through June 28, 1996 will not materially adversely impact on the
         distributions to Creditors under the Plan.





                                      II-3
<PAGE>   555

petition interest on pre-petition secured indebtedness through the Effective
Date.

         The total amount of all Claims Filed against TCO's Estate is
materially in excess of the total amount of Allowed Claims reflected in the
table below and assumed in the development of the Plan. Many Claims have been
Allowed but virtually all Producer Claims are unliquidated, although the
Initial Accepting Producers have agreed to Settlement Values for their Claims,
subject to the approval of the Bankruptcy Court.  Based upon its review of the
Claims as Filed and the impact on Producer Claims of the Claims Mediator
Report, TCO believes that many of the Claims were Filed in amounts that are
well in excess of the amounts that will ultimately be Allowed and that the
Disputed Claims are likely to be Allowed at lower amounts in the ranges
projected below.

         The estimates of Allowed Claims and distributions  reflected in the
table below assume that each Claim for which a Settlement Value is proposed
will be Allowed at its Settlement Value, each Claim for which an Allowance
Amount is proposed will be Allowed at its Allowance Amount, and that all other
Claims will be Allowed at amounts which approximate TCO's adjusted book
amounts.  However, the level at which Claims are ultimately Allowed could be
greater or less than those assumed amounts.  See Section VIII, "Risk Factors".

         This summary describes distributions to the holders of Claims which
are Allowed as of the Effective Date except where





                                      II-4
<PAGE>   556

otherwise indicated.  Claims which are not Allowed Claims on the Effective Date
will be paid on a quarterly basis as such Claims become Allowed, except that
Professional Claims will be paid by Reorganized TCO within ten (10) days of
Allowance and the IRS Claim will be paid as set forth in the table below.  A
portion of the distribution for Allowed Producer Claims may be paid on the
thirtieth day after the Final Allowance Date.  See Section VII.D.1,
"Distributions on Claims."

         Class 3.1 Claims and Class 4 Claims are unimpaired and, consequently,
do not vote on the Plan.

         Annexed to this Disclosure Statement as Exhibit 2 is the Payout
Analysis Reflecting Emergence at December 31, 1995 (the "Payout Analysis").
The analysis sets forth the estimated level of distributions under the Plan for
all Claims, classified and unclassified, and is premised upon the treatment of
Claims provided herein, as well as the fulfillment of the numerous assumptions
set forth in this Disclosure Statement.





                                      II-5
<PAGE>   557

        TABLE OF SUMMARY DESCRIPTION OF CLASSES AND THEIR DISTRIBUTIONS

<TABLE>
<CAPTION>
DESCRIPTION AND ESTIMATION                                     DESCRIPTION OF DISTRIBUTION
OF CLAIMS AND INTERESTS                                        UNDER THE PLAN    
- --------------------------                                     ------------------
<S>                                                            <C>
1.  UNCLASSIFIED CLAIMS
    -------------------

PROFESSIONAL CLAIMS: Claims for unpaid fees and                Each holder of an Allowed Professional Claim
expenses of Professionals retained during TCO's                will receive cash in the amount of such Claim
Reorganization Case.                                           on the later of the Effective Date or the tenth
                                                               day after the Claim becomes Allowed.  Post-
         ESTIMATED CLAIMS AMOUNT:                              petition interest will be payable, to the
         $19.8 million                                         extent Allowed by the Bankruptcy Court, on
                                                               amounts held back by order of the Bankruptcy
         DISTRIBUTION: 100%                                    Court with respect to interim fee applications.
                                                               Professional Claims are unimpaired.




POST-PETITION OPERATIONAL CLAIMS: Claims                       Each Post-Petition Operational Claim will be
incurred by TCO in the ordinary course of its                  assumed by Reorganized TCO and paid in the
business post-petition, including post-petition                ordinary course of business according to the
Refund Claims and FERC-mandated post-petition                  terms of the transaction giving rise to such
interest thereon, tax obligations, trade vendor                Claim.  Post-Petition Operational Claims are
and supplier obligations and obligations under                 unimpaired.
contracts and leases, but excluding
Environmental Claims included in Class 4.1.

         ESTIMATED CLAIMS AMOUNT:
         Not applicable

         DISTRIBUTION: 100%

ASSUMED EXECUTORY CONTRACT CLAIMS:  Claims                     Each holder of an Allowed Assumed Executory
arising from the assumption by TCO of pre-                     Contract Claim will receive cash in the amount
petition executory contracts, including the Tax                of such Claim on the Effective Date or such
Allocation Agreement, and unexpired leases                     earlier or later time as may be authorized by
pursuant to section 365(b)(1) of the Bankruptcy                the Bankruptcy Court.  Any Assumed Executory
Code.                                                          Contract Claim that becomes an Allowed Claim
                                                               after the Effective Date will be paid in full
         ESTIMATED CLAIMS AMOUNT:                              in cash on the thirtieth day after the end of
         $35.3 million                                         the Calendar Quarter in which such Claim
                                                               becomes Allowed.  Assumed Executory Contract
         DISTRIBUTION: 100%                                    Claims are unimpaired.


</TABLE>




                                      II-6
<PAGE>   558

<TABLE>
<S>                                                            <C>
U.S. TRUSTEE'S FEE CLAIMS:  The quarterly                      The U.S. Trustee's Fee Claims which remain
statutory fees owed to the United States                       unpaid and outstanding as of the Effective Date
Trustee.                                                       will be paid in full in cash on the Effective
                                                               Date.  U.S. Trustee's Fee Claims are
         ESTIMATED CLAIMS AMOUNT:                              unimpaired.
         $5,000

         DISTRIBUTION: 100%


MISCELLANEOUS ADMINISTRATIVE CLAIMS:  All                      The Miscellaneous Administrative Claims that
Administrative Claims not included in any other                remain unpaid as of the Effective Date will be
category of unclassified Claims, including (i)                 assumed by Reorganized TCO and paid in the
contingent indemnification Claims of officers,                 ordinary course of business according to the
directors and employees of TCO, including                      terms of the transactions or events giving rise
indemnification Claims by (a) employees in                     to such Claims.  Miscellaneous Administrative
connection with pre- and post-petition personal                Claims are unimpaired.
injury and property damage actions brought
against them by third parties and (b) officers
and directors in connection with stockholder
class actions, (ii) post-petition personal
injury and property damage Claims, and (iii)
Claims arising pursuant to performance bonds
issued on behalf of TCO post-petition.

         ESTIMATED CLAIMS AMOUNT:
         Not applicable

         DISTRIBUTION: 100%

ADMINISTRATIVE RECOUPMENT CLAIMS:                              If any Administrative Recoupment Claim shall be
All Recoupment Claims (i.e., Claims of any                     upheld by a Final Order, the holder of such
Dissenting 3.2 Claimant to recoup from TCO or                  Claim shall be paid the Allowed amount of such
Reorganized TCO any Refund Claims and the right                Administrative Recoupment Claim. Accepting 3.2
of any Dissenting 3.2 Claimant to set off its                  Claimants, pursuant to the Waiver Agreement,
WACOG surcharges against pre-petition Claims)                  waive their Administrative Recoupment Claims.
entitled to administrative priority pursuant to                Administrative Recoupment Claims are
certain orders of the Bankruptcy Court.                        unimpaired.

         ESTIMATED CLAIMS AMOUNT:
         Not applicable (assumes all Customers
         are Accepting 3.2 Claimants)

         DISTRIBUTION: 100%

PRIORITY TAX CLAIMS: Claims attributable to                    Each holder of an Allowed Priority Tax Claim
income taxes, property taxes and any other                     will receive cash in the amount of such Claim,
taxes entitled to priority in payment pursuant                 on the Effective Date, if then Allowed, or, if
to section 507(a)(8) of the Bankruptcy Code.                   not then Allowed, on the thirtieth day after
                                                               the date on which such Claim becomes


</TABLE>

                                      II-7
<PAGE>   559

<TABLE>
<S>                                                            <C>
         ESTIMATED CLAIMS AMOUNT:                              Allowed, provided, however, that the IRS Claim shall
         $137.3 million                                        be paid in quarterly installments commencing three
                                                               months from the Effective Date with interest at
         DISTRIBUTION: 100%                                    the rate set forth in the IRS Settlement
                                                               Agreement, unless Reorganized TCO, with the
                                                               consent of Reorganized Columbia, exercises its
                                                               right to prepay such Claim without premium or
                                                               penalty.  Any portion of any such Claim that
                                                               represents an obligation to pay post-petition
                                                               interest allocable to TCO under the Tax
                                                               Allocation Agreement or for which TCO is
                                                               required under the Tax Allocation Agreement to
                                                               reimburse Columbia or its other affiliates,
                                                               will be paid by TCO either as an Assumed
                                                               Executory Contract Claim, subject to the
                                                               approval of the Bankruptcy Court, or otherwise
                                                               as an Affiliate Tax Claim.  Priority Tax Claims
                                                               are unimpaired.





EAST LYNN CONDEMNATION OBLIGATION: TCO's                       The East Lynn Condemnation Award will be
obligation to turn over to CNR the funds                       delivered to CNR on the Effective Date.  The
received and held by TCO in trust for CNR for                  East Lynn Condemnation Obligation is
damages arising from the condemnation of the                   unimpaired.
East Lynn Property by the United States,
including income earned by TCO on those funds
through the Effective Date.

         ESTIMATED CLAIM AMOUNT:
         $62.5 million

         DISTRIBUTION: 100%

2.  SECURED CLAIMS
    --------------

CLASS 1.1:  DIP Facility Claims.                               Each Class 1.1 Claim will be paid in full on
                                                               the Effective Date, if then Allowed, or, if
         ESTIMATED CLAIMS AMOUNT:                              not, on the tenth day after such Claim becomes
         $2 million                                            Allowed.  The DIP Facility will terminate by
                                                               its terms on the Effective Date.  Any
         DISTRIBUTION: 100%                                    Deficiency Claim will be treated as an
                                                               Administrative Claim in accordance with Section
                                                               364(c) of the Bankruptcy Code.  Class 1.1
                                                               Claims are unimpaired.


CLASS 1.2:  Secured Producer Claims, consisting                Each holder of an Allowed Class 1.2 Claim will
of Claims arising from pre-petition gas                        receive, on the Effective Date, if then
purchases by TCO to the extent such Claims are                 Allowed, cash equal to the lesser of (i) the
secured by statutory liens.                                    Allowed amount of the Claim, and (ii) the value
                                                               of the collateral as determined by the
         ESTIMATED CLAIMS AMOUNT:                              Bankruptcy Court.  Any Class 1.2 Claim that
         $0                                                    becomes Allowed after the Effective Date will,
                                                               on the thirtieth day after the end of the
         DISTRIBUTION: 100%                                    Calendar Quarter in which such Claim becomes
                                                               Allowed, receive the treatment


</TABLE>

                                      II-8
<PAGE>   560

<TABLE>
<S>                                                            <C>
                                                               described in the preceding sentence.  Any resulting
                                                               Deficiency Claim will be treated in the appropriate
                                                               category of Class 3.  Class 1.2 Claims are
                                                               unimpaired.  Class 1.1 Claims are unimpaired.


CLASS 1.3:  Other Secured Claims not included                  Each holder of an Allowed Class 1.3 Claim will
in Classes 1.1, 1.2 or 2.1, including setoff                   receive, on the Effective Date, if then
Claims permitted under section 553 of the                      Allowed, at the option of TCO, (i) cash in an
Bankruptcy Code.                                               amount equal to the lesser of (x) the Allowed
                                                               Amount of such Claim and (y) the value of the
         ESTIMATED CLAIMS AMOUNT:                              collateral securing such Claim, (ii)
         $163,000                                              reinstatement of the maturity of such Claim and
                                                               the curing of all defaults in connection
         DISTRIBUTION: 100%                                    therewith, or (iii) permission to set off such
                                                               Claim.  Any Class 1.3 Claim that becomes an
                                                               Allowed Claim after the Effective Date will, on
                                                               the thirtieth day after the end of the Calendar
                                                               Quarter in which such Claim becomes Allowed,
                                                               receive the treatment described in the
                                                               preceding sentence.  Any resulting Deficiency
                                                               Claim will be treated in the appropriate
                                                               category of Class 3.  Class 1.3 Claims are
                                                               unimpaired.


CLASS 2.1:  The Columbia Secured Claim,                        On the Effective Date, Columbia will receive in
including costs and post-petition interest at                  respect of the Columbia Secured Claim,
the appropriate interest rate provided in the                  (i) newly issued secured debt securities of
relevant loan documents, calculated as provided                Reorganized TCO having a principal amount
in Exhibit B to the Plan.                                      calculated to provide Reorganized TCO with an
                                                               appropriate funded debt-to-equity ratio as of
         ESTIMATED CLAIMS AMOUNT:                              the Effective Date and (ii) the right to retain
         $1,984 million                                        the stock of TCO, with the remainder of the
                                                               Columbia Secured Claim to be contributed to the
                                                               capital of Reorganized TCO.  The Class 2.1
         DISTRIBUTION: See Description                         Claim is impaired.
         of Distribution


3.  UNSECURED CLAIMS
    ----------------

CLASS 3.1:  Unsecured Claims (other than any                   TCO will pay each holder of an Allowed Class
Customer Regulatory Claim the holder of which                  3.1 Claim in cash or, in the case of a Customer
does not execute a Waiver Agreement prior to                   Refund Claim, in cash or by credit to an
the Effective Date) that are Allowed in amounts                appropriate rate mechanism, on the Effective
that do not exceed $25,000.                                    Date, if the Claim is then Allowed, or, if not
                                                               then Allowed, on the thirtieth day after the
         ESTIMATED CLAIMS AMOUNT:                              end of the Calendar Quarter during which such
         $8.0 million                                          Claim becomes Allowed.  Class 3.1 Claims are
                                                               unimpaired.
         DISTRIBUTION: 100%




</TABLE>

                                      II-9
<PAGE>   561

<TABLE>
<S>                                                            <C>


CLASS 3.2:  GRI Claims and all Customer                        If Class 3.2 accepts the Plan, each
Regulatory Claims not included in Class 3.1.                   holder of an Allowed Class 3.2 Claim that votes
This Class excludes environmental obligations                  to accept the Plan (and thereby agrees to the
and liabilities owed to Customers.  The                        Waiver Agreement) or, not having voted for the
Customer Regulatory Claims include Claims (i)                  Plan, prior to the Effective Date executes a
that are the subject of or are otherwise                       written Waiver Agreement (in either case, an
affected by the Trust Fund Decision, (ii) that                 "Accepting 3.2 Claimant"),  will receive the
arise from the 1990 Rate Case, (iii) for                       following treatment, subject to the applicable
asserted refund rights which are the subject of                provisions of the Customer Settlement Proposal
the BG&E Case and (iv) for other types of                      (i) that to which it is entitled under the
regulatory refunds owed to Customers.  Class                   Trust Fund Decision and any Final Orders in
3.2 Claims include interest in certain                         furtherance thereof, with post-petition
instances as and to the extent described in the                interest in accordance with the FERC Interest
definition of the term "Refund Claim" in the                   Order, (ii) 80% of the pre-petition amount and
Plan.                                                          100% of the post-petition amount to which it is
                                                               entitled under the 1990 Rate Case Settlement
         ESTIMATED CLAIMS AMOUNT:                              with interest as provided in the 1990 Rate Case
         $175.2 million                                        Settlement in full satisfaction of its 1990
                                                               Rate Case Claims, (iii) its allocable share of
         DISTRIBUTION:                                         $52.5 million in settlement of all BG&E Claims
         See Description of Distribution                       and (iv) an amount equal to 80% of the balance
                                                               of its remaining Regulatory Refund Claims.
                                                               Payment will be made in cash or over such
                                                               period of time and in such form as may be set
                                                               forth in the Customer Settlement Proposal or as
                                                               may be appropriate under the FERC Gas Tariff or
                                                               relevant FERC order.  The Waiver Agreement
                                                               provides for (i) the full settlement,
                                                               satisfaction, discharge and termination by the
                                                               Customer of all of its Disputed Refund Claims
                                                               as defined in the Plan, including withdrawal of
                                                               all of its Recoupment Claims and the
                                                               termination, with prejudice, of all litigation
                                                               and litigation rights with respect thereto,
                                                               (ii) an agreement not to object to any of the
                                                               provisions of the Customer Settlement Proposal,
                                                               including the recovery by Reorganized TCO from
                                                               Customers, in accordance with the terms of the
                                                               Customer Settlement Proposal, of certain Order
                                                               No. 636 transition costs, including amounts
                                                               payable under the Plan in respect of certain
                                                               recoverable gas cost Claims, and exit fees to
                                                               be paid by TCO to upstream suppliers to obtain
                                                               their consent to the termination of
                                                               transportation contracts with such pipelines,
                                                               (iii) agreement to the withdrawal, with
                                                               prejudice, of the intervention by the
                                                               Customers' Committee in the Intercompany Claims
                                                               Litigation and, except for the Customer
                                                               Committee's prosecution of its Motion to Unseal
                                                               Judicial Records, to the release of any


</TABLE>

                                     II-10
<PAGE>   562

<TABLE>
<S>                                                            <C>
                                                               rights or interests in any judgment or other
                                                               recovery on account of the Intercompany Claims,
                                                               (iv) withdrawal, with prejudice, of such Customer's
                                                               appeal of the Bankruptcy Court's denial of
                                                               approval of the 1990 Rate Case Settlement and
                                                               (v) the acceptance of the treatment provided
                                                               for Accepting 3.2 Claimants in the Customer
                                                               Settlement Proposal and as described above.  If
                                                               Class 3.2 votes to accept the Plan, each Class
                                                               3.2 Claimant that does not vote to accept the
                                                               Plan and does not execute a written Waiver
                                                               Agreement prior to the Effective Date and each
                                                               holder of a Class 3.2 Claim if the Class does
                                                               not vote to accept the Plan (each, a
                                                               "Dissenting 3.2 Claimant"), will be entitled to
                                                               pursue its Claims by litigation in any
                                                               appropriate forum and will receive that to
                                                               which it may become entitled (i) under Final
                                                               Orders resolving its Recoupment Claims and
                                                               (ii) under the Trust Fund Decision and Final
                                                               Orders in furtherance thereof.  To the extent
                                                               no other priority is allowed by Final Order of
                                                               the Bankruptcy Court, the holder of such Claim
                                                               shall receive cash equal to the 72.5% of its
                                                               Allowed Claim remaining after application of
                                                               the payments made pursuant to clauses (i) and
                                                               (ii) above.  Class 3.2 Claims are impaired.

CLASS 3.3: Producer Claims not included in                     Producers will receive in cash on the Effective
Class 3.1.                                                     Date the Target Distribution Percentage [72.5%]
                                                               of their respective Allowed Claims if all
         ESTIMATED CLAIMS AMOUNT:                              Producers accept their Original Settlement
         $1,627.5 MILLION                                      Values.  If there are Rejecting Producers, then
                                                               the Producer distributions will be subject to a
         DISTRIBUTION (ESTIMATE):                              holdback of 5%.  Accepting Producers will
         72.5%                                                 receive the Initial Distribution Percentage
                                                               [68.875%] of their respective Settlement Values
                                                               on the Effective Date.  Rejecting Producers
                                                               will receive the Initial Distribution
                                                               Percentage of their Allowed Claims if and when
                                                               such Claims are Allowed.  If, after all Claims
                                                               of Producers have been Allowed, disallowed, or
                                                               withdrawn, the Claims of Producers have been
                                                               Allowed in the aggregate at less than the
                                                               aggregate of the Original Settlement Values
                                                               initially proposed for them, (i) holders of
                                                               Allowed Class 3.3 Claims will receive the
                                                               Target Distribution Percentage of their Allowed
                                                               Claims less any amounts previously paid to such
                                                               Producers and (ii) one half of the amount by
                                                               which the actual


</TABLE>

                                     II-11
<PAGE>   563

<TABLE>
<S>                                                            <C>
                                                               distribution to Producers is
                                                               less than the distribution projected for
                                                               Producers (had they all accepted their Original
                                                               Settlement Values) will be distributed pro-rata
                                                               to all holders of Allowed Class 3.3 Claims. If
                                                               the Claims of Producers have been Allowed in
                                                               the aggregate at more than the aggregate of the
                                                               Original Settlement Values proposed for them
                                                               and the sum of the Initial Distribution
                                                               Percentage of the Allowed Class 3.3 Claims plus
                                                               the aggregate of all Allowed Producer Claims in
                                                               Classes 3.1 and 1.2 exceeds 105% of the
                                                               distribution projected for Producers, no
                                                               additional distribution will be made to the
                                                               holders of Allowed Class 3.3 Claims.  If the
                                                               Claims of Producers have been Allowed in the
                                                               aggregate at more than the aggregate of the
                                                               Original Settlement Values proposed for them
                                                               and the sum of the Initial Distribution
                                                               Percentage of the Allowed Class 3.3 Claims plus
                                                               the aggregate of all Allowed Producer Claims in
                                                               Classes 3.1 and 1.2 is less than 105% of the
                                                               distribution projected for Producers, an
                                                               additional distribution will be made to holders
                                                               of all Allowed Class 3.3 Claims, which amount
                                                               will vary depending upon the total aggregate
                                                               Allowed amount of all Producer Claims.  All
                                                               holders of Allowed Class 3.3 Claims will
                                                               receive interest on their distributions if
                                                               distributions to Producers commence after
                                                               January 31, 1996.  All Disputed Class 3.3
                                                               Claims will be resolved by litigation before
                                                               the Bankruptcy Court, or in the Claims
                                                               Estimation Procedures, as appropriate, or by a
                                                               settlement approved by the Bankruptcy Court.
                                                               All distributions to holders of Allowed Class
                                                               3.3 Claims shall be made in cash except that
                                                               Reorganized TCO shall have the option, with the
                                                               consent of Reorganized Columbia, to pay any
                                                               amounts due to any Rejecting Producer in excess
                                                               of 72.5% of the Original Settlement Value
                                                               proposed for such Rejecting Producer's Claim in
                                                               the form of securities of Reorganized Columbia
                                                               having a fair market value equal to the
                                                               distribution that Reorganized TCO has elected
                                                               not to pay in cash.  Class 3.3 Claims are
                                                               impaired.





</TABLE>

                                     II-12
<PAGE>   564

<TABLE>
<S>                                                            <C>
CLASS 3.4:  Unsecured Claims that are not                      Each holder of an Allowed Class 3.4 Claim shall
included in any other Class.                                   be paid 72.5% of its Allowed Claim.  All
                                                               holders of Allowed Class 3.4 Claims will
         ESTIMATED CLAIMS AMOUNT:                              receive interest on their distributions if
         $56.3 million                                         distributions to Creditors commence after
                                                               January 31, 1996.  Distributions to holders of
         DISTRIBUTION (ESTIMATE):                              Allowed Class 3.4 Claims will be made on the
         72.5%                                                 Effective Date, if the Claims are then Allowed,
                                                               or, if not then Allowed, on the thirtieth day
                                                               after the end of the Calendar Quarter during
                                                               which such Claim becomes Allowed.  All
                                                               distributions to holders of Allowed Class 3.4
                                                               Claims shall be made in cash except that
                                                               Reorganized TCO shall have the option, with the
                                                               consent of Reorganized Columbia, to pay any
                                                               holder of a Disputed General Unsecured Claim
                                                               that does not accept its Allowance Amount any
                                                               amounts due to such holder in excess of 72.5%
                                                               of the Allowance Amount proposed for such
                                                               holder's Claim in the form of securities of
                                                               Reorganized Columbia having a fair market value
                                                               equal to the distribution that Reorganized TCO
                                                               has elected not to pay in cash.  Class 3.4
                                                               Claims are impaired.

CLASS 3.5:  Columbia Unsecured Claim                           Reorganized Columbia shall be paid in cash on
                                                               its Allowed Class 3.5 Claim an amount equal to
         ESTIMATED CLAIM AMOUNT:                               the lesser of (a) the same final distribution
         $351 million                                          percentage as holders of Allowed Class 3.3
                                                               Claims ultimately receive or (b) the same final
         DISTRIBUTION (ESTIMATE):                              distribution percentage as holders of Allowed
         72.5%                                                 Class 3.4 Claims ultimately receive.
                                                               Reorganized Columbia shall be paid the Initial
                                                               Distribution Percentage [68.875%] of its
                                                               Allowed Claim on the Effective Date and the
                                                               balance of the distribution, if any, on the
                                                               Final Allowance Date.  Reorganized Columbia
                                                               will receive interest on its distribution if
                                                               distributions to Creditors commence after
                                                               January 31, 1996.  Reorganized Columbia may use
                                                               all or any portion of the distribution that it
                                                               receives on its Allowed Class 3.5 Claim to fund
                                                               its obligations under the Columbia Omnibus
                                                               Settlement.  The Class 3.5 Claim is impaired.





</TABLE>

                                     II-13
<PAGE>   565

<TABLE>
<S>                                                            <C>
4.  ASSUMED CLAIMS
    --------------

                                                               All such Environmental Claims shall survive and
CLASS 4.1:  Environmental Claims, consisting of                be unaffected by the Confirmation Order and
all pre- and post-petition environmental                       will be assumed and paid by Reorganized TCO if
compliance and remediation obligations to State                and when due and payable.  Class 4.1 Claims are
and Federal environmental enforcement and                      unimpaired.
regulatory agencies, including Claims under the
EPA Order, the Pennsylvania Environmental Order
and the Kentucky Environmental Orders, but
excluding all other non-consensual pre-petition
environmental penalty liabilities.

         ESTIMATED CLAIMS AMOUNT:
         Not applicable.

         DISTRIBUTION: 100%

CLASS 4.2:  Condemnation awards payable                        All such obligations shall survive and be
pursuant to the Bankruptcy Court's December 18,                unaffected by the Confirmation Order and will
1992 Order Authorizing TCO to Pay Condemnation                 be assumed and paid by Reorganized TCO if and
Awards Adjudicated Post-Petition Where No Bond                 when due and payable.  Class 4.2 Claims are
Has Been Posted.                                               unimpaired.

         ESTIMATED CLAIMS AMOUNT:
         $227,000

         DISTRIBUTION: 100%

CLASS 4.3:  Contingent Claims arising under or                 On the Effective Date, Reorganized TCO will
related to Claims Filed by the PBGC in                         assume its obligations relating to all employee
connection with employee benefit or pension                    and retiree benefit or pension plans or
plans or programs.                                             programs in existence as of the Petition Date
                                                               in full satisfaction of any and all Claims
         ESTIMATED CLAIMS AMOUNT:                              Filed by the PBGC.  Class 4.3 Claims are
         Not applicable.                                       unimpaired.

         DISTRIBUTION: 100%



CLASS 4.4:  Contingent Claims arising under or                 Class 4.4 Claims shall survive and be
related to Claims Filed by Columbia in                         unaffected by the Confirmation Order and will
connection with TCO's obligation to reimburse                  be assumed and paid by Reorganized TCO if and
Columbia for any payments Columbia is or may be                when due and payable.  Class 4.4 Claims are
required to make on behalf of TCO under surety                 unimpaired.
bonds issued for TCO's benefit.

         ESTIMATED CLAIMS AMOUNT:
         $7,000

         DISTRIBUTION: 100%



</TABLE>

                                     II-14
<PAGE>   566

<TABLE>
<S>                                                            <C>
CLASS 4.5:  Claims of Columbia or any of its                   Claims in Class 4.5 shall survive and be
subsidiaries for any amount owed by TCO under                  unaffected by the Confirmation Order and will
the Tax Allocation Agreement remaining after                   be assumed and paid by Reorganized TCO if and
payment of Assumed Executory Contract Claims.                  when due and payable.  Class 4.5 Claims are
                                                               unimpaired.
         ESTIMATED CLAIMS AMOUNT:
         $0

         DISTRIBUTION: 100%


5.  INTERESTS
    ---------

CLASS 5:  Columbia's Interests, consisting of                  Columbia will receive no distribution in
all of the issued and outstanding common stock                 respect of its Interests.  Class 5 Interests
of TCO.                                                        are impaired.





</TABLE>

                                     II-15

<PAGE>   567

III.     BUSINESS ISSUES

         A.      TCO'S PRE-BANKRUPTCY CORPORATE STRUCTURE AND OPERATIONS; 
                 HISTORICAL INDUSTRY BACKGROUND

         TCO, a wholly owned subsidiary of Columbia, was incorporated in
Delaware in June 1971. The formation of TCO consolidated into one company the
business activities of numerous other Columbia subsidiaries, including wholesale
natural gas sales, storage and transportation. After public notice, the SEC
approved the consolidation, finding that it was "in the public interest."

         TCO operates an extensive natural gas pipeline network and storage
fields in the eastern half of the United States. Its principal place of business
is in Charleston, West Virginia. TCO employs approximately 3,000 people in eight
states and the District of Columbia.

         Prior to the Petition Date, TCO purchased natural gas in the Southwest,
Mid-Continent, Rocky Mountain and Appalachian producing areas for resale to its
wholesale customers. This merchant business has been substantially eliminated
for TCO and other pipelines as of November 1, 1993 by FERC's Order No. 636,
issued April 8, 1992.

         TCO continues to provide interstate natural gas transportation, storage
and related services to hundreds of Customers, including local distribution
companies ("LDCs") (five of which are affiliates), brokers, marketers, producers
and other shippers of natural gas in fifteen states and the District

                                      III-1
<PAGE>   568

of Columbia. TCO's LDC Customers serve more than eight million retail customers.

         TCO also operates a series of underground natural gas storage fields in
New York, Pennsylvania, Ohio and West Virginia, which consist of approximately
3,700 storage wells covering more than 800,000 acres, with total storage
capacity of approximately 600 Bcf.(1)

         Prior to the 1980s, the U.S. natural gas industry was structured in a
tripartite form: gas exploration and production, gas pipeline and gas
distribution.(2) Producers sold gas at or close to the wellhead to pipeline
companies. Pipeline companies transported it to other pipelines or to "City
Gates"(3) where they resold it to LDCs. LDCs transported it locally and resold
it to users within their service areas. Thus, pipeline companies were interstate
transporters and wholesale "merchants"; LDCs were local distributors and retail
"merchants." Neither were significant users of gas. Under this structure,
pipeline companies constituted the predominant market

- ---------------                
(1)    "Bcf" is a volumetric measure representing a billion cubic feet of
       natural gas at standard pressure and temperature. Similarly, "Mcf," where
       used, represents a thousand cubic feet of natural gas at standard
       pressure and temperature.

(2)    Pipeline companies often owned exploration and production properties. As
       a result of regulatory changes in the early 1980s, many pipelines
       (including TCO) transferred such properties to separate affiliates.

(3)    This term refers to the interconnection between a pipeline company and a
       local distribution company system.


                                      III-2


<PAGE>   569

         for producers and virtually the only source of supply for LDCs. (4)
                                                                      
         In 1938, the NGA commenced Federal regulation of the interstate
pipeline segment of the industry by the Federal Power Commission ("FPC", now
known as FERC).(5) The NGA provided for Federal utility-type regulation of the
interstate sale and transportation of gas to ensure "just and reasonable" rates
and required that services and certain facilities be justified by "public
convenience and necessity."

         Until the mid-1980s, with minor exceptions, the FPC and then FERC
accepted and continued (i) the function of pipeline companies as wholesale
merchants, (ii) the requirement that a pipeline have sufficient long-term
supplies to assure customers and the FPC or FERC that it could meet its
certificated service obligations to its customers, (iii) the substantial
dependence of producers on pipeline companies as purchasers of their gas
production and (iv) the dependence of LDCs on pipeline companies as wholesale
suppliers.

         Under the FPC's interpretation of the "just and reasonable" rate
standard of the NGA and the FPC's Purchase Gas Adjustment

- ---------------                                     
(4)    Certain gas "systems," including Columbia's, were partially integrated,
       i.e., in some instances an affiliate within the system was the producer,
       pipeline and/or LDC.

(5)    On October 1, 1977, pursuant to the provisions of the Department of
       Energy Organization Act, Public Law 95-91, Stat. 565 (Aug. 4, 1977) and
       Executive Order No. 12009, 42 Fed. Reg. 46267 (Sept. 15, 1977), the FPC
       ceased to exist and most of its functions were transferred to FERC.


                                      III-3


<PAGE>   570



("PGA") regulations adopted in the early 1970s, (6) pipeline companies could not
"mark up" the price of gas they purchased from producers and were entitled to
recover only their weighted- average cost of gas plus an amount (which included
a fair return on capital) calculated to compensate the pipeline for the
transmission of the gas from the area of production to the relevant market area.
Under the "public convenience and necessity" standard, pipelines were required
to demonstrate, before expanding facilities or services, that the markets to be
served required additional facility investment or service offerings and that
they had under contract (or could obtain) sufficient gas to utilize the new
facilities and services. 

         The typical format for contractual relations between gas production 
companies and gas pipeline companies was, until the advent of the "spot market"
in the mid-to-late 1980s, the "take-or-pay" contract. The seller obligated 
itself, long term, to make gas available from identifiable acreage either up 
to a stipulated quantity or to the extent it was deliverable. The purchaser 
obligated itself to purchase a fixed percentage of such gas or, upon its 
failure to do so, to pay the unit price for the quantities not taken up to
the fixed percentage of deliverability (i.e., the "take-or-pay percentage").
Generally, these take-or-pay payments could be recouped by applying them

- ---------------                                     
(6)      In 1972, the FPC established the PGA mechanism by which pipeline
         companies such as TCO could recover or "track" changes in their cost 
         of purchased gas on a timely basis without the necessity of filing 
         general rate cases under section 4(e) of the NGA.


                                      III-4


<PAGE>   571



(usually for a limited period) to future purchases of gas in excess of the then
applicable take-or-pay percentage.

         B.      EVENTS LEADING TO THE FILING OF TCO'S             
                 REORGANIZATION CASE

                 1.       GAS SHORTAGES AND REVERSAL OF FEDERAL GAS PRICE 
                          POLICIES

         With the expansion of the markets for natural gas following World War
II, interstate pipelines' gas purchase costs began to escalate substantially.
The NGA was then construed to require regulation (both price and non-price) of
wellhead sales by producers into interstate transportation systems. While the
FPC in due course departed from a strict utility-type regulation of such
wellhead prices, the price levels that it did impose greatly reduced the
incentives of gas producers to develop new production for, or to commit
production to, interstate sales.

         In the 1970s, the nation experienced a severe and extended shortage of
natural gas in the interstate market. The principal cause of this shortage was
the low regulated wellhead prices imposed by the FPC on gas purchased by
interstate pipelines such as TCO. This price regulation artificially depressed
interstate gas prices and resulted in great disparities between the prices for
federally regulated interstate natural gas and the prices of alternate fuels and
intrastate natural gas. This price disparity discouraged both the exploration
for and development of natural gas reserves and the commitment of such reserves
by producers to the interstate market. As these price disparities 


                                     III-5
<PAGE>   572

increased, the demand for natural gas far exceeded available supplies,
especially in the interstate market.

         The shortages of natural gas supplies in the interstate market caused
by federal regulatory decisions were exacerbated by an increase in demand for
natural gas brought about by the steep rise in oil prices following the
formation of the OPEC cartel.

         In 1971, several interstate pipelines instituted curtailment plans,
approved by the FPC, to allocate the shortages of natural gas on their systems.
TCO instituted a curtailment plan commencing in 1972. The level of curtailments
grew each year through the winter of 1976-77, when the coldest winter on record
in the eastern United States forced factories, businesses and schools to close
for brief periods for lack of natural gas for both heating and industrial
production. These closings generated a sense of national crisis, which was
responded to by Congressional legislation and internal measures undertaken by
interstate pipelines.

         In 1978, Congress enacted the Natural Gas Policy Act of 1978 ("NGPA"),
which retained the existing regulation of the price of some "old gas," but
created substantially higher maximum lawful prices for "new gas" and certain
categories of old gas. The variations in these higher price levels were intended
to correspond to the relative costs and risks of finding and bringing various
types of undeveloped reserves into production and maintaining production from
depleting reserves. 


                                      III-6
<PAGE>   573

The price for some categories of gas was deregulated almost immediately and
other categories were scheduled for phased price deregulation commencing in
1985.

                 2.       EMERGENCE OF THE GAS "BUBBLE" AND
                          THE EFFECT ON TCO

         After the NGPA was enacted, exploration and production activities
accelerated. Pipelines were now authorized to pay higher prices that provided
producers with the incentive to find and develop more reserves. Pipelines were
thus able to compete with intrastate markets and contracted for large quantities
of additional new, but higher priced, gas in order to cure existing shortages
and to secure future supplies to meet their public service obligations. Both
private and government analysts projected continuing increases in crude oil and
natural gas prices, and the geologic availability of sufficient domestic gas
supplies was questioned. These projections and the pent-up demand for gas by
consuming markets created a seller's market for new gas supplies. In return for
commitments of new or increased gas supplies, producers were able to obtain the
highest permissible pricing formulae, high take-or-pay levels, and maximum
protection against future contingencies.

         The NGPA achieved its objective of eliminating gas shortages within a
few years. Gas supplies available to the interstate market increased
substantially, while high prices operated to reduce the demand for natural gas.
Supplies of natural gas soon exceeded market requirements for gas. On a blended
cost basis, natural gas supplies also became more 

                                      III-7
<PAGE>   574

expensive as the proportion of old low-priced supplies decreased in relation to
high-priced supplies. By the end of 1982 the price of crude oil and fuel oil
(which is competitive with natural gas) had declined. Further, because of energy
conservation and a recession in heavy industry, the market for natural gas was
then stagnant.

         These phenomena, together with the enormous NGPA-derived increases in
the supply and price of gas, created a surplus of natural gas, called the
"bubble." The bubble was viewed by virtually all observers and commentators in
government and industry as temporary.

         In the mid-1980's, most major pipelines found themselves with excess
supplies of gas under contracts with price and take-or-pay levels that were not
responsive to the market. The higher the gas cost reflected in pipeline tariffs,
the less attractive pipeline gas became in the marketplace. The response of the
pipeline industry included attempts to seek relief from FERC through special
marketing programs, requests that FERC declare non-market responsive gas
purchase contracts unlawful under section 5 of the NGA, and in some instances,
court tests as to whether the defense of force majeure excused
pipelines from their expensive take-or-pay obligations. These efforts failed to
resolve the pipeline industry's mounting take-or-pay and excess supply problems.

         Some of TCO's Customers and others challenged TCO's attempts to recover
the costs of purchasing gas under its long-

                                      III-8
<PAGE>   575

term contracts. In January 1984, FERC found that TCO had acted improperly in
discharging its duty to provide adequate gas supplies at the lowest reasonable
price. FERC concluded that TCO failed to ensure that over the long term its gas
costs wouldbe competitive with alternate fuel prices in TCO's service territory.
This decision put at risk the recovery by TCO of hundreds of millions of dollars
in gas costs under existing Producer contracts.

         In order to avoid continued litigation, TCO commenced settlement
discussions with Customers, FERC staff and others. In June 1985, FERC approved a
settlement (the "PGA Settlement"), among TCO, its Customers and other interested
parties whereby TCO reduced and froze its sales commodity rate for two years,
and Customers agreed to make every effort to purchase specified quantities of
gas from TCO. The PGA Settlement resulted in write-offs for TCO in excess of
$400 million in 1985 and 1986, and subjected it to potentially substantial
future losses if its high-priced supply contracts could not be renegotiated.

         Later in 1985, TCO undertook a major initiative to reform its large
Southwest Producer contracts with prices above the prevailing market price (the
"Producer Price Reduction Purchase Plan" or "PPRPP"). From 1985 through 1987,
TCO paid approximately $1 billion to Producers, including approximately $800
million paid primarily pursuant to the PPRPP to Southwest Producers, to reform
the price, take-or-pay and other provisions in its Producer contracts.


                                     III-9
<PAGE>   576

                 3.       THE ADVENT OF "OPEN ACCESS" AND "UNBUNDLING"

         Due to changes in the energy marketplace caused by the legislative and
regulatory actions described above, the price of gas purchased by LDCs from
pipelines came to significantly exceed the cost of purchasing gas directly from
producers and paying a pipeline to transport it. But the LDC's were, at least in
part, foreclosed from pursuing alternatives by the Federally-approved
"pipeline-as-merchant" structure of the industry.

         Responding to this situation, in October 1985, FERC issued Order No.
436, which encouraged pipelines to accept blanket certificates to transport gas
for any party, provided that the pipelines offered the service on a
non-discriminatory basis to all potential customers. Such "open access"
transportation was to be available even if it resulted in a displacement of
sales by the transporting pipeline. TCO accepted its open-access transportation
certificate in early 1986, followed shortly thereafter by virtually all other
major interstate pipelines. However, this solution left the pipelines "holding
the bag," as the United States Court of Appeals for the D.C. Circuit put it at
the time, because the pipelines would continue to bear the cost of their
high-priced supply contracts, which they had secured to satisfy their public
service obligations to customers and to avoid future shortages of gas.

         After the freeze on TCO's sales rate agreed to in the PGA Settlement
ended on April 1, 1987, controversies about TCO's 

                                     III-10
<PAGE>   577

ongoing gas costs and its attempt to recover from Customers a portion of its
PPRPP payments ensued. TCO, its Customers and others eventually reached a
"Global Settlement" in 1989, which resolved these controversies, provided new
and increased services for Customers, and established for TCO a Gas Inventory
Charge ("GIC") in connection with its sales service.(7) The Global Settlement 
also provided a mechanism whereby TCO had the opportunity to recover from
Customers an estimated $217 million of its PPRPP payments.

                 4.       FURTHER FEDERAL ACTIONS AFFECTING THE COST OF PIPELINE
                          "MERCHANT" GAS

         In July 1989, Congress enacted the Natural Gas Wellhead Decontrol Act
of 1989 (the "Decontrol Act"), which deregulated, effective January 1, 1993, the
price of all gas, including categories of gas that were to be forever regulated
under the NGPA. This deregulation made certain alternative pricing formulae in
pipelines' take-or-pay contracts potentially applicable starting in 1993. These
alternative formulae would generally result in higher contract prices and higher
weighted

- ---------------                                   
(7)      The purpose of the GIC generally was to provide TCO, under certain 
         circumstances, with a source of revenue that would compensate it 
         (at least in part) for its costs in maintaining firm gas supplies to 
         meet its wholesale Customers' indicated requirements.  TCO was given
         an opportunity to charge its Customers $.35 per dekatherm for the 
         amount by which Customer purchases fell below certain levels, 
         provided that TCO met an annual "comparability test" by having an 
         average sales commodity rate no higher than those of certain 
         specified pipelines.  Any such revenues could be used by TCO to 
         offset ongoing gas supply costs. Such revenues could be retained for 
         a five-year period.  Any amounts remaining thereafter were to be 
         returned to the Customers.

                                     III-11


<PAGE>   578
average gas costs for TCO. The Decontrol Act also eliminated any need
for FERC authorization for a producer to stop selling gas to one purchaser and
to sell that gas to another purchaser. This made it somewhat easier for
customers and competitors of pipelines to acquire gas directly from producers 
instead of pipelines.

                 5.       TCO'S 1991 "EXCESS SUPPLY CRISIS"

         Although TCO met the comparability test under the Global Settlement and
collected GIC revenues of approximately $22 million for the contract year ending
October 31, 1990, it was unable to do so for the subsequent twelve-month period
for several reasons. First, the winter of 1989-90 had, in the aggregate, been
unusually warm across the eastern United States, and the twelve months of 1990
were the warmest in TCO's history. The warm weather continued in 1991, setting
an all-time record for the fifteen-month period from January 1990 through March
1991. TCO's sales and earnings were far less than projected as warm winter
weather decreased the demand for gas and spot market prices fell. In February
1991, when spot market prices were expected to be at their annual peak, they
plummeted to unprecedented low levels for the winter heating season.

         Second, the lower demand experienced in TCO's service territory during
the 1990-91 winter freed up additional capacity on pipelines, including TCO's,
that was used by Customers to transport gas which they purchased on the spot
market directly from producers and marketers. As a result, TCO's sales for the 

                                     III-12
<PAGE>   579

1990-1991 winter fell to 111 Bcf, half the anticipated sales level.

         Simultaneously, production under several contracts that had not been 
renegotiated by TCO in 1985 increased, forcing TCO to take (or pay for)
increasing volumes of high-priced gas. In addition, several other contracts
became uneconomic when spot market prices declined sharply. Consequently, TCO
commenced a contract buydown program in the latter half of 1990. Several
targeted gas supply contracts were successfully reformed pursuant to this
program, but it was only partially completed when price and supply conditions
worsened further in 1991.

         The sharp drop in sales and the rise in high-priced supply further
increased TCO's gas supply management costs and its related borrowing
requirements. In response to these business conditions, TCO revised its
operating and financial plans, undertook steps to reduce operating expenses,
decreased its planned capital expenditures, and pursued studies of new rate
designs and rate structures.

         During the first quarter of 1991, TCO also undertook various
extraordinary operating steps to protect the integrity of its storage operations
and to minimize its contractual exposure. TCO reached agreement with its
Customers and received FERC approval to waive certain provisions of its rate
schedule for gas storage service provided to its Customers. The waiver permitted
Customers to postpone delivery of approximately 38 Bcf of third-party gas to TCO
for injection into storage from the 

                                     III-13
<PAGE>   580

summer of 1991 to the summers of 1992 and 1993. In return TCO agreed to make
equal quantities available to such Customers during the 1991-92 heating season
and to protect them if spot-market gas prices were higher in the summers of 1992
or 1993 (when they were to purchase replenishment gas).(8)

         By late March 1991, a number of natural gas price projections, 
including those developed internally for the entire Columbia System, were
substantially reduced for the period 1991-1995 because of the gas surplus caused
by continued warm weather and exploration and drilling reports for 1990 that
indicated substantial increases in activity. Columbia System forecasts in 1990,
in line with general industry forecasts, had predicted a spot market price in
January/February 1991 of approximately $2.40 per Mcf with gradual increases in
future years. The actual February 1991 spot price was in the range of $1.40 per
Mcf. The new forecasts predicted spot prices over several subsequent heating
seasons at $.85 to $.90 per Mcf lower than the prices forecasted in 1990.

         In light of these revised price projections, TCO's merchant gas was
projected to be less competitive than previously anticipated, even assuming the
successful completion of the previously announced Producer renegotiations.
Consequently, gas sales were projected to be insufficient to avoid substantial

- ---------------
(8)      This agreement was revised with Bankruptcy Court approval in March 
         1992 to provide for the postponed quantities to be redelivered to 
         TCO in the summer of 1992, thus mitigating the exposure to TCO for
         increased costs under the arrangement.     
         

                                     III-14
<PAGE>   581

future gas supply management costs. In addition, TCO projected that it would not
be able to meet the comparability test for collecting GIC revenues.

         In mid-to late May 1991, TCO began to finalize its ongoing studies, the
costs associated with such problems and the feasibility of various possible
responses, including seeking regulatory changes in the merchant function and
rate restructuring. These studies were designed to yield fundamental structural
solutions to resolve TCO's gas supply problems and to estimate the amount by
which TCO's potential gas supply costs exceeded predicted spot market prices.
The studies focused on the impact of the substantially reduced forecasts of spot
market prices, the effect of pending deregulation and increases in
deliverability under some contracts. 

         In early to mid-June 1991, Columbia's management reviewed TCO's 
recommendations, which included a proposed buydown of all of its high-cost
purchase contracts to market-based prices. Columbia's Board of Directors was
presented with the financial planning analyses, excess gas cost studies, the
reports of other studies and projects, and management proposals for dealing with
the excess gas cost problem. The Board was informed that, based on the
information available at that time, the present value of the total excess of all
gas costs above predicted spot market prices for the following ten years could
exceed $1 billion. The analyses underlying this estimate were refined throughout
June and July. Following the Petition Date, TCO continued to refine 

                                     III-15
<PAGE>   582

the studies, which became known as the Life of Reserve Study (the "LOR Study").

         The Board endorsed the recommendation of TCO management to undertake a
comprehensive effort to terminate all of its above-market gas purchase contracts
by offering Producers up to $600 million of short-term TCO obligations under the
PSP.

         On June 19, 1991, Columbia announced that a substantial portion of the
projected exposure of nearly $1 billion on above-market priced gas purchase
contracts would likely be charged to income in the second quarter; that TCO was
launching a comprehensive effort to renegotiate or terminate all of its
above-market gas purchase contracts; that Columbia had suspended the dividend on
its common stock; and that it was meeting with bank lenders in an effort to
re-establish its credit facilities on revised terms.

         Following the June 19, 1991 announcement, it was no longer possible for
Columbia to issue commercial paper or borrow under its bank credit lines.
Because Columbia only had sufficient cash on hand to fund the operational needs
of its subsidiaries for a short time, it was unable to pay maturing short-term
debt obligations.

         During June and July 1991, TCO entered into negotiations with its
high-cost Producers. This time period proved 

                                     III-16
<PAGE>   583

insufficient to bring these numerous negotiations to a conclusion. (9)

         During this period, Columbia entered into intense negotiations to
reestablish its lines of credit, but an acceptable agreement could not be
reached in a timely manner. As a result of these financial difficulties, on July
31, 1991, Columbia and TCO filed for protection under Chapter 11 of the
Bankruptcy Code in the United States Bankruptcy Court for the District of
Delaware.











- ---------------
(9)   TCO's financial problems worsened when the West Virginia Supreme
      Court of Appeals, in an otherwise unrelated decision, ordered that TCO
      must post a $10 million bond by July 29, 1991, in order to stay execution
      pending appeal of a $29.5 million judgment against it in Bruen v.
      ColumbiaGas Transmission Corporation.  The Bruen judgment was ultimately
      invalidated in its entirety by the West Virginia Supreme Court.


                                     III-17
<PAGE>   584

IV.       CURRENT AND FUTURE OPERATIONS; CUSTOMER AND UPSTREAM PIPELINE ISSUES
          AND SETTLEMENTS.

          A.    TCO'S IMPLEMENTATION OF ORDER NO. 636 RESTRUCTURING

                1.        GENERAL OVERVIEW

          On April 8, 1992, FERC issued Order No. 636, its final Rule on
Pipeline Service Obligations and Equality of Transportation Services by
Pipelines.(1)  FERC stated that this rule, which is often referred to as the
"Restructuring Rule," was the final stage in the transition of the pipeline
industry to one in which pipelines function principally as transporters of gas
purchased by others directly from producers and other suppliers.  These
regulatory changes were designed by FERC to increase the competitive structure
of the natural gas industry while maintaining adequate and reliable service to
consumers.

          The Restructuring Rule:

          (i)   required pipelines to "unbundle" their sales, or merchant
function, from their transportation and other functions by moving the point at
which pipeline sales to wholesale customers (if any) take place, the effect of
which has been virtually to eliminate the interstate pipeline merchant service;





- ---------------
(1)   Pipeline Service Obligations and Revisions to Regulations
      Governing Self-Implementing Transportation; and Regulation of Natural Gas
      Pipelines After Partial Wellhead Decontrol, 57 Fed. Reg. 13,267 (April
      16, 1992); III FERC Stats. & Regs. Preambles paragraph 30,939 (April 8,
      1992); order on reh'g, Order No. 636-A, 57 Fed. Reg. 36,128 (August 12,
      1992), III FERC Stats. & Regs. Preambles paragraph 30,950 (August 3, 1992)
      order denying reh'g, Order No. 636-B, 57 Fed. Reg. 57,911 (December 8,
      1992), 61 FERC paragraph 61,272 (November 27, 1992).

                                      IV-1
<PAGE>   585
          (ii)  established the principle of equality of pipeline services for
all customers, regardless of whether they buy gas from a pipeline or some other
supplier;

          (iii) re-designed gas pipeline rates to the straight fixed variable
("SFV") rate design, under which all fixed costs are included in pipeline
demand rates and all variable costs are included in commodity rates;

          (iv)  restructured pipelines' contractual relations with upstream
pipelines and with customers, as more fully described below;

          (v)   provided mechanisms for pipelines to recover their transition
costs, i.e., costs that are the direct result of the implementation of Order
No. 636, once they became known and measurable.

          Four types of transition costs were identified in Order No. 636:

                (1)       Purchased gas costs that would have been recovered
          from customers through the PGA provisions of current tariffs, but
          which are unrecovered when a pipeline implements the Restructuring
          Rule and terminates its PGA;

                (2)       The cost of facilities or transportation arrangements
          no longer necessary or which are uneconomic after they are unbundled
          upon restructuring.  These costs, known as "stranded costs," include
          such things as unused or underutilized gathering facilities and the
          costs (including exit fees) associated with the termination of
          upstream pipeline transportation contracts which are not needed or
          desired by downstream pipeline customers or any other party;

                (3)       The cost of installing new facilities, such as remote
          electronic metering, flow control and information





                                      IV-2
<PAGE>   586
          systems, that may be required as part of the implementation of
          restructured services; and

                (4)       Gas supply realignment ("GSR") costs that are
          required to reform or terminate contracts obligating pipelines to
          purchase gas from producers or other suppliers, which contracts are
          no longer viable because they are in excess of the pipeline's
          merchant requirements or at prices higher than market prices.

          and (vi) set forth a timetable for restructuring to be implemented on
all pipeline systems, all leading toward industry- wide implementation by the
winter of 1993-94.

                2.        PROCEDURAL STATUS OF TCO'S RESTRUCTURING

          On December 30, 1992, TCO made its compliance filing pursuant to
Order No. 636.  FERC issued an initial order on TCO's compliance filing on July
14, 1993 (the "July 14 Order"), accepting, rejecting or requiring modification
of different aspects of TCO's compliance filing.

          On August 13, 1993, TCO made a revised Order No. 636 filing to comply
with the July 14 Order.  TCO and other parties also filed requests for
rehearing on many aspects of the July 14 Order.  On September 29, 1993, FERC
issued its Second Order on Compliance Filings and Order on Rehearing (the
"September 29 Order") whereby it accepted TCO's revised compliance proposal,
subject to modification, effective November 1, 1993.  On October 5, 1993, TCO
appealed certain aspects of the July 14 and September 29 Orders to the United
States Court of Appeals for the D.C. Circuit.  TCO's Creditors' Committee, some
of TCO's Customers and others also appealed these orders.  TCO made a second
revised Order No. 636 compliance filing on October 13,





                                      IV-3
<PAGE>   587
1993 to comply with the September 29th Order.  TCO and other parties also
sought rehearing of certain aspects of that Order.  On December 16, 1993, FERC
issued its third order in TCO's restructuring proceedings (the "December 16
Order").  FERC approved TCO's third compliance filing, with minor
modifications, and for the most part denied requests for rehearing.  TCO's
fourth compliance filing was accepted and all subsequent requests for rehearing
were denied.

          As indicated above, multiple parties-in-interest have filed appeals
from FERC's rulings on TCO's Order No. 636 compliance filings.  While FERC has
generally accepted TCO's proposals for implementation of the operational and
rate restructuring elements of Order No. 636, as well as the proposed
mechanisms for transition cost recoveries (with the exception of TCO's
proposals for recovery of GSR costs), FERC has ruled on the merits of TCO's
recovery claims for certain transition cost recoveries.  Disputes are pending
as to some of those issues, and reversal or modification of FERC's current
rulings, or TCO's inability to implement those rulings on the terms anticipated
by TCO, could adversely affect TCO's performance in the future.  However, TCO
believes the fundamental operational restructuring mandated by Order No. 636
will not be reversed, and has resolved the major transition cost recovery
issues through the Customer Settlement Proposal more fully described below.

          In accordance with FERC's direction, TCO began implementation of
restructured services pursuant to Order No.





                                      IV-4
<PAGE>   588
636 on November 1, 1993.  By order of the Bankruptcy Court dated October 20,
1993, TCO was authorized (to the extent such authorization is required) (i) to
implement compliance with Order No. 636, including the execution of new or
revised contracts with Customers and the filing of necessary tariffs and rate
schedules; and (ii) to transfer title to its storage working gas, free and
clear of liens, to its Customers (with valid liens and encumbrances to attach
to the proceeds of sale), and to sell miscellaneous assets on notice to the
Creditors' Committee.  That order further provided that execution of new
contracts did not constitute an assumption or rejection of existing
pre-petition contracts or an elevation to administrative priority of Claims
arising under those pre-petition contracts; and that no determination was being
made as to the status of Customers' recoupment rights or whether the existing
contracts were superseded or terminated as a result of Order No. 636.

                3.        IMPACT ON TCO'S SERVICES

          Order No. 636 has had a substantial impact on how TCO does business.
In particular, while the aggregate quantity of gas moved on TCO's system has
not and is not expected to change materially, TCO's business no longer includes
any significant merchant function but instead consists primarily of the storage
and transportation of natural gas owned by others.(2)





____________________

(2)   TCO retains a limited merchant service for some of its smallest Customers,
      but this accounts for less than 1% of its overall services.

                                      IV-5
<PAGE>   589
          FERC has generally accepted TCO's unbundling and service-related
proposals.  Thus, TCO has continued to provide firm, off- peak firm and
interruptible transportation services, and firm storage services
post-restructuring, as well as various new transportation, gathering and
storage services.

                4.        RATE ISSUES

          FERC has accepted TCO's compliance filing proposal to unbundle its
rates under the SFV rate design.  FERC has also held that TCO is not required
to file a new general rate case as part of its restructuring, although TCO has
the option of making limited or general rate filings to recover certain
transition costs.

          Various parties have appeals pending of Order No. 636 and of the FERC
orders relating to the implementation of Order No.  636 on TCO's system.  As
discussed below, the Customer Settlement Proposal provides that certain of the
issues raised on appeal are resolved by the Settlement, while other issues may
be pursued by certain parties with any resulting relief to be applied on a
prospective basis with no potential refund exposure to TCO, or collection
recovery exposure to Supporting Parties (as defined in the Customer Settlement
Proposal).  While it is possible that certain parties may continue to pursue
issues which could involve potential refund liability on TCO's part, any such
refund liability would be limited to these individual parties.  TCO regards
such parties' prospects for prevailing on such issues as remote and, in any
event, does not believe the





                                      IV-6
<PAGE>   590
results will have a material impact on TCO.  The Settlement also contemplates
that parties may continue to pursue issues surrounding TCO's recovery of costs
paid to Columbia Gulf between the implementation of Order No. 636 on November
1, 1993 and the termination of the Contract between TCO and Columbia Gulf as of
November 1, 1994 according to its terms.  While it is not possible to predict
the outcome of this reserved issue, TCO believes its recovery of the subject
costs will be upheld.

                5.        CUSTOMER CONTRACTS

          Prior to the Filing Date, TCO was a party to numerous executory
contracts with its Customers, covering the provision of services which TCO was
mandated or authorized to provide as a regulated interstate pipeline under the
NGA and FERC rules and regulations.  Under Order No. 636, pipelines generally
were required to offer the same capacity entitlements to their customers, on an
unbundled basis, as those customers had received prior to the implementation of
Order No. 636.

          However, customers were permitted to convert all or a portion of
their gas purchase entitlement from pipelines to transportation and/or storage
entitlement.  Firm transportation customers were further permitted to reduce or
eliminate their contractual transportation entitlement from pipelines, provided
that the pipeline could remarket the reduced capacity to other parties or
mutually agree with customers as to appropriate "exit fees".





                                      IV-7
<PAGE>   591
          FERC has also taken steps to provide that pipeline-customer
relationships will be governed more by contracts and less by regulation, such
as by issuing blanket abandonment authorization of pipeline services once a
restructured or new contract has expired or terminated, so that the contracts
themselves will govern the duration of such services.  However, in order to
ensure reliability of services to consumers, Order No. 636 provides firm
transportation and storage customers with a contract term of one year or longer
with a right of first refusal, so that, upon expiration of any firm
transportation or storage contract, the customer has the option of continuing
such service from the pipeline by matching any third-party offer for the
services.

          In connection with the implementation of Order No. 636, TCO offered
its Customers contracts reflecting the restructured services and regulatory
environment.  Many Customers refused to execute new contracts with TCO because
of concerns over the possible impairment of their recoupment, set-off or other
legal claims against TCO in its Bankruptcy Case.

          It is obvious that continuation of its business relationships with
the Customers to which it provides ongoing services is of the utmost importance
to TCO's ability to reorganize, pay its Creditors, and operate its business in
the future.  As a result, TCO believes it must, in connection with its
reorganization, resolve all issues regarding the status of its contractual
relationships with Customers.





                                      IV-8
<PAGE>   592
          As set forth in Section IV.B.4, "Customer Contract Issues and
Recoupment and Setoff Motions", disputes over Customers' rights to full payment
of all regulatory refund claims under their existing contracts have generated
extensive litigation before the Bankruptcy Court and the FERC during the course
of these proceedings.  The Customer Settlement Proposal, the terms of which are
embodied in the treatment of Class 3.2 of the Amended Plan and more fully set
forth below (See Section IV.C), contains a fair and reasonable resolution of
Customers' recoupment and setoff rights, avoids the possibility of assumption
by TCO of service contracts not yet amended to conform to Order No. 636
provisions, with attendant claims for cure costs, and sets the stage for the
consensual execution of new service contracts essential to the stable
operations of TCO post-reorganization, which will preserve substantial value in
the estate for Non-Customer Creditors.

          As provided in the Customer Settlement Proposal, TCO shall assume
pursuant to this Plan all service agreements and all other agreements with
Accepting Class 3.2 Claimants, provided that TCO is neither assuming nor
rejecting contracts or service agreements that have been superseded subsequent
to the Petition Date or which have otherwise terminated according to their
provisions.  TCO shall continue to provide, post-reorganization, the services
it currently provides under its FERC Gas Tariff, without prejudice to its
rights or the rights of any other party or the FERC to request, protest or
require modification or





                                      IV-9
<PAGE>   593
termination of such services.  TCO shall not reject any FERC-approved
settlement, including but not limited to, the Global Settlement and the PGA
Settlement, excluding exit fee agreements (and underlying upstream pipeline
contracts) approved by the Bankruptcy Court and the FERC if those agreements
are unwound in accordance with their terms.

                6.        UPSTREAM PIPELINE CONTRACTS

          As noted above, an important element of restructuring is the
unbundling of upstream pipeline transportation and storage contracts by
offering such contracts to downstream pipeline customers.  TCO has or had two
types of such contracts:

                (1)       market area contracts, whereby the upstream pipelines
          deliver gas into various points throughout TCO's system; and

                (2)       supply area contracts, whereby pipelines directly or
          indirectly deliver gas to Columbia Gulf Transmission Company ("Gulf")
          in the Southwest, which then transports such gas to TCO.

          Several of TCO's market area upstream pipeline contracts will be
retained by it.  FERC has approved TCO's direct assignment of most of the
capacity under its other market-area upstream pipeline contracts to its
Customers (together with the prospective transition costs attributable to those
contracts), according to the needs of its Customers for upstream pipeline
capacity, subject to bankruptcy law requirements of assumption as a precedent
to assignment.  However, only a portion of TCO's largest market area
transportation contract, with Tennessee Gas Pipeline Company ("Tennessee"),
could be assigned to Customers.  On November 15, 1993, the Bankruptcy Court
approved a settlement





                                     IV-10
<PAGE>   594
between TCO and Tennessee whereby the contract would be partially assigned and
the remainder of the contract would be terminated upon payment by TCO of an
exit fee to Tennessee.  The Bankruptcy Court has also approved settlements
between TCO and other market- area upstream pipelines, including Texas Eastern
Transmission Corporation, Panhandle Eastern Pipe Line Company, Texas Gas
Transmission Corporation, and Transcontinental Pipeline Corporation ("Transco")
permitting assumption of certain contracts and termination of others.

          All supply area upstream pipeline contracts were offered to TCO's
Customers and other parties on a nondiscriminatory basis.  To the extent
capacity under those contracts could not be assigned or remarketed by the
upstream pipeline suppliers, TCO undertook to negotiate appropriate exit fees
with the pipelines, recognizing that if a mutually agreeable exit fee could not
be negotiated, it might be necessary for TCO to reject such upstream pipeline
contracts in order to avoid the retention of a contract (and the associated
cost) which is not required for TCO's long-term operations.  Since November 1,
1993, the Bankruptcy Court has approved several exit fee settlements between
TCO and its supply-area upstream pipeline suppliers including Natural Gas
Pipeline Corporation ("NGPL"), Ozark Gas Transmission System ("Ozark"), Wyoming
Interstate Company, Ltd. ("WIC"), Trailblazer Pipeline Company ("Trailblazer"),
and TCO is seeking Bankruptcy Court approval of a similar settlement with
Overthrust Pipeline Company ("Overthrust").





                                     IV-11
<PAGE>   595
          All of the settlements are subject to TCO obtaining FERC approval of
the settlements and of TCO's recovery of the full amount of the negotiated exit
fees from its Customers.  On June 30, 1994, the Commission approved the
Tennessee Exit Fee settlement.  On September 28, 1994, FERC denied requests for
rehearing of its June 30 order.  On January 27, 1995 and February 10, 1995,
FERC approved the Transco, WIC, Trailblazer and NGPL settlements.  Requests for
rehearing of FERC's orders, or appeals to the United States Court of Appeals
for the D.C. Circuit, are pending.

          TCO's Plan assumptions and the Payout Analysis annexed hereto as
Exhibit 2 do not include any allocation for upstream pipeline contract
rejection costs.  As set forth in Section IV.B.2, "Upstream Pipeline Supplier
Claims," several pipelines have Filed significant contingent Claims for such
potential liabilities, and others could still File such Claims if their
contracts are in fact rejected.  If that were to occur, TCO would expect such
Claims to assert liability for demand charges over the remaining life of those
contracts, subject to obligations to discount future liabilities and reflect
mitigation, and that such Claims could exceed $250 million.  Annexed to hereto
as Exhibit 3 are schedules of the proposed treatment or disposition of
pre-petition executory contracts between TCO and its upstream pipelines which
were in existence as of the Petition Date.





                                     IV-12
<PAGE>   596
          TCO has taken the position, under the authority of Order No. 636,
that any exit fees or contract rejection costs it becomes obligated to pay to
upstream pipelines are recoverable from its Customers as "stranded" transition
costs.  Customers and other interested parties have already opposed the
recovery of at least a portion of the exit fees negotiated by TCO and submitted
to FERC for approval, and likewise have stated they would oppose the
recoverability of payments on contract rejection Claims.  The proposed Customer
Settlement, set forth more fully below, substantially resolves the exit fee and
other Account No. 858 stranded cost recovery disputes, by providing that all
Settling Customers will pay their allocable shares of actual exit fees and
stranded 858 costs incurred by TCO, provided that, inter alia, TCO absorb $11.5
million of upstream pipeline stranded costs and flow through certain additional
refunds expected to be received from TCO's upstream pipelines.(3)

                7.        TRANSITION COST RECOVERY MECHANISMS

                          a.  NON-GAS COSTS

          TCO has proposed and FERC has approved a recovery mechanism for
non-gas costs associated with TCO's upstream pipeline contracts, including
unpaid pre-petition demand charges relating





____________________

(3)  The Customer Settlement provides that, in the event an exit fee settlement
      is voided or does not receive necessary regulatory approvals, TCO
      preserves its right to seek recovery, and customers preserve the right to
      oppose TCO's recovery, of all costs incurred by TCO from such pipelines
      with the terms of the Customer Settlement otherwise remaining intact.

                                     IV-13
<PAGE>   597
to periods subsequent to March 31, 1990, exit fees and costs associated with
Contract Rejection Claims, if any.  That mechanism is set forth in the
Transportation Cost Recovery Adjustment ("TCRA") provisions of TCO's FERC Gas
Tariff.  TCO's TCRA, which has been in effect since the 1989 Global Settlement,
is a tracker provision which allows dollar for dollar recovery of TCO's
upstream pipeline transportation and storage costs, to the extent paid by TCO.

          While FERC has accepted the proposed recovery mechanism and permitted
it to be included in TCO's tariff, Customers and other parties retain the right
to question the prudence and eligibility for recovery as transition costs of
any costs which TCO actually seeks to recover, and FERC will not rule on any
request for recovery until it is actually filed.  As discussed above, the
Customer Settlement Proposal provides for the recovery of substantially all of
TCO's costs under its upstream pipeline contracts.

                          b.  GAS COSTS AND GSR COSTS

          TCO has proposed to recover from its former sales Customers the
balance of unrecovered purchased gas costs associated with its merchant
function for periods prior to its implementation of restructuring (so-called
"Account 191 costs").  Such recovery includes liability associated with gas
received by TCO prior to the Petition Date, for which payments have either not
yet been made, or have been challenged as inadequate under the terms of





                                     IV-14
<PAGE>   598
the contracts.(4)   These gas costs will be paid to Producers in accordance with
the various treatments for Producer Claims in the Plan.  As discussed below,
the Customer Settlement Proposal provides for TCO's recovery of a substantial
level of such gas costs.

          TCO filed two mechanisms for recovery of GSR costs in its Order No.
636 restructuring proceedings, including a portion of the costs that will be
paid to Producers for damages arising from rejection of their gas supply
contracts.  These proposals were by far the most controversial elements of
TCO's compliance filing.(5)  TCO's Customers, affected state commissions and
consumer advocates vigorously opposed any recovery by TCO of contract rejection
costs.

          The July 14 and September 29 Orders effectively denied TCO's right to
recover the large majority of costs relating to the payment of Contract
Rejection Claims.  The FERC did acknowledge that TCO was not precluded from
seeking a limited recovery of costs for gas supply contracts rejected by TCO





____________________

(4)   Certain of the Producers asserting claims for unpaid pre- petition gas
      deliveries have asserted that their Claims are secured by statutory liens,
      which status TCO has disputed in an adversary proceeding pending before
      the Bankruptcy Court.

(5)   TCO's primary proposal sought recovery of such costs as GSR transition
      costs under FERC Order No. 636-A.  To the extent that any of such GSR
      costs were determined to be ineligible for GSR transition cost recovery,
      TCO proposed to recover a portion of such costs through FERC Order No.
      528, which requires pipelines to absorb at least 25% of such costs. Order
      No. 636-A, FERC's order on rehearing of Order No. 636, made minor
      modifications to Order No. 636.

                                     IV-15
<PAGE>   599
subsequent to October 31, 1991.  However, the vast majority of such contracts
were rejected prior to that date.  While TCO and the Creditors' Committee have
appealed those determinations, in light of FERC rulings to date, it is very
unlikely that Reorganized TCO would be able to recover a meaningful portion of
the payments to be made under the Plan to Producers for damages arising from
rejection of their gas supply contracts.  In addition to the unfavorable
prospects on the merits, the pursuit of such recoveries would be time
consuming, entail considerable legal expenses, and would threaten the
maintenance of a healthy business relationship among TCO and the Customers upon
which its business depends.  The Customer Settlement Proposal resolves the GSR
issue as between TCO and all Supporting Parties as defined therein.

          B.    REGULATORY CLAIMS AND RELATED LITIGATION

          As a federally regulated interstate pipeline, TCO's bankruptcy
proceeding has been complicated by the often conflicting interplay between the
requirements of the Bankruptcy Code, and the regulatory requirements applicable
to TCO's operation of its business in accordance with the requirements and
regulations of the Natural Gas Act and the FERC.  In particular, operational
and compliance issues have arisen affecting TCO's relationships with its
upstream pipeline suppliers, and even more significantly its Customers, to whom
TCO supplies transportation and storage services and from whom it receives the
major portion of its revenues.





                                     IV-16
<PAGE>   600
          In recognition of the significance of the interests of the Customer
constituency in TCO's case, on September 30, 1991, the U.S. Trustee appointed
the Official Committee of Nonaffiliated Customers (the "Customers' Committee"),
which subsequently retained legal and financial advisors.  In addition,
individual Customers and various state regulatory and consumer agencies have
intervened in the Bankruptcy Case since the Petition Date, and have actively
monitored all proceedings.

          The regulatory and contractual relationships between TCO, its
upstream pipelines and its Customers have been significantly affected by the
impact of Order No. 636, and TCO's required restructuring.   The sections below
discuss more fully the nature and status of the issues, and ultimately the
resolutions achieved.  Extensive litigation before the Bankruptcy Court, the
FERC and various levels of appellate courts has ensued during this Case, as
TCO, its Customers, the Creditors' Committee and other interested parties have
attempted to define and adjust their competing interests.  The implementation
of Order No. 636 added significantly to the already-present claims of TCO for
cost recoveries of various kinds, totaling significant sums for TCO's Estate,
and these collections were entangled in many respects with the resolution of
Customers' Claims in the Bankruptcy Case and the resolution of upstream
pipeline Claims and contracts.

          Ultimately, the Customer Settlement Proposal described below was
negotiated by TCO, the Customers' Committee, most of





                                     IV-17
<PAGE>   601
its affiliated and unaffiliated firm service Customers, and various state
regulatory and consumer agencies as a global mechanism for resolving dozens of
pending litigations affecting the amount and priority of potentially hundreds
of millions of dollars of Claims in TCO's Bankruptcy Case, and the
recoverability of several hundred millions of dollars in Customer payments.
The following sections describe the major pending Bankruptcy and FERC
litigation which will be resolved by approval of the settlement and
confirmation of the Plan, the Customer and upstream pipeline claims which are
resolved, the nature of the settlement, the terms of which are set forth in the
Customer Settlement Proposal annexed to the Plan as Exhibit "E", and the
proposed treatment of upstream pipeline and Customer Claims under the Plan.

                1.        CUSTOMER CLAIMS

          Approximately 450 Claims have been filed relating to or arising from
TCO's contracts with its Customers for sales, transportation, gas storage and
similar services, totaling approximately $550 million as filed plus
unliquidated amounts.  Customers have asserted trust fund, recoupment, setoff
and other theories which could elevate their otherwise pre-petition unsecured
claims to higher priority status, and extensive litigation relating to those
matters has occurred during the Bankruptcy Case.

          Generally, Customer Claims allege several bases for liability against
TCO including, inter alia, claims for upstream





                                     IV-18
<PAGE>   602
supplier Order No. 500/528 flow-through refunds (whether or not treated as
trust funds), refunds owed in connection with the 1990 Rate Case, certain tax
refunds relating to storage gas, refunds alleged to be due as a result of
FERC's determination on remand of the D.C. Circuit's ruling in BG&E v. FERC,
refunds received by TCO relating to overcharges to Commonwealth by Transco,
refunds resulting from TCO's GIC mechanism, Winter Service inventory, pre-paid
transportation request fees, transportation and exchange imbalances, and
uncashed checks for rate refunds.

          In addition, TCO believes it is entitled to recover significant costs
from its Customers as transition costs under Order No. 636 and on other
grounds, and has asserted its rights in numerous proceedings before the FERC.
These obligations from its Customers include exit fees paid by TCO pursuant to
settlements for the termination of transportation agreements with upstream
pipeline suppliers and other Account No. 858 costs incurred pre- and
post-petition by TCO, Account No. 191 costs incurred pre- and post-petition,
gas supply-related costs for which TCO could have sought recovery through its
GIC (which was terminated when TCO implemented Order No. 636), costs associated
with certain contracts TCO rejected in its bankruptcy proceedings and various
other costs TCO is authorized to recover under the regulatory scheme of the
Natural Gas Act.

          TCO believes that the treatment of Customer Claims, as reflected in
the Customer Settlement Proposal, is acceptable to





                                     IV-19
<PAGE>   603
the vast majority of its Customers as a resolution both of disputes relating to
Customers' Claims against TCO and the settlement of substantial claims of TCO
against the Customers for recovery of Order No. 636 transition costs and other
costs.

          Through its Plan, TCO seeks Bankruptcy Court approval of the
settlement of the many issues embodied in the Customer Settlement Proposal also
submitted to the FERC, and will seek approval of the proposed treatment of
Customer Claims embodied in the Plan.  TCO proposes to divide Customers' Claims
into three categories:  (1) regulatory refund and non-regulatory refund claims
totaling $25,000 or less (per Customer), which are treated as convenience class
claims in Class 3.1; (2) regulatory refund claims and the GRI claims in excess
of $25,000 which are treated in Class 3.2; and (3) non-regulatory refund Claims
in excess of $25,000 which are treated in Class 3.4.

                2.        UPSTREAM PIPELINE SUPPLIER CLAIMS

          Claims relating to or arising from TCO's contracts with its upstream
pipeline suppliers for gas purchase, transportation and storage services
represent about fifty-four Claims, totalling approximately $123 million as
filed and amended.  In addition to certain pipeline-specific issues, the bases
for liability generally asserted in these Claims include: (i) amounts for
pre-petition services rendered; (ii) amounts allegedly due under pipeline
filings to recover costs under FERC Order Nos. 500 and 528; (iii) amounts
allegedly due under pipeline filings to recover costs incurred resulting from
FERC Order No. 94





                                     IV-20
<PAGE>   604
production-related costs; (iv) potential contract rejection damages; and (v)
return of gas imbalances that TCO owed under gas transportation and exchange
agreements.

          As part of TCO's implementation of new services and the restructuring
of its operations consistent with FERC's Order No. 636, TCO has to assume,
assign or terminate its pre-petition upstream pipeline contracts and resolve
Claims relating to those contracts.  As a general rule, where an upstream
pipeline's capacity can be assigned to TCO's downstream Customers without
further liability to TCO, TCO has assumed the pipeline contracts in order to
effectuate the assignment and pay settled and agreed pre- petition invoices as
"cure" costs (which payments may be recoverable from TCO's Customers through
the TCRA).  As to upstream pipeline contracts where some or all of the capacity
is "stranded" i.e., not assignable to TCO's Customers and not needed by TCO,
TCO has negotiated exit fee agreements which operate to terminate the upstream
pipeline contracts in consideration for payment of the exit fees, which, in
turn may be recoverable from TCO's Customers.

          The Bankruptcy Court has consistently approved the exit fee
arrangements TCO has negotiated with various upstream pipelines, conditioned on
recovery from Customers of the exit fees payable to upstream pipelines, and
FERC has approved all but one of the agreements with the remaining agreement
presently pending approval.  Customers, however, have asserted objections to
the amount and their liability for such exit fees, arguing, among





                                     IV-21
<PAGE>   605
other things, that the capacity underlying those contracts became unused and
unuseful prior to November 1, 1993 and therefore the exit fees and other
stranded Account No. 858 costs were not directly related to or recoverable
under Order No. 636.

          This issue, including pending requests for rehearing and appeals, has
been compromised, in principle, as part of the Customer Settlement Proposal.
Under that settlement proposal, TCO will recover all but $11.5 million of its
upstream pipeline stranded costs, which include both exit fee payments and
other contractual costs paid prior to the termination of stranded contracts.
Contingent contract rejection and transition cost Claims filed by TCO's most
significant upstream pipelines will most likely be resolved in this manner, and
it should not be necessary for TCO to reject pipeline contracts, thereby
avoiding substantial, unliquidated rejection damage Claims which could
significantly dilute the level of recoveries available for other unsecured
Creditors.

          Upstream pipeline Claims which are treated under the Plan consist of
pre-Petition Date unpaid transportation charges and certain other settled
amounts which are treated as trade payables in Class 3.4, entitled to receive
72.5 cents on the dollar.  To the extent upstream pipeline contracts have been
assumed by TCO, Bankruptcy Court orders have authorized the payment of
pre-petition unpaid charges as cure costs.





                                     IV-22
<PAGE>   606
                3.        THE OMNIBUS FERC MOTION

          In connection with the Motion for Order Authorizing Columbia Gas
Transmission Corporation to comply with Federal Energy Regulatory Commission
Gas Tariff and Orders and Regulations of the Federal Energy Regulatory
Commission filed by TCO on August 23, 1991 with the Bankruptcy Court (the
"Omnibus FERC Motion"), and after hearings and extensive briefing by numerous
parties in interest, the Bankruptcy Court issued a Memorandum Opinion and Order
on February 13, 1992 regarding, inter alia, TCO's right to flow through to its
Customers pre-petition refunds from its pipeline suppliers pursuant to FERC
orders and its FERC Gas Tariff and to pay to GRI pre-petition collections from
its Customers under a special GRI surcharge.

          The Bankruptcy Court adopted the arguments of TCO and its Customers
that such pre-petition refunds and collections were held in trust for TCO's
Customers and GRI, respectively, pursuant to FERC orders and its Tariff.  The
Bankruptcy Court authorized TCO to flow through all pre-petition pipeline
supplier refunds and GRI collections received post-petition, to its Customers.
However, applying the "lowest intermediate balance rule", the Bankruptcy Court
held that for refunds and GRI collections received by TCO pre-petition
(totalling approximately $35 million), the trust fund Claims were limited to
TCO's cash on hand on the Petition Date, i.e., $3.3 million.  TCO's Customers
and GRI were entitled to receive their pro rata share of the $3.3 million cash
balance.  The Bankruptcy Court





                                     IV-23
<PAGE>   607
denied TCO's request to reimburse its upstream pipeline suppliers and
transporters for pre-petition transportation charges.(6)

          TCO, the Creditors' Committee, the Customers' Committee and others
appealed the Bankruptcy Court's decision.  On July 6, 1992, the United States
District Court for the District of Delaware overturned the Bankruptcy Court's
February 13 Order, holding that the supplier refunds and GRI collections were
not held in trust, but belonged to TCO's Estate for the general benefit of its
Creditors.(7)

          The District Court upheld the Bankruptcy Court's Order  that the
amounts owed to upstream pipeline suppliers constituted general unsecured
Claims and, thus, could not be paid to such suppliers prior to a plan of
reorganization.





____________________

(6)   In prior orders, the Bankruptcy Court approved three stipulations
      resulting from the Omnibus FERC Motion which, inter alia, authorized TCO
      to (i) pay its pre-petition FERC charges; (ii) remedy imbalances with
      respect to gas deliveries which existed between TCO, its Customers and
      other parties as of the Petition Date in the normal course of business;
      (iii) deliver gas to its firm storage Customers pursuant to its FSS
      agreements and FERC regulations and orders, subject to certain conditions
      and (iv) consummate settlements of certain FERC matters without Bankruptcy
      Court review if TCO's Creditors' Committee, after notice, did not object.

(7)   Of the approximately $195 million of refunds at issue, approximately $165
      million relate to FERC Order No. 500 and 528 refunds.  See Section IV.B.3,
      "The Omnibus FERC Motion."  On August 20, 1992, TCO advised FERC that in
      view of the District Court's July 6 Order, it was suspending all remaining
      upstream pipeline Order No. 528 payments as well as Order No. 528 billing
      adjustments to its Customers.  On October 15, 1992, FERC granted TCO the
      necessary waivers for such suspensions.

                                     IV-24
<PAGE>   608
          TCO, its Customers and other parties appealed the District Court's
ruling to the United States Court of Appeals for the Third Circuit.  On July 6,
1993 the Court of Appeals reversed in part and affirmed in part the decision of
the District Court.  In effect, the Court of Appeals reinstated the decision of
the Bankruptcy Court, holding that the supplier refunds and the GRI collections
were held in trust by TCO and that the transportation charges owed to upstream
pipeline suppliers and transporters were pre-petition unsecured charges for
goods and services.  The ruling generally authorized TCO to flow through to its
Customers and the GRI the funds owed.  However, the Court of Appeals also
reinstated that portion of the Bankruptcy Court's decision which applied the
"lowest intermediate balance rule" to the supplier refunds and GRI collections,
holding that only the $3.3 million dollars cash on hand when TCO filed its
petition would be available to satisfy Claims relating to monies actually
collected by TCO pre-petition.  On February 22, 1994, the United States Supreme
Court denied the Creditors' Committee's petition for certiorari of the Third
Circuit's decision.

          As a result of the Third Circuit's decision, TCO has refunded
approximately $170 million of upstream pipeline refunds received post-petition
to its Customers.  Because the refunds that were the subject of TCO's requests
for relief in the Omnibus FERC Motion were limited to certain refunds
enumerated therein, TCO and the various parties reserved their rights to





                                     IV-25
<PAGE>   609
request a further adjudication of whether certain other refund obligations owed
by TCO similar in character to the Trust Claims should also be considered trust
funds and thus subject to the $3.3 million lowest intermediate balance.  Thus,
TCO has not distributed to date any of the $3.3 million to its Customers.

          While the appeals to the Third Circuit were pending, on January 6,
1993, the Bankruptcy Court approved a motion by TCO to establish a Restricted
Investment Arrangement (the "RIA Account", as defined in the Plan) for supplier
refunds held by TCO as of or paid to TCO following the Petition Date, with the
disposition of the funds to be subject to the outcome of the appellate
proceedings and further order of the Bankruptcy Court.  On March 2, 1993, FERC
approved an Order directing TCO's pipeline suppliers to pay all such refunds
pursuant to FERC orders to TCO and for TCO to place such refunds into the RIA
Account.

          On June 23, 1994, FERC ruled that TCO could pay interest actually
earned by the RIA on such flowthrough refunds after such refunds were deposited
into the RIA, but must pay interest at higher FERC-prescribed rates from the
dates TCO collected the refunds until they were deposited into the RIA (the
"FERC Interest Order").  FERC denied rehearing of its order on October 5, 1994.
One TCO Customer has filed a petition for review of this order with the United
States Court of Appeals for the D.C. Circuit.  TCO has made additional refunds
of $8.6 million consistent with FERC's orders.  References to "RIA Interest" in





                                     IV-26
<PAGE>   610
the Plan of Reorganization and this Disclosure Statement mean interest
consistent with the FERC Interest Order.

                4.        CUSTOMER CONTRACT ISSUES AND RECOUPMENT AND SETOFF
                          MOTIONS

           Since September of 1993, various Customers of TCO (collectively, the
"Recoupment Movants") have filed motions with the Bankruptcy Court seeking
authority to permit them to exercise alleged recoupment rights, whereby any
refunds owed to them which were not otherwise payable in full under the Third
Circuit Decision on the Omnibus FERC Motion (i.e., the difference between the
upstream pipeline refunds received by TCO pre-petition and the Customer pro
rata share of the aforementioned $3.3 million), all 1990 Rate Case refunds,
BG&E refunds and miscellaneous refunds not otherwise payable in full under
current court rulings, would be "recouped" out of post-petition payments due
under ongoing service contracts between TCO and those Customers.  Certain other
Customers (collectively, the "Setoff Movants") have filed motions seeking
authority to setoff post-Petition Date Weighted Average Cost of Gas ("WACOG")
surcharges,(8) collectible by TCO from its Customers, against pre-and
post-petition refunds and other alleged obligations of TCO to those Customers.

          In October 1993, the Bankruptcy Court approved interim stipulations
pursuant to which the Recoupment Movants, the





____________________

(8)   The WACOG surcharge arises under TCO's 1985 PGA Settlement with its
      Customers which permits TCO to recover certain gas costs from its
      Customers if TCO meets the "WACOG test" in given years.

                                     IV-27
<PAGE>   611
Setoff Movants and certain similarly situated Customers have continued making
payments to TCO for FERC-authorized services and charges while TCO has agreed
to grant such Customers administrative priority Claims to the extent the Court
finds that such Customers are entitled to recoupment or setoff rights
("Administrative Recoupment Claims.")  On January 6, 1994, the Bankruptcy Court
entered an order approving procedures pursuant to which Customers similarly
situated to the Recoupment and Setoff Movants could assert similar claims.
Approximately 50 of TCO's Customers have filed such requests for recoupment
and/or setoff of the applicable amounts of their claims, certain of which
amounts are unliquidated or contingent.  TCO, its Creditors' and Customers'
Committees, the IRS, various state regulatory agencies and various Customers
subsequently filed summary judgment motions and briefs in support of or
opposition to the recoupment and set-off requests.  The last brief was filed on
August 24, 1994.  To date, the Bankruptcy Court has not set a hearing to
consider oral argument or issued a ruling on the Customers' requests.

          These disputes over the payment of Customer refunds have resulted in
proceedings before FERC as well as the Bankruptcy Court, whereby Customers have
sought protection of their recoupment and setoff rights, if any,
notwithstanding an alleged obligation to execute new or revised contracts
reflecting TCO's restructured service obligations under Order No. 636.  To
date, many Customers have yet to execute such contracts, and all





                                     IV-28
<PAGE>   612
parties have preserved their rights with respect to the legal significance in
the Bankruptcy context of the execution of the new agreements.  The Customer
Settlement Proposal promises to bring an end to this ongoing litigation over
Customer contracts and allow full implementation of TCO's Order No. 636
restructuring.

                5.        THE BG&E CASE

          Under FERC Order No. 500, issued in August, 1987, FERC established a
policy allowing pipelines to bill directly a portion of their take-or-pay and
contract reformation costs (herein referred to as "Order No. 500 Costs") to
their customers, provided that the pipeline was willing to absorb an equal
share of such costs.  All of TCO's pipeline suppliers received FERC acceptance
for direct billing recovery of Order No. 500 costs, resulting in an allocation
to TCO of approximately $350 million in principal dollars.  TCO and other
parties challenged the legality of the allocation methodology, and in December,
1989, in a case styled AGD v. FERC, 893 F.2d 349 (D.C. Cir. 1989), cert.
denied, 498 U.S. 907 (1990), the reviewing court held that the allocation
applied by FERC violated the filed rate doctrine and the prohibition against
retroactive ratemaking under the NGA.

          In November 1990, FERC issued its Order No. 528, which required
pipelines to file revised direct billing recovery mechanisms for Order No. 500
Costs to comply with the mandate of the Court in AGD v. FERC.  TCO's Order No.
500 cost allocation





                                     IV-29
<PAGE>   613
has been reduced to a principal amount in excess of $122 million.

          TCO's Customers and consumer groups challenged TCO's recovery of any
Order Nos. 500 and 528 direct charges billed to TCO by its pipeline suppliers.
They argued that TCO was barred from recovering such charges under its 1985 PGA
Settlement, and that TCO should not recover such charges because they resulted
from imprudent past purchasing practices.  FERC had issued a series of orders
holding that (i) TCO was not precluded from recovering such charges under the
1985 PGA Settlement; and (ii) that the Settlement barred challenges to TCO's
purchasing practices prior to April 1, 1987.

          TCO's Customers filed petitions for review of such orders in a case
styled Baltimore Gas & Electric Co. v. FERC, D.C. Cir.  No. 88-1779 (the "BG&E
Appeal").  On June 24, 1994, the D.C. Circuit Court of Appeals ruled on the
BG&E Appeal.  It held that TCO is not entitled to recover from its Customers
Order No. 500/528 fixed charges paid by TCO to its upstream pipeline suppliers
if and to the extent such charges are "applicable to" gas purchases made by TCO
prior to April 1, 1987.  Baltimore Gas & Electric Company v.  FERC, 26 F.3d
1129 (D.C. Cir. 1994)(the "BG&E Decision").  The total principal amount of
Order No. 500/528 costs paid by TCO to the upstream pipelines and recovered
from its Customers exceeded $122 million.  Including interest, the amount at
issue as of July 31, 1991 exceeds $162 million, and as of December 31, 1994
exceeds $237 million.  The





                                     IV-30
<PAGE>   614
matter was remanded to the FERC for a determination as to the amount of refunds
owed by TCO to its Customers.

          On December 1, 1994, FERC issued an order on remand directing TCO to
make a factual submission regarding which fixed charges imposed by the upstream
pipelines were "applicable to" gas purchases made on or after April 1, 1987.
Extensions of time for such filing have been granted, so that TCO's evidentiary
submission is now due on May 15, 1995.  On January 26, 1995, the Commission
denied requests for rehearing of the December 1, 1994 order, but clarified that
it had not pre-judged any substantive issue, and that TCO and the other parties
were free to make any factual showing or take any position they desired
regarding the recoverability of the relevant costs.  The Customer Settlement
Proposal resolves the BG&E remand refund issue as between TCO, Accepting Class
3.2 Claimants, and all Supporting Parties as defined therein.

                6.        ORDER NO. 94 ISSUES

          In 1985, FERC accepted direct billing filings by certain pipeline
suppliers of TCO to recover certain retroactive charges paid to producers by
those pipelines for production and production-related costs under section 110
of the NGPA, pursuant to FERC Order No. 94.  These costs were in turn allocated
to each pipeline customer based upon its purchases from the pipeline during the
period 1980-83, when the pipelines purchased





                                     IV-31
<PAGE>   615
the subject gas from producers.(9) (These costs will hereinafter be referred to
as "Order No. 94 costs").  TCO (as lead petitioner) and other parties
challenged the legality of the past purchase allocation methodology under these
direct billing orders.  In decisions issued in October 1987 and February 1990,
in cases styled Columbia Gas Transmission Corp. v. FERC, the Court of Appeals
for the D.C. Circuit held that the past period allocation mechanism approved by
FERC violated the filed rate doctrine and the prohibition against retroactive
ratemaking under the NGA.  The United States Supreme Court denied petitions for
writ of certiorari of the latter decision in October, 1990.

          TCO entered into settlements with Panhandle, Texas Eastern, Trunkline
Gas Company and Texas Gas as to the appropriate allocation of Order No. 94
costs to TCO, which settlements provide for full recovery from TCO's Customers
of the revised amounts paid or to be paid to these upstream pipelines.  These
settlements were approved by FERC in early 1993 and thereafter by the
Bankruptcy Court, and the remaining Order No. 94 settlement with Transco was
presented to FERC.  Panhandle and TCO elected to accelerate the effectiveness
of their settlement, and Panhandle made a net refund of $5.9 million to TCO in
April 1993.  However, many of TCO's Customers filed requests for rehearings of
these orders at FERC, arguing that TCO should not be permitted to recover any
of these amounts from them.





____________________

(9)   In 1988, the FERC approved a similar direct billing filing by Panhandle to
      recover retroactive production-related costs under FERC Order No. 473.

                                     IV-32
<PAGE>   616
          On January 13, 1994, FERC issued rehearing orders in these cases
reversing its original approval of the settlements.  The FERC determined that
TCO's 1985 PGA Settlement precludes it from recovering from its Customers the
Order No. 94 amounts payable to the pipelines under the settlements, the effect
of which was to unwind the settlements.  However, the FERC also found that,
absent TCO's consent, the pipelines may not lawfully recover any of the subject
Order No. 94 costs from TCO.  The Commission thus ordered the pipelines to
refund the amounts previously billed to TCO (approximately $32 million) but
waived the normal requirement that such refunds include interest, which amounts
to approximately $29 million as of December 31, 1993.

          On October 18, 1994, FERC denied requests for rehearing in the
Panhandle, Trunkline, Texas Eastern and Texas Gas Order No.  94 proceedings,
but clarified that these pipelines must pay interest at FERC prescribed rates
on these refunds for the period commencing February 11, 1994.  On February 13,
1995, the Commission issued a similar order in Transco's Order No. 94
proceeding, finding that Transco must pay all principal Order No. 94 refunds to
TCO, but is not required to pay interest on such refunds.

          Columbia, Panhandle, Texas Eastern and Texas Gas have filed petitions
for review of the Commission's January 12 and October 18, 1994 orders.
Columbia has entered into arrangements with Panhandle, Texas Eastern and Texas
Gas, approved by FERC, to defer payment of any further refunds pending judicial
review,





                                     IV-33
<PAGE>   617
provided that the pipelines will be obligated to pay interest at FERC
prescribed rates on the refunds during the period pending judicial review and
that any party has the right to request FERC to accelerate the payment of
refunds.

          Depending upon the outcome of these appeals (and an order on
rehearing of the Transco February 13, 1995 order), TCO may have substantial
claims against the upstream pipelines for Order No. 94 refunds, while those
pipelines may assert claims against TCO for rebilling of these charges on a
legally sustainable basis (including the $5.9 million refund made by Panhandle
to TCO).  TCO intends to oppose the assertion of these Claims, and believes
there is no liability to TCO in connection therewith. The Customer Settlement
Proposal does not resolve or waive contingent claims which TCO might assert for
recoveries from its Customers in the event the upstream pipelines are
determined to have the legal ability to impose rebillings on TCO.

                7.        TCO RATE CASES

          On April 30, 1990, TCO and Gulf made joint general rate increase
filings with the FERC pursuant to section 4(e) of the NGA (Docket Nos.
RP90-108-000 and RP-90-107-000) (the "1990 Rate Case").  On May 31, 1990, the
FERC accepted and suspended the proposed rates and tariff sheets for the full
statutory five-month suspension period, so that they became effective and TCO
began collecting the rates set forth therein as of November 1, 1990,
conditioned on TCO's collection of its newly filed rates subject to refund.  On
May 31, 1991, TCO and Gulf filed new





                                     IV-34
<PAGE>   618
general rate proceedings (Docket Nos. RP91-161-000 and RP91-160-000,
respectively) (the "1991 Rate Case") and those rates become effective, subject
to refund, on December 1, 1991.  Thus, the 1990 Rate Case covers 13 months of
rates, 8 of which occurred pre- petition and 5 of which occurred post-petition.

                          a.  THE 1990 RATE CASE SETTLEMENT

          After conducting extensive pre-trial discovery and convening numerous
settlement conferences, TCO, Gulf and most of the other parties to the 1990
Rate Case entered a settlement which was filed with the FERC on April 16, 1992.
On October 15, 1992, the FERC issued its Order on Contested Partial Settlement
(the "FERC Rate Case Order"), pursuant to which the FERC approved the
settlement as fair and reasonable and in the public interest.  The FERC
rejected all requests for modifications to the settlement.  No requests for
rehearing of the FERC Rate Case Order were filed.

          The settlement provides that, subject to the Bankruptcy Court's
approval, TCO is to make refunds to its Customers of overcharges collected
during the period of the 1990 Rate Case.  The refund amounts represent the
difference between filed collection rates and settlement rates.  The settlement
amount is approximately $58.5 million plus FERC-prescribed interest to the date
of payment.  The Rate Case Refunds, together with interest thereon at the FERC
approved rates, were to be made within forty-five days of the later of (1) the
date the FERC Rate Case Order approving the Settlement became final or (2) the
date an





                                     IV-35
<PAGE>   619
order of the Bankruptcy Court approving the Settlement became final.  However,
if such final approvals were not obtained, the settlement would be invalidated
absent unanimous approval of the parties thereto.

          Although TCO has consistently taken the position that Bankruptcy
Court approval is not required for the settlement of matters pending before the
FERC, in May, 1993, TCO filed a motion with the Bankruptcy Court for approval
of the settlement of the 1990 Rate Case due to the importance of the settlement
to TCO's business and since the Rate Case Refunds related to pre-petition as
well as post-petition time periods.  The Creditors' Committee, while generally
recognizing the benefit of the settlement to TCO, opposed that portion of the
settlement which provided for the payment of refunds for the pre-petition
period refunds.

          On August 9, 1994, the Bankruptcy Court denied the motion for
approval on the grounds that it could not, absent a confirmed plan of
reorganization or a compelling business necessity, approve a settlement which
provided for the immediate payment of pre-petition claims.  An appeal of that
order filed by the Joint State Agencies is currently pending in the U.S.
District Court for the District of Delaware in Civil Action No. 94-497-JJF.

          The attached Customer Settlement Proposal, which provides for payment
of 80% of the amount due under the 1990 Rate Case Settlement for pre-petition
periods and 100% of the amount due





                                     IV-36
<PAGE>   620
for post-petition periods with interest as provided in the 1990 Rate Case
Settlement substantially preserves the effectiveness of the negotiated
settlement of the 1990 Rate Case.

                          b.  THE 1991 RATE CASE SETTLEMENT

          The Bankruptcy Court has approved a settlement of TCO's 1991 Rate
Case, as has FERC.  All of the rates and charges collected subject to refund
pursuant to the 1991 Rate Case filings relate to post-petition periods and all
of the refunds contemplated by the settlement have been made.

                8.        FERC FORUM LITIGATION GENERALLY

          The services TCO provides and the rates it charges for those services
are subject to extensive oversight and regulation by the FERC.  As a result, in
the normal course of its business, TCO is involved in numerous ongoing
regulatory proceedings before the FERC, as well as appellate proceedings
related to FERC orders.  These regulatory proceedings involve TCO's own rate
and certificate cases, i.e., proceedings initiated by applications filed and
prosecuted by TCO, as well as proceedings of other pipeline companies from
which TCO receives services, and rulemaking and other miscellaneous proceedings
initiated by the FERC.  Since the Petition Date, TCO has continued to file and
prosecute its own applications before FERC, to participate in other proceedings
in which it has an interest, and to settle such matters on notice to its
Creditors' Committee, without the need for Bankruptcy Court involvement in most
instances.  While the Customer Settlement Proposal resolves many outstanding





                                     IV-37
<PAGE>   621
regulatory proceedings involving TCO's right to recover costs from, and its
obligation to make refunds to, its customers, it does not address and resolve
certain other ongoing regulatory proceedings involving TCO's collection of
rates subject to refund in the ordinary course of its business.  TCO does not
expect the outcome of any such ongoing proceedings to adversely affect its
ability to operate as a financially viable company post reorganization.

          To the extent the Creditors' Committee has intervened or appeared in
any FERC proceeding involving or affecting TCO, or has filed appeals in
connection therewith, upon the Effective Date the Creditors' Committee shall be
deemed to have withdrawn and dismissed all such intervention, appearances
and/or appeals.

          C.    CUSTOMER SETTLEMENT PROPOSAL; TREATMENT OF REGULATORY AND OTHER
                CUSTOMER AND PIPELINE CLAIMS UNDER THE PLAN

          Annexed to the Plan as Exhibit "E", is a Stipulation and Agreement
filed contemporaneously herewith by TCO with the FERC (the "Customer Settlement
Proposal"), which sets forth the terms of a comprehensive settlement of
disputes between TCO, its Customers, and various state regulatory and consumer
agencies.  These disputes have been and are the subject of prolonged,
contentious, burdensome and costly litigation before the Bankruptcy Court, the
FERC and appellate courts for both of those forums.

          Numerous settlement meetings have been held over an extended period
of time with TCO's Customers' Committee, its affiliated and unaffiliated firm
transportation and storage





                                     IV-38
<PAGE>   622
customers, and many state regulatory and consumer agencies.  Extensive
documentation relating to the issues has been provided by TCO to the Customers.
The Customer Settlement Proposal represents a delicate balancing of multiple
and diverse interests that will collapse if its provisions are modified or
conditioned.  Any of the parties to the Settlement may disagree with the
resolution of any particular issue or proceeding underlying the Settlement.
However, the give and take of settlement negotiations among knowledgeable
parties has resulted in an overall settlement that is acceptable to all.
Further, TCO and the parties to the Settlement believe that it is in the public
interest, by resolving disputes over regulated rates and costs charged to
consumers of natural gas and permitting refunds to flow, by resolving in a fair
and equitable manner a multitude of proceedings before the FERC, the Bankruptcy
Court and appellate courts involving hundreds of millions of dollars that would
otherwise take years to reach a litigated resolution, and by facilitating,
through the recovery of costs, TCO's emergence from Chapter 11 as a financially
sound, ongoing concern.

          If approved by the FERC and the Bankruptcy Court, the Customer
Settlement Proposal will resolve, inter alia, as to Accepting Class 3.2
Claimants (and all other Supporting Parties as defined in the Customer
Settlement Proposal) the amount of substantially all pre-petition regulatory
refund claims asserted by Customers against TCO, and the amount of
substantially all Order No. 636 transition cost and other cost recoveries which





                                     IV-39
<PAGE>   623
have been sought by TCO from its Customers.  The liquidation of regulatory
refund Claim amounts, and of the transition cost recoveries, brings to
conclusion significant controversies affecting both the value of the TCO Estate
and the level of recoveries available from that Estate to non-Customer
Creditors.

          The willingness of what TCO believes will be a substantial percentage
in number and amount of its Customers to accept the Customer Settlement
Proposal greatly enhances the viability and will expedite the timing of TCO's
reorganization efforts.

          The Regulatory Claims (including all of the claims held by the GRI)
are classified together in Class 3.2 of the Plan.  Class 3.2 is impaired,
thereby requiring that the Class 3.2 claimants vote on the Plan.  Treatment of
the Class 3.2 Claims reflects proposed settlements embodied in the Customer
Settlement Proposal.

          Assuming the requisite number and amount of Customers holding Claims
in Class 3.2 vote to accept the Plan, those Customers who vote to accept the
Plan or execute a Waiver Agreement consenting to the settlement embodied in the
Plan described below (the "Accepting Customers") will receive by cash payments
or credits to rate mechanisms for (i) the remaining amounts owed by TCO to such
Customers in accordance with the Trust Fund Decision, with interest on trust
fund monies in accordance with the FERC Interest Order (Customers will receive
interest on refunds received by TCO pre-petition over the $3.3 million lowest
intermediate balance at the FERC prescribed





                                     IV-40
<PAGE>   624
V.       SUMMARY OF CLAIMS AND OTHER SIGNIFICANT ISSUES IN THE CHAPTER 11 CASE

         A.      PRODUCER CLAIMS

         Approximately 2,500 timely non-duplicative Claims have been filed
against TCO by Producers in connection with contracts pursuant to which TCO
purchased natural gas as part of its merchant function (described and discussed
in greater detail in Section I). Many of these Claims are for damages assertedly
suffered by Producers as a result of TCO's rejection of several thousand of
these gas purchase contracts. Approximately 4,100 contracts were rejected
pursuant to a motion filed contemporaneously with the Petition in Bankruptcy and
orders dated July 31, 1991 and August 22, 1991. An additional 400 contracts were
rejected by TCO in early 1992.

         In total, TCO served notice of these rejections and of applicable
Claims Bar Dates on more than 100,000 potential Claimants under such contracts
based upon an extensive search of its files to identify such potential
Claimants.(1) In addition, notice of these Bar Dates was provided by publication
in a variety of regional and national newspapers.

- ---------------
(1)    Notice of TCO's initial rejection in August 1991 and of the
       March 18, 1992 Bar Date was provided to primary parties to these
       contracts.  Similarly, primary parties to the second group of contracts
       to be rejected were notified of an April 17, 1992 Bar Date for Claims
       related to TCO's rejection of those contracts.  Finally, after a
       thorough search of its files to identify potential Claimants under all
       of its contracts, notice of an additional Bar Date of July 31, 1992 was
       provided.

                                      V-1

<PAGE>   625



         Also, by order dated February 10, 1994, the Bankruptcy Court approved
TCO's motion dated December 29, 1993 (i) authorizing TCO's rejection of
approximately 140 additional executory gas purchase contracts, (ii) declaring
that approximately 7,800 gas purchase contracts had been terminated pre-petition
and were not executory and (iii) setting a Bar Date of April 1, 1994 for the
filing of all claims arising under the rejected and terminated contracts.
Pursuant to the April 1, 1994 Bar Date, approximately 120 Claims were filed
totalling approximately $121,000,000.

         In addition to contract rejection Claims, Producers and others have
filed additional Non-Rejection Claims against TCO related to issues such as
take-or-pay obligations, underpayment for gas taken by TCO, NGPA Section 110
production-related cost reimbursements, tax reimbursements and other issues all
related to or arising from TCO's gas purchase contracts. These nonRejection
Claims are discussed more fully, infra.

         B.      ESTIMATION OF PRODUCER CLAIMS

                 1.       THE ESTABLISHMENT OF CLAIMS ESTIMATION PROCEDURES

         In addition to significantly overstating the value of their Claims,(2)
         the Producers' Claims as Filed were premised upon a variety of
         different theories as to the appropriate measure of damages and upon
         inconsistent or conflicting assumptions as to common facts or generally
         applicable legal principles. This was

- ---------------
(2)      The Claims as filed by Producers arising from Contracts with TCO total
         over $13 billion.


                                       V-2


<PAGE>   626



particularly true of contract rejection Claims. For instance, the treatment of
mitigation of damages, discounting to present value, treatment of contract
modification, future exploration and drilling varied greatly among Producers and
in some cases were ignored altogether. Some Claimants simply failed to explain
or support their Claims in any meaningful way, so that the methods, facts and
assumptions used in calculating their Claims are indiscernible from their
filings.(3)

         In order to provide for the quantification of the Contract Rejection
Claims and disputed Non-rejection Producer Claims on a fair, consistent,
efficient and relatively timely basis, TCO filed a motion on March 27, 1992,
asking the Bankruptcy Court to

- ---------------
(3)      On or about November 30, 1993, TCO mailed, on behalf of the Claims
         Mediator, a questionnaire to holders of Producer Claims subject to the
         Claims Estimation process more fully described below, seeking
         clarification of the nature of Claims which were ambiguous or
         incomplete as filed. The focus of the questionnaire was to elicit
         information regarding the nature and rationale of Producer
         Non-rejection Claims. A notice circulated with that questionnaire
         provided that claimants who did not respond to the questionnaire and
         define the nature of Claims asserted in their Proofs of Claim, would
         have their Claims (i) treated as Contract Rejection Claims only or (ii)
         expunged as being without basis. TCO subsequently filed a motion, after
         review of all questionnaires submitted, relating to claims as to which
         the questionnaires had been returned seeking (i) to limit certain of
         those proofs of Claim believed by TCO to consist only of contract
         rejection Claims, and (ii) to expunge claims where no adequate
         justification of any basis for liability had been demonstrated. By
         order dated November 2, 1994 and November 16, 1994, the Bankruptcy
         Court granted substantially all of the relief requested and declared
         most of the Claims to be only Contract Rejection Claims and expunged
         proofs of Claim which failed to set forth any basis for a Claim and as
         to which TCO could identify no liability on its books and records.


                                       V-3


<PAGE>   627



estimate Producer Claims for allowance pursuant to section 502(c) of the
Bankruptcy Code. TCO asserted that, absent estimation, the liquidation of
Producer Claims would unduly delay the administration of its reorganization and
would impose an extraordinary burden on the resources of TCO and the Bankruptcy
Court.

         As a result of extensive negotiations among TCO, the Creditors'
Committee and representatives of Producer-claimants over the appropriate
parameters of the Claims Estimation Procedures, the Bankruptcy Court entered an
order on August 27, 1992 (the "August 27 Order") conditionally approving
comprehensive procedures for the estimation of Producer Claims, and the
appointment of Charles P. Normandin of the law firm of Ropes & Gray located in
Boston, Massachusetts, to serve as the claims mediator (the "Claims Mediator")
for the estimation process. On October 9, 1992, the Bankruptcy Court entered its
order (the "October 9 Order") confirming the estimation procedures and
appointment of Mr. Normandin as Claims Mediator (the August 27 Order and the
October 9 Order are collectively referred to herein as the "Estimation Order").

         The Estimation Order contemplates the quantification of Producer Claims
generally through a two-stage process. The first stage consists of the
identification of generic issues (i.e., factual or legal issues common
to all or significant subsets of the Claims of a particular type);
determinations by the Claims Mediator regarding the appropriate resolutions of



                                       V-4


<PAGE>   628



those generic issues; and a recalculation of filed Claims based on these generic
determinations (the "Generic Recalculation") for those Producers Claims as to
which Generic issues have been identified.

         The second stage of proceedings contemplated by the Estimation Order
would permit interested parties to attempt to demonstrate that any amount
established in the Generic Recalculation for a particular Claim should be
revised upward or downward for purposes of final allowance under a plan of
reorganization, based on individual factual or legal distinctions as to the
particular gas contract or Producer warranting an adjustment for that Claim of
the recalculated results based upon the generic determinations. Following the
contract-specific determinations, the Claims Mediator is to issue a final
recommendation as to the appropriate amounts for allowance of Producer Claims.

         The procedures expressly invite settlement negotiations and the
liquidation of Claims based on resulting agreements, subject to a review by the
Claims Mediator and the approval of the Bankruptcy Court.

         The Estimation Order provides for a ninety day period following the
Generic Recalculation before TCO could request temporary allowance for voting
purposes of Claims based on that recalculation, but it also expressly preserves
TCO's right to propose temporary allowance of Claims at any time on any other



                                       V-5


<PAGE>   629



basis under Bankruptcy Rule 3018(a) in order to establish voting rights with
respect to its Plan.

          All recommended determinations of the Claims Mediator are to be
submitted to the Bankruptcy Court for approval, following which the Bankruptcy
Court may issue generic and contract-specific determinations and establish the
allowed amounts of each of the Producer Claims based upon the record generated
through the estimation procedures and the recommendations of the Claims
Mediator.

                 2.       STATUS OF CLAIMS ESTIMATION PROCEDURES

                          a.      GENERAL PROCEEDINGS

         On November 13, 1992, Mr. Normandin issued a set of Rules of Procedure
for Estimation of Producer Claims to govern the Claims Estimation Proceedings
and set dates for the initial phases of the Claims Estimation Proceedings. He
also retained, with court approval, John H. Norris of the law firm of Dickinson,
Wright, Mann, Van Dusen & Freeman, located in Detroit, Michigan, as natural gas
law counsel to the Claims Mediator, and Ronald Harrell of Ryder Scott Company
and John G. Redic of John G. Redic, Inc., petroleum engineers, as technical
expert advisers.

         Mr. Norris made presentations to Mr. Normandin as Claims Mediator on
the background and current status of natural gas law in December 1992 and
February, 1993. During that period, the parties voluntarily exchanged listings
of possible generic issues that might be decided by the Claims Mediator.



                                       V-6


<PAGE>   630



                          b.      PROCEEDINGS RELATING TO CONTRACT REJECTION
                                  CLAIMS

         From February 1993 through January 1995, a series of hearings was held
during which generic issues related to Contract Rejection Claims were addressed.
TCO, with the support of the TCO Customer Committee, advanced an approach to the
quantification of the rejection Claims based upon market evidence of the
economic value that the Producers had lost as a result of the rejection of their
long-term gas purchase and sale contracts (the "Market Value of Reserves
Proposal"). TCO proposed examining evidence of (i) transactions for the purchase
and sale of reserves dedicated under similar contracts; and (ii) negotiated
buyouts by pipelines of these types of contracts.

         The first type of data would permit a comparison of the average actual
market values of reserves-in-place subject to such contracts with the average
actual market values of uncommitted reserves, as established by transactions
involving the purchase or sale of reserves occurring within an appropriate
time-frame. The difference in market price between committed and uncommitted
reserves would reflect the value that the marketplace was attributing to these
types of long-term contracts. Similarly, the amounts paid between willing
parties for the elimination (by renegotiation to market-price levels or
termination) of long-term contractual obligations at prices in excess of market
levels would evidence the economic value that the market was placing on these
types of contracts pre-petition.



                                       V-7


<PAGE>   631



The implementation of this approach required discovery of information about
actual transactions for the purchase or sale of reserves and of negotiated
contract buyouts.

         The Producers strongly opposed TCO's Market Value of Reserves Proposal
and the possibility of discovery from them of the necessary information. In the
course of various conferences on issues relating to the recalculation of
Contract Rejection Claims, Mr. Normandin announced that TCO's Market Value of
Reserves Proposal merited further consideration and that discovery concerning
reserve transactions should occur. After significant negotiations regarding the
scope and handling of confidential data, that discovery was conducted and is in
the process of being analyzed by TCO.

         The Creditors' Committee attacked the TCO Market Value Reserves
Proposal on the ground that it would systematically understate this category of
Claims to the detriment of this group of unsecured Creditors relative to other
unsecured Creditors. The Creditors' Committee endorsed the DCF approach in
concept, but took no position on which, if any, of the conflicting proposals was
more appropriate or as to how that determination should be made.

         All the Producer proposals incorporated some form of a discounted cash
flow ("DCF") methodology for consideration by Mr. Normandin in estimating
rejection Claims. Pursuant to procedures established by the Claims Mediator, the
Producers submitted their proposals for the estimation of Contract



                                       V-8


<PAGE>   632



Rejection Claims on May 24, 1993. In addition to its Market Value of Reserves
Proposal, TCO advanced its own DCF approach.

         All submissions by TCO and individual and/or groups of Producers
suggested various simplifying assumptions to beincorporated in the DCF approach.
However, there was little agreement on what simplifying assumptions should be
used.

         In contrast to many of the Filed Claims, all of the proposals
recognized the need to discount to present value the projected lost future
revenue streams; the need to mitigate damages in light of the fact that the
Producers retained ownership of the gas and had the right to sell it to others;
the appropriateness of limiting speculative potential "fly-ups" of contract
prices; and the correctness of ignoring highly speculative possible production
from unproved reserves.

                                  (i)      HEARINGS ON THE DCF APPROACH ON
                                           PRICING AND DISCOUNT RATE

         The estimation hearings on the various DCF methodologies commenced on
July 14, 1993, at the offices of Ropes & Gray in Boston, Massachusetts, and
continued intermittently through July, August, September, October and November,
1993. The hearings addressed the Producer proposals in three segments: prices,
discount rates and volumes. The first ten and one-half days of hearings were
devoted to the presentation of argument and testimony on the appropriate
contract prices and market or mitigation prices to be used in the calculation of
lost revenue resulting from the rejection of the contracts.



                                       V-9


<PAGE>   633



         Various competing Producer pricing proposals were presented primarily
by (i) a coalition of certain Southwest producers (e.g., Union Pacific
Resources, Co. ("UPR")) and Appalachian producers (e.g., Ashland Exploration
Inc.), and (ii) Exxon Company USA ("Exxon"). The Southwest/Appalachian group
proposed using projected contract prices and actual spot market prices to
calculate damages for the period between July 31, 1991 and the date of the
Generic Recalculation (the "Gap Period"), taking the last contract price and a
twelve month average spot market price to establish differentials that would
then be projected for future periods over the life of the contracts. An integral
part of this proposal was the assumption that gas dedicated under many contracts
would have experienced a substantial increase in price on January 1, 1993, due
to deregulation pricing provisions in the contracts ("Fly-Up") and that
potential Fly Up should be reflected in the calculation of damages.

         Exxon proposed using the actual difference between the July 31, 1991,
contract price and the July 1991 spot market price, seasonally adjusted, for
each Producer as the damage differential assumed for all periods, using the
contract/mitigation price premium existing on the Petition Date as the per unit
dollar amount of rejection damages. The Exxon approach ignores any post-petition
fluctuations in the contract and/or market price levels.

         The Producer-participants, and Customers' Committee then presented, for
two and one-half days in August, 1993, evidence



                                      V-10


<PAGE>   634



on the appropriate discount rate to be applied. Producer-proposed discount rates
ranged from a risk-free investment rate of 8.5% per annum (reflecting the then
current government ten-year bond yield), presented by the Southwest/Appalachian
group, to a rate of 11.4% per annum based upon the average cost of capital for
natural gas production companies similar to those with Contract Rejection
Claims, presented by Exxon. The Customers' Committee presented evidence that
appropriate discount rates for the types of projected cash flows at issue in
these proceedings between 15% and 19% per annum, based upon actual practice in
the industry.

                              (ii)         PRODUCER PROPOSALS ON VOLUMES

         Over eleven days of hearings in September and October, 1993, the
Producers presented their proposals for determining the relevant volumes of
natural gas to be used in the estimation of damages for contract rejection. The
Producers generally agreed that the smaller claimants should be given the option
of adopting, without audit, the monthly volumes attributed to them in TCO's
previously defined LOR Study of August 1991. See Section III.B.5, "TCO's 1991
'Excess Supply Crisis'" for a discussion of the origin of the LOR. Otherwise,
the proposals differed significantly.

         Exxon proposed that each Producer-claimant be allowed to determine and
support for purposes of the proceeding its own total proved reserves (both
developed and undeveloped) as defined by the Society of Petroleum Engineers
("S.P.E.")



                                      V-11


<PAGE>   635



existing and dedicated to TCO as of July 31, 1991 (the "Proved Reserves"). With
minor adjustments to that total to obtain saleable gas quantities, the Producer
would then compute its monthly or annual deliverable volumes by applying an
exponential decline curve that would permit the production of all such reserves
during their expected life, if possible without exceeding in any future year the
greater of the quantities actually produced in the last year before the Generic
Recalculation or 80% of the quantities actually produced during the year prior
to the Petition Date. The Producer-claimant would then submit its calculations
with supporting documentation to the Claims Mediator.

         The resulting monthly (or annual) deliverable quantities would be used
in the Generic Recalculation of damages over the life of the relevant contracts.
Under this proposal, Producers would compute damages based upon total
deliverable quantities, so calculated, without regard to the differing
contractual commitments of TCO under the rejected contracts to take only
particular percentages of the total available.

         The Appalachian Producer group supported the Exxon proposal except that
under its methodology, damages would be calculated on Proved Reserves existing
as of the date of the Generic Recalculation, so as to give credit for
post-Petition activity by particular producers that increased their Proved
Reserves and, thereby, increased their damage claims.



                                      V-12


<PAGE>   636



         The Southwest Producer group proposed utilizing the quantities
forecasted for each Producer by TCO, in the course of its normal business, as
incorporated in the TCO volumes data base as of August 1991. Under this
proposal, errors or omissions in the volume forecasts could be corrected at a
Producer's initiative if the Producer could demonstrate that no engineering or
geological judgment would be required to conclude that there was an error or
omission and to correct for it (e.g., omissions or errors as to the
Producer's working interest, dedicated acreage or producing wells).

         The South Lake Arthur Producers proposed through their written
submission, without calling witnesses, that the Claims Mediator take the
historical amounts being delivered under the contracts as of the Petition Date
and apply generic decline curves (based upon producing regions and other
characteristics) to those levels of deliverability to generate post-petition
monthly volumes for purposes of the Generic Recalculation.

                             (iii)         TCO'S RESPONSE TO THE PRODUCERS'
                                           PROPOSALS

         In three days of hearings, commencing November 2, 1993, TCO outlined
how the Producers' DCF methodology should be implemented if it were to be used
instead of TCO's Market Value of Reserves Proposal. TCO asserted that a properly
implemented DCF approach to claims estimation would yield similar results to its
proposed market value approach.

         TCO proposed a method of estimating the contract/ mitigation price
differentials for each month under each



                                      V-13


<PAGE>   637



rejected contract that combined features of the various Producers' proposals.
TCO's goal was to identify a set of simplifying assumptions that could be easily
employed but that would still capture the relative benefits of the Producers'
various contracts. Thus, where available, the specified anticipated contract
price premium over market would be utilized. Otherwise, for the period from the
Petition Date to the Recalculation Date, the monthly differentials generally
would be derived from (i) the contract prices being paid immediately prior to
the Petition Date, (ii) any determinable and undisputed contract price changes
that would have occurred thereafter and (iii) mitigation prices based on
reported spot prices for the applicable regional delivery point adjusted for the
quantifiable benefit from the accelerated cash flow that resulted from the
rejection of particular contracts (i.e., from the ability to produce
above the daily contract quantity ("DCQ") level specified in the rejected
contract).(4)

         For the future period (post-Recalculation until the end of relevant
damages period), TCO proposed that the applicable monthly contract/mitigation
price differentials be the differences between the last determinable and
undisputed contract prices prior to the Recalculation Date (or the last contract
price being paid prior to the Petition Date) and the

- ---------------                                 
(4)      Under TCO's proposal, the benefit to the Producers would be reflected
         by adjusting the mitigation price upward.




                                      V-14


<PAGE>   638



average of the monthly mitigation prices for 12 months prior to the
Recalculation Date.

         TCO presented two alternative volumes proposals. First, TCO proposed to
use monthly deliverable volumes at the appropriate DCQ levels from the Petition
Date as utilized in the LOR study "LOR", infra, adjusted to reflect only
proved producing reserves existing as of July 31, 1991.

         Alternatively, TCO proposed that if it were determined that
non-producing proved reserves should be included in the Generic Recalculation of
claims, then proved reserve estimates contained in the Producers' existing SEC
filings should be used rather than estimates prepared for purposes of the
Estimation Proceedings.

         TCO proposed a post-tax discount rate of 16% per annum to reflect the
average cost of equity project financing for natural gas Producers. Finally, TCO
suggested that the resulting net present values be adjusted to reflect the
additional uncertainty and speculativeness of the resulting cash flow
projections so as to reflect the fair market value under established appraisal
standards of the contract rights that were lost by the rejection of the
contracts.

                              (iv)          PRODUCER REBUTTAL

         In November, 1993, certain Producers and Producer-groups offered
rebuttal testimony to TCO's presentation. Through expert testimony, these
parties offered various critiques of TCO's proposals for the implementation of
the Producers' DCF



                                      V-15


<PAGE>   639



methodology. Generally, the Producers asserted that the pricing and discount
rate proposals would result in lower Contract Rejection Claims than would the
Producer-proposed approaches.

         The Southwest Producers group supported the principle of using the LOR
to establish reserves for the purposes of the initial recalculation. All of the
Producers represented at the Claims Estimation hearings indicated that they
objected to the exclusion of proved non-producing reserves from the damages
calculation.

         The Producers uniformly objected to TCO's proposal to use pre-petition,
contemporaneous SEC proved reserve data. However, the testimony during the
surrebuttal presentation demonstrated that there were relatively few differences
between the SPE and SEC proved reserve definitions. The Producers' primary
criticism was that the use of pre-existing reserve reports denied Producers the
opportunity of issuing reserve reports and estimates prepared for the Estimation
proceeding. They also criticized TCO's SEC volumes proposal because it would
allow Producers who did not have pre-existing SEC reports to calculate their
reserves for the specific purpose of the Claims Estimation Proceeding while
depriving other Producers of the same opportunity.

                          c.      CONSIDERATION OF NON-REJECTION PRODUCER CLAIMS

         The principal Non-rejection Producer Claims include (i) take-or-pay
Claims ( i.e. assertions that TCO failed to pay for gas it did not take or make
payment for under its gas purchase



                                      V-16


<PAGE>   640



contracts) (ii) price deficiency Claims (i.e. assertions that TCO underpaid
Producers for gas taken because of disputes over the applicable contract price,
errors in measurement of the quantity of gas taken which have been discovered
and corrected), (iii) Claims that TCO took gas in the weeks or months
immediately preceding the Petition Date but made no payment therefor, and (iv)
miscellaneous other Claims related to the gas purchase contracts.

         Most of the Non-rejection Producer Claims are not subject to generic
determinations and will, therefore, be addressed in the Claims-specific phase of
the Estimation Proceeding.

                 3.       THE CLAIMS MEDIATOR'S INITIAL REPORT ON GENERIC ISSUES

         On October 13, 1994, Mr. Normandin issued his Initial Report and
Recommendations of the Claims Mediator on Generic Issues For Natural Gas
Contract Claims (the "Normandin Initial Report"), regarding the recommended
determination of generic issues for, and the methodology for recalculating and
quantifying, the contract rejection claims based upon a discounted cash flow
methodology. Mr. Normandin noted in his report that:

                 "While this recalculation will make it possible for the
                 Bankruptcy Court and the parties to analyze the claims in some
                 detail and on a comparable basis, the result of the
                 recalculation will not be final. Not all legal issues relating
                 to the claims are generic issues. There are claim-specific
                 issues, resolution of which will depend on the facts as to an
                 individual producer's claim, or the wording of a particular
                 contract. Claims cannot be finally estimated and allowed until
                 these claim-specific issues, too, are resolved." Normandin
                 Initial Report, p. 3.



                                      V-17


<PAGE>   641



          The Normandin Initial Report establishes as to Contract Rejection
Claims, a prefinanced discounted cash flow methodology, based on the
applicability of enunciated generic principles relating to pricing, volumes, and
discount rate, which producers are to use in recalculating those claims, subject
to extensive audits particularly in the area of existing and proved undeveloped
volumes claimed by the producers.(5)

         The generic principles applied to contract rejection claims include a
20-year study period, with an applicable discount rate of 10%. The Report
applies a single price differential to volumes expected to be produced over the
study period, using the difference between (a) the contract price as of the
Petition Date, and (b) the mitigation price for four producing regions as of the
Petition Date, adjusted to eliminate the effect of seasonality by using average
spot prices over a 12-month period ending with the Petition Date.

         Allowed volumes include all proved reserves as of December 31, 1991,
including proved undeveloped reserves ("PUDs") if planned as of the Petition
Date to be developed and producing prior to December 31, 1994. Audits of the
claim forms and of the underlying volumes data are required for most large
claimants, with a random selection of audits to be conducted for smaller
claimants. Mr. Normandin did acknowledge the usefulness

- ---------------                                 
(5)      The applicability of the Claims Mediator's DCF approach is also subject
         to his findings as to the applicability of TCO's Market Value of
         Reserves approach to estimating contract rejection damages.



                                      V-18


<PAGE>   642



of the LOR database and adopted those numbers as a secondary source for
establishing and auditing reserves:

                 "My conclusion that the primary source of data should be the
                 producer's records and files in no way implies a criticism of
                 the LOR database. The testimony of the TCO witnesses who were
                 responsible for assembling and maintaining the database was
                 credible, and I am convinced that, on the whole, it was
                 assembled and maintained in a careful and reasonably objective
                 manner... While I don't think that the LOR database should be
                 used as the primary source of information as to volumes, I do
                 think that it is an appropriate secondary source." Normandin
                 Initial Report at 121.

         As to non-rejection claims, the Normandin Initial Report finds TCO
obligated to producers for breach of its take or pay contracts, without any
reduction for unexpired take-on-pay recoupment rights. TCO is not liable,
however, for any take or pay claim for any contract year that had not expired
prior to the Petition Date, nor may any take or pay claim include claims for
severance taxes or Section 110 Costs. The report also includes forms for the
calculation of flowing gas and price and volume dispute claims.

         Mr. Normandin acknowledges that the generic nature of the recalculation
set out in his report will necessarily provide inaccurate damage values for
individual producers: "...[T]he estimation process may require that standardized
rules and procedures be applied in estimating claims, even though these may
result in some departure from the exact rules which would [be] applied and
procedure followed if individual claims were being liquidated." Normandin
Initial Report at 19. Specifically, Mr. Normandin notes that the use of a
modified



                                      V-19


<PAGE>   643



date of breach method "is not without flaws, and that the results it will yield
are not perfect." Normandin Initial Report at 86. Although he recommends the
method as fair, he acknowledges that it is "somewhat arbitrary". Normandin
Initial Report at 87.

         Following the issuance of his Initial Report, Mr. Normandin scheduled
follow-up hearings in November, 1994 and January, 1995 to consider comments on
the proposed recalculation forms, and certain specific objections to the Initial
Report. A further hearing was held on January 17, 1995, on the issue of the
appropriate mitigation price for Appalachian Basin gas. (At the time of the
Initial Report, Mr. Normandin mistakenly thought that there was agreement on
that issue among TCO and the Producers; after learning that that was not the
case, he scheduled an additional hearing on that matter.)

         On February 17, 1995, Mr. Normandin issued a Supplement to Initial
Report and Recommendations of the Claims Mediator ("Normandin Supplement"). The
Normandin Supplement incorporated agreed upon comments on the recalculations
forms and corrected typographical errors therein. The Normandin Supplement also
discussed and rejected several objections to the Normandin Initial Report,
including the treatment of royalty gas, the use of a generic decline curve to
schedule deliverability, the restriction on the use of post-July 31, 1991
geological data to calculate reserve estimates, and the use of the modified date
of breach method. The Normandin Supplement also recommended that



                                      V-20


<PAGE>   644



the appropriate mitigation price for Appalachian Basin gas be the index price at
Rayne, Louisiana plus sixteen cents (the cost of purchasing gas in the Southwest
plus the cost of transportation of the gas from the Southwest to Appalachia on
Columbia Gulf Transmission). Mr. Normandin rejected TCO's recommendation that
the Appalachian index price be used, agreeing instead with the Appalachian
producers that, although an Appalachian index would be generally favorable for
measuring a mitigation price for Appalachian Basin gas, that particular index
was not mature and/or liquid enough to represent a viable mitigation alternative
during the period one year prior to July 31, 1991.

         Mr. Normandin originally set April 21, 1995, as the return date for the
recalculation forms. At the request of TCO and several of the Producers, that
date was extended to May 19, 1995, because of expressions of concern from
Producers that they would be unable to meet the earlier deadline due to, among
other things, the difficulty of supplying the data in computerized form.

         The Normandin Report is specifically designated an "initial" report
because it is without prejudice to TCO's Market Value of Reserves methodology,
the legal and factual issues in regard to which remain to be heard by Mr.
Normandin. Mr. Normandin has established a schedule by which hearings on TCO's
Market Value of Reserves approach would be held in June 1995.



                                      V-21


<PAGE>   645



                             (i)  CONTRACT AND PRODUCER SPECIFIC ISSUES
                                  ("CONTRACT-SPECIFIC DETERMINATIONS") AND
                                  DEFENSES

         As anticipated in the Estimation Order, the Normandin-Initial Report
leaves many contract-specific issues for resolution subsequent to the Generic
Recalculation. Various parties may contend that the Generic Recalculations
overstate or understate the appropriate damages for particular Producers
depending upon their specific contract terms and conditions and related facts.
Certain contract specific issues can be anticipated. They include, but are not
limited to:

                 (a) Whether a particular market-sensitive contract with a
         periodic price redetermination clause would reasonably be expected to
         embody any systematic price premium over Market Value for the
         long-term.

                 (b) Whether prices in particular contracts would have
         experienced Fly-Up post-petition under the applicable contract
         provisions and the facts relevant thereto.

                 (c) Whether prices in contracts with no deregulation pricing
         provision generate any post-deregulation damages.

                 (d) Whether particular pricing provisions or volume provisions
         are too vague or indefinite under applicable state law to be
         enforceable.

                 (e) Whether post-recalculation damages under certain contracts
         are too speculative to calculate with any reasonable degree of
         certainty.



                                      V-22


<PAGE>   646



                 (f) Whether specific development plans for proved non-producing
         reserves were sufficiently definite as of the Petition Date to be
         allowed for damage calculations.

                 (g) Whether the contract between TCO and UPR entitles UPR to
         calculate damages on volumes of gas previously sold to a different
         purchaser from the same fields subject to the TCO contract.


         These contract-specific adjustments may increase or decrease damages
for individual claimants. As contemplated by the Estimation Order,
contract-specific Claims and defenses will be considered subsequent to the
Generic Recalculation.

         The Producer Claims involve a myriad of complex and difficult issues
the resolution of which, even in the context of an abbreviated procedure such as
estimation proceedings will take years to accomplish. The Claims Mediator's
generic determinations are only recommendations which must be adopted by the
Bankruptcy Court to become effective. Even if those recommendations are adopted,
questions will remain as to the relationship between the generic rules for
estimation and the liquidation of individual claims. In addition, there are
numerous issues specific to particular claims that have been expressly excluded
from the generic recommendations.

         C.      THE SETTLEMENT WITH VARIOUS PRODUCERS

         Commencing in December 1994, Columbia engaged in meetings with certain
producers with the largest claims against TCO to discuss means of achieving a
negotiated resolution of the



                                      V-23


<PAGE>   647



central issues in these proceedings. In February 1995, Columbia and TCO embarked
upon a series of meetings with the individual Producer Creditors holding the
larger Claims against TCO to present a settlement concept, the key features of
which were (i) that TCO would attempt to negotiate Allowed Claim amounts with
individual Producer Creditors or groups of Producer Creditors; (ii) the
settlements would be conditioned upon a TCO plan of reorganization supported
financially by CG that would contain a target payout of 72.5% of Allowed
Producer Claims and guarantee at least 95% of that target payout; and (iii) that
TCO and Columbia would guarantee in that Plan that all other Producer Creditors
would receive at least the same percentage payout as the settlors were to
receive on their Claims once liquidated and allowed either through settlement or
litigation. In the judgment of the Debtors, it was the willingness of TCO and
Columbia to assume the exposure and risk, and of Columbia to guarantee the
funding, with respect to the payment on equal terms of other Producer Creditors
that made the negotiations and, ultimately, the settlements possible.

         Following six weeks of intense negotiations, the Debtors reached
agreement in principle (the "Producer Settlement") with Producer Creditors
representing in the aggregate over 80% of the Debtors' estimate of the total
likely allowed amounts of Producer Claims (the "Settling Producers"). That
agreement provides for the Settling Producers' claims to be Allowed in a total
amount of $1.327 billion, with an expected payout of



                                      V-24


<PAGE>   648



$962.3 million and a minimum payout of $914.2 million. That agreement is
conditioned upon a confirmed plan of reorganization containing the terms that
are set forth in this Plan.

         D.      SETTLEMENT OFFERS FOR REMAINING PRODUCER CLAIMS

         The rights of other Producer Creditors to liquidate their Claims
through settlement or litigation are fully preserved. Any Producer that elects
to liquidate its Claim through litigation will be afforded the opportunity to do
so and will enjoy that opportunity much sooner because of the Producer
Settlement and attendant process.

         To expedite the process of the liquidation of the remaining Producer
Claims, TCO and the Creditors' Committee have worked together to generate a
schedule of settlement offers for all other Producer Creditors. TCO and
the Creditors' Committee expect that those offers will be attractive to and
accepted by large numbers of Producer Creditors with which TCO has been unable
to conduct individual negotiations. If so, then the process of estimating and
liquidating the Producer Claims will be expedited and simplified even further.

         To promote the objective of prompt and efficient liquidation of these
Producer Claims, the Schedule of settlement offers has been generated on a basis
believed to be highly favorable to the preponderance of remaining Producer
Claimants. The methodology underlying the Schedule, as further described below,
resolves numerous identifiable legal and factual disputes of general
applicability in favor of the Producer Creditors and



                                      V-25


<PAGE>   649



utilizes compromise on a few issues where a reasonable basis for identifying a
compromise position exists. At the same time, TCO recognizes that certain
Producers have individual issues of significance and that the data available to
TCO is not necessarily complete or fully accurate. Thus, individual Producers
may want, and will be given an opportunity if they so elect, to present their
own data and to litigate their individual issues.

         In 1991, TCO compiled an extensive data base containing production data
and delivery forecasts for all of its active gas supply contracts. That study
became known as the Life-of-Reserve or "LOR" study. The data base also contained
various assumptions concerning future contract prices under those contracts and
projections of future spot market prices for natural gas. That study generated
an estimate of the present value of the anticipated future costs in excess of
forecast spot-market prices for natural gas that was to be purchased by TCO
under the contracts. That estimate subsequently was used in August 1991, after
the filing of the bankruptcy petition, as a surrogate for possible contract
damages in taking a charge against earnings for the second quarter of 1991.
Subsequently, that data base was revised by TCO utilizing new computer
projection techniques contained in a software package named ARIES for volume
projections for Appalachian Producers.

         The Initial Report issued in October 1994 adopted an initial generic
approach for estimating damages for the



                                      V-26


<PAGE>   650



rejection of the gas supply contracts using different pricing and discount rate
assumptions than were used in the LOR. The utilization of those assumptions with
the LOR volume data results in higher estimated damages than the LOR study for
some producers and lower estimated damages for others.

         The Schedule of settlement offers was generated as follows: The
Schedule adopts Filed proof of claim amounts for Claims that TCO has concluded
were filed in appropriate amounts. For each other Producer rejection Claim, TCO
utilized the LOR volume data, modified when applicable by the ARIES program, and
computed two separate potential allowed Claims amounts, one utilizing the
pricing and discount rate assumptions of the LOR (the "LOR Amount") and the
other utilizing the corresponding assumptions recommended in the Claims
Mediator's Reports (with certain other issues resolved as discussed below) (the
"Normandin Amount"). Then, for each Producer, the Schedule incorporates the
higher of the LOR Amount or 103.45% of the Normandin Amount (reflecting an
assumed payout percentage of 75% rather than 72.5% as to that part of the Claim)
plus TCO's best estimate of that Producer's nonrejection Claims minus any
applicable setoffs or, where significant disputes appear to exist as to such
Claims or setoffs, TCO's best estimate of appropriate compromise amounts. For
the computation of the Normandin Amount, two issues on which the Claims
Mediator's Report did not make a recommendation, were treated as follows:



                                      V-27


<PAGE>   651



                 (i) the settlement offers assume no "flydown" to market levels
         of prices upon deregulation in contracts that contain no deregulation
         pricing provisions; and

                 (ii) the settlement offers treat contracts as containing Cost
         Recovery Clauses where the signatories opted out of the Enterprise
         Energy class action on generally the same terms as received under the
         settlement of that action by the producer class members.

         The data used to generate the settlement offers set forth in the
Schedule contains, for Appalachian Producers, no additions beyond what is
incorporated in the ARIES projections for proved, undeveloped reserves, to which
some Producers may be entitled under the Claims Mediator's Reports. Data with
respect to the amount or eligibility of such reserves for particular Producers
is not available to TCO. However, in the judgment of TCO, the pricing
assumptions utilized to generate the Normandin Amount provide several benefits
for Appalachian Producers that may not be attainable if the Claims were
liquidated through litigation. These benefits include the following:

                 (i) an additional increment to the Normandin Amount;

                 (ii) the use of a price premium of $.62 above market for
         contracts that specify a premium to be reflected in annual price
         redeterminations of $.50;

                 (iii) the use of a permanent above-market price differential in
         contracts as to which prices would be



                                      V-28


<PAGE>   652



         market-based when the market prices reached a certain level;

                 (iv) no "fly-down" to market upon deregulation for contracts
         that contain no deregulation pricing provision; and

                 (v) treatment of the Enterprise Energy opt outs on the
         compromise basis reflected in the Enterprise Energy class action
         settlement.

         Any Producer that elects to decline the settlement offer will be
entitled to liquidate its Claims through litigation, in which case TCO reserves
the right to assert its positions on all of the issues and defenses as to which
it has offered to compromise as part of the settlement offer and reserves its
rights as to any other issues that may arise in that litigation.

         E.      NON-PRODUCER CLAIMS

         While several Bar Dates have been set for Producer Claims, March 18,
1992 is the only Bar Date established thus far for most Non-Producer Claims.
Approximately 2,900 of the proofs of Claim Filed have been classified by TCO as
Claims which do not arise from or relate to gas purchase and sales contracts,
and are generally referred to as "Non-Producer Claims".

         TCO has expended considerable resources in reviewing and reconciling to
TCO's books the Non-Producer Claims to ensure a high degree of accuracy in
deciding whether the Claims Filed are proper as Filed or are objectionable. As a
result of this detailed review and pursuant to the Court's order dated



                                      V-29


<PAGE>   653



December 17, 1992, establishing guidelines for procedural objections to Claims
and settlement parameters for Claims liquidation (the "Procedural Order"), TCO
has Filed two Omnibus Procedural Objections seeking to disallow over 1,000
Non-Producer Claims on the basis that the Claims were Filed after the Bar Date,
are duplicates of other Claims, were amended by subsequent amending Claims, are
unsigned, have already been paid pursuant to Bankruptcy Court orders, or
asserted no basis for a Claim and as to which TCO's books and records reflect no
liability. The relief requested by TCO in those two Omnibus Procedural
Objections has been or, TCO believes, will be substantially granted by the
Bankruptcy Court.

         TCO's review of Non-Producer Claims to date has resulted in the
resolution of disputes and the liquidation for allowance purposes of virtually
all of the Non-Producer Claims. To the extent Disputed Non-Producer Claims are
not resolved by settlement, TCO will continue to prosecute procedural and
substantive objections before the Bankruptcy Court, and believes it can, if
necessary, achieve thereby an Allowed level of Claims reflective of the levels
for such Claims recorded in the proposed Payout Analysis annexed hereto as
Exhibit 2.

         Non-Producer Claims (apart from TCO's secured and unsecured obligations
to Columbia) can be categorized into five groups. These groups are (a) Customer
Claims, See Section IV.B.1., (b) upstream pipeline supplier Claims, See Section
IV.B.2., (c) taxing authority Claims, (d) accounts payable/trade debt



                                      V-30


<PAGE>   654



Claims and (e) miscellaneous Claims (including Claims arising in connection with
non-gas contract related litigation). In addition, there are several individual
Claims of governmental agencies that because of their magnitude are separately
described, such as the Claims of the IRS, the EPA and the PBGC.

         As with all of the Claims, TCO undertook a careful review of the
Non-Producer/Non-Customer Claims by first identifying the general nature of the
Claim, then assigning that Claim to the appropriate department within TCO, and
then having each Claim analyzed in more detail by individuals in the department
assigned. Each Claim was reviewed to identify the need and basis for an
objection, if any. The Claim amounts were compared with TCO's books and records
to determine the amount of discrepancy between TCO's and Claimant's positions.
TCO made efforts with virtually every Claimant to reconcile or settle the Claim.

         In those instances where no settlement could be achieved, the reviewing
department, with the assistance of the Finance and Law Departments as necessary,
was asked to determine an amount that TCO should propose in order to liquidate
each Claim based upon its review of all records available, communications with
the Claimant and appropriate legal analysis. TCO or Reorganized TCO will
continue in its effort to liquidate the Claims held by holders of unliquidated
General Unsecured Claims that did not accept the Allowance Amounts proposed for
their Claims by objecting to such Claims in the Bankruptcy Court, to the extent



                                      V-31


<PAGE>   655



that TCO has not already objected to such Claims or through settlement of such
Claims.

                 1.       STATE AND LOCAL TAXES

         A substantial portion of the Claims relating to TCO's pre-petition
state and local property tax liabilities have been paid in full pursuant to
Bankruptcy Court orders characterizing those liabilities as secured or
administrative obligations. Remaining Claims of state and local taxing
authorities represent about 150 proofs of Claim, totalling approximately $23.7
million as Filed. Those Claims which TCO has not been authorized to pay in full
are being liquidated on the basis of assessments and invoices from the taxing
authorities.

         Additionally, TCO has included an estimated Allowed Claim for
approximately $2.2 million for Priority Tax Claims, and approximately $6.85
million principally related to Claims by the State of West Virginia for property
taxes which under Court orders are treated as Unsecured, non-Priority Claims and
for unsecured penalties asserted where they relate to taxes which are Allowed
Secured Claims. The State of West Virginia appealed the ruling on the status of
its Claim to the U.S. Court of Appeals for the Third Circuit which upheld the
lower Court's decision. The State of West Virginia has filed a petition for a
writ of certiorari with the United States Supreme Court. The Priority Tax Claims
also include state income taxes, state sales taxes, state use taxes and other
miscellaneous state and local taxes.



                                      V-32


<PAGE>   656



         In order to liquidate certain tax claims, on April 4, 1994, TCO filed
its Omnibus Objection to Certain Tax Claims concerning about 180 Claims by
various taxing authorities. Virtually all of the Claims were disallowed in whole
or in part. The Claims for penalties on secured taxes were reclassified to
unsecured, non-Priority Claims or subordinated to Unsecured Claims. TCO believes
the remaining Tax Claims are not valid for various reasons and is attempting to
have those Claims withdrawn, or if necessary, will file objections to those
Claims.

         State and local tax obligations are treated as unclassified Priority
Claims, or as Unsecured Claims in Classes 3.1 or 3.4. Approximately $230,000 of
non-compensatory penalty Claims, which have been subordinated by orders of the
Bankruptcy Court, are treated in Class 3.1 or Class 3.4 under the Plan because
TCO, with the consent of the Creditors' Committee, has agreed to waive
enforcement of such subordination.

                 2.       ACCOUNTS PAYABLE/TRADE DEBT

         Claims arising from the purchase of miscellaneous goods and services
represent approximately 1,120 proofs of Claim in the amount of about $20
million. TCO's books and records reflect liabilities of approximately $24
million as of December 31, 1994, including amounts listed on TCO's Schedules of
Liabilities as undisputed, liquidated and not contingent, as to which no proofs
of Claim were filed. Fewer than twenty of the Claims Filed are for an amount
which exceeds TCO's valuation of the Claim, or which assert a priority or
secured status with which



                                      V-33


<PAGE>   657



TCO disagrees, or which have not yet been liquidated by agreement or withdrawn,
and Allowance Amounts are proposed in the Plan for these Claims. The amount
asserted for those Claims yet to be liquidated is less than $6.0 million.
Allowed Claims are treated under the Plan in Classes 3.1 and 3.4 as appropriate.

                 3.       MISCELLANEOUS CLAIMS

         Claims arising from issues not otherwise categorized account for the
remaining 380 Claims, and generally relate to ordinary-course obligations or
transactions arising from TCO's business. Generally, these Claims assert: (1)
personal injury liability, whether litigation was initiated pre-petition or not;
(2) property damage, primarily related to TCO's ongoing use of property under
leases and rights of way for its pipeline operations; (3) condemnation damages
arising from TCO's exercise of its right of eminent domain for natural gas
pipelines and storage facilities; (4) indemnity Claims by employees and officers
as well as Claims for benefits; (5) Claims by states based upon abandoned
property or escheat laws; (6) advance payments for construction, and (7) other
Claims which do not exceed $100,000.

         TCO is proceeding to liquidate by settlement or objection filed with
the Bankruptcy Court, or have the Claimants withdraw, virtually all of the
Claims in this category. The Allowance Amounts proposed by TCO for unliquidated
Claims are set forth on a schedule to the Plan in the appropriate Classes for
these



                                      V-34


<PAGE>   658



Claims. These Claims are treated as Class 3.1 or 3.4 Claims, except for
indemnity and condemnation Claims which are to be assumed pursuant to the
treatment provided for Unclassified Claims and Class 4.2, respectively.

                 4.       KENTUCKY WEST VIRGINIA GAS COMPANY CLAIM

         After conducting numerous settlement negotiations, TCO and Kentucky
West Virginia Gas Company ("Kentucky West") entered into a settlement agreement
which settled, inter alia, (i) all issues, claims and matters by and between
Kentucky West and TCO arising in FERC Docket Nos. TQ89-1-46, et al.,
RP86-165-000, et al. and RP86-166-000, et al. (the "Kentucky West Filings");
(ii) claims relating to TCO's rejection of a Rate Schedule PLS-1 Contract (the
"PLS-1 Contract") pursuant to an order of the Bankruptcy Court dated November 6,
1992; (iii) claims for unpaid pre-petition demand charges accrued under the
PLS-1 Contract; and (iv) issues regarding the restructuring of certain services
provided among Kentucky West, TCO and Equitrans, Inc. On February 17, 1993, the
FERC approved the settlement, as clarified and conditioned by the FERC, pursuant
to an Order Accepting Contested Settlement As Clarified. On June 22, 1993, the
Bankruptcy Court entered an order approving the settlement.

         As part of the Kentucky West Filings, Kentucky West sought to directly
bill TCO over $57 million, plus interest, for gas costs arising from the
repricing of Kentucky West's company-owned production to reflect prices set in
accordance with the Natural Gas Policy Act (as interpreted by the Supreme Court
in


                                      V-35


<PAGE>   659



Public Serv. Comm'n of New York v. Mid-Louisiana Gas Co., 463 U.S 319, 103 S.
Ct. 3024 (1983)) for the period of December 1, 1978 through March 2, 1983.
Kentucky West filed a proof of claim in TCO's case in the total amount of
$67,334,312 based on the Kentucky West Filings. The settlement allows Kentucky
West an unsecured claim of $19 million for gas repriced pursuant to the NGPA for
the period of December 1, 1978 through March 2, 1983.

         Another element of the settlement relates to damages arising from the
rejection of the PLS-1 Contract, the pre-petition contract that governed the
terms of TCO's purchases of gas from Kentucky West. On November 6, 1992, the
Court approved TCO's rejection of its PLS-1 Contract effective as of September
30, 1992. Pursuant to the terms of the settlement, Kentucky West is allowed an
unsecured claim of $7 million representing the damages arising from the
rejection of the PLS-1 Contract. The settlement also provides that Kentucky West
is permitted an unsecured claim in the amount of $166,083 for pre-petition
demand charges TCO incurred during June and July, 1991.

         Pursuant to the settlement, Kentucky West dismissed all direct billing
claims against TCO in the Kentucky West Filings in addition to any other FERC or
court proceedings involving Kentucky West's right to recover company-owned
production for the period of December 1, 1978 through March 2, 1983. TCO also
dismissed various actions pending before the United States Court of Appeals for
the District of Columbia and the Fifth Circuit



                                      V-36


<PAGE>   660



Court of Appeals regarding the review of the FERC's orders permitting direct
billings for repriced gas and withdrew its opposition to Kentucky West's right
to recover direct billing claims for the repriced production for the period
December 1, 1978 through March 2, 1983.

         Kentucky West's Claims are Classified in Class 3.4.

                 5.       IRS AND OTHER PRIORITY TAX CLAIMS; AFFILIATE TAX
                          CLAIMS

         Pursuant to section 507(a)(8) of the Bankruptcy Code, Allowed Unsecured
Claims relating to certain income taxes, property taxes, employment taxes, and
certain other types of taxes are Priority Tax Claims.

         On or about March 13, 1992, the Internal Revenue Service (the "IRS")
timely filed four duplicative proofs of claim against TCO, each in the amount of
$553,728,311.39 (the "IRS Claims"), as well as identical Claims against
Columbia. The IRS Claims asserted claims for income taxes plus penalties and
interest, for the taxable years ending 1980, 1981, 1983, 1985, 1986, 1987, 1988
and 1990 and for excise taxes (Form 720) for the period ended June 30, 1991 and
protective claims for pension excise taxes. The IRS Claims asserted that (i)
$11,667,918.33 constituted a secured claim by virtue of a set-off of refunds due
for the taxable years 1979, 1982 and 1989, (ii) $461,884,205.75 constituted an
unsecured priority claim, and (iii) $80,176,187.31 constituted a general
unsecured claim.

         Columbia disputed both the amount and priority of the IRS Claims and
engaged in extensive negotiations, along with TCO and



                                      V-37


<PAGE>   661



the IRS, over the IRS' claims. Ultimately Columbia, and its subsidiaries,
including TCO, entered into a settlement with the IRS covering income taxes,
excise taxes (Form 720) and pension excise taxes.

         The principal federal income tax issues raised by the IRS Claims
consisted of (i) IRS objections to the treatment by TCO of approximately $850
million in payments made by TCO to producers under the Producer Price Reduction
Purchase Plan ("PPRPP") and for other similar payments to producers from 1985 to
1987 in order to obtain price and take-or-pay reductions and for other contract
reformation costs under gas purchase contracts which TCO had with such
Producers; (ii) TCO's ability to deduct in certain tax years expenses that had
previously been included in the valuation of its book and tax LIFO inventory
layer, and (iii) as to TCO as well as other members of the Columbia Group,
questions relating to the deductibility of software development costs incurred
during the taxable years 1985 to 1990.

         The settlement agreement with the IRS, documented in the Department of
the Treasury - Internal Revenue Service Agreement as to the Final Determination
of Tax Liability with the IRS (the "Closing Agreement"), was approved by the
Joint Committee on Taxation of the United States Congress on June 30, 1994 and
was approved by an Order of the Bankruptcy Court dated October 12, 1994.



                                      V-38


<PAGE>   662



         The IRS settlement reduced the IRS' Claims for the Columbia Group as a
whole from $553 million to $111,902,703.00 plus post-petition interest (of
approximately $24.6 million through December 31, 1995) to be calculated pursuant
to the Closing Agreement, and the Bankruptcy Court's order approving the
settlement allowed the IRS' claims as priority claims under 11 U.S.C Section
507(a)(8) against both Columbia and TCO. It is anticipated that future tax
benefits arising from the payment of the IRS' Claim (the "turnarounds") will
reduce the effective cost of the settlement to approximately $68.2 million,
including post-petition interest through December 31, 1995.

         The consolidated income tax regulations provide that each member of the
Columbia Group is severally liable for the entire consolidated tax liability of
the Group. However, the Debtors intend to allocate the tax savings and costs
engendered by the IRS settlement in accordance with their Tax Allocation
Agreement (the "TAA"), which both Columbia and TCO are seeking to assume
pursuant to their respective plans of reorganization. As a result, TCO, as the
taxpayer primarily responsible for generating the tax liabilities, will fund the
payment to the IRS, including post-petition interest, and receive its allocable
share of the turnarounds. Net Refunds allocable to Columbia and its non-debtor
subsidiaries which have been offset by the IRS against its Claim will be paid by
TCO to those entities as a cure cost under the TAA, if the Bankruptcy Court
approves the assumption of the TAA. It is estimated that under the TAA, TCO



                                      V-39


<PAGE>   663



will owe approximately $134.6 million plus post-petition interest of
approximately $29.6 million through December 31, 1995, and that other members of
the Columbia Group will be entitled to a refund of approximately $22.7 million
plus post-petition interest of approximately $5.0 million. After taking into
account various turnarounds for the period 1991 through 1995, the net cost of
the settlement to TCO is approximately $76.8 million, including interest through
December 31, 1995 and the net result to other members of the Columbia Group is a
refund of approximately $8.6 million, including interest through December 31,
1995.

         At the time the Bankruptcy Court approved the Closing Agreement, it
also approved an agreement between Columbia, TCO and TCO's Unsecured Creditor's
Committee that in the event the Bankruptcy Court failed to approve the
allocation of post-petition interest to TCO pursuant to the TAA or otherwise,
Columbia and/or its non-debtor subsidiaries would be obligated to make that
payment to the IRS.

         In the event that the Bankruptcy Court does not approve the assumption
of the TAA as an executory contract, in accordance with section 365 of the
Bankruptcy Code, the amounts claimed against TCO under the TAA by Columbia
and/or its non-debtor subsidiaries will be Affiliate Tax Claims classified in
Class 4.5 of the Plan and will be assumed by Reorganized TCO and paid in cash
when and if due.



                                      V-40


<PAGE>   664



         In addition to the $2.2 million of state and local Priority Tax Claims
described above in subsection 1, this Class includes also a $700,000 annual
pipeline safety fee payable to the United States Department of Transportation.

                 6.       PENSION CLAIMS

          Columbia has a pension plan known as the Retirement Income Plan for
the Columbia Gas System Companies (the "Retirement Plan") for certain employees
of Columbia's participating subsidiaries, including TCO. The Retirement Plan is
governed by Title IV of Employee Retirement Income Security Act of 1974
("ERISA"). To date, all contributions required to be made to the Retirement Plan
and all premiums due to the Pension Benefit Guaranty Corporation ("PBGC")
pursuant to section 4007 of ERISA, whether pre-or post-petition, have been paid.

         The PBGC, however, filed three proofs of Claim (the "PBGC Claims")
against both Columbia's and TCO's estates. The first proof of Claim asserts a
priority Claim pursuant to sections 507(a)(1) and (7) in the estimated amount of
$150 million for statutory termination liability which is contingent upon, among
others, the termination of the Retirement Plan prior to the confirmation of a
plan of reorganization.

         The second Claim filed by the PBGC is for contributions required to be
made to the Retirement Plan pursuant to sections 302 and 4062(c) of ERISA and
the third Claim is for future premiums to be paid to the PBGC pursuant to
section 4007(a) of ERISA. Both of these Claims were filed in unliquidated
amounts



                                      V-41


<PAGE>   665



and the PBGC has asserted that at least portions of each of the Claims are
entitled to priority pursuant to section 507(a)(1) of the Bankruptcy Code.

         TCO, Columbia and representatives of the PBGC have reached a
preliminary, informal agreement that if TCO and Columbia (i) continue to make
the required contributions to the Retirement Plan pursuant to section 302 of
ERISA, (ii) pay all premiums due to the PBGC pursuant to section 4007 of ERISA,
and (iii) do not terminate the Retirement Plan prior to the earlier of the entry
of orders confirming plans of reorganization or other orders of the Bankruptcy
Court, the PBGC will withdraw the PBGC Claims.

         In fact, the Plan contemplates that all pension-related obligations
will be assumed by Reorganized TCO. At this time, TCO does not believe any
modifications will be made to the existing Retirement Plan. Thus, the PBGC
Claims are expected to be withdrawn, or disallowed as of the Effective Date of
this Plan.

                 7.       ENVIRONMENTAL ISSUES

         TCO is subject to complex state and federal environmental regulations
that impact its operations over approximately 18,900 miles of pipeline,
approximately 300 active or retired compressor stations and support facilities,
an estimated 15,000 points at which pipeline liquids are or were removed, and
numerous support facilities in eleven states and four regions of the U.S.
Environmental Protection Agency ("EPA"). An objective of the Plan is to insure
that Reorganized TCO emerges from



                                      V-42


<PAGE>   666



bankruptcy appropriately postured to comply with all applicable environmental
regulatory requirements as well as to remedy the environmental impacts of its
past operations.

         TCO has been engaged, prior and subsequent to the Petition Date, in a
comprehensive assessment of the environmental liabilities associated with its
current and past operations. This assessment involves site screening,
characterization and remediation activities. TCO's management has retained
outside counsel and environmental consultants to assist in its environmental
assessment program.

          Although TCO initiated its environmental assessment on a voluntary
basis, it has sought to involve the various appropriate governmental
environmental agencies in its characterization and remediation activities in
those jurisdictions with the greatest concentrations of its facilities and
operations. Representatives of TCO have met regularly with representatives from
the various environmental agencies, including the EPA and the environmental
agencies for the states of Pennsylvania, West Virginia and Kentucky in
furtherance of developing plans acceptable to those agencies for the
characterization and remediation of those TCO facilities that are or may be
contaminated. While meetings have been held with representatives of the New
York, Ohio and Virginia environmental agencies, no regular participation in
characterization and remediation activities has yet been secured from these
states' environmental agencies.



                                      V-43


<PAGE>   667



         On November 16, 1994, the Bankruptcy Court approved three settlements
with various governmental environmental agencies which include the EPA, the
Kentucky Natural Resources and Environmental Protection Cabinet (the "Kentucky
Cabinet") and the Pennsylvania Department of Environmental Resources (the
"PADER").

         The settlement with the EPA (the "EPA Settlement") provides for TCO's
continuation of its comprehensive environmental assessment and remediation
program, TCO's reimbursement of the EPA's oversight costs incurred in connection
with the implementation of the remediation program and the settlement of
litigation regarding TCO's alleged violations of the Toxic Substances Control
Act ("TSCA").

         The first part of the EPA Settlement is a consent order pursuant to
which TCO has agreed to continue its comprehensive environmental assessment and
remediation program. Under the consent order, TCO will be responsible for
investigating its sites along the pipeline for environmental contamination,
reporting the results to the EPA and conducting any necessary clean-up
activities in compliance with the terms of the consent order. Throughout the
duration of the program, the EPA will oversee TCO's progress. TCO will be
responsible for reimbursing the EPA for its costs incurred in connection with
the oversight of TCO's remediation program as administrative expense claims.

         The second part of the EPA Settlement resolves a complaint filed by the
EPA which sets out 107 counts of alleged violations



                                      V-44


<PAGE>   668



of TSCA by TCO with regard to the use and disposal of PCBs at various sites
along the pipeline spanning both pre- and post-petition time periods. In the
complaint, the EPA alleged that TCO was liable for over $8.4 million in
penalties. In accordance with the second part of the EPA Settlement, TCO has
paid the EPA a civil penalty of $4,916,472 as an administrative expense claim in
full settlement of the alleged violations of TSCA.

         TCO's settlement with the Kentucky Cabinet (the "Kentucky Settlement")
is similar to the EPA Settlement and is also comprised of two parts. The first
part of the settlement provides that TCO will continue its environmental
remediation program at certain sites located within Kentucky and the Kentucky
Cabinet will oversee TCO's progress. TCO is obligated to reimburse the Kentucky
Cabinet for (i) its claim for pre-petition oversight costs of approximately
$30,000 as an administrative expense claim under the Plan, (ii) its claim for
all post-petition oversight costs of approximately $71,000 as of November 16,
1994 as an administrative expense within 30 days of the effectiveness of the
Kentucky Settlement, and (iii) all future oversight costs as administrative
expenses.

          The second part of the Kentucky Settlement addresses TCO's penalty
obligations for its alleged violations of various Kentucky environmental laws
and regulations. Prior to January 1, 1994, the Kentucky Cabinet had issued
fourteen notices of violations to TCO alleging that TCO had violated various



                                      V-45


<PAGE>   669



Kentucky environmental laws and thus was liable for penalties ranging from
$1,000 to $25,000 per day per violation. In settlement of these notices of
violation, TCO paid the Kentucky Cabinet $50,000 as an administrative expense
claim.

         The settlement with the PADER (the "PADER Settlement") provides that
TCO is to reimburse the PADER for (i) its pre-petition oversight costs of
$53,384 as administrative expenses under the Plan; (ii) post-petition oversight
costs of $27,622 incurred as of May 31, 1994 as administrative expenses 30 days
after the effectiveness of the PADER Settlement; and (iii) all post-petition
oversight costs incurred after May 31, 1994 to be paid within 60 days of receipt
of the PADER's invoice for such costs as administrative expenses. For any 12
month period, TCO's reimbursement obligations are limited to the lesser of
$200,000 or $20,000 per site.

         It is TCO's management's continued intent to address environmental
issues with the cooperation of regulatory authorities in a mutually acceptable
manner. TCO concluded initially in the bankruptcy proceedings that protracted
conflict with environmental agencies over the issue of dischargeability of
Claims of such agencies would be non-productive. It was determined by TCO's
management that the long-term interests of the company and its Creditors would
be best served by effectively addressing environmental liability issues and
resolving these in a manner acceptable to the state and Federal environmental
enforcement and regulatory agencies and to TCO.



                                      V-46


<PAGE>   670



In doing so, it was TCO's intention to assume liability associated with Claims
that may have been held by such agencies for the investigation or clean-up of
environmental contamination caused by past operations of TCO, with the exception
of non-consensual prepetition environmental penalty liabilities. Proceeding in
this manner also inures to the benefit of TCO's Creditors by not burdening the
bankruptcy proceedings with potentially protracted disputes over environmental
issues with complex questions of damages and dischargeability, and it relieves
the Creditors from sharing their recoveries with potentially sizeable
pre-petition and accelerated post-petition environmental Claims.

         To this end, on January 3, 1992, TCO disseminated a "Notice of Bar Date
for Filing Proof of Claim" as ordered by the Bankruptcy Court. The notice
specifically provided that state and federal environmental agencies were not
required to file proofs of Claims in order to preserve environmental Claims
against TCO. Additionally, letters were sent by TCO management to the EPA and
all state environmental agencies in the states in which TCO maintains
facilities, stating that these agencies would not be bound by the Bar Date in
the bankruptcy proceeding.

         On March 14, 1994, Columbia Gas Transmission Corporation filed a
declaratory judgment action against Aetna Casualty & Surety Company, American
Re-Insurance Corporation, Continental Casualty Company, Employer's Liability
Assurance Corporation, The Home Insurance Company, Lexington Insurance Company,
Certain



                                      V-47


<PAGE>   671



Underwriters at Lloyd's, London, London Market Insurance Companies, North Star
Reinsurance corporation and St. Paul Indemnity Insurance Company in the Circuit
Court of Kanawha County, West Virginia (Civil Action No. 94-C-454) seeking
recovery under various insurance policies for environmental cleanup costs
incurred (or to be incurred by TCO). Standstill agreements were entered into
with The Travelers Insurance Company and Associated Electric & Gas Insurance
Services, Limited (AEGIS).

         The parties are currently engaged in extensive fact discovery related
to the cleanup and other costs incurred or to be incurred by TCO. No trial date
has been established as of yet.

         In furtherance of TCO's strategy for addressing its liabilities to
governmental environmental agencies, the Plan classifies all such Claims in
Class 4.1. Pursuant to the Plan, Class 4.1 Claims will not be affected by the
Confirmation Order and, therefore, will continue to be liabilities of
Reorganized TCO post-confirmation which will be paid when due and payable. The
Plan also provides that such post-confirmation liabilities include those under
the EPA Settlement, the Kentucky Settlement and the PADER Settlement and will be
paid in accordance with the terms of such settlements.

         Primarily as a consequence of its self-assessment program, TCO has
accrued environmental liabilities of approximately $178 million as of December
31, 1994 (which are reduced by



                                      V-48


<PAGE>   672



approximately $45 million previously spent on these issues). TCO has also
disclosed that as characterization and site-specific activities progress and the
nature and extent of contamination along the pipeline, at compressor stations
and support facilities becomes better defined, additional liabilities will be
recorded. To the extent that plans for assessment and remediation of
contamination require approval of Federal and/or state authorities, they may be
subject to revision. Until assessment progresses further, management lacks
sufficient data to predict the magnitude of all required costs.

         Based on the data now available and on various assumptions as to
characterization and required remediation, TCO's management currently estimates
that the environmental assessment and remediation program may take ten to twelve
years to complete and cost approximately $20 million per year. As part of this
program, TCO and its environmental consultant are pursuing an ongoing study of
possible environmental contamination and remediation. TCO's estimates of these
remediation costs and the time period for completing that work are expected to
be revised as this ongoing study progresses. The financial projections included
herein assume that earnings will continue to be charged appropriately in advance
of required expenditures. The cost of additional and future environmental
clean-up by TCO is impossible to estimate due to (1) the unknown magnitude of
possible contamination; (2) the possible effect of future legislation; (3) the
possibility of future litigation; (4) the



                                      V-49


<PAGE>   673



possibility of future designations as a potentially responsible party under
CERCLA and the difficulty of determining liability, if any, in proportion to
other responsible parties; and (5) the effect of possible technological changes
related to future cleanups.

         The Customer Settlement Proposal addresses certain aspects of TCO's
ability to seek to recover environmental costs through its rates, but does not
resolve all such issues. All penalties, however, are not recoverable by TCO from
Customers. Nonetheless, TCO believes that such matters will not have a material
adverse effect on its financial position and post-reorganization operations, due
in part to the projected recoverability in rates of most of its environmental
expenditures and/or from its insurers and the long period over which such
expenditures will be made.

         F.      MISCELLANEOUS ADMINISTRATIVE PROCEEDINGS

                 1.       COMMENCEMENT OF THE CASE

         On the Petition Date, Columbia and TCO each filed a voluntary petition
under Chapter 11 of the Bankruptcy Code. Since the Petition Date, TCO's
Reorganization Case has been pending before the United States Bankruptcy Court
for the District of Delaware. TCO has continued to manage its properties and
operate its businesses as a debtor in possession pursuant to sections 1107 and
1108 of the Bankruptcy Code since the Petition Date.



                                      V-50


<PAGE>   674



                 2.       FIRST DAY ORDERS

         On or about the Petition Date, the Bankruptcy Court issued numerous
"first day orders" which facilitated the on-going normal operation of the
Debtor. These orders covered various issues including, inter
alia, authorization for joint administration of Columbia's and TCO's
bankruptcy proceedings; the payment of pre-petition wages, employee business
expenses and employee benefits; and approval of debtor in possession financing
on an interim basis pending a final hearing.

         The Bankruptcy Court also entered an order authorizing TCO to identify
the initial group of gas purchase contracts that it intended to reject by August
8, 1991, and to implement procedures permitting the immediate reduction in
volumes of gas which TCO was obligated to receive and reducing to spot market
levels the prices to be paid for gas taken.

         On the Petition Date, the Bankruptcy Court issued an order approving
TCO's retention of Cravath, Swaine & Moore, Stroock & Stroock & Lavan, and
Young, Conaway, Stargatt & Taylor as bankruptcy co-counsel; and Arthur Andersen
& Co. as accountants. The Bankruptcy Court approved the Debtors' retention of
Salomon Brothers Inc. as financial advisor on October 22, 1991.

         In addition to the above professionals, TCO subsequently received
authorization to retain various other professionals and special counsel to
provide advice to TCO with regard to various non-bankruptcy matters.



                                      V-51


<PAGE>   675



                 3.       DEBTOR IN POSSESSION FINANCING

         On August 22, 1991, the Bankruptcy Court entered a final order (the
"DIP Order") authorizing TCO to borrow up to $80 million from Manufacturers
Hanover Trust Company ("MHT") under a revolving credit facility (the "DIP
Facility"). On November 27, 1991, in accordance with the terms of the DIP
Facility, and effective as of November 29, 1991, TCO notified MHT of its
intention to reduce the DIP Facility to $25 million, all of which was available
for the issuance of letters of credit only. The DIP Facility was amended
subsequently on January 8, 1993 to extend its maturity from July 31, 1993 to
December 31, 1994 and on December 9, 1993 to extend its maturity to December 31,
1995 or such later date as agreed to by Chemical Bank ("Chemical"), the
successor by merger to MHT, and TCO. The Claims arising under the DIP Facility
are secured by a first priority lien on, and security interest in, certain cash,
cash equivalents and other property of TCO (the "Cash Collateral") equal to 105%
of the face amount of all letters of credit requested by TCO. The Cash
Collateral is funded by deposits made by TCO into an account maintained by
Chemical.

                 4.       FORMATION OF COMMITTEES AND RETENTION OF PROFESSIONALS

         On August 12, 1991, the United States Trustee appointed the Official
Committee of Unsecured Creditors of TCO (the "Creditors' Committee"). On
September 26, 1992, the United States Trustee appointed the Official Committee
of Customers of TCO (the "Customers' Committee").



                                      V-52


<PAGE>   676



         The following are the members and professional advisors to each
Committee:

                 TCO's Official Unsecured Creditor's Committee:

                 Members:

                          Union Pacific Resources Company
                          Meridian Oil Production, Inc.
                          Energy Development Corporation
                          Exxon Corporation
                          Koch Industries, Inc.
                          Phillips Production Company
                          Wyoming - Interstate Company
                          Equitable Resources Co.

                 Counsel:

                          Sidley & Austin
                          One First National Plaza
                          Chicago, IL 60603

                          Rosenthal, Monheit & Gross
                          First Federal Plaza
                          P.O. Box 1070
                          Wilmington, DE 19899

                 Financial Advisors:

                          Lehman Brothers
                          American Express Tower
                          World Financial Center
                          New York, NY 10255-2000

                 Accountants:

                          Ernst & Young
                          787 Seventh Avenue
                          New York, NY 10019

                 TCO's Official Customers' Committee:

                 Members:

                          Baltimore Gas & Electric Company
                          Cincinnati Gas & Electric Company
                          The Dayton Power & Light Company
                          Mountaineer Gas Company
                          Washington Gas Light Company

                 Counsel:



                                      V-53


<PAGE>   677



                          Shaw, Pittman, Potts & Trowbridge
                          2300 N Street, N.W.
                          Washington, DC 20037

                          Trzuskowski, Kipp, Kelleher & Pearce, PA
                          1020 N. Bancroft Parkway
                          Wilmington, DE 19899-0429

                 Financial Advisers:

                          The NorthBridge Group
                          950 Winter Street
                          Waltham, MA 02154

         Counsel and advisors to the Customers' Committee currently are not
compensated pursuant to sections 330 and 331 of the Bankruptcy Code. However,
pursuant to the Customer Settlement Proposal, TCO has agreed to pay current
members of the Customers' Committee, but not its professionals, the amount of
$1.3 million, which payment will be shared pro rata among them, and in a
separate settlement agreement, has agreed to pay UGI, a former member of the
Customers' Committee, the amount of $225,000. All such payments will be paid out
of the post-reorganization income of Reorganized TCO forty-five days after the
Effective Date.

                 5.       EXTENSION OF EXCLUSIVE PERIOD TO FILE PLAN OF
                          REORGANIZATION

         During the course of TCO's Reorganization Case, the Bankruptcy Court
has granted TCO several extensions of the periods during which it has the
exclusive right to file a plan of reorganization and to solicit acceptances
thereto. Concurrently with the filing of the Plan, TCO has requested a
Bankruptcy Court order further extending the exclusive periods for Plan filing
and solicitation on an interim basis through May


                                      V-54


<PAGE>   678



18, 1995, and then for a total of an additional one hundred and eighty (180)
days through October 16, 1995 and December 18, 1995, respectively. This
extension will provide TCO the opportunity to pursue confirmation of its Plan.

                 6.       MOTION FOR A DATA ROOM

         On January 31, 1994, the Creditors' Committee filed a motion for an
order requiring TCO to establish a data room (the "Data Room Motion"). The
Debtors and the Columbia Committees opposed the Data Room Motion. At a hearing
held on February 19, 1994, Judge Balick granted the Data Room Motion and ordered
TCO and its Creditors' Committee to submit a joint stipulation of terms and
conditions for entry into the data room by March 11, 1994.

         After much discussion, TCO and its Creditors' Committee negotiated a
Joint Stipulation and Order Re Terms and Conditions for Admission to TCO Data
Room (the "Stipulation") which was "so ordered" by the Court on March 18, 1994.
The salient provisions of the Stipulation provided that all interested parties
submit by April 20, 1994, a written request (the "Request") for entry into the
data room. The Requests were required, inter alia, to (i) identify the name and
identity of the entity or entities making the request, (ii) include an executed
confidentiality agreement in the form annexed to the Stipulation, (iii) include
a check in the amount of $50,000 payable to TCO, and (iv) include the entity's
most recent financial statements or similar information reasonably demonstrating
the financial capability of



                                      V-55


<PAGE>   679



each person or entity providing material capital or financial support to any
transaction involving TCO. The Requests were to be reviewed by Lehman Brothers
and Salomon Brothers Inc to determine whether the Requesting Entities should be
deemed qualified. Any disagreements over an entity's qualifications, were to be
submitted to the Bankruptcy Court for determination.

         Pursuant to the Stipulation, TCO received six (6) timely Requests for
entry into the data room from the following entities: (i) Tennessee Gas Pipeline
Co., (ii) CNG Transmission Corporation, (iii) Exxon Company, U.S.A. ("Exxon"),
(iv) Dimeling, Schreiber & Park ("Dimeling"), (v) National Fuel Gas Supply
Corporation and (vi) Occidental Petroleum Corporation.

         Pursuant to the Stipulation, TCO issued four (4) access letters to the
requesting entities allowing those entities access to the data room on the dates
requested. With respect to two (2) of the requesting entities, Dimeling and
Exxon, TCO denied those entities access to the Data Room. With respect to
Dimeling's Request, Salomon Brothers Inc. determined that Dimeling's Request
failed to demonstrate the requisite financial capability. Dimeling's Request
failed to provide the identity of, or supporting financial documentation for,
those entities who would be participating with Dimeling in a potential
acquisition of TCO as specifically required by the Stipulation. With respect to
Exxon, TCO denied Exxon access to the data room because (i) the confidentiality
agreement executed by Exxon failed to conform with the form of confidentiality
agreement



                                      V-56


<PAGE>   680



annexed to the Stipulation and (ii) a potential conflict of interest exists
between Exxon's role as a prospective bidder for TCO and its role as a member of
the Creditors' Committee.

         On May 2, 1994, both Exxon and Dimeling filed motions with the
Bankruptcy Court requesting that the Court grant them access to the TCO Data
Room. A hearing on the Motions was held before Judge Balick on May 17, 1994.
Just prior to hearing Exxon withdrew its application for entry into the Data
Room. At the hearing, Judge Balick ordered Dimeling to come forward with
additional information in order to demonstrate its financial capability. Shortly
after the hearing, Dimeling sent a letter to TCO voluntarily withdrawing its
application for entry into the Data Room.

         The four parties entitled to access visited the Data Room and requested
extensive documentation, which was delivered to them. The Data Room was closed
on June 20, 1994.

         By letter dated August 19, 1994, Dimeling submitted to the Chairman of
the Board of Columbia a proposal for the reorganizations of Columbia and TCO
whereby Dimeling and an investor group would invest $500 million in newly issued
equity of Columbia, and in return receive the right to propose an initial slate
of directors for reorganized Columbia. Dimeling's proposal also contemplated the
sale of the distribution assets of Columbia for approximately $1.4 billion and
the use of the cash proceeds therefrom to pay producers $1.3 billion in
settlement of all their claims, and to pay all priority and



                                      V-57


<PAGE>   681



other unsecured claims of TCO in full, and to pay, in full, in cash all
unsecured claims of Columbia.

         After a careful review and analysis of Dimeling's proposals, Columbia,
with the assistance of its financial advisors, determined that the Dimeling
proposal was inadequate, not feasible and thus not in the best interest of
Columbia, TCO and their respective estates.

                 7.       ASSUMPTION OF NONRESIDENTIAL LEASES; EXTENSION OF TIME
                          TO REMOVE ACTIONS AND FILE PROOFS OF CLAIM ON BEHALF
                          OF CREDITORS

         On October 3, 1991, the Bankruptcy Court extended the time within which
TCO may assume or reject leases of nonresidential real property until
Confirmation of a plan of reorganization by TCO. On August 19, 1992, TCO filed a
motion with the Court seeking authority to assume over 15,600 leases, which are
substantially all of TCO's non-residential real property leases including its
natural gas storage leases. On October 16, 1992, the Court entered an order
authorizing TCO to assume all of the real property leases identified in the
August 19, 1992 motion and to pay all arrearages in connection with the assumed
leases which totalled approximately $1.2 million. Subsequently, TCO was
authorized to assume the lease for its main headquarters located in Charleston,
West Virginia (subject to further Bankruptcy Court approval of the exercise of
TCO's option to extend the term of that lease).

         To date, the Bankruptcy Court has extended both of the time periods
within which TCO may file applications to remove related



                                      V-58


<PAGE>   682



proceedings to the Bankruptcy Court and to file proofs of Claims on behalf of
Creditors who failed to do so.

                 8.       CASH COLLATERAL ORDER

         As of the Petition Date, the total principal amount of secured debt
owed to Columbia by TCO for the Columbia Secured Claim was approximately $1.3
billion, secured by substantially all the property of TCO. The secured
indebtedness consists of (i) the principal amount of $410 million arising from
the Inventory Financing Agreement between TCO and Columbia secured by a lien on
certain stored gas and (ii) a pre-petition mortgage indebtedness in the
approximate amount of $930 million in principal and $29 million in interest
arising from the TCO Indenture which is secured by substantially all of TCO's
non-storage inventory assets and property, whether currently owned or
after-acquired including the proceeds thereof.

         On August 23, 1991, the Bankruptcy Court entered a final order
(retroactively effective as of the Petition Date) authorizing TCO to use
Columbia's cash collateral and granting Columbia replacement liens and security
interests in TCO's post-petition assets, to the extent such liens and security
interests were valid, perfected and unavoidable as of the Petition Date and to
the extent the value of the collateral securing Columbia's Secured Claims
diminished after the Petition Date as a result of TCO's use of the cash
collateral. Columbia's post-petition liens and security interests were expressly
subordinated to (i) the DIP Facility; (ii) post-petition winter



                                      V-59


<PAGE>   683



service liens; (iii) other pre-petition liens on inventory, if valid, and (iv)
$7.5 million of the unpaid fees and expenses incurred by all the professionals
retained by TCO and the Committees in the bankruptcy proceeding to the extent
allowed by the Bankruptcy Court.

                 9.       APPOINTMENT OF FEE EXAMINER

         Due to the numerous professionals retained in TCO's and Columbia's
cases, the Bankruptcy Court deemed it necessary to appoint Professional Fee
Examiners, Inc. as the fee examiner (the "Fee Examiner") to assist the Court in
reviewing the numerous fee applications filed and applications to be
subsequently filed in Columbia's and TCO's cases which are in excess of $75,000.
On June 13, 1994, a hearing was held on interim fee applications filed for the
periods July 31, 1991 through March 31, 1992.

                 10.      PROCEDURES RELATING TO THE FILING AND DETERMINATION OF
                          CLAIMS

                          a.      BAR DATES

         On December 13, 1991, the Bankruptcy Court entered an order
establishing March 18, 1992, as the Bar Date by which Proofs of Claim must be
filed by all persons and entities that have or may have a Claim against TCO
subject to certain enumerated exceptions. Creditors were required to file a
Proof of Claim by the Bar Date if they hold a Claim which arose prior to the
Petition Date, and if the Claim does not fall within an enumerated list of
exceptions. These exceptions include (i) Claims listed on TCO's Schedules of
Liabilities, if (A) the



                                      V-60


<PAGE>   684



Claimant agrees with the amount, (B) the Claim is not listed as disputed,
contingent, or unliquidated and the (C) claimant agrees with the classification
of the Claim; (ii) Claims previously allowed by the Bankruptcy Court; (iii)
Claims arising solely from prepetition amounts owing under a non-residential
real property lease not rejected or assumed by TCO; and (iv) Claims of state and
Federal environmental agencies.

         Subsequently, Bar Dates were established for limited groups of
Creditors. First, the Court entered an order setting April 17, 1992 as the Bar
Date by which parties holding Claims arising under the class member contracts
that were within the scope of the Enterprise Energy Action could file
Claims. Pursuant to an order dated June 11, 1992, the Court also established
July 30, 1992 as a Bar Date by which certain beneficial interestholders or
potential interestholders of approximately 4,680 gas purchase contracts rejected
by TCO not previously notified of TCO's March 18, 1992 Bar Date were to file
proofs of Claim. The June 11, 1992 order also permits TCO to serve a notice of a
new bar date for certain pre-petition Creditors who were not listed on TCO's
Schedules and who did not receive notice of TCO's initial March 18, 1992 bar
date. Pursuant to an order dated February 10, 1994, the Court established April
1, 1994 as a Bar Date by which certain beneficial interestholders or potential
interestholders of approximately 7,800 gas purchase contracts which were
rejected by TCO or declared terminated pursuant to the Court's order were



                                      V-61


<PAGE>   685



to file Claims. Such Creditors are allowed 30 days from the date of service of
the notice to file a proof of Claim in TCO's case. TCO has the right to serve
such notices until an order confirming a Plan of Reorganization is entered by
the Court.

                          b.      CLAIMS AGENT

         The Bankruptcy Court also authorized TCO to employ Poorman-Douglas
Corporation ("Poorman-Douglas") as its official Claims agent, for purposes of
receipt and docketing of Claims. Notice of the Bar Date and Proof of Claim forms
were disseminated in a wide distribution to TCO's Creditors on or about January
3, 1992.

                          c.      CLAIM OBJECTIONS PROCEDURES

         Since the Petition Date, approximately 7,200 proofs of Claim, amounting
to at least $16.8 billion as docketed have been Filed against TCO's Estate. TCO
has obtained authority to file procedural objections to Claims, and to settle
smaller Claims. TCO has filed two omnibus procedural objections seeking to
expunge or reduce over 1,000 Non-Producer Claims, and has filed objections to
all Producer Claims, which objections have been consolidated with the Claims
Estimation Procedures. In addition, TCO has filed a request for an order
approving procedures for asserting and resolving procedural objections to
Producer Claims.

                          d.      REMOVAL/FILING OF CLAIMS

         The Bankruptcy Court has enlarged TCO's time to file applications to
remove litigation pursuant to Bankruptcy Rule



                                      V-62


<PAGE>   686



9027(a)(2) during TCO's Chapter 11 proceeding, most recently by an Order dated
March 24, 1995 which enlarged TCO's time to file such applications to July 22,
1995. Pursuant to section 1452 of Title 28 of the United States Code, TCO has
the right to remove any claim or cause of action in certain civil actions to the
district court in the district where the civil action is pending and such
district court may remand the claim or cause of action on any equitable ground.
Bankruptcy Rule 9027 provides that an application for removal of a litigation in
accordance with section 1452 must be filed by the debtor within the longest of
"(A) 90 days after the order for relief in the case under the Code, (B) 30 days
after entry of an order terminating a stay, if the claim or cause of action in a
civil action has been stayed under Section 362 of the Code, or (C) 30 days after
a trustee qualifies in a chapter 11 reorganization case but not later than 180
days after the order for relief." Bankruptcy Rule 9006 authorizes the Bankruptcy
Court to enlarge this time period "for cause shown." The Bankruptcy Court has
continued to enlarge the time period for TCO because of the thousands of Claims
filed against TCO and the large number of lawsuits to which TCO is a party.

         The Bankruptcy Court has also enlarged TCO's time to file proofs of
Claim on behalf of Creditors who do not timely file proofs of Claim, most
recently to July 22, 1995, pursuant to an Order dated March 24 1995. Section
501(c) of the Bankruptcy Code provides that if a creditor does not timely file
its proof



                                      V-63


<PAGE>   687



of claim, the debtor may file a proof of such claim in the name of the creditor.
Bankruptcy Rule 3004 provides that the debtor must file such proof of claim
within thirty (30) days after the expiration of the time for filing proofs of
claim. Bankruptcy Rule 9006 authorizes the Bankruptcy Court to enlarge this time
period "for cause shown." The Bankruptcy Court has continued to enlarge this
time period for TCO because of the thousands of Claims filed against TCO and the
time-consuming process to reconcile and liquidate such Claims.

         G.      INVESTMENT GUIDELINES LITIGATION AND OTHER INVESTMENT DECISIONS

         On July 31, 1991, Columbia and TCO sought and obtained Court approval
of the Debtors' use of SEC-approved guidelines for the investment of all of the
Debtors' respective cash, cash equivalents, and deposit accounts. The Court
expressly held that the Debtors did not need to obtain a bond from the entity
with which such funds were to be deposited or invested and that compliance with
the guidelines was "adequate and sufficient compliance with the requirements of
Section 345(b) of the Bankruptcy Code...."

         On August 14, 1991, the U.S. Trustee filed a motion for reconsideration
of the order approving the investment guidelines (the "Investment Guidelines
Order"), which was denied by the Court after conducting a hearing on October 3,
1991. Subsequently, on October 15, 1991, the U.S. Trustee appealed the
Investment Guidelines Order to the District Court. On appeal, the case was
assigned to a United States Magistrate (the



                                      V-64


<PAGE>   688



"Magistrate") who issued a report on May 7, 1993 (the "Report"). The Report
recommended reversal of the Investment Guidelines Order on the basis that the
guidelines do not comply with the with the bonding requirements of section
345(b). On August 19, 1993, the United States District Court for the District of
Delaware (the "District Court") adopted the Report and reversed the Investment
Guidelines Order.

         On August 30, 1993, Columbia and TCO appealed the District Court's
decision to the Third Circuit Court of Appeals (the "Third Circuit Appeal") and
filed a motion for stay pending appeal (the "Stay Pending Appeal"). On February
10, 1994, the District Court granted the Debtors' motion for a stay pending
appeal.

         On August 29, 1994, the Third Circuit issued its decision (i) affirming
the District Court's decision except to the extent that it ruled on the Debtors'
investments in repurchase agreements and (ii) remanding the matter to the
District Court for further proceedings consistent with the opinion. In its
opinion, the Third Circuit suggested to the District and Bankruptcy Courts that
they implement the statutory guidelines of section 345(b) in a gradual manner so
as not to have an unduly adverse impact on the estate.

         Pursuant to the Third Circuit's decision, the matter was remanded to
the District Court and then to the Bankruptcy Court for further proceedings. As
of the date hereof, no further proceedings have occurred. In order to come into
compliance



                                      V-65


<PAGE>   689



with the Third Circuit's decision, the Debtors, in consultation with the U.S.
Trustee, have gradually transferred and will continue to transfer their
investments into government-backed securities and other similar government
insured or guaranteed investments as their prior non-conforming investments have
matured and continue to mature.(6) Thus, TCO's current investments of excess
cash are currently substantially in compliance with the Third Circuit's
decision.

                 Because TCO, as a debtor in possession, has been unable
post-petition to utilize the cash generated by its operations in excess of its
cash needs in the ordinary course of its business, TCO determined that its
surplus cash could earn substantial amounts of interest income if invested.
Because TCO conducts operations within the jurisdiction of several states which
require the apportionment of an entity's taxable income based on factors related
to the entity's operations within such states (the "Apportionment States"),
however, such interest income would be subject to significant state income taxes
in the Apportionment States in which it conducts operations. The amount of
income tax owed by an entity per taxable year in each
                                  
- ---------------
(6)      On October 22, 1994, President Clinton signed into law the Bankruptcy
         Reform Act of 1994 which, among other things, amends section 345(b) of
         the Bankruptcy Code so as to insert the phrase "unless the court for
         cause orders otherwise" at the end of section 345(b). This amendment
         allows the court to approve investments other than those permitted by
         section 345(b) for just cause, thereby overruling the Third Circuit's
         decision in In re Columbia Gas System, Inc.  The Bankruptcy Reform Act
         applies prospectively to cases filed after its effective date.


                                      V-66


<PAGE>   690



of the Apportionment States is calculated based on the entity's apportioned
income.

         Because Delaware Investment Holding Companies ("DIHC") are exempt from
the income taxes of Apportionment States, TCO concluded that by establishing a
wholly-owned DIHC subsidiary, it could invest its surplus income in the DIHC in
exchange for 100% of the stock of the DIHC which would result in a reduction of
its state income tax obligations in excess of $250,000 per year. Moreover,
although its excess cash would be held by a subsidiary, the accumulated interest
income would remain available to TCO through dividend declarations, repurchases
of its stock or loans to TCO by the DIHC.

         On February 14, 1992, TCO sought authorization from the Bankruptcy
Court to form a DIHC by filing an Application for Entry of Order Approving the
Formation of a Delaware Investment Holding Company by Columbia Transmission
Corporation filed on February 14, 1992 (the "DIHC Application"). Pursuant to an
order dated March 18, 1992, the Bankruptcy Court granted TCO's requested relief
contained in the DIHC Application. The order authorized TCO to form a DIHC and
to borrow funds, or receive dividends, from, and engage in stock transactions
with the DIHC. The order requires TCO to cause the DIHC to conduct its
investment activities in conformity with the investment guidelines established
by the Bankruptcy Court. Due to changes in the tax laws, TCO anticipates
dissolving its DIHC subsidiary



                                      V-67


<PAGE>   691



pursuant to the Plan, if not authorized to do so by the Bankruptcy Court prior
to the Confirmation Date.



                                      V-68
<PAGE>   692
VI.       THE COLUMBIA SYSTEM:  PUBLIC UTILITY HOLDING COMPANY ACT
          REGULATION, SYSTEM FINANCING, COLUMBIA'S CLAIM AGAINST TCO
          AND THE INTERCOMPANY CLAIMS

          A.     THE COLUMBIA SYSTEM

          Columbia, the parent of TCO, is a holding company which owns 100% of
the stock of TCO. Columbia has eighteen subsidiaries, all but one of which are
wholly-owned, comprising one of the largest natural gas systems in the United
States (the "Columbia System").

                 1.       SYSTEM COMPANIES AND RELATIONSHIPS WITH TCO

         TCO and its properties and business are described in Section III. The
other components of the Columbia System are:

                          a.      COLUMBIA DISTRIBUTION COMPANIES
                                  (COLLECTIVELY, "CDC")

          Columbia Gas of Kentucky, Inc., Columbia Gas of Maryland, Inc.,
Columbia Gas of Ohio, Inc., Columbia Gas of Pennsylvania, Inc., and Commonwealth
Gas Services, Inc. These companies provide natural gas service to more than 1.9
million residential, commercial and industrial customers in Kentucky, Maryland,
Ohio, Pennsylvania and Virginia. With more than 28,000 miles of distribution
pipelines, these companies serve major markets such as: Columbus, Lorain, Parma,
Springfield and Toledo in Ohio; Gettysburg, York and Pittsburgh in Pennsylvania;
Lynchburg, Staunton, Portsmouth and Richmond suburbs in Virginia; Ashland,
Frankfort and Lexington in Kentucky; and Cumberland and Hagerstown in Maryland.
In 1994, these five local distribution companies provided approximately 513
billion cubic feet of natural gas to their customers. TCO served these


                                      VI-1
<PAGE>   693



distribution companies as a provider of merchant gas prior to the implementation
of Order No. 636, and now provides them with gas transportation and storage
services.

                          b.      COLUMBIA GULF TRANSMISSION CORPORATION 
                                  ("GULF")

          Gulf has been the primary provider of transportation service for TCO
in connection with gas purchased by TCO from the Southwest, Mid-Continent and
Rocky Mountain gas producing areas. As a consequence of Order No. 636, TCO is no
longer purchasing any significant quantities of gas for which transportation by
Gulf would be necessary. However, Gulf continues to be important to TCO's
operations since it is the transportation source for much of the gas that is
received by TCO for redelivery to TCO's Customers.

                          c.      COLUMBIA GAS SERVICE CORPORATION ("COLUMBIA 
                                  SERVICE CORPORATION")

          Columbia Gas Service Corporation (the "Columbia Service Corporation"),
a mutual service company approved by the SEC under the HCA, cost-effectively
provides a broad range of specialized and other business services to support the
operations of Columbia and its subsidiaries. These services include electronic
data processing, risk management, accounting, legal, financial, environmental,
tax, human resources, auditing and other services for Columbia and its
affiliates. Through economies of scale and efficiency, the Columbia Service
Corporation is able to service the diverse and specialized needs of Columbia
System businesses.

                                      VI-2


<PAGE>   694



                          d.      COLUMBIA NATURAL RESOURCES, INC. ("CNR"), AND
                                  COLUMBIA GAS DEVELOPMENT CORPORATION ("CGD")

         CNR is an Appalachian gas and oil producer and CGD a Southwest gas and
oil producer. TCO purchased gas from CNR and CGD prior to the implementation of
Order No. 636. Under Order No. 636, TCO will continue to render transportation
services for gas produced by them.

                          e.      COLUMBIA LNG CORPORATION ("COLUMBIA LNG")

          Columbia LNG Corporation ("Columbia LNG"), an approximately 92%-owned
subsidiary of Columbia, is also involved in the transmission segment. Columbia
LNG, in partnership with a subsidiary of Potomac Electric Power Company, has
started construction of a FERC-approved natural gas peaking operation at the
Cove Point, Maryland facility referred to above. Peaking and related services
are expected to start in late 1995 to meet the peak demands for natural gas in
the mid-Atlantic area.

                          f.      TRISTAR VENTURES CORPORATION AND COLUMBIA
                                  ENERGY SERVICES

          These companies are, respectively, a cogeneration project developer
and a marketer of gas. TriStar Ventures Corporation ("TriStar"), another
Columbia subsidiary, develops new business opportunities in power generation and
other energy-related markets. Its primary focus is the development, ownership
and operation of natural gas-fueled cogeneration and independent power projects.
Its cogeneration projects include interests in a 117 megawatt facility at the
B.F. Goodrich manufacturing plant in Pedricktown, New Jersey, a 44 megawatt
facility at

                                      VI-3


<PAGE>   695



International Paper's Anitech plant in Binghamton, New York, a 46 megawatt
facility at the Progresso Foods plant in Vineland, New Jersey and an 85 megawatt
facility in Rumford, Maine. TCO transports gas for certain cogeneration projects
in which TriStar has an interest and for Columbia Energy Services. Columbia
Energy Services Corporation is the System's non-regulated natural gas marketing
affiliate which markets natural gas and provides an array of supply and fuel
management services to distribution companies, independent power producers and
other large end users both on and off Columbia's transmission and distribution
pipeline systems.

                 2.       CERTAIN SHARED OPERATION AND MAINTENANCE SERVICES
                          WITHIN THE SYSTEM

          TCO provides, at cost, certain operation and maintenance services
related to the facilities of CDC, CNR and Columbia LNG. In addition, CDC and CNR
perform operation and maintenance services for TCO at cost. All of these
intercompany service arrangements are designed to maximize the efficiency and
effectiveness of system-wide personnel and equipment. TCO proposes to assume all
such executory contracts with its affiliates, and to pay cure costs connected
therewith. See also Section VIII.B, "Assumption of Tax Allocation Agreement."

          B.     REGULATION BY THE SEC UNDER THE HCA OF THE
                 COLUMBIA SYSTEM; HCA REGULATION OF CHAPTER 11 PLANS

          Columbia is a registered public utility holding company under the HCA.
Under the HCA, the CDC companies are "public utility" subsidiaries, Columbia
Service Corporation is a "mutual

                                      VI-4


<PAGE>   696



service company" and the remainder of Columbia's subsidiaries are "nonutility"
subsidiaries of Columbia.

          Under sections 11(f) and (g) of the HCA, Columbia's Chapter 11 plan of
reorganization must be approved by the SEC after public notice and opportunity
for hearing, and the disclosure statement utilized to solicit acceptances of
Columbia's plan must be submitted to the SEC for its review and a report by the
SEC on the plan (or an abstract of such report), made after opportunity for
hearing, must accompany Columbia's plan disclosure/solicitation materials.

          While these same statutory provisions are applicable to Chapter 11
reorganization plans and related disclosure/solicitation materials of all
subsidiary companies, pursuant to its rule-making authority the SEC has exempted
from these requirements nonutility subsidiaries of registered holding companies
such as TCO (with limited exceptions applicable to TCO).

          Several of the transactions which are or may be necessary in order to
consummate the TCO Plan (as distinguished from the TCO Plan itself) require
approvals by the SEC under the HCA. Specifically, (i) the acquisition by
Columbia of securities of TCO in satisfaction of its existing Secured Claims
against TCO requires approval under sections 9 and 10 and (ii) the guaranty by
Columbia of the distributions to Creditors contemplated by the TCO Plan requires
approval under sections 6 and 7. In each case public notice and an opportunity
for a hearing before the SEC by interested parties are required.

                                      VI-5


<PAGE>   697



          Columbia's plan of reorganization is essentially a purely financial
restructuring, and Columbia does not reasonably expect that its plan will not be
approved by the SEC. Similarly, neither Columbia nor TCO anticipates that the
TCO Plan transactions requiring approval by the SEC under the HCA will not be so
approved.

         C.      REGULATION BY THE SEC UNDER THE HCA OF EXTERNAL AND INTERNAL
                 COLUMBIA SYSTEM FINANCINGS AND OF INTRA-SYSTEM SALES AND
                 SERVICE CONTRACTS AND ASSET TRANSFERS

                 1.       SYSTEM EXTERNAL AND INTERNAL FINANCING

          Because the holding company represents the aggregate of the
diversified credits of its subsidiaries, historically it enjoyed ready and
cost-efficient access to the financial markets. It has proved to be a vehicle
for satisfying the external financing needs of the Columbia System which is more
cost effective than direct financing of the subsidiaries. As a consequence, with
infrequent exceptions, Columbia has satisfied the capital requirements of its
subsidiaries, including TCO, by reinvesting the proceeds of its own external
financings in those subsidiaries either as indebtedness bearing interest rates
and maturities corresponding to the interest rate and maturities of Columbia's
own indebtedness, or as equity.

          Sections 6 and 7 of the HCA govern the issuances by Columbia of its
own securities and sections 6, 7, 9 and 10 of the HCA govern the issuances by
its subsidiaries of corresponding securities and Columbia's acquisition of those
corresponding securities.

                                      VI-6


<PAGE>   698



          Section 7 of the HCA provides that debt securities may not (with minor
exceptions) be issued either by a registered holding company or by any of its
subsidiaries if the SEC finds (among other things) that (i) the asset value
underlying the securities is inadequate, (ii) the securities are not reasonably
adapted to the capital structure of the holding company system, (iii) the terms
of the debt securities are not reasonable, or (iv) in the case of debt
securities of subsidiaries, they are not reasonably adapted to the subsidiary's
earning power.

                 2.       SEC REGULATION UNDER THE HCA OF INTRA-SYSTEM SALES AND
                          SERVICE CONTRACTS AND ASSET TRANSFERS

          Most significant transactions between Columbia and its subsidiaries
and between its subsidiaries are subject to HCA regulation by the SEC. Sections
9, 10 and 13 require SEC approval for the sale or acquisition of affiliate
securities or oil and gas leasehold interests and govern the sale of non-gas
goods and services, generally requiring them to be provided at cost.(1)

          As noted, TCO has had and continues to have a variety of on-going
transactions with certain other Columbia subsidiaries. All these transactions
have been and continue to be in compliance with the requirements of the HCA and
any applicable

- -------------------

(1)      In addition, state regulation of utility companies also generally
         requires pre-approval of transactions with affiliates (including
         pipeline affiliates) and generally provides for limited ability to
         recover more than a fair allocation of cost of capital.

                                      VI-7


<PAGE>   699



state regulations. The sale of gas, however, is regulated only by FERC and state
commissions.

         D.      CLAIMS OF COLUMBIA AND ITS OTHER SUBSIDIARIES AGAINST THE TCO
                 ESTATE

                 1.       COLUMBIA'S CLAIMS

          Columbia's Claims against the TCO Estate fall into four categories:
(i) Secured Claims for borrowed money, (ii) Unsecured Claims for borrowed money,
(iii) Contingent Claims arising under certain contractual relationships and (iv)
Claims for miscellaneous payables.

                          a.      SECURED CLAIMS FOR BORROWED MONEY

          The first Secured Claim (the "Inventory Claim") is based upon
indebtedness owed by TCO to Columbia pursuant to an Inventory Loan Agreement.
The Inventory Claim is secured by all of the natural gas held in storage by TCO
in certain underground storage reservoirs, including cushion gas, and the
proceeds thereof (the "Collateral"), as more fully set forth in the Inventory
Security Agreement dated as of June 19, 1985, between Columbia and TCO. As of
the Petition Date, the outstanding amount of the Inventory Claim was $410
million in principal plus accrued interest of approximately $2.7 million.
Post-petition interest has been accrued by TCO on the Inventory Claim,
calculated in accordance with the Inventory Financing Agreement. In connection
with the implementation of Order No. 636, TCO transferred title to most of its
gas inventory to its Customers. Pursuant to the Bankruptcy Court order dated
October 20, 1993 approving that transfer, Columbia's lien attached to the

                                      VI-8


<PAGE>   700



proceeds of sale (approximately $127 million in cash), and continues to attach
to cushion gas retained by TCO in connection with the operation of its storage
facilities.

          The second Secured Claim (the "Mortgage Claim") is based on
indebtedness issued by TCO to Columbia under the TCO Indenture. The Mortgage
Claim is secured by substantially all property, rights, privileges and
franchises of TCO of every kind and description, real, personal and mixed,
tangible or intangible (with the exception of certain property set forth in the
TCO Indenture) and the proceeds thereof (collectively, the "Trust Estate"). As
of the Petition Date, the outstanding amount of the Mortgage Claim was
approximately $930.4 million in principal plus accrued interest of approximately
$29 million. Post-petition interest has been accrued by TCO on the Mortgage
Claim calculated in accordance with the various underlying mortgage documents.

                          b.      UNSECURED CLAIMS FOR BORROWED MONEY

          The first Unsecured Claim for borrowed money (the "Columbia Unsecured
Promissory Note Claim") is based upon unsecured indebtedness of TCO to Columbia
evidenced by a series of Installment Promissory Notes of various dates. As of
the Petition Date, the aggregate principal amount outstanding was approximately
$293.8 million and accrued interest was approximately $6.8 million.

          The second Unsecured Claim for borrowed money is based upon a series
of Revolving Credit Agreement Notes of various dates.

                                      VI-9


<PAGE>   701



The aggregate principal amount owed, as of the Petition Date, was $50 million,
and accrued interest was approximately $314,000.
                          
                          c.      UNSECURED CLAIMS ARISING UNDER CONTRACTUAL
                                  ARRANGEMENTS

          Columbia has asserted an Unsecured Claim against TCO in an
undetermined amount for reimbursement of obligations Columbia has or will pay to
the Reliance Insurance Companies ("Reliance") as guarantor of TCO's obligations
to Reliance under certain surety bonds issued pre-petition. The Plan provides
for the assumption by Reorganized TCO of its obligations to Columbia on account
of such surety bonds.

          Columbia and other affiliates have asserted contingent, unsecured
Claims in undetermined amounts (the "TAA Claims") for amounts which may become
owing to them by TCO in the event TCO rejects the Tax Allocation Agreement. See
Section VIII.B, "Assumption of Tax Allocation Agreement." The Plan, however,
provides that TCO will seek to assume the TAA, subject to the approval of the
Bankruptcy Court.

                          d.      MISCELLANEOUS PAYABLE CLAIMS

          [Columbia also holds an Unsecured Claim against TCO in the amount of
$193,313.00 for miscellaneous payables, which were scheduled on TCO's Schedules
of Liabilities as undisputed, liquidated and non-contingent.]

                 2.       CNR'S CLAIM FOR THE EAST LYNN CONDEMNATION AWARD.

         Following the filing of the petition, TCO received payment from the
U.S. Army Corps of Engineers (the "Corps") for certain

                                      VI-10


<PAGE>   702



coal properties which the Corps had condemned. These properties had previously
been transferred to CNR (see Section V.E.1.b, "Transfer of Natural Resource
Properties From TCO to CNR"), and this payment has been held by TCO in an
interest-bearing account.

The Plan provides for the transfer of the East Lynn Condemnation Award to CNR.

                 3.       OTHER COLUMBIA SUBSIDIARIES' CLAIMS

          The CDC companies and other subsidiaries of Columbia have Claims
against TCO which arose in the ordinary course of their business dealings, as
well as contingent Claims which would arise from a rejection of the Tax
Allocation Agreement. These Claims are payable in full to the extent they are
cure costs on assumed executory contracts, or are classified in Class 3.4.

          E.     THE INTERCOMPANY CLAIMS (ASSERTED ON BEHALF OF THE TCO ESTATE 
                 AGAINST COLUMBIA AND CNR)

                 1.       BACKGROUND

                          a.      TCO'S 1985 CRISIS

          As more fully described in Section III.A, "TCO's Pre-Bankruptcy
Corporate Structure and Operations; Historical Industry Background," by early
1985 TCO's exposure on its high-priced, high take-or-pay, Southwest Producer gas
supply contracts jeopardized its long-term viability. In March 1985, Arthur
Andersen & Co., Columbia's auditors, qualified the 1984 Columbia financials to
reflect the uncertainty and risks arising from the adverse FERC determinations
and TCO's high-priced gas supply contracts.

                                      VI-11


<PAGE>   703



          TCO and Columbia structured a two-part response to resolve TCO's
business problems and to preserve its viability. The first step in this response
came in the spring of 1985: the PGA Settlement between TCO and its Customers and
other participants in certain FERC proceedings set Customer purchase levels and
capped TCO's prices for natural gas sales for two years. See Section III.B.2,
"Emergence of the Gas 'Bubble' and the Effect on TCO." As a result of the PGA
Settlement, TCO incurred pre-tax writeoffs in excess of $400 million in 1985 and
1986, causing TCO's debt-to-equity ratio to deteriorate substantially.

          The second step of the response was to renegotiate TCO's most
troublesome supply contracts, which effort required more than a billion dollars
in financial assistance from Columbia. In April 1985, the Columbia Board of
Directors approved the plan, which was called the PPRPP (see Section III.B.2.,
"Emergence of the Gas 'Bubble' and the Effect on TCO") and consisted of a
massive buyout proposal to various Producers. Because of the high level of risk
as to TCO's continued financial viability absent success of the PPRPP, the Board
authorized the extension of new funds to TCO only on a secured basis. That
secured financing was initially approved by the SEC in June 1985.

          From June through December 1985, TCO incurred more than $1 billion
dollars in secured debt, most of which funded the PPRPP. The buydown of those
supply contracts reduced the Producer

                                      VI-12


<PAGE>   704



Claims for which TCO might be liable in a subsequent bankruptcy proceeding by
more than $4 billion dollars. 

         As a result of Columbia's 1985 commitment and continuing support, TCO
remained a viable, going concern for almost six years and generated net cash
flow from operations (before debt service) of $1.3 billion. From 1986 through
1989, TCO reduced its overall debt by more than $725 million and TCO's
debt-to-equity ratio improved until abnormally warm weather adversely impacted
TCO's operating performance in 1990.

          The exceptionally warm winter weather beginning in 1990 substantially
reduced TCO's cash flow and increased its working capital requirements. Through
1990 and early 1991, TCO's secured debt increased rapidly as Columbia provided
new funds to meet TCO's capital and operating cash needs.

          After the PPRPP generally became effective, TCO paid Producers
(through the Petition Date) more than $5.3 billion or approximately $1.6 billion
more than these Producers would have received if they had sold their gas on the
declining spot market. Producers also received from TCO another $393 million in
payments for additional contract reformation and non-recouped take-or-pay, in
addition to the $796 million paid as part of the PPRPP.

          TCO's pre-tax cash flow was more than adequate to fund all its
dividend, interest and principal payments to Columbia. During this period, TCO
made capital expenditures exceeding $680 million, virtually all of which was
spent on the

                                      VI-13


<PAGE>   705



construction of gas pipeline facilities, including transmission pipelines to
reach new Customer areas. In addition, dividends totaling $130 million were paid
out of earnings in conformity with Delaware General Corporation Law and SEC
regulations under the HCA. No unsecured debt was prepaid or retired early.

                          b.      TRANSFER OF NATURAL RESOURCE PROPERTIES FROM
                                  TCO TO CNR

                                  (i)       INITIAL APPROVAL OF TRANSFER

          In 1944, Columbia was composed of many companies, a number of which
were involved in distribution, transmission and production. In 1971, those
companies were merged to form TCO, a single interstate transmission company
subject to FERC jurisdiction. As a result, TCO acquired all of Columbia's
production properties located in Appalachia. After the passage of the NGPA in
1978, many pipelines (including Columbia) reconsidered the logic of continuing
to combine gas production and pipeline businesses in one company.

          In the early 1980s, many pipelines were transferring production
properties to affiliates. Columbia and TCO actively explored transferring TCO's
Appalachian exploration and production properties to a subsidiary devoted to
developing and marketing Appalachian oil and gas free from FERC regulations (and
thereby separating it from TCO's highly regulated pipeline business of buying,
transporting and reselling Appalachian and Southwestern gas). CNR was
incorporated in 1984 for that purpose.

                                     VI-14
<PAGE>   706



          In 1984-85, Columbia and TCO filed applications with the SEC and FERC
to effectuate the transfer. As noted in those applications, the proposed
transfer of properties had been structured as a tax-free reorganization.

                                  (ii)      WITHDRAWAL OF THE APPLICATION

          TCO had in the meantime begun formulating the PPRPP. Because Columbia
was not in a position to provide all the funds required by TCO, a bank loan to
TCO that was secured by the Appalachian oil and gas reserves that were to be
transferred to CNR (the "Production Loan") was obtained instead.

          The Production Loan, however, required any transfer to be subject to
liens. To effect the transfer subject to the liens would have resulted in a high
level of deferred taxes that would have been recognized in the event of a loss
of control by either CNR or TCO of the production properties. To protect TCO and
its creditors (including Columbia) from those tax consequences, the SEC and FERC
applications were withdrawn and the transfer was postponed. At that time, TCO
entered into a management agreement with CNR relating to those properties.

                                  (iii)     RESUBMITTAL OF THE REORGANIZATION

         TCO repaid the Production Loan in 1988. In early 1989, a new
reorganization agreement providing for transfer of the properties was entered
into and submitted to the SEC and FERC for approval. Following public notice and
an opportunity for hearing, the SEC approved the transfer in May 1989.
Congressional passage of the Natural Gas Wellhead Decontrol Act

                                      VI-15


<PAGE>   707



of 1989 and a subsequent FERC interpretation of that Act (FERC Order No. 523,
February 18, 1990) established that there was no longer a need for FERC approval
of the transfer. Shortly thereafter, the transfer of properties began.

                                  (iv)      THE CNR TRANSFER

          On May 31, 1990, CNR and TCO executed a purchase and sale agreement.
Pursuant to that agreement, the closings for the transfer (the "CNR Transfer")
of TCO's natural resource properties were held from June to August 1990. The
transfers were structured to be tax free, and, like other intercompany
transfers, were all done at book value.

          In exchange for the properties (including wells, oil and gas
leaseholds, equipment, contracts and accounts receivable), $54 million of net
liabilities, and $22 million in cash, which collectively had a net book value of
$101,628,700, CNR issued to TCO 4,065,148 shares of its common stock, with an
aggregate par value of $101,628,700. Immediately after the transfer, TCO owned
80% of CNR. Pursuant to the requirements of section 368(a)(1)(D) of the Internal
Revenue Code governing tax-free divisive reorganizations, TCO then distributed
the CNR shares to Columbia; in exchange TCO received from Columbia TCO common
stock having the same aggregate par value as the CNR shares transferred to
Columbia. Before and after these transactions, both TCO and CNR were
wholly-owned subsidiaries of Columbia.

                                      VI-16


<PAGE>   708



                 2.       THE INTERCOMPANY CLAIMS LITIGATION

                          a.      STIPULATION AND ORDER CONCERNING PROSECUTION
                                  OF THE INTERCOMPANY CLAIMS

          On February 4, 1992, the Bankruptcy Court approved a stipulation among
Columbia, TCO and the Creditors' Committee assigning to the Creditors' Committee
the right to investigate and prosecute, on behalf of the Estate, all claims
against Columbia or CNR relating to actions occurring prior to the Petition Date
that may arise under sections 510(c), 544, 545, 547, 548, 550(a) and 550(b) of
the Bankruptcy Code or under applicable non-bankruptcy law for any allegedly
fraudulent conveyance, equitable subordination, illegal dividend, corporate
waste, alter ego, piercing the corporate veil, preference, invalidation of
unperfected liens or security interests and breach of fiduciary duty (the
"Intercompany Claims").

          The Stipulation allowed the claims to be pursued without conflict by
the TCO Creditors that potentially had the most to gain from the litigation and
provided that TCO would cooperate with the Creditors' Committee in the
investigation and prosecution of all intercompany claims. The order approving
the Stipulation reserved to TCO and Columbia the right to include settlement of
the litigation in any plan(s) of reorganization. Settlement negotiations were
conducted prior to the filing of a complaint, but did not produce a settlement.

                                      VI-17


<PAGE>   709



                          b.      INTERCOMPANY CLAIMS LITIGATION PROCEEDINGS

          On March 18, 1992, the Creditors' Committee filed its Complaint
against Columbia and CNR asserting the Intercompany Claims (the "Complaint"),
which are summarized below.

                                  (i)  ALLEGATIONS OF EQUITABLE SUBORDINATION

          The Complaint asserted that from 1985 to the filing of TCO's
bankruptcy petition in 1991, Columbia had used its position as sole stockholder
of TCO to gain for itself an unfair advantage over TCO's unaffiliated creditors
by maintaining TCO in an undercapitalized or insolvent condition while Columbia
removed valuable assets from TCO and repositioned itself as a secured creditor
in TCO's remaining assets so that Columbia would be at the head of the creditor
line in the event of a TCO bankruptcy. Among the transactions challenged as part
of the equitable subordination case were the transfer of TCO's oil, gas and coal
properties to Columbia and CNR in exchange for the return of TCO stock; the
payment of $130 million in dividends to Columbia; the use of new secured debt to
Columbia to pay principal and interest on TCO's pre-1985 unsecured debt to
Columbia; and the increase in TCO's secured debt to Columbia prior to
bankruptcy. The Complaint alleged that these actions had conferred an unfair
advantage on Columbia over TCO's other creditors and caused injury to TCO and
its creditors. As a remedy for this conduct, the Complaint sought the equitable
subordination of Columbia's claims against the TCO estate to the claims of TCO's
other creditors.

                                      VI-18


<PAGE>   710



                                  (ii)  ALLEGATIONS SEEKING RECHARACTERIZATION
                                        OF DEBT AS EQUITY

          The Complaint also asserted that Columbia's secured advances to TCO
from 1985 through 1991 should be recharacterized as equity contributions because
those loans were made by an insider at a time when TCO was undercapitalized or
had inadequate equity capital such that no disinterested lender would have been
willing to lend a like amount of funds to TCO on similar terms. The Complaint
asserted that Columbia's use of secured debt to finance TCO in these
circumstances inequitably shifted the risk of loss from Columbia to TCO's other
creditors.

                                  (iii) ALLEGATIONS OF FRAUDULENT CONVEYANCES

          The Complaint further asserted that the transfer of TCO's oil, gas and
coal properties to CNR, the payment of dividends to Columbia after July 31,
1988, the payment of principal and interest on TCO's prior unsecured debt to
Columbia after July 31, 1988, and the untimely perfection of certain of
Columbia's liens during that period constituted fraudulent conveyances under
applicable state and federal law. The Complaint alleged that those transfers
were made with the intent to hinder, delay or defraud TCO's Creditors; that TCO
was insolvent or engaged in business with unreasonably small capital at the time
of those transfers; and that TCO did not receive fair consideration.

                                      VI-19


<PAGE>   711



                                  (iv)  ALLEGATIONS OF VOIDABLE REDUCTION IN 
                                        CAPITAL

          The Complaint further alleged that TCO's capital was impaired as a
result of the transfer of TCO's oil, gas and coal properties to CNR and that,
therefore, that transfer was avoidable under applicable state and federal law.
That claim was withdrawn at trial.

                                  (v)   ALLEGATIONS OF PREFERENCES

          The Complaint also asserted that TCO's payments of principal and
interest on its unsecured debt to Columbia and the untimely perfection by
Columbia of certain liens on TCO real estate between July 31, 1990, and July 31,
1991, were transfers made on account of antecedent debts when TCO was insolvent
which enabled Columbia to receive more than it would have received in a
liquidation of TCO under Chapter 7, and thus voidable preferences under Section
547 of the Bankruptcy Code.

                          c.      RESPONSE OF COLUMBIA AND CNR

         Columbia's response to the Complaint was, among other things, that:

                          (i) with respect to the fraudulent conveyance claims,
such transfers were made for legitimate business reasons and fair consideration;
TCO was solvent and sufficiently capitalized at all relevant times and did not
act to hinder, delay or defraud its Creditors; that dividends were paid in
accordance with Delaware Corporation Law and that TCO had

                                      VI-20


<PAGE>   712



sufficient earnings and/or surplus to pay such dividends to Columbia;

                          (ii) with respect to the preference claims, that TCO
was solvent at the time the payments were made; that the loans were obtained and
the payments were made in the ordinary course of TCO's business; that the loans
were repaid in accordance with their regular payment terms; and TCO's payments
of principal and interest on Columbia's unsecured debt were not voidable
preferences under Section 547 of the Bankruptcy Code;

                          (iii) with respect to claims for equitable
subordination and recharacterization of Columbia's debt as equity, when TCO
encountered severe business problems in 1985, Columbia could have either
supported TCO or allowed it to enter bankruptcy; the decision by Columbia to
support TCO and avert its bankruptcy immensely benefitted TCO and its Creditors
(especially Producers that received PPRPP and other contract renegotiation
payments exceeding $1 billion and, over the next six years, more than $1.6
billion in above-market payments for gas); supporting TCO with unsecured debt or
equity was foreclosed by Columbia's duties to its security holders and thus
secured debt was the only means of providing TCO with financial support; TCO was
solvent and adequately capitalized during the relevant period; all of TCO's
dividends were legally paid, reasonable and appropriate; through Columbia's
support, TCO continued to operate successfully until record warm weather arrived
in early 1990; TCO paid all of its obligations as they

                                      VI-21


<PAGE>   713



came due (including those owed to Producers and Columbia alike); TCO did not
prepay unsecured debt or in any way convert it to secured debt; Columbia's
conduct was neither inequitable nor injurious to TCO's other Creditors; and any
alleged advantage to Columbia over other Creditors in bankruptcy is derived from
its unique position--unlike other Creditors, Columbia provided new financing to
TCO and did so at a time when TCO's financial position was precarious. The
allegation regarding recharacterization of debt as equity is not a separate
claim under the Bankruptcy Code and, in any event, recharacterization would be
improper because it benefitted Creditors when TCO incurred the debt and Columbia
received SEC approval to finance TCO on a secured basis after public notice. In
addition, only initial undercapitalization, which is not alleged in the
Complaint, could support a claim for recharacterization, and the Complaint also
fails to adequately allege facts that could support a finding of injury or
unfair advantage as is required under section 510(c) of the Bankruptcy Code, 11
U.S.C. Section 510(c).

                 3.       INTERCOMPANY CLAIMS LITIGATION PRETRIAL MATTERS

          On April 13, 1992, the Bankruptcy Court entered a Scheduling Order
with respect to discovery and procedures relating to the Intercompany Claims.
Hundreds of thousands of document pages were produced to the Creditors'
Committee by TCO, Columbia and CNR, and depositions of two dozen former or
current employees of TCO and Columbia were taken. In addition,

                                      VI-22


<PAGE>   714



approximately a dozen expert witnesses were deposed by the parties.

          In May through June 1992, Columbia's Official Committees of Equity
Holders and of Unsecured Creditors (the "Columbia Committees") both intervened
in the Intercompany Claims litigation as defendant-intervenors and answered the
complaint jointly, and TCO's Customers' Committee intervened as a
plaintiff-intervenor and filed a complaint substantially similar to the
Creditors' Committee's complaint.

          On June 30, 1992, Columbia filed an Objection to the TCO Creditors'
Committee's Proof of Claim filed on behalf of TCO against Columbia (the
"Objection"), which was consolidated with the Complaint pursuant to a Consent
Order signed on July 31, 1992.

          In June 1992, Columbia and CNR filed a Motion for Judgment on the
Pleadings and Summary Judgment (the "Summary Judgment Motion") as to the
equitable subordination, recharacterization and certain other claims in the
Complaint. The parties (including the intervening committees) briefed the
Summary Judgment Motion extensively, first in 1992 and then, based upon the
factual record developed during discovery, again in 1993. The Summary Judgment
Motion was denied shortly before trial without opinion.

          On May 13, 1994, the Bankruptcy Court made a sua sponte motion to the
District Court for withdrawal of the jurisdictional reference of the
Intercompany Claims Litigation.

                                      VI-23


<PAGE>   715



On May 25, 1994, the District Court granted the Bankruptcy Court's sua sponte
motion and withdrew the reference of the Intercompany Claims Litigation.

                 4.       THE INTERCOMPANY CLAIMS TRIAL

          Trial before the Honorable Joseph H. Farnan commenced in the United
States District Court for the District of Delaware on September 12, 1994. The
trial was completed on October 25, 1994.

          During the trial the Creditors Committee called three fact witnesses
(as adverse witnesses) and six expert witnesses and offered 677 exhibits in
support of TCO's claims against Columbia. In their defense, Columbia and CNR
called four fact witnesses and seven expert witnesses and offered 184 exhibits
in opposition to the evidence presented by the Creditors Committee. Each side
designated portions of 23 depositions in support of their positions. All of the
fact witnesses testifying at trial or by deposition were present or former
officers of Columbia or TCO.

          Following the trial, both sides submitted proposed findings of fact,
reply findings of fact, proposed conclusions of law, and post-trial argument.
These post-trial written submissions were completed on December 20, 1994. The
Court's decision is not expected before June 1, 1995.

                 5.       SUMMARY OF CREDITORS' COMMITTEE'S POSITION

          The Creditors Committee contends that it established at trial that
between 1985 and 1991 Columbia was carrying out a

                                      VI-24


<PAGE>   716



plan to use its control over TCO to gain for itself an inequitable advantage
over TCO's general unsecured creditors. The Creditors Committee contends that
the evidence showed (i) that Columbia formulated this plan in late 1984 and
early 1985 when TCO was experiencing severe financial problems, including the
possibility that it might soon be forced into bankruptcy; (ii) that Columbia
recognized that, as stockholder and unsecured creditor of TCO, it had little
chance of holding on to its investment in TCO if TCO went into bankruptcy at
that time; and (iii) that to avoid the loss of its investment and gain a
priority over TCO's other creditors, Columbia devised and implemented a plan to
forestall an immediate TCO bankruptcy and maintain Columbia's control over TCO
while Columbia removed assets from TCO and repositioned itself as a secured
creditor in TCO's remaining assets, thereby shifting the risk of loss to TCO's
other creditors in case TCO failed.

          The Creditors Committee contends that the evidence further showed that
Columbia's plan included (i) the removal of TCO's valuable oil, gas and coal
properties for the benefit of Columbia through the transfer of those assets to
CNR in exchange for the return of shares of TCO's own stock which had no value
to TCO; and (ii) the removal of an additional $130 million from TCO through the
payment of dividends to Columbia when TCO was undercapitalized and needed
additional cash. The Creditors Committee contends that the evidence also showed
that TCO borrowed additional secured debt from Columbia to pay those

                                      VI-25


<PAGE>   717



dividends, and that Columbia's equity interest was thereby in effect converted
into secured debt having a priority over TCO's unsecured creditors.

          In addition, the Creditors Committee contends that the evidence at
trial showed that Columbia made several changes in its practices with respect to
TCO's financial structure between 1985 and 1991 for the purpose of improving
Columbia's claim position in the event of a TCO bankruptcy, including (i)
leaving TCO severely undercapitalized from 1985 through 1991 so as to minimize
Columbia's equity investment at risk in TCO without reducing its ownership and
control; (ii) the institution of a new policy in 1985 of meeting all of TCO's
financing requirements from 1985 onwards exclusively with secured debt from
Columbia in an attempt to gain a secured claim on all of TCO's remaining assets;
and (iii) the conversion of over $300 million of Columbia's pre-1985 unsecured
loans to TCO into secured loans by having TCO borrow new secured debt from
Columbia to repay the prior unsecured debt, thereby elevating Columbia's claim
in bankruptcy over that of TCO's other unsecured creditors.

          The Creditors' Committee contends that the evidence showed that
Columbia's conduct was inequitable and, unless remedied by the Court, would
result in an unfair advantage for Columbia in the distribution of the TCO estate
and a corresponding injury to TCO's other creditors.

                                      VI-26


<PAGE>   718



          The Creditors Committee contends that the evidence at trial also
showed that a number of these transactions could be set aside as fraudulent
conveyances or voidable preferences. Thus, the Creditors Committee contends that
the evidence established (i) that the transfer of TCO's oil, gas and coal
properties to CNR was both an intentional fraudulent conveyance and a
constructive fraudulent conveyance under Section 548 of the Bankruptcy Code and
Delaware fraudulent conveyance law; (ii) that the dividends paid to Columbia in
the three years prior to TCO's bankruptcy were fraudulent conveyances under
Delaware law; (iii) that the new liens given to Columbia in connection with the
conversion of TCO's pre-1985 unsecured debt to Columbia into secured debt in the
three years prior to bankruptcy were fraudulent conveyances under Delaware law;
and (iv) that the liens acquired by Columbia in connection with the conversion
of TCO's pre-1985 unsecured debt to Columbia into secured debt in the one year
prior to bankruptcy and those liens that Columbia failed to perfect on a timely
basis prior to the preference period were voidable preferences under Section 547
of the Bankruptcy Code.

                 6.       SUMMARY OF COLUMBIA'S ANALYSIS OF THE INTERCOMPANY
                          CLAIMS

          Columbia believes that the Creditors' Committee failed to show at
trial (i) that any transfers by TCO to Columbia were improper or inequitable or
that any such transfers (or liens) constituted fraudulent conveyances or
voidable preferences; (ii) that the secured financing of TCO by Columbia (or any
other

                                      VI-27


<PAGE>   719



conduct of Columbia) was improper or inequitable or that Columbia obtained any
unfair advantage thereby; (iii) that TCO accelerated any payments to Columbia on
unsecured debt or that any unsecured debt was converted to secured debt; (iv)
that the secured financing by Columbia of TCO injured or unfairly disadvantaged
any group of actual or potential Creditors of TCO; or (v) that TCO was initially
undercapitalized.

          Columbia also believes that the credible evidence at trial
demonstrates that the two-part plan developed by TCO and Columbia in response to
TCO's problems in 1985 was a reasonable and bona fide attempt to solve TCO's
problems permanently, which in large part succeeded until adverse regulatory and
market developments, followed by unprecedented warm weather in 1990-91, led to
TCO's Chapter 11 filing. The evidence presented at trial also shows that (i)
TCO's problems in 1985 and the attendant increase in its debt/equity ratio were
a result of adverse business developments unrelated to Columbia's conduct; (ii)
all financing of TCO was approved by the SEC, after public notice and
opportunity for objection; (iii) TCO repaid unsecured debt only as it came due;
(iv) TCO had sufficient net cash flow from operations to fund all of its debt
and dividend payments to Columbia; (v) TCO's payment of principal and interest
to Columbia was in the ordinary course of business and pursuant to the terms of
loans made in the ordinary course of business that had been approved by the SEC;
(vi) providing TCO with unsecured debt or equity would have been inconsistent
with Columbia's

                                      VI-28


<PAGE>   720



duties to its own creditors and shareholders; and (vii) all of TCO's dividends
were proper.

          Most important, Columbia contends that the trial record demonstrates
that Columbia's continued funding of TCO greatly benefitted TCO's Creditors,
since it enabled TCO (i) to continue operating and fulfilling TCO's obligations
to outside Creditors (including the purchase of gas from Producers at prices
above spot market prices) and (ii) to substantially reduce potential Producer
Claims against the Estate by the payment of approximately $850 million over two
years to Producers under the PPRPP, the continued performance of the long-term
gas contracts from 1986 through mid-1991, and the expenditure of more than $200
million for buyouts (and buydowns) of long-term contracts after 1986.

          Finally, Columbia believes that the credible evidence demonstrates
that the CNR Transfer was not a fraudulent conveyance because TCO was in fact
solvent and had sufficient capital available to it at the time of the transfer
(and immediately thereafter) and the transfer was not made with fraudulent
intent, but was made to further long-standing substantial and legitimate
business purposes that were shared and effectuated by many other pipelines,
including ensuring that unregulated properties were maintained in a separate
unregulated company where they could be managed and developed more efficiently
free from regulatory constraints.

                 7.       SETTLEMENT OF THE INTERCOMPANY CLAIMS

                                      VI-29


<PAGE>   721



          The outcome of the numerous legal and factual issues raised by the
Intercompany Claims Litigation is not without doubt, and the potential recovery
by the Creditors' Committee could, at least in theory, reach the billion-dollar
level. In addition, any decision by the trial court would likely be subject to
costly and time-consuming appeals. The appeals could result in a reversal and a
new trial that would only further delay resolution of these Claims and the
payment of TCO's Creditors. The settlement of these Claims allows TCO's
Creditors an opportunity to receive substantial cash payments upon the Effective
Date and permits TCO and Columbia the opportunity to emerge from bankruptcy
proceedings without extended further delay.

                                      VI-30





<PAGE>   722
VII.     PLAN TREATMENT OF CLAIMS AND SUMMARY OF OTHER PLAN PROVISIONS

         THE FOLLOWING SUMMARY OF THE PLAN IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO THE ACTUAL PROVISIONS OF THE PLAN, A COPY OF WHICH IS ATTACHED
HERETO AS EXHIBIT 1.

         A.      CLASSIFICATION AND TREATMENT OF CLAIMS AND
                 INTERESTS

         All Claims and Interests are placed in the Classes set forth below
except that, in accordance with section 1123(a)(1) of the Bankruptcy Code,
Administrative Claims, Priority Tax Claims and certain other obligations of TCO
have not been classified.  The treatment of various Claims against, and
Columbia's Interests in, TCO are generally described below.  This description is
not intended to supersede the Plan and, for the precise treatment of Claims and
Interests, reference should be made to the Plan itself.

         In general, distributions in respect of Claims that are Allowed Claims
on the Effective Date will be made on the Effective Date by Reorganized TCO.  If
all Producers accept their Original Settlement Values, all Producers in Class
3.3 will receive the Target Distribution Percentage of their Allowed Claims on
the Effective Date.  If all Producers do not accept the Original Settlement
Values proposed for their Claims prior to the Effective Date, each Accepting
Producer in Class 3.3 will receive the Initial Distribution Percentage of their
Allowed Claims on the Effective Date.  Each Rejecting Producer in Class 3.3 will
receive the Initial Distribution Percentage of its Allowed Claim on the
thirtieth day after the end of the Calendar





                                     VII-1
<PAGE>   723
Quarter during which its Claim becomes Allowed.  Additionally, all holders of
Allowed Class 3.3 Claims may receive an additional distribution after all Class
3.3 Claims have been liquidated as described below.

         Under the Plan, Reorganized TCO will assume Post-Petition Operational
Claims, Miscellaneous Administrative Claims and all Class 4 Claims.

                 1.       UNCLASSIFIED CLAIMS

                          a.      ADMINISTRATIVE CLAIMS

         Administrative Claims include Claims for costs and expenses of the
administration of the Reorganization Case Allowed under sections 503, 507(a)(1),
507(b) or 1114(e)(2) of the Bankruptcy Code and consist of the following:

                          (i)       PROFESSIONAL CLAIMS

         Professional Claims include all Claims for unpaid fees and expenses of
Professionals retained in the Reorganization Case, as well as Claims pursuant
to section 503(b) of the Bankruptcy Code for compensation or reimbursement of
expenses to Creditors, indenture trustees and other entities and their
attorneys and other professional advisors who are determined by the Bankruptcy
Court to have made a "substantial contribution" to the Reorganization Case.

         Each Allowed Professional Claim will be paid in full in cash by TCO
(unless the holder of such Claim agrees to other treatment) on the later of (i)
the Effective Date and (ii) the tenth day after the date on which an order
allowing such





                                     VII-2
<PAGE>   724
Professional Claim becomes a Final Order.  Pursuant to the Plan, a Bar Date
will be set for the Filing of Professional Claims.  See Section VII.H.1.a, "Bar
Dates For Certain Administrative Claims; Professional Claims."

         TCO estimates that the Allowed Professional Claims which are to be
paid on or after the Effective Date will aggregate approximately $19.8 million.
Most Professionals retained in the Reorganization Case are being paid currently
90% of requested fees and 100% of requested expense reimbursements, which
amounts, as well as the remaining 10% of requested fees, are subject to final
Bankruptcy Court approval.  Post-petition interest will be payable, to the
extent Allowed by the Bankruptcy Court, on such remaining 10% of requested
fees.  TCO has not consented to the payment of post-petition interest on any
professional fees.

                          (ii)      POST-PETITION OPERATIONAL CLAIMS

         Post-Petition Operational Claims consist of all those Administrative
Claims, other than Environmental Claims included in Class 4.1, arising from
liabilities incurred by TCO in the ordinary course of business during the
pendency of the Reorganization Case.  Post-Petition Operational Claims include,
but are not limited to, Administrative Claims of governmental units for taxes,
Refund Claims attributable to rates and charges for services rendered by TCO
after the Petition Date and FERC-mandated post-petition interest thereon,
post-petition trade





                                     VII-3
<PAGE>   725
vendor and supplier payment obligations and post-petition obligations under
contracts and leases.

         Post-Petition Operational Claims that are outstanding as of the
Effective Date will be assumed and paid by Reorganized TCO pursuant to the
terms and conditions of the particular transaction giving rise to such Claim,
without any further action on the part of the holder of such Claim.

                          (iii)     ASSUMED EXECUTORY CONTRACT CLAIMS

         Assumed Executory Contract Claims consist of all unpaid obligations of
TCO to cure defaults in connection with the assumption by TCO under the Plan or
otherwise of pre-petition executory contracts and unexpired leases pursuant to
section 365(b)(1) of the Bankruptcy Code.  Most of these contracts relate to
TCO's operations, including computer maintenance contracts, software leases,
equipment leases, service agreements with Affiliates and any upstream pipeline
contracts which may be assumed by TCO.  See Section VII.I.2, "Assumption and
Rejection of Executory Contracts."  TCO will seek to assume the Tax Allocation
Agreement as an executory contract and, if approved by the Bankruptcy Court, to
the extent that the Tax Allocation Agreement allocates to TCO the obligation to
pay post-petition interest on amounts included in the IRS's Priority Tax Claim
or requires TCO to reimburse Columbia or any other subsidiary of Columbia for
any refunds and interest accrued on such refunds which Columbia or any other
subsidiary of Columbia would have been entitled to receive under the Tax
Allocation Agreement but





                                     VII-4
<PAGE>   726
were used by TCO to offset the Priority Tax Claims against it, such
post-petition interest will be paid and such reimbursement will be made by TCO
as an Assumed Executory Contract Claim.

         Allowed Assumed Executory Contract Claims will be paid in cash on the
Effective Date.  Any Assumed Executory Contract Claim that does not become an
Allowed Claim until after the Effective Date will be paid in cash on the
thirtieth day after the end of the Calendar Quarter during which such Claim
becomes an Allowed Claim.  Payments will be made net of any setoff of sums owed
to TCO by the holder of such Claim.

         TCO estimates that the Allowed Assumed Executory Contract Claims will
aggregate approximately $35.3 million, which amount includes cure costs which
would be payable in respect of the Tax Allocation Agreement.

                          (iv)      U.S. TRUSTEE'S FEE CLAIMS

         Pursuant to 28 U.S.C. Section  1930(a)(6), TCO, as a Chapter 11
debtor, is required to pay certain fees to the U.S. Trustee on a quarterly
basis during the pendency of the Reorganization Case.  Such fees are based upon
quarterly distributions made by TCO but in no event may such quarterly fees
exceed $5,000.  Throughout the course of the Reorganization Case, TCO has
remitted such quarterly fees to the U.S. Trustee on a timely basis.  TCO
estimates that there will be no more than $5,000 of U.S. Trustee's Fee Claims
outstanding on the Effective Date.  Such Claims will be paid in full in cash on
the Effective Date.





                                     VII-5
<PAGE>   727
                          (v)       MISCELLANEOUS ADMINISTRATIVE CLAIMS

         Miscellaneous Administrative Claims consist of all Administrative
Claims which are outstanding as of the Confirmation Date other than
Professional Claims, Post-Petition Operational Claims, Assumed Executory
Contract Claims, U.S. Trustee's Fee Claims, and Administrative Recoupment
Claims and include (i) contingent indemnification Claims of officers, directors
and employees of TCO, including indemnification Claims by (a) employees in
connection with pre- and post-petition personal injury and property damage
actions brought against them by third parties, and (b) officers and directors
in connection with pre-petition stockholder class actions and other securities
law actions, (ii) post-petition personal injury and property damage Claims and
(iii) Claims arising pursuant to performance bonds issued on behalf of TCO
post-petition.

         Miscellaneous Administrative Claims, including the obligation to
provide collateral security to support post-Confirmation performance bonds,
will be assumed and paid by Reorganized TCO as they become due and payable or
as otherwise directed by the Bankruptcy Court.  TCO does not believe that the
liabilities likely to be incurred in connection with these assumed obligations
will be material to its business.
                          (vi)      ADMINISTRATIVE RECOUPMENT CLAIMS
         Administrative Recoupment Claims consist of all Recoupment Claims of
Customers that are entitled to administrative priority by virtue of the
Stipulation and Order Regarding Motions for an





                                     VII-6
<PAGE>   728
Order Authorizing Recoupment, or, In the Alternative Directing Payments Into
Escrow, dated October 13, 1993, and the Stipulation and Order Regarding Motion
For An Order Modifying the Automatic Stay to Permit Set-offs of WACOG
Surcharges, or, in the Alternative, Directing Payment Into Escrow, dated
October 20, 1993 (collectively, the "Recoupment and Set-Off Stipulations").
See Section VII.A.2.c.(iii), "Class 3.2 - Unsecured Customer Refund Claims and
GRI Claims" for a discussion of the treatment of such Administrative Recoupment
Claims.

         The Recoupment and Set-off Stipulations apply to payments made by
Customers to TCO from September 1, 1993 to the extent such Customers are
determined to have Recoupment Claims equal to or greater than these payments.

         If Class 3.2 accepts the Plan, the Accepting 3.2 Claimants waive their
Administrative Recoupment Claims (see Section VII.A.2.C.(iii), "Class 3.2 -
Unsecured Customer Refund Claims and GRI Claims") and the Dissenting 3.2
Claimants will be entitled to pursue their Refund Disputes by litigation in the
Bankruptcy Court or before FERC and shall be entitled to such amounts, if any,
as such Claimants may be entitled under Final Orders determining and resolving
such Claimant's Administrative Recoupment Claims.  Such Allowed Administrative
Recoupment Claims shall be paid in cash on the thirtieth day after the end of
the Calendar Quarter in which such final resolution occurs and such holder's
Administrative Recoupment Claim is Allowed.





                                     VII-7
<PAGE>   729
                          b.        PRIORITY TAX CLAIMS

         Priority Tax Claims consist of all Unsecured Claims which are
attributable to income taxes, property taxes and any other taxes entitled to
priority in payment pursuant to section 507(a)(8) of the Bankruptcy Code,
including the Claims of the IRS that are the subject of IRS Order.  See Section
IV.C.6, "IRS and Other Priority Tax Claims."  TCO reserves its right to file an
amendment to its Schedule of Liabilities to reflect certain state tax Claims as
to which no proofs of Claim have been Filed in the amount of the liability
recognized by TCO, in order to avoid litigation over the dischargeability of
such sums.

           The IRS Order resolves essentially all pre-petition tax disputes
between Columbia and its affiliates and the IRS.  TCO is obligated to pay the
principal amount of the Allowed IRS Claims, and intends to pay post-petition
interest to the IRS and to reimburse its affiliates for refunds owed to them
which TCO used to set off against TCO's obligations, as cure costs arising in
connection with the assumption of the Tax Allocation Agreement.  However,
Columbia is also liable to pay the principal amount and post-petition interest
on the Allowed IRS Claims, and if and to the extent these payments are made by
Columbia, TCO is obligated to reimburse Columbia for such payments under the
Tax Allocation Agreement.

         TCO estimates that Allowed Priority Tax Claims will aggregate
approximately $137.3 million, of which the IRS Claims represent approximately
$134.6 million, other Priority Claims





                                     VII-8
<PAGE>   730
represent approximately $.5 million, and state tax Claims represent
approximately $2.2 million.

         Each Allowed Priority Tax Claim will be paid in full, in cash, on the
Effective Date, if then Allowed, or, if not then Allowed, on the thirtieth day
from the date on which it becomes an Allowed Claim, except that the Claims of
the IRS that are the subject of the IRS Order will be paid, in accordance with
Section 1129(a)(9)(C) of the Bankruptcy Code, in installments over a period not
to exceed six years from the date of assessment of such Claims, together with
interest at the rate set forth in Section D.7 of the IRS Settlement Agreement.
The full amount of such Claims will be paid in cash in equal quarterly
installments, beginning on the date which is three months after the Effective
Date and ending on the quarterly date which does not exceed six years from the
date of assessment of such Claims, except that the first quarterly installment
shall be paid in three equal monthly installments beginning on the Effective
Date.  Each monthly or quarterly installment shall be paid together with
interest on such installment at the rate set forth in Section D.7 of the IRS
Settlement Agreement accrued to the date of payment.  Notwithstanding the
foregoing, however, Reorganized TCO, with the prior consent of Reorganized
Columbia, shall have the right to pay the Claims of the IRS, or any remaining
balance of such Claims, in full or in part at any time on or after the
Effective Date, without premium or penalty.  Payments on the Priority Tax
Claims of the IRS made by Columbia





                                     VII-9
<PAGE>   731
or Reorganized Columbia shall, pursuant to the IRS Settlement Agreement, reduce
the Priority Tax Claims of the IRS against TCO or Reorganized TCO in accordance
with the terms of the IRS Order.

         It is currently intended that payments of the Allowed IRS Claims and
post-petition interest thereon will be made to the IRS by Columbia, as parent
of the Columbia Group.  Accordingly, TCO will pay to Columbia, on the Effective
Date, an amount equal to such Allowed Claims and post-petition interest through
the Effective Date, pursuant to its obligations under the Tax Allocation
Agreement.

                          c.        EAST LYNN CONDEMNATION OBLIGATION

         In late 1991, TCO received $52 million from the United States
government representing damages arising from the condemnation of the East Lynn
Property which, at the time the condemnation proceedings were begun, was owned
by TCO.  Prior to TCO's receipt of the East Lynn Condemnation Award, the East
Lynn Property, together with the right to receive the East Lynn Condemnation
Award, was transferred to CNR.  TCO has been holding the money in trust for CNR
and has invested the $52 million in interest-bearing securities.  TCO estimates
that as of December 31, 1995, it will hold approximately $62.5 million in trust
for CNR.  On the Effective Date, TCO will turn over to CNR the cash and cash
equivalents held on behalf of CNR, including the interest earned thereon
through the Effective Date.





                                     VII-10
<PAGE>   732
                 2.       CLASSES OF CLAIMS
                          a.        CLASS 1 CLAIMS - SECURED CLAIMS

                                    (i)    CLASS 1.1 - THE DIP FACILITY CLAIMS

         Class 1.1 consists of all Secured Claims of Chemical Bank under the
DIP Facility.  All Class 1.1 Claims will be paid in full on the Effective Date,
if then Allowed, or, if not then Allowed, on the tenth day after such Claims
become Allowed Claims.  On the Effective Date, the DIP Facility will terminate
by its terms.  Deficiency Claims, if any, will be treated as Administrative
Claims in accordance with Section 364(c) of the Bankruptcy Code and in
accordance with the Order of the Bankruptcy Court dated August 22, 1991
approving the DIP Facility.  TCO believes that there will be no such Deficiency
Claims.

         TCO estimates that the Allowed Class 1.1 Claims will aggregate
approximately $2 million.

         Class 1.1 Claims are unimpaired.

                          (ii)      CLASS 1.2 - SECURED PRODUCER CLAIMS

         Class 1.2 consists of Claims of Producers that supplied gas to TCO
pre-petition to the extent such Claims are secured by statutory liens.
Although several Claimants have asserted such liens (totalling approximately
$40 million), TCO has Filed complaints seeking a determination that such liens
are invalid or are avoidable by TCO, and believes that its position will be
upheld if the matters are ultimately brought to trial.


                                     VII-11
<PAGE>   733
         To the extent that a lien underlying a Class 1.2 Claim is held to be
valid, the holder of such Claim that is Allowed as of the Effective Date will
receive, on the Effective Date, cash in an amount equal to the lesser of (i)
the Allowed amount of its Claim, and (ii) the value of its collateral as
determined by the Bankruptcy Court.  Deficiency Claims, if any, will be treated
as Unsecured Claims in the appropriate category of Class 3.  TCO believes that
there will be no such Deficiency Claims.

         Any Class 1.2 Claim that does not become an Allowed Claim until after
the Effective Date will be paid in cash to the extent described above from the
Claims Reserve on the thirtieth day after the end of the Calendar Quarter in
which such Claim becomes an Allowed Claim.

         Class 1.2 Claims are unimpaired.

                          (iii)     CLASS 1.3 - OTHER SECURED CLAIMS

         Class 1.3 consists of Secured Claims not included in Classes 1.1, 1.2
or 2.1 and includes setoff Claims permitted under section 553 of the Bankruptcy
Code.  On the Effective Date, TCO will satisfy each Class 1.3 Claim that is
then Allowed by, at TCO's option, (i) paying the holder of such Allowed Claim
cash in an amount equal to the lesser of (x) the Allowed amount of such Claim
and (y) the value of such holder's collateral as determined by the Bankruptcy
Court, (ii) reinstating the maturity of the obligation giving rise to such
Allowed Claim and curing all defaults in accordance with section 1124 of the
Bankruptcy Code, or (iii) permitting setoff of such Allowed





                                     VII-12
<PAGE>   734
Claim against any obligation the holder of such Claim may owe to TCO.
Deficiency Claims, if any, will be treated as Unsecured Claims in the
appropriate category of Class 3.  TCO believes that there will be no such
Deficiency Claims.

         Any Class 1.3 Claim that does not become an Allowed Claim until after
the Effective Date will be paid in cash from the Claims Reserve in the amount
described in the preceding paragraph on the thirtieth day after the end of the
Calendar Quarter during which such Claim becomes an Allowed Claim.

         Although several claimants have asserted that they hold liens against
property of TCO, the only such Claim which TCO acknowledges to be valid, other
than certain setoff Claims, was Filed by the West Virginia Economic Development
Authority (the "WVEDA") for approximately $155,000.  TCO plans to reinstate its
obligations to the WVEDA and cure any outstanding defaults.  TCO has Filed or
will File prior to the Plan Mailing Date objections to those Claims that it
believes have improperly asserted secured status.  TCO estimates that Allowed
Class 1.3 Claims will aggregate approximately $163,000.

         Class 1.3 Claims are unimpaired.

                          b.        CLASS 2.1 CLAIM - THE COLUMBIA SECURED CLAIM

         Class 2.1 consists of the Columbia Secured Claim.

         On the Petition Date, the principal amount of the Columbia Secured
Claim was $1,340,448,419.33 and the total Claim amount on the Effective Date
will be approximately $1,984.1 million (which includes pre- and post-petition
interest calculated as





                                     VII-13
<PAGE>   735
described below, assuming an Effective Date of December 31, 1995.  Interest on
the Columbia Secured Claim is calculated as follows:

                          (i)       INTEREST ON INVENTORY LOAN AGREEMENT

         Interest will be accrued on the aggregate of the unpaid principal and
accrued and unpaid interest under the Inventory Loan Agreement as of the
Petition Date from the Petition Date to the Effective Date at the fluctuating
"Applicable Rate", as that term is defined in the Inventory Financing
Agreement, plus the additional two (2%) percent per annum provided for therein.

                          (ii)      INTEREST ON FIRST MORTGAGE BONDS - SERIES A

         Accrued interest on each Series A First Mortgage Bond as of the
Effective Date will be the aggregate of:

                 (a)  all unpaid sums due and payable as interest on the unpaid
principal balance thereof during the period between the Petition Date and
December 31, 1991, the date upon which the Series A Bonds are deemed to have
matured, at the fluctuating "Series A Rate", as that term is defined in the
Indenture of Mortgage and Deed of Trust pursuant to which the First Mortgage
Bonds were issued;

                 (b)  interest on each of the installments of interest referred
to in clause (a) above from the due date of such installment to December 31,
1991, at the said Series A Rate; and

                 (c)  interest on the aggregate of the unpaid principal amount
of such bond and the interest installments referred to in





                                     VII-14
<PAGE>   736
clause (a) above, from January 1, 1992 to the Effective Date, at such Series A
Rate.

                          (iii)     INTEREST ON FIRST MORTGAGE BONDS -
                                    SERIES B, D, E AND F

         Accrued interest on each Series B, D, E and F First Mortgage Bond on
the Effective Date will be the aggregate of:

                 (a)  all unpaid sums due and payable as interest on the unpaid
principal balance thereof (assuming all required post-petition sinking fund
payments had been made) on each of the interest payment dates provided for in
respect of such Bond, during the period from the Petition Date to the Effective
Date, at the "Series B Rate" (as that term is defined in said Indenture) with
respect to the Series B Bonds and at the fixed rate of interest established for
such bond at the time of the issuance thereof, in the case of the Series D, E
and F Bonds;

                 (b)  interest on each such installment of interest referred to
in clause (a) above from the due date of such installment to the Effective
Date, at the rate described in such clause; and

                 (c)  interest on each defaulted sinking fund payment from the
due date of the payment to the Effective Date, at the rate described in clause
(a) above.

         The Columbia Secured Claim will be Allowed as Filed, provided that all
other distributions which, under the Plan, are required to be made to Creditors
on the Effective Date are in fact made as provided for.  On the Effective Date,
Columbia will receive in respect of its Secured Claim, newly issued secured





                                     VII-15
<PAGE>   737
debt securities of Reorganized TCO having a principal amount calculated to
provide Reorganized TCO with an appropriate funded debt-to-equity ratio as of
the Effective Date, and the right to retain the existing TCO stock, with the
balance of the Columbia Secured Claim to be contributed to the capital of
Reorganized TCO.  The terms of the secured debt securities to be distributed in
respect of the Class 2.1 Claim will be as proposed by TCO and approved by the
Bankruptcy Court on or before the Effective Date.

         The Class 2.1 Claim is impaired.

                          c.        CLASS 3 CLAIMS - UNSECURED CLAIMS

                                    (i)    SETTLEMENT VALUES AND ALLOWANCE
                                           AMOUNTS

         TCO has proposed Settlement Values for each Producer Claim in Class 3.
The Settlement Value proposed for any Producer Claim that is an Allowed Claim
as of the Plan Mailing Date is the Allowed amount of such Claim as of that
date.  The Settlement Value proposed for each Producer Claim other than the
Claims of the Initial Accepting Producers, which is not Allowed on that date is
the amount which TCO, in light of all the relevant facts, believes constitutes
a fair and equitable compromise at which it believes that the Claim should be
Allowed and at which TCO will, if the Plan is consummated, consent to have it
be Allowed.  In the case of the Initial Accepting Producers, the Settlement
Values proposed have been individually negotiated with those Producers, taking
into account all known factors likely to affect the ultimate Allowance of such
Claims.


                                     VII-16
<PAGE>   738
TCO shall have the right, prior to the Plan Mailing Date, with the consent of
the Creditors' Committee, to decrease or, after consultation with the
Creditors' Committee, to increase the Original Settlement Values offered to
Producers (other than Initial Accepting Producers) which are set forth on
Schedule I.

         Each Producer that accepts the Settlement Value proposed for its Claim
will be deemed to have agreed to an Allowed Claim in that amount, subject to
Bankruptcy Court approval, in Class 3.1 or Class 3.3, as appropriate.  A
Producer who accepts the proposed Settlement Value for its Claim will be deemed
to have waived and released any right of setoff, any lien, or any other Claim
against TCO or TCO's property, and TCO shall be deemed to have released all
rights of setoff and Avoidance Claims which TCO may have against such Producer
or its property, subject to Bankruptcy Court approval of such Producer's
Settlement Value, on the Effective Date.  If the holder of a Producer Claim in
either of Classes 3.1 or 3.3 that accepts its Settlement Value, but its
Settlement Value is not approved by the Bankruptcy Court, such holder shall be
treated as a Rejecting Producer in Class 3.3 unless TCO and such Producer agree
on a modified Settlement Value that is approved by the Bankruptcy Court.  If a
holder of a Producer Claim that TCO proposes be in Class 3.1 does not accept
its proposed Settlement Value, such Claim will be a Class 3.1 Claim to the
extent that such Claim is Allowed in an amount of $25,000 or less and otherwise
will be a Class 3.3 Claim or a Class 1.2 Claim.  Any holder of a Producer Claim
that





                                     VII-17
<PAGE>   739
does not accept its Settlement Value will have the Allowance of its Claim
determined by litigation before the Claims Mediator or the Bankruptcy Court, as
appropriate, or by a settlement approved by the Bankruptcy Court.

         Additionally, a dollar amount (an "Allowance Amount") has been
proposed for each General Unsecured Claim that is not an Allowed Claim as of
the Plan Mailing Date.  The Allowance Amounts are set forth on Schedule II to
the Plan.  The Allowance Amounts proposed for each General Unsecured Claim
which is not an Allowed Claim on the Plan Mailing Date is the amount at which
TCO, in light of all the relevant facts known to it, believes and consents that
the Claim should be Allowed.

         Each holder of an unliquidated General Unsecured Claim that accepts
the Allowance Amount proposed for its Claim will be deemed to have agreed to an
Allowed Claim in that amount, subject to Bankruptcy Court approval, in Class
3.1 or Class 3.4, as appropriate.  A holder of a General Unsecured Claim who
accepts its Allowance Amount for its Claim will be deemed to have waived and
released any right of setoff, any lien, or any other Claim against TCO or TCO's
property, and TCO shall be deemed to have released all rights of setoff or
Avoidance Claims which TCO may have against such holder or its property,
subject to Bankruptcy Court approval of such holder's Allowance Amount, on the
Effective Date.  If the holder of an unliquidated General Unsecured Claim that
TCO proposes be in Class 3.1 does not accept its Allowance Amount, such Claim
will be a Class 3.1





                                     VII-18
<PAGE>   740
Claim to the extent that such Claim is Allowed in an amount of $25,000 or less
and otherwise will be a Class 3.4 Claim.  Any holder of an unliquidated General
Unsecured Claim that does not accept its Allowance Amount will have the
Allowance of its Claim determined by litigation before the Bankruptcy Court or
by a settlement approved by the Bankruptcy Court.

         If the Plan is not consummated, any voluntary reduction in a Claim
made by a Claimholder by acceptance of a Settlement Value, or an Allowance
Amount, or otherwise, in order receive the treatment provided for Class 3.1,
Class 3.3 or Class 3.4, as applicable may be nullified at the option of the
Claimholder by written notice to TCO in accordance with such procedures as
shall be determined by the Bankruptcy Court.

                          (ii)      CLASS 3.1 - UNSECURED CLAIMS OF $25,000 OR
                                    LESS

         Class 3.1 consists of all Unsecured Claims (other than any Customer
Regulatory Claim the holder of which does not execute a Waiver Agreement prior
to the Effective Date) that are Allowed in an amount that does not exceed
$25,000, including Claims which are Allowed at such amount because of a
voluntary reduction in the amount of Claim by the Claimholder's acceptance of a
Settlement Value, or an Allowance Amount or other voluntary reduction in the
amount of the Claim.  If a Claim as Filed is for more than $25,000 and
consequently is classified in another Class but has a proposed Settlement Value
or Allowance Amount of not more than $25,000, an acceptance of the Settlement
Value or the Allowance Amount constitutes not only a voluntary reduction





                                     VII-19
<PAGE>   741
of the Claim to its Settlement Value or Allowance Amount but also an election
to receive the treatment provided for Class 3.1.

         Each Class 3.1 Claimant will be paid in cash one hundred (100%)
percent of the Allowed amount of its Claim, on the Effective Date, if the Claim
is then Allowed, or, if not then Allowed, then on the thirtieth day after the
end of the Calendar Quarter during which such Claim becomes an Allowed Claim.
The foregoing is subject, in the case of any Customer Regulatory Claim of a
Customer, to the provisions of the fourth paragraph of Section III.B.3.c. with
respect to the method of payment of such Claims other than in cash, including,
but not limited to, distributions in the form of a credit to a rate mechanism.

         TCO estimates that the Allowed Class 3.1 Claims will aggregate
approximately $8.0 million.

         Class 3.1 Claims are unimpaired.

                          (iii)     CLASS 3.2 - UNSECURED CUSTOMER REFUND
                                    CLAIMS AND GRI CLAIMS

         Class 3.2 consists of all GRI Claims and all Customer Regulatory
Claims not included in Class 3.1, whether or not scheduled or Filed.  These
Claims include all Claims of Customers in excess of $25,000 for pre-petition
regulatory refunds owed to Customers, including (i) Customer Claims and GRI
Claims for regulatory refunds that are the subject of the Omnibus FERC Motion,
(ii) Claims which are the subject of the BG&E Case, (iii) 1990 Rate Case Claims
and any other Section 4(e) Claims and (iv) any other refund provided for by
FERC





                                     VII-20
<PAGE>   742
orders or regulations.  This Class does not include Claims by Customers based
on environmental obligations or liabilities or miscellaneous trade payables or
Producer Claims held by Customers.  The Omnibus FERC Motion, the BG&E Case and
the 1990 Rate Case Settlement are described in Section IV.C, "Other Significant
Claims and Related Litigation."

         Those Claims which involve collections by TCO of "trust fund monies"
from third parties for refund to Customers, or payment, in the case of GRI
Claims, to GRI, will include (i) if the collection of such sums was prior to
the Petition Date, interest as prescribed by FERC from the date of collection
by TCO to the Petition Date and thereafter, with respect only to the
approximately $3.3 million which under the Trust Fund Decision was determined
to be distributable as trust funds after application of the "lowest
intermediate balance" principle, in accordance with the FERC Interest Order and
(ii) if the collection was subsequent to the Petition Date, interest in
accordance with the FERC Interest Order.  Holders of Section 4(e) Claims that
are resolved in the 1990 Rate Case Settlement will receive interest as provided
therein.  Other Refund Claims, under Section 4(e) or otherwise, will include
FERC-mandated interest through the Petition Date, and interest thereafter, if
any, in accordance with the Customer Settlement Proposal.

         If Class 3.2 votes to accept the Plan, each Accepting Class 3.2
Claimant (i.e., a Class 3.2 Claimant that votes for the Plan or, not having
voted for the Plan, on or before the Effective





                                     VII-21
<PAGE>   743
Date, executes a Waiver Agreement) shall have an Allowed Refund Claim in an
amount equal to the amount set forth for such Claimholder in schedules attached
to the Customer Settlement Proposal and shall receive on the Effective Date (a)
that to which such Claimholder is entitled under the Trust Fund Decision and
any Final Orders made in furtherance or implementation thereof, including,
without limitation, any Final Orders regarding the allocation of the Lowest
Intermediate Balance Amount, with post-petition interest in accordance with the
FERC Interest Order, (b) eighty (80%) percent of the pre-petition amount and
one hundred (100%) percent of the post-petition amount due to such Claimholder
with interest as provided in the 1990 Rate Case Settlement in full satisfaction
of the 1990 Rate Case Claims (c) such Claimholder's allocable share of $52.5
million in settlement of all BG&E Claims, and (d) an amount equal to eighty
(80%) percent of such Claimholder's remaining Customer Regulatory Claim.

         Under the Waiver Agreement, a holder of a Customer Regulatory Claim
agrees to accept the treatment accorded such Claim under the terms of the
Customer Settlement Proposal and under the Plan in full settlement,
satisfaction, discharge and termination of each and every of such Claimholder's
Refund Claims and Refund Disputes settled in the Customer Settlement Proposal,
including but not limited to (i) any right to appeal from or otherwise seek
modification of the Trust Fund Decision or otherwise seek more favorable
treatment of its Omnibus FERC





                                     VII-22
<PAGE>   744
Motion Claim than that provided in the Trust Fund Decision, and with respect to
interest on such Claims, to seek modifications or reversal of the FERC Interest
Order, (ii) any Refund Claim that is the subject of the BG&E Case, (iii) any
Claim relating to or arising from the 1990 Rate Case, (iv) any Claim or right
in respect of any other Refund Claim other than as provided in the Plan, (v)
any right of setoff or recoupment in respect of its Customer Regulatory Claim,
(vi) any Claim or right to compel assumption, rejection or enforcement of its
pre-petition Service Contracts (except as otherwise provided in the Plan or the
Customer Settlement Proposal) and (vii) any right or Claim against Columbia
with respect to any of the foregoing, except the Columbia Customer Guaranty.
The Waiver Agreement also provides that the holder agrees (a) not to oppose,
before FERC or in any other forum, the recovery by Reorganized TCO from
Customers of any amounts paid or payable under the Customer Settlement
Proposal, as approved by the FERC and (b) except for the Motion to Unseal
Judicial Records (the "Motion to Unseal"), to the withdrawal, with prejudice,
of the Customers' Committee's complaint and intervention in and its
participation in any appeal or other proceeding in connection with the
Intercompany Claims Litigation and releases any rights or interests in any
judgment or other recovery on account of the Intercompany Claims.  If Class 3.2
fails to accept the Plan, or if the Plan is not consummated, any executed
Waiver Agreement may, at the





                                     VII-23
<PAGE>   745
option of the Claimholder, be declared null and void by written notice to TCO.

         TCO recognizes that the Customers' Committee has provided substantial
and valuable services and contributions to the formulation and structure of
TCO's Plan.  TCO's Estate has never paid any compensation or expenses to the
Customers' Committee members.  Likewise TCO has never paid any compensation or
expenses to the Customers' Committee professionals as no retention order was
entered by the Bankruptcy Court.  However, in recognition of the Customers'
Committee's expenditures, including the numerous expenses incurred by its
members over a period of approximately four (4) years, and in order to resolve
amicably a potential controversy with respect to the Customers' Committee's
entitlement to some form of reimbursement for such expenditures (the total of
which is as of this date in excess of $3 million), TCO has agreed to pay the
Customer's Committee a lump sum payment of $1.3 million which will be paid
solely to the current members of the Customers' Committee and not to its
professionals, which payment will be shared pro rata among the current
Customers' Committee members.  Additionally, TCO has agreed to pay to UGI, a
former member of the Customers' Committee, $225,000, representing one-half of
expenses incurred by UGI while serving in that capacity.  Such payments to the
Customers' Committee and UGI shall be made solely from post-reorganization
income of Reorganized TCO and shall be paid forty-five (45) days after the
Effective Date.


                                     VII-24
<PAGE>   746
         Any holder of a Class 3.2 Claim that does not vote for the Plan and
does not execute a Waiver Agreement prior to the Effective Date or, if Class
3.2 rejects the Plan, each holder of a Class 3.2 Claim, will be a Dissenting
3.2 Claimant.  A Dissenting 3.2 Claimant may continue to pursue its Refund
Disputes by litigation in any appropriate forum and its Class 3.2 Claim will
not be deemed Allowed for distribution purposes until all of its Refund
Disputes have been resolved by Final Orders.

         Each Dissenting 3.2 Claimant shall receive in respect of its Allowed
Class 3.2 Claim, (i) that to which such Claimant may be entitled under Final
Orders resolving such Claimant's Recoupment Claims, including Administrative
Recoupment Claims, if any, and (ii) that to which such holder is entitled under
the Trust Fund Decision and any Final Orders in furtherance or implementation
thereof, including, any Final Orders regarding the allocation of the Lowest
Intermediate Balance Amount and/or the determination of the amount of
post-petition interest due, or both and shall receive a distribution in cash in
an amount equal to the Target Distribution Percentage of the Allowed amount of
its Class 3.2 Claim remaining after application of any sums paid pursuant to
clauses (i) and (ii) above.

         Distributions to each Dissenting 3.2 Claimant shall be made (i) if
recoupment or setoff relating to the Refund Disputes is Allowed by Final Order,
on the thirtieth day after the end of the Calendar Quarter in which such Final
Order is entered and





                                     VII-25
<PAGE>   747
such holder's Claim is Allowed and (ii) with respect to final resolutions of
such Dissenting 3.2 Claimant's other Refund Disputes, as to which no recoupment
or setoff is authorized, on the thirtieth day after the end of the Calendar
Quarter in which all such Refund Disputes are resolved.

         Distributions to be made to an Accepting Class 3.2 Claimant shall be
made in accordance with the distribution provisions of the Customer Settlement
Proposal.  Distributions to Dissenting 3.2 Claimants shall be distributed in
cash at such time as provided in Section III.B.3.c of the Plan, or over such
period of time and in such form as may be appropriate under the Confirmation
Order or relevant FERC orders.  If, at an Accepting Claim 3.2 Claimant's
option, as set forth in the Customer Settlement Proposal, such distribution is
made in other than cash, including, but not limited to, distributions in the
form of a credit to a rate mechanism, Reorganized TCO shall retain the cash
which would otherwise be distributed to such holder under the Plan.

         TCO may, in its discretion, petition the Bankruptcy Court for an order
estimating, for voting and distribution purposes, the Claims of Dissenting 3.2
Claimants which are the subject of the BG&E Case and any other Disputed Claims.

         If Class 3.2 rejects the Plan, or if the Plan is not consummated, any
acceptance of the Waiver Agreement may, at the option of the holder of the
Claim, be considered null and void by written notice to TCO.





                                     VII-26
<PAGE>   748
         Pursuant to the Columbia Customer Guaranty, Columbia shall guaranty
the treatment afforded Accepting Class 3.2 Claimants.

 TCO estimates that the Allowed Class 3.2 Claims will aggregate approximately
$175.2 million.

         Class 3.2 Claims are impaired.

                          (iv)      REMAINING UNSECURED CLAIMS

                 (a)      DESCRIPTION OF REMAINING UNSECURED CLAIMS CLASSES

         The remaining Unsecured Claims Classes are Classes 3.3 (the Producer
Claims), 3.4 (General Unsecured Claims) and 3.5 (the Columbia Unsecured Claim).

         Class 3.3 consists of the Unsecured Claims held by the Producers not
included in Class 3.1.  Class 3.3 Claims are impaired.

         Class 3.4 consists of all remaining Unsecured Claims not included in
any other Class.  Class 3.4 Claims are impaired.

         Class 3.5 consists of the Columbia Unsecured Claim.  The Class 3.5
Claim is impaired.

                 (b)      TREATMENT OF REMAINING UNSECURED CLAIMS

                          (1)       CLASS 3.3 CLAIMS

         If all Producers in Class 3.3 accept the Original Settlement Values
proposed for their Claims and such Original Settlement Values are approved by
the Bankruptcy Court, each holder of an Allowed Class 3.3 Claim shall be paid,
in cash, on the Effective Date, an amount equal to the Target Distribution
Percentage of its Allowed Claim, together with a Supplemental Interest Payment
thereon, if applicable.  Otherwise, each holder





                                     VII-27
<PAGE>   749
of a Class 3.3 Claim which is Allowed as of the Effective Date shall be paid,
in cash, on the Effective Date, an amount equal to the Initial Distribution
Percentage of its Allowed Claim, together with a Supplemental Interest Payment
thereon, if applicable.

         The Holdback Amount is comprised of the difference between seventy two
and one half (72.5%) percent and the Initial Distribution Percentage of Allowed
Claims of the Accepting Producers.  The Holdback Amount can be used by
Reorganized TCO to fund distributions with respect to the Allowed Claims of
Rejecting Producers as described below.

         Rejecting Producers may continue to litigate their Claims under the
Claims Estimation Procedures or before the Bankruptcy Court. Each Rejecting
Producer shall be paid an amount equal to the Initial Distribution Percentage
of its Allowed Claim, together with a Supplemental Interest Payment thereon, if
applicable, on the thirtieth day after the end of Calendar Quarter during which
such Claim becomes Allowed, provided, however, if on such day, there is pending
an appeal (a) by such Rejecting Producer from the order Allowing such Rejecting
Producer's Claims, or (b) by Reorganized TCO or any other party from the order
Allowing such Rejecting Producer's Claim and Reorganized TCO or such other
party has obtained a stay pending appeal of such order, such distribution shall
be made on the thirtieth day after the earlier of the termination of the stay





                                     VII-28
<PAGE>   750
pending appeal or the entry of a Final Order Allowing such Rejecting Producer's
Claim.

         On the thirtieth day after the end of the Calendar Quarter during
which the Final Allowance Date occurs, except as provided in the next
paragraph, Reorganized TCO shall distribute to each holder of an Allowed Class
3.3 Claim (a) if the Actual Target Producer Distribution is less than the
Projected Target Producer Distribution (i) the Target Distribution Percentage
of its Allowed Class 3.3 Claim less any amounts previously paid to such holder,
together with a Supplemental Interest Payment thereon, if applicable and (ii)
such holder's pro rata share (based on the respective amounts of all Allowed
Class 3.3 Claims) of the Additional Distribution, together with a Supplemental
Interest payment thereon, if applicable, or (b) if the Actual Target Producer
Distribution exceeds the Projected Target Producer Distribution, and if (i)(A)
the sum of (1) the Initial Distribution Percentage of the aggregate of all
Allowed Class 3.3 Claims and (2) the aggregate of all Allowed Producer Claims
in Class 3.1 and Class 1.2 equals or exceeds (B) one hundred five (105%)
percent of the Projected Target Producer Distribution, no additional
distribution; or (ii)(A) the sum of (1) the Initial Distribution Percentage of
the aggregate of all Allowed Class 3.3 Claims and (2) the aggregate of all
Allowed Producer Claims in Class 3.1 and Class 1.2 is less than (B) one hundred
five (105%) percent of the Projected Target Producer Distribution, the
Supplemental Distribution Percentage of such





                                     VII-29
<PAGE>   751
holder's Allowed Class 3.3 Claim, together with a Supplemental Interest Payment
thereon, if applicable.

         If, prior to the Final Allowance Date, Reorganized TCO determines in
its good faith judgment, in light of the remaining unliquidated Producer
Claims, that the Holdback Amount will exceed the Excess Amount by at least
$25,000,000, Reorganized TCO shall make one interim distribution of such excess
to all holders of Allowed Class 3.3 Claims pro rata (based on the respective
amounts of Allowed Class 3.3 Claims), subject to a maximum distribution for any
such holder equal to the Target Distribution Percentage of such holder's
Allowed Class 3.3 Claim.  If such an interim distribution is made by
Reorganized TCO, the distribution to be made with respect to each Allowed Class
3.3 Claim relating to the Final Allowance Date will be adjusted so that the
amount of such distribution together with the amount of the interim
distribution made pursuant to this paragraph equal the amount that would have
been distributed with respect to such Claim under the proceeding paragraph if
no interim distribution was made.

         Claims of Rejecting Producers shall be liquidated through litigation
under the Claims Estimation Procedures or before the Bankruptcy Court, as
appropriate, or by a settlement approved by the Bankruptcy Court.

         All distributions to holders of Allowed Class 3.3 Claims shall be made
in cash, except that Reorganized TCO, with the prior consent of Columbia, shall
have the option to pay any





                                     VII-30
<PAGE>   752
amount due to any Rejecting Producer in excess of the Target Distribution
Percentage of the Original Settlement Value proposed for its Claim, in the form
of readily marketable publicly traded securities of Reorganized Columbia having
a fair market value equal to the distribution that Reorganized TCO has elected
not to pay in cash.  The fair market value of such securities shall be
determined based upon the last New York Stock Exchange trading day prior to the
date of distribution to such Rejecting Producer and, in the case of Columbia
common stock, such fair market value shall be deemed to be the midpoint between
the high and the low price for Columbia common stock as reported on the
consolidated tape of the New York Stock Exchange on such trading day.

         The Supplemental Interest Payment will be paid to all holders of
Allowed Class 3.3 and 3.4 Claims if the Effective Date occurs after January 31,
1996.  The Supplemental Interest Payment is in addition to the distribution to
which it relates and such interest is calculated as follows:

         If the Distribution Date occurs after January 31, 1996, the
         Supplemental Interest Payment will be an amount equal to an accrual
         for the period from and including January 1, 1996 to but excluding
         Distribution Date, on the amount of such distribution at a rate per
         annum equal to the annualized rate realized by TCO on funds invested
         by it pursuant to the Investment Guidelines during such period.





                                     VII-31
<PAGE>   753
         The agreement to make Supplemental Interest Payments, if due, is a
result of negotiations among the Creditors' Committee, the Initial Accepting
Producers, TCO and Columbia as part of the settlement of Producers Claims and
is intended to be an incentive for TCO and Columbia to consummate the Plan
quickly.

         TCO estimates that Allowed Class 3.3 Claims will aggregate $1,627.5
million.

                          (2)       CLASS 3.4 CLAIMS

         Each holder of an Allowed Class 3.4 Claim shall be paid, on the
Effective Date, if the Claim is then Allowed and, if not then Allowed, on the
thirtieth day after the end of the Calendar Quarter during which such Claim
becomes Allowed, provided, however, if on such day, there is pending an appeal
(a) by such a Claimholder from the order Allowing such Claimholder's Claims, or
(b) by Reorganized TCO or any other party from the order Allowing such
Claimholder's Claim and Reorganized TCO or such other has obtained a stay
pending appeal of such order, such distribution shall be made on the thirtieth
day after the earlier of the termination of the stay pending appeal or the
entry of a Final Order Allowing such Claimholder's Claim, an amount equal to
the Target Distribution Percentage of its Allowed Claim, together with a
Supplemental Interest Payment thereon, if applicable.

         All distributions to holders of Allowed Class 3.4 Claims shall be made
in cash, except that Reorganized TCO, with prior





                                     VII-32
<PAGE>   754
consent of Columbia, shall have the option to pay any amount due to any holder
of a General Unsecured Claim that does not accept the Allowance Amount proposed
for its Claim, in excess of the Target Distribution Percentage of the Allowance
Amount proposed for its Claim, in the form of readily marketable publicly
traded securities of Reorganized Columbia having a fair market value equal to
the distribution that Reorganized TCO has elected not to pay in cash.  The fair
market value of such securities shall be determined based upon the last New
York Stock Exchange trading day prior to the date of distribution to such
Claimholder and, in the case of Columbia common stock, such fair market value
shall be deemed to be the midpoint between the high and the low price for
Columbia common stock as reported on the consolidated tape of the New York
Stock Exchange on such trading day.

The Supplemental Interest Payment is described above in subsection (2).

         TCO estimates that Allowed Class 3.3 Claims will aggregate $56.3
million.

                          (3)  CLASS 3.5 CLAIM

         On the Effective Date, Reorganized Columbia shall be paid, in cash, an
amount equal to the Initial Distribution Percentage of its Allowed Claim,
together with a Supplemental Interest Payment thereon, if applicable.  On
thirtieth day after the end of the Calendar Quarter during which the Final
Allowance Date has occurred, Reorganized Columbia shall be paid, in cash, an


                                     VII-33
<PAGE>   755
amount equal to the same final distribution percentage of its Allowed Claim as
(a) all holders of Allowed Class 3.3 Claims have received on their Allowed
Claims or (b) all holders of Allowed Class 3.4 Claims have received on their
Allowed Claims, whichever is lower, less any amounts previously received by
Reorganized Columbia in respect of the Columbia Unsecured Claim, together with
a Supplemental Interest Payment thereon, if applicable.

         Reorganized Columbia, however, may utilize all or any portion of the
distribution that it receives on the Columbia Unsecured Claim to fund its
obligations with respect to the Columbia Omnibus Settlement.

         The Columbia Unsecured Claim in Class 3.5 will be Allowed under the
Plan as filed in amount of $351 million.

                          d.        CLASS 4 CLAIMS - ASSUMED CLAIMS

                                    (i)    CLASS 4.1 CLAIMS - ENVIRONMENTAL
                                           CLAIMS

         Class 4.1 consists of all pre- and post-petition environmental
compliance and remediation obligations owed to state and federal environmental
enforcement and regulatory agencies, including, without limitation, those
obligations of TCO arising under the Order Approving Administrative Order on
Consent for Removal Actions and Toxic Substance Control Act and Consent
Agreement between TCO and the United States Environmental Protection Agency
approved by order of the Bankruptcy Court on November 16, 1994 (the "EPA
Order"), that certain Consent Order and Agreement, dated October 6, 1994 by


                                     VII-34
<PAGE>   756
and between TCO and the Commonwealth of Pennsylvania, Department of
Environmental Resources, approved by order of the Bankruptcy Court dated
November 16, 1994 (the "Pennsylvania Environmental Order") and two certain
Agreed Orders by and between TCO and the Commonwealth of Kentucky, Natural
Resources and Environmental Protection Cabinet both dated October 24, 1994 and
approved by order of the Bankruptcy Court dated November 16, 1994 (the
"Kentucky Environmental Orders").  Non-consensual pre-petition environmental
penalty liabilities asserted by entities other than the Commonwealth of
Pennsylvania, the Commonwealth of Kentucky or the United States Environmental
Protection Agency and settled in the above-referenced orders are not included
in this Class.  For a further discussion of TCO's environmental liabilities,
see Section IV.C.9, "Environmental Issues."

         Class 4.1 Claims shall survive and be unaffected by the Confirmation
Order and will be assumed by Reorganized TCO and paid if and when due and
payable, either in the ordinary course of Reorganized TCO's business or in
accordance with such agreements or stipulations as may be entered into with the
relevant governmental authority, including, without limitation, the EPA Order,
the Pennsylvania Environmental Order and the Kentucky Environmental Orders.

         Class 4.1 Claims are unimpaired.

                           (ii)   CLASS 4.2 CLAIMS - CERTAIN CONDEMNATION CLAIMS

         Class 4.2 consists of condemnation awards payable pursuant to the
Bankruptcy Court's December 18, 1992 Order Authorizing





                                     VII-35
<PAGE>   757
TCO to Pay Condemnation Awards Adjudicated Post-Petition Where No Bond Has Been
Posted.  TCO estimates that the Class 4.2 Claims will total approximately
$227,000.  These Claims will be assumed by Reorganized TCO and paid if and when
due and payable.

         Class 4.2 Claims are unimpaired.

                          (iii)     CLASS 4.3 CLAIMS - PENSION CLAIMS

         Class 4.3 consists of all contingent Claims against TCO arising under
or related to Claims Filed by the PBGC in connection with employee or retiree
benefit or pension plans or programs.  On the Effective Date, Reorganized TCO
will assume its obligations relating to all employee and retiree benefit or
pension plans or programs and Claims in Class 4.3, if not previously withdrawn,
will be satisfied.  See Section IV.C.8., "Pension Claims."

         Class 4.3 Claims are unimpaired.

                          (iv)      CLASS 4.4 CLAIMS - SURETY BOND RELATED
                                    CLAIMS

         Class 4.4 consists of all contingent Claims arising under or related
to Claims Filed by Columbia in connection with TCO's obligation to reimburse
Columbia for any payments Columbia is or may be required to make on behalf of
TCO under or in connection with surety bonds issued for TCO's benefit.  These
Claims will be assumed by Reorganized TCO and paid if and when due and payable.
TCO estimates that Allowed Class 4.4 Claims will total approximately $7,000.

         Class 4.4 Claims are unimpaired.

                          (v)    CLASS 4.5 CLAIMS - AFFILIATE TAX CLAIMS





                                     VII-36
<PAGE>   758
         Class 4.5 consists of all Claims of Colombia or any of its
subsidiaries for any amount owed by TCO under the Tax Allocation Agreement
which remains after payment of Assumed Executory Contract Claims.  Class 4.5
Claims will be assumed by Reorganized TCO and paid if and when due and payable.

         Class 4.5 Claims are unimpaired.

                 e.       CLASS 5 INTERESTS - COMMON STOCK OF TCO

         Class 5 consists of Columbia's Interests.  Columbia shall receive no
distribution in respect of its Interests, although Columbia will retain all of
the stock of TCO through the Plan's treatment of the Columbia Secured Claim.
See Section VII.A.2.b, "Class 2.1 Claim - The Columbia Secured Claim."

         Class 5 Interests are impaired.

         B.      MECHANISM FOR QUANTIFYING CLAIMS

                 1.       PRODUCER CLAIMS

         Numerous proofs of Claim, notably Producer Claims, have been Filed
which are Disputed or which do not assert a Claim amount.  In March, 1992,
immediately following the Bar Date for Claims, TCO presented to the Bankruptcy
Court a proposal to expedite and simplify resolution of Disputed Producer
Claims.  The Bankruptcy Court entered a procedural order that provided for (i)
the appointment of a Claims Mediator, (ii) initial resolution of issues generic
to all or large categories of gas supply Contract Claims, and (iii) subsequent
resolution of issues specific to particular rejected gas supply contracts.  By
agreement, Charles Normandin, Esq. was appointed Claims Mediator





                                     VII-37
<PAGE>   759
and John Norris, Esq. was appointed to advise Mr. Normandin with respect to the
natural gas law aspects of the proceedings.  In order to obtain more
information about and quantify such Producer non-Contract Rejection Claims, in
early December 1993, TCO, with the approval of the Claims Mediator, sent a
questionnaire to approximately 1,000 holders of Producer non-Contract Rejection
Claims requesting detailed information about the nature of their Claims.

         Extensive evidentiary hearings before the Claims Mediator with respect
to generic issues relating to the recalculation of both Contract Rejection
Claims and non-Contract Rejection Claims were conducted over the next two
years, concluding in the Spring of 1994.  Preliminary hearings and discovery
also occurred on TCO's request for a market value of reserves approach to
calculating Contract Rejection Claims.

         On or about October 13, 1994, Mr. Normandin filed his Initial Report
and Recommendations of the Claims Mediator on Generic Issues for Natural Gas
Contract Claims (the "Claims Mediator Report").  Proposed forms for the
recalculation of Producer Claims were appended to the Claims Mediator Report,
and following the submission of comments and a hearing, were finalized by Mr.
Normandin and distributed to Producer Creditors.  Those recalculated Claims
forms are due to be returned by May 19, 1995, and will then be analyzed and
audited by Mr. Normandin and his technical experts.  Additional hearings





                                     VII-38
<PAGE>   760
on TCO's market value of reserves methodology are scheduled for June, 1995.

         The Plan proposes Settlement Values for all Producer Claims which
Settlement Values will, subject to Bankruptcy Court approval, be used to fix
such Claims for voting purposes and which, if accepted by any Producer
Claimant, will, subject to Bankruptcy Court approval, be the Allowed amount of
its Claim.

         See Section V.B.1., "The Establishment of Claims Estimation
Procedures" for a description of how the Settlement Values were determined by
TCO.

                 2.       DISPUTED GENERAL UNSECURED CLAIMS

         The Plan proposes Allowance Amounts for all unliquidated General
Unsecured Claims which Allowance Amounts will, subject to Bankruptcy Court
approval, be used to fix such Claims for voting purposes and which, if accepted
by any holder of a General Unsecured Claim, will, subject to Bankruptcy Court
approval, be the Allowed Amount of its Claim.  See Section V.B, "Non-Producer
Claims" for a description of how the Allowance Amounts were derived by TCO.

         C.      TRANSACTIONS ON THE EFFECTIVE DATE

         The following transfers and transactions, will occur on the Effective
Date:

         1.      Columbia shall deliver to Reorganized TCO any cash and
securities, if any, to the extent required by Reorganized TCO to fund the
distributions to be made to Creditors under the Plan, as contemplated by the
Columbia Omnibus Settlement.





                                     VII-39
<PAGE>   761
         2.      Reorganized TCO shall make the distributions required under
the Plan to be made on the Effective Date to all holders of Allowed Claims.

         3.      Reorganized TCO shall issue and deliver to Columbia its new
secured debt securities as required by the treatment of the Columbia Secured
Claim provided in the Plan.

         4.      If it is not already dissolved Columbia Transmission
Investment Corporation ("CTIC") shall be dissolved.  Funds in the RIA Account
shall be distributed to Accepting Class 3.2 Claimants in the manner provided in
the Customer Settlement Proposal, and the RIA Account shall be dissolved.  Any
remaining funds held by CTIC shall be distributed to Reorganized TCO.

         5.      The Stipulation of Dismissal with Prejudice of the
Intercompany Claims Litigation which is conditioned only upon the completion of
payment by Reorganized TCO of all distributions payable on the Effective Date
(the "Stipulation of Dismissal with Prejudice") shall have been filed with the
District Court.

         TCO estimates it will have approximately $1.39 billion in cash on hand
as of December 31, 1995, not including any contribution from Columbia.

         The Plan is expressly conditioned on confirmation of a plan of
reorganization for Columbia which provides for (a) Columbia to fulfill the
terms of the Columbia Omnibus Settlement and the Columbia Guaranty and (b) the
financing of Reorganized TCO on





                                     VII-40
<PAGE>   762
terms reasonably satisfactory to TCO and Columbia.  See Section VII.I.1.a,
"Conditions to Confirmation."

         D.      DISTRIBUTIONS UNDER THE PLAN

                 1.       DISTRIBUTIONS ON CLAIMS

         Except as otherwise provided in the Plan, or pursuant to orders of the
Bankruptcy Court, distributions to holders of Claims that are Allowed as of the
Effective Date will be made by Reorganized TCO in cash on the Effective Date
or, if not then Allowed, on the thirtieth day after the end of the Calendar
Quarter during which such Claims become Allowed, in accordance with the
treatment provided for such Claims in the Plan.

         Each subsequently Allowed Professional Claim and Priority Tax Claim
will be paid in cash by Reorganized TCO in accordance with the treatment set
forth for such Claims in Section III.A of the Plan.  Producers in Class 3.3 and
Reorganized Columbia in Class 3.5 will receive their distributions of the
Initial Distribution Percentage on the Effective Date, if their Claims are then
Allowed, or, if not then Allowed, on the thirtieth day after the end of the
Calendar Quarter during which their Claims become Allowed.  All holders of
Allowed Class 3.3 Claims and Reorganized Columbia  with respect to the Columbia
Unsecured Claim may receive a further distribution beyond the Initial
Distribution Percentage on the thirtieth day after the end of the Calendar
Quarter during which the Final Allowance Date occurs, depending upon the
aggregate Allowed amount of the Producer Claims.  Reorganized Columbia shall
receive the lesser





                                     VII-41
<PAGE>   763
of the final distribution percentage received by holders of Allowed Class 3.3
Claims or the final distribution percentage received by holders of Allowed
Class 3.4 Claims as a distribution percentage of the Columbia Unsecured Claim.

         Reorganized TCO will make all distributions of cash and securities
required in respect of the Allowed Claims under the Plan.  Any payment,
distribution or other action that is required under the Plan to be made or
taken on the Effective Date, or any other date, shall be deemed to have been
made or taken on the Effective Date or such other date, as applicable, if made
or taken or within ten (10) Business Days and TCO shall use its best efforts to
complete distributions due to be made on the Effective Date as soon as
reasonably possible once such distributions are commenced by Reorganized TCO.

                 2.       DELIVERY OF DISTRIBUTIONS AND UNCLAIMED DISTRIBUTIONS

                          a.        DELIVERY OF DISTRIBUTIONS IN GENERAL

         Distributions to each holder of an Allowed Claim will be made (a) at
the address set forth on the proof of Claim Filed by such holder, (b) at the
address set forth in any written notice of address change delivered to TCO or
Reorganized TCO after the date of Filing of any related proof of Claim, or (c)
if no proof of Claim has been Filed and neither TCO nor Reorganized TCO has
received written notice of a change of address, then at the address of such
holder reflected in the Schedule of Liabilities.





                                     VII-42
<PAGE>   764
                          b.        UNCLAIMED DISTRIBUTIONS

         If any distribution to the holder of an Allowed Claim is returned to
Reorganized TCO as undeliverable, or any check issued to a holder in payment of
any distribution is not negotiated, such Unclaimed Distribution will be
retained by Reorganized TCO, which may commingle such funds with its other
funds, until such time as a distribution becomes deliverable.

         Within thirty (30) days after the end of each Calendar Quarter,
Reorganized TCO shall distribute all such previously Unclaimed Distributions
that become deliverable during the preceding Calendar Quarter.

         Any holder of an Allowed Claim that does not claim an Unclaimed
Distribution within the later of five years after the entry of the Confirmation
Order and two years after such check or other instrument was issued by
Reorganized TCO shall have its Claim for such Unclaimed Distribution
discharged, shall not participate in any further distributions under the Plan
and shall be forever barred from asserting any such Claim against Reorganized
TCO or its property.  Any distribution on account of such holder's Claim and
any accumulated income thereon will be the property of Reorganized TCO, free of
any restrictions thereon.  Neither TCO nor Reorganized TCO will be required to
attempt to locate any holder of an Allowed Claim other than by reviewing its
own records.





                                     VII-43
<PAGE>   765
         The states' abandoned property laws are preempted when they are in
conflict with federal bankruptcy law.  Section 347(b) of the Bankruptcy Code
provides that "any security, money or other property remaining unclaimed at the
expiration of the time allowed in a case under chapter 9, 11 or 12 of this
title for the presentation of a security or the performance of any other act as
a plan confirmed under section 943(b), 1129, 1173, or 1225 of this title, as
the case may be, becomes the property of the debtor or the entity acquiring the
assets of the debtor under the plan, as the case may be."  Accordingly, all
Unclaimed Distributions shall become the property of Reorganized TCO.

                 3.       MEANS OF CASH PAYMENTS

         Cash payments made pursuant to the Plan will be in United States
dollars by checks drawn on a domestic bank selected by TCO or Reorganized TCO,
or by wire transfer from a domestic bank, at the option of TCO or Reorganized
TCO; provided, however, that cash payments to (i) Creditors in excess of
$1,000,000 who make a request in writing and provide wire instructions to TCO
at least thirty (30) days in advance of the Effective Date shall be made by
wire transfer by TCO or Reorganized TCO and (ii) foreign creditors, if any, may
be made, at the option of TCO or Reorganized TCO, in such funds and by such
means as are necessary or customary in a particular foreign jurisdiction.





                                     VII-44
<PAGE>   766
                 4.       SETOFFS

         The Plan preserves Reorganized TCO's right to setoff, pursuant to
either section 553 of the Bankruptcy Code or applicable nonbankruptcy law.
Subject, in the case of Accepting Class 3.2 Claimants, to the applicable
provisions of Customer Settlement Proposal, and as to other Creditors, the
provisions relating to accepted Settlement Values and Allowance Amounts set
forth in Section III.B.3.a. of the Plan, Reorganized TCO may set off against
any Allowed Claim and the cash distributions otherwise payable under the Plan,
any claim, right and cause of action of any nature that TCO or Reorganized TCO
may hold against the holder of an Allowed Claim.  Nothing contained in the Plan
shall constitutes a waiver or release by TCO or Reorganized TCO of any such
claim, right or cause of action, even if Reorganized TCO does not exercise its
right of setoff against distributions under the Plan.

         E.      SETTLEMENT OF INTERCOMPANY CLAIMS LITIGATION

         Pursuant to the Plan, in consideration of the Columbia Omnibus
Settlement (as defined in the Plan), all Intercompany Claims, including the
proof of Claim docketed as Claim No. 14009 in Columbia's reorganization case,
will be deemed settled, released and discharged as of the Effective Date.  See
Section V.E.5, "The Intercompany Claims and the Columbia Omnibus Settlement."
Except for the prosecution of the Motion to Unseal, Columbia, TCO, Reorganized
TCO, CNR, each of their respective affiliates, each of their respective present
and





                                     VII-45
<PAGE>   767
former directors, officers, employees, agents, attorneys, accountants, bankers,
investment bankers and other representatives, each of their respective
successors, executors, administrators, heirs and assigns, and each official
committee appointed in the Reorganization Case and Columbia's reorganization
case and their professionals, will be released as of that date from the
Intercompany Claims and from any and all Claims arising from or related to the
transactions which are the subject of the Intercompany Claims, and the
Confirmation Order will enjoin the prosecution by any entity, whether directly,
derivatively or otherwise, of any Claim, debt, right, cause of action or
liability which was or could have been asserted in connection with the
Intercompany Claims.  Acceptance of the Plan shall constitute consent to the
settlement of the Intercompany Claims Litigation.

         F.      SETTLEMENT OF CUSTOMER REFUND DISPUTES

         As of the Effective Date, and except as provided in the Customer
Settlement Proposal, in consideration of the various settlements and agreements
contained in the Customer Settlement Proposal, which shall be approved by the
Bankruptcy Court pursuant to the Plan, the Refund Claims and Refund Disputes
held by Customers shall be deemed settled, released and discharged.  Columbia,
TCO, Reorganized TCO, and each of their respective affiliates, and each of
their respective present and former directors, officers, employees, agents,
attorneys, accountants, bankers, investment bankers and other representatives,
and each





                                     VII-46
<PAGE>   768
of their respective heirs, executors, administrators, successors, and assigns,
and each official committee appointed in the Reorganization Case and Columbia's
reorganization case and their professionals, shall be released as of that date
from such Refund Claims and Refund Disputes and from any and all claims arising
from or related to the transactions that are the subject of such Refund Claims
and Refund Disputes, and the Confirmation Order will enjoin the prosecution by
any entity, whether directly, derivatively or otherwise, of any claim, debt,
right, cause of action or liability which was or could have been asserted in
connection with such Refund Claims and Refund Disputes.

         The Bankruptcy Court's approval of the Customer Settlement Proposal
shall bind all supporters as defined therein, to the settlement of all
litigation involving Refund Disputes and the Intercompany Claims.  Dissenting
3.2 Claimants may elect to continue to litigate the Refund Disputes.

         G.      SETTLEMENT OF 1990 RATE CASE

         If Class 3.2 accepts the Plan, the Confirmation Order shall provide
that, as of the Effective Date, the 1990 Rate Case Settlement as modified by
the Plan shall be deemed approved and final on the terms set forth in the
Customer Settlement Proposal.





                                     VII-47
<PAGE>   769
         H.      PROCEDURES FOR ESTABLISHING ALLOWED CLAIMS AND FOR RESOLVING
                 DISPUTED CLAIMS; BAR DATES

         Several Bar Dates for the filing of Claims have been established by
order of the Bankruptcy Court during the Reorganization Case.  See Section
IV.D.9.a, "Bar Dates."

         As described below, the Plan establishes additional Bar Dates covering
certain categories of Administrative Claims.  The purpose of these Bar Dates is
to enable TCO to ascertain the amounts claimed in these categories so as to
give TCO a more accurate picture of its obligations under the Plan and to
expedite the Claims resolution process.

                 1.       BAR DATES FOR CERTAIN ADMINISTRATIVE CLAIMS

                          a.        PROFESSIONAL CLAIMS

         Professionals or other entities requesting compensation or
reimbursement of expenses pursuant to sections 327, 328, 330, 331, 503(b) or
1103 of the Bankruptcy Code for services rendered before the Effective Date
(including compensation requested pursuant to section 503(b)(4) of the
Bankruptcy Code by any Professional or other entity for making a "substantial
contribution" in TCO's Reorganization Case) will be required to File and serve
on Reorganized TCO, the U.S. Trustee, and the Fee Examiner an application for
final allowance of compensation and reimbursement of expenses no later than
thirty (30) days after the Effective Date; provided, however, that any
Professional who may receive compensation or reimbursement of expenses pursuant
to the Administrative Fee Order or other such order of the Bankruptcy Court may
continue to receive such compensation and





                                     VII-48
<PAGE>   770
reimbursement of expenses for services rendered before the Effective Date.
Objections to applications of Professionals or other entities for compensation
or reimbursement of expenses must be Filed and served on Reorganized TCO, the
U.S. Trustee, the Fee Examiner, and the requesting party no later than sixty
(60) days after the Effective Date.

                          b.        BAR DATE FOR ADMINISTRATIVE CLAIMS ARISING
                                    FROM REJECTION OF EXECUTORY CONTRACTS

         If the rejection of an executory contract or unexpired lease pursuant
to the Plan or the Confirmation Order gives rise to an Unsecured Claim or
Administrative Claim by the other party or parties to such contract or lease,
such Claim will be forever barred and will not be enforceable against TCO,
Reorganized TCO or its successors, or the properties of any of them, unless
such parties file and serve a request for payment, with respect to
Administrative Claims, or a proof of Claim, with respect to other Claims, on
Reorganized TCO within the later of (a) the time period established by the
Bankruptcy Court in its Final Order authorizing such rejection and (b) on the
thirtieth day after the Effective Date.  Objections to any request for payment
or proof of Claim must be Filed no later than the sixtieth day after the
Effective Date.





                                     VII-49
<PAGE>   771
                 2.       BAR DATE FOR OBJECTIONS TO CERTAIN NON-ADMINISTRATIVE
                          CLAIMS

                          a.        CLAIMS SUBJECT TO THE CLAIMS ESTIMATION
                                    PROCEDURES

         All objections by TCO and all other parties-in-interest to Producer
Claims which are the subject of the Claims Estimation Procedures will be
governed by the provisions of the Claims Estimation Procedures or by other
orders of the Bankruptcy Court relating to such Claims.

                          b.        OBJECTIONS TO OTHER NON-ADMINISTRATIVE
                                    CLAIMS

         Any non-Administrative Claim which was not Filed at least thirty (30)
days prior to the date of the hearing on the Disclosure Statement may be
objected to by TCO or Reorganized TCO, or the TCO Committees by the later of
(a) the Effective Date and (b) sixty (60) days after a proof of Claim with
respect to such Claim has been Filed.  Any such Claim that has not been
objected to on or prior to such date will be an Allowed Claim in the
appropriate Class.

                 3.       AUTHORITY TO PROSECUTE OBJECTIONS

         Subject to the Bar Dates and other limitations described above, after
the Effective Date, only Reorganized TCO will have the authority to File
objections to Claims, and will have authority to settle, compromise, withdraw
or litigate to judgment objections to Claims Filed by it, upon notice to the
other party and subject to the approval of the Bankruptcy Court.


                                     VII-50
<PAGE>   772
Reorganized TCO shall File all such objections to Claims (other than Producer
Claims) within one hundred twenty (120) days after the Effective Date.  See
Section VII.I.5, "Dissolution of Committees."

                 4.       LIQUIDATION OF CLAIMS FOR VOTING

         TCO intends to file a motion with the Bankruptcy Court for an order
establishing, for voting purposes only, the Allowed amount of Claims which are
Disputed Claims on the Plan Mailing Date, through use of Claim amounts as
Filed, the proposed Settlement Values and Allowance Amounts and the Allowed
amounts for Customer Regulatory Claims set forth on the schedules to the
Customer Settlement Proposal, or other appropriate Claims quantification
procedures which are approved by the Bankruptcy Court.  See Section IX.C.1,
"Voting Procedures and Requirements; Voting Requirements-Generally."

         I.      MISCELLANEOUS

                 1.       CONDITIONS TO CONFIRMATION AND EFFECTIVENESS

         Section VII of the Plan contains the conditions to Confirmation of the
Plan and the Effective Date.  Each such condition may, except as otherwise
indicated, be waived by TCO at its option, with the prior consent of Columbia.

                          a.        CONDITIONS TO CONFIRMATION

                          (i)       The Bankruptcy Court has entered an order,
pursuant to section 1129 of the Bankruptcy Code, confirming a Plan of
Reorganization for Columbia which provides for Columbia to fulfill the terms of
the Columbia Omnibus Settlement and the





                                     VII-51
<PAGE>   773
Columbia Guaranty and for the financing of Reorganized TCO on terms reasonably
satisfactory to TCO and Columbia.

                          (ii)      Any authorization or approval required
under the HCA with respect to Columbia or Reorganized TCO of the transactions
contemplated by the Plan or the Plan of Reorganization for Columbia has been
obtained.  This condition is waivable by TCO only if it is made an unwaivable
condition to the Effective Date.

                          (iii)  There shall have been no material adverse
change to TCO's or Columbia's business, properties, results of operations
business prospects, or financial condition between the Plan Mailing Date and
the Confirmation Date.

                          (iv)      No material environmental liability Claim
shall have been Filed by any entity, including, without limitation, any state
or federal environmental or regulatory agency, asserting actual or potential
liability against TCO, other than Claims Filed pursuant to consensual
settlement agreements between TCO and such state or federal environmental or
regulatory agency or other entity.  This condition is waivable by TCO only if
it is made a condition to the Effective Date that is waivable only after giving
the Official Committee of Equity Holders appointed in Columbia's reorganization
case notice and an opportunity to be heard.

                          (v)       TCO and Columbia shall have received a
ruling from the IRS, in form and substance satisfactory to TCO and Columbia, to
the effect that with respect to the payments





                                     VII-52
<PAGE>   774
made by TCO under the Plan that are attributable to the breach, termination or
rejection of gas purchase contracts are deductible when paid by TCO for Federal
income tax purposes.  If this condition has not been satisfied by December 15,
1995, then Columbia and TCO shall, by December 31, 1995, (a) either waive the
receipt of such ruling as a condition to Confirmation or the Effective Date, as
appropriate or (b) all settlements of Producers' Claims shall be null and void.
This condition is waivable by TCO only if it is made a condition to the
Effective Date that is waivable only after giving the Official Committee of
Equity Holders appointed in Columbia's reorganization case notice and an
opportunity to be heard.

                          (vi)      The Bankruptcy Court shall have entered on
order which approves the settlement, in accordance with the Plan, of the Refund
Disputes with Accepting Class 3.2 Claimants, and the 1990 Rate Case Settlement
(as amended by the Customer Settlement Proposal) and approves the Customer
Settlement Proposal and TCO's implementation thereof and the Bankruptcy Court's
order shall not have been vacated, reversed or stayed.  FERC shall have entered
a Final FERC Order approving the Customer Settlement Proposal.  This condition
is waivable by TCO only if it is made a condition to the Effective Date that is
only waivable with the prior consent of the Sponsoring  Parties (as defined in
the Customer Settlement Proposal).

                          (vii)  The Bankruptcy Court shall have entered an
order approving the Initial Accepting Producers Settlement and





                                     VII-53
<PAGE>   775
such order shall not have been vacated, reversed or stayed and the Initial
Accepting Producers Settlement shall not have been terminated pursuant to
Paragraph 14 thereof.

                          (viii)    The Plan shall not have been amended,
modified, waived, supplemented or withdrawn, in whole or in part, without the
prior consent of Columbia, and without the prior consent of (i) the Creditors'
Committee, if such revisions would (a) change the Original Settlement Values
set forth on Schedule I, (b) change the amount, timing or composition of
distributions to Class 3.1, 3.3 or 3.4, (c) change the conditions to
Confirmation or to the Effective Date or (d) otherwise materially affect the
treatment of Unsecured Creditors, other than Customers, under the Plan or (ii)
the Customers' Committee, if such revisions would (a) change the amount, timing
or composition of distributions to Class 3.2, (b) change the conditions to
Confirmation or to the Effective Date, or (c) otherwise materially affect the
treatment of Accepting Class 3.2 Claimants under the Plan.

                          (ix)      The Accepting Producer Percentage shall be
not less than ninety (90%) percent.  This condition may be waived only with the
prior consent of the Initial Accepting Producers.  This condition is waivable
by TCO only if it is made a condition to the Effective Date that is waivable
only after giving the Official Committee of Equity Holders appointed in
Columbia's reorganization case notice and an opportunity to be heard.





                                     VII-54
<PAGE>   776
                          b.        CONDITIONS TO EFFECTIVE DATE

                          (i)       The order of the Bankruptcy Court
confirming Columbia's Plan of Reorganization shall not have been vacated,
reversed or stayed, and Columbia's Plan of Reorganization shall have become
effective on terms consistent with the Plan.

                          (ii)      The Confirmation Order shall not have been
vacated, reversed or stayed.

                          (iii)     There shall have been no material adverse
change to TCO's or Columbia's business, properties, results of operations,
financial condition, or business prospects between the Confirmation Date and
the Effective Date.

                          (iv)      The Effective Date shall have occurred on
or before June 28, 1996, provided, however, that if the Effective Date has not
occurred, unless TCO, with Columbia's prior consent, the Initial Accepting
Producers, the Creditors' Committee or the Customers' Committee elect to notify
all other parties referenced in this paragraph of their intent to terminate the
Plan, the Plan shall become effective on such later date as all other
conditions to the Effective Date have been satisfied or waived.

                          (v)  The Stipulation of Dismissal with Prejudice of
the Intercompany Claims Litigation shall have been filed with the District
Court.

                          (vi)  Each of the conditions to Confirmation that was
made a condition to the Effective Date has been satisfied.





                                     VII-55
<PAGE>   777
         Accepting Class 3.2 Claimants are not bound to support the Plan if the
Effective Date and the entry of a Final FERC Order approving the Customer
Settlement Proposal fail to occur on or before June 30, 1996.

                 2.       ASSUMPTION AND REJECTION OF EXECUTORY CONTRACTS

         During the Reorganization Case, TCO has assumed and rejected various
executory contracts under section 365 of the Bankruptcy Code.  Except as
otherwise provided in the Plan or in any contract, instrument, release,
indenture or other agreement or document entered into in connection with the
Plan, on the Effective Date, (i) all of TCO's executory contracts that have not
been expressly assumed or rejected by order of the Bankruptcy Court as of the
Confirmation Date and that are listed on Exhibit 3 to the Disclosure Statement
will be assumed or rejected or otherwise dealt with as set forth on said
Exhibit 3 and (ii) all other executory contracts that have not been so
expressly assumed will be rejected.  Exhibit 3 also includes executory
contracts that TCO believes have expired, terminated or been superseded by
operation of law subsequent to the Petition Date.  Executory Contracts between
TCO and its Customers will receive the treatment provided for in Article XII of
the Customer Settlement Proposal.

         TCO will comply with all FERC orders and other regulatory requirements
relating to assumed service contracts or as otherwise necessary to protect and
preserve its certificated service rights and obligations.





                                     VII-56
<PAGE>   778
         Any arrearages under executory contracts assumed under the Plan will
be satisfied by the payment of such arrearages, or on such other terms as TCO
and the party or parties to such executory contract shall agree.  Executory
contracts and leases, and all other obligations, entered into or incurred by
TCO after the Petition Date will survive and be unaffected by the Plan and the
Confirmation Order.

                 3.       CONTINUED CORPORATE EXISTENCE AND VESTING OF ASSETS
                          IN REORGANIZED TCO

         TCO will continue to exist after the Effective Date as a Delaware
corporation with all the powers of a corporation under applicable law.

                 4.       CORPORATE GOVERNANCE, DIRECTORS AND OFFICERS;
                          COMPENSATION

         The corporate governance of Reorganized TCO will remain essentially
unchanged.

         Those persons serving as the directors and officers of TCO as of the
date hereof will continue to serve in their same capacities on behalf of
Reorganized TCO after Confirmation subject to such changes as may occur in the
ordinary course of business.

                                   DIRECTORS

<TABLE>
<CAPTION>
NAME                                              DESCRIPTION
- ----                                              -----------
<S>                                    <C>
John H. Croom                          Chairman of the Board, President and CEO
                                       of Columbia Gas System, Inc.

Daniel L. Bell, Jr.                    Senior Vice President, Chief Legal
                                       Officer and Secretary of Columbia Gas
                                       System, Inc.

</TABLE>




                                     VII-57
<PAGE>   779
<TABLE>
<S>                                    <C>
Michael O'Donnell                      Senior Vice President and Chief Financial
                                       Officer of Columbia Gas System, Inc.

James P. Holland                       Chairman of the Board and CEO of TCO

R. Larry Robinson                      President of TCO

Mark P. O'Flynn                        Senior Vice President and Chief Financial
                                       Officer of TCO
</TABLE>


         All of the Directors of TCO are currently officers of either TCO or
Columbia.  The Directors are not separately compensated for their service as
Directors of TCO. The following table sets forth all compensation(1) paid by TCO
in fiscal year 1994 to each of the seven most senior executives of TCO:

<TABLE>
<CAPTION>
Name of
Individual        Position at TCO                               Age    Compensation
- ----------        ---------------                               ---    ------------
<S>               <C>                                           <C>    <C>
M.W. Casdorph     Sr. Vice President                            46     258,412.90
J.P. Holland      Board Chairman & CEO                          46     329,020.00
G.L. Kettering    Sr. Vice President                            40     298,964.20
M.P. O'Flynn      Sr. Vice President/Chief Financial Officer    44     229,376.70
B.D. Perine       Sr. Vice President                            59     314,986.27
R.L. Robinson     President                                     50     266,944.25
S.J. Small        General Counsel & Secretary                   48     225,711.78
</TABLE>

                 5.       DISSOLUTION OF COMMITTEES

         The Creditors' Committee and the Customers' Committee shall continue
in existence until the Effective Date for the principal purposes of
participating in the reconciliation and resolution of Disputed Claims and in
overseeing the implementation of the Plan.  On the Effective Date, except as
provided in the following sentence, the Creditors' Committee and the Customers'
Committee shall dissolve and the members of those Committees as


- ---------------
(1)  The non-cash portion of such compensation is not material.
     Compensation includes thrift plan restoration or pension
     plan restoration, if any, paid in 1994.

                                     VII-58
<PAGE>   780
such shall be released and discharged from all rights and duties arising from
or related to the Reorganization Case.  The Creditors' Committee will continue
in existence after the Effective Date, and the Professionals retained by the
Creditors' Committee may continue to be employed after the Effective Date, to
represent Unsecured Creditors' interests (a) with respect to any appeal taken
from the Confirmation Order or from the order approving the Initial Accepting
Producers Settlement and (b) by reviewing proposed settlements of Unsecured
Claims, other than Customer Regulatory Claims.  The Professionals retained by
the Creditors' Committee and the Customers' Committee and the members thereof
shall not be entitled to compensation or reimbursement of expenses for any
services rendered after the Effective Date, except for (a) services performed
by the Creditors' Committee and the Professionals retained by the Creditors'
Committee after the Effective Date as described in the preceding sentence or
(b) services rendered and expenses incurred in connection with any applications
for allowance of compensation and reimbursement of expenses pending on the
Effective Date or Filed and served after the Effective Date pursuant to Section
VI.B.1.  After the Effective Date, the Creditors' Committee may, in its
discretion, dissolve upon notice to Reorganized TCO.  Upon such dissolution,
the members of the Creditors' Committee shall be released and discharged from
all rights and duties arising from or related to the Reorganization Case.  The
Professionals retained by the





                                     VII-59
<PAGE>   781
Creditors' Committee and the members of such Committee must submit monthly
bills to Reorganized TCO for such services and Reorganized TCO shall pay all
reasonable costs and expenses of such Committee members and all reasonable fees
and expenses of their Professionals from post-reorganization income.  Any
dispute regarding compensation for such post-Effective Date services shall be
determined by the Bankruptcy Court.

                 6.       DISCHARGE, TERMINATION, AND INJUNCTION

         Section X of the Plan sets forth provision releasing and discharging
TCO from Claims and other obligations arising prior to the Confirmation Date and
enjoining the prosection of such Claims and obligations.  Section V.E of the
Plan provides for the release of all security interests in property of TCO,
except as otherwise provided in the Plan.

                 7.       CONTINUATION OF RETIREE PROGRAM

         All employee and retiree benefit plans or programs in existence as of
the Petition Date will continue after the Effective Date as required by sections
1114(e)(1)(B) and 1114(g) of the Bankruptcy Code.

                 8.       JURISDICTION OF THE BANKRUPTCY COURT

         Section XI of the Plan specifies certain matters with respect to which
the Bankruptcy Court will retain jurisdiction after the Effective Date to the
extent legally permissible.  In particular, the Bankruptcy Court's retention of
jurisdiction will include, without limitation, the resolution of Claims,





                                     VII-60
<PAGE>   782
including the Claims Estimation Procedures, and any disputes arising over the
distribution of assets under the Plan.

                 9.       LIMITATION OF LIABILITY

         The Plan limits the liability of TCO, Reorganized TCO, Columbia, their
affiliates and their respective directors, officers, employees, agents,
representatives and professionals (acting in such capacity), and the Creditors'
Committee and the Customers' Committee and their respective members and
Professionals (acting in such capacity), the Official Committee of Unsecured
Creditors and the Official Committee of Equity Holders appointed in Columbia's
Chapter 11 Case and their respective members and professionals (acting in such
capacity), and their respective heirs, executors, administrators, successors and
assigns, with respect to their actions or omissions in connection with the
Reorganization Case, the Plan, the Disclosure Statement and related
transactions.  However, this limitation of liability does not extend to any act
or omission which is determined to have constituted gross negligence or willful
misconduct.

                 10.      MODIFICATION OF THE PLAN

         Subject to the restrictions on modifications set forth in section 1127
of the Bankruptcy Code, TCO, with the prior consent of Columbia and any other
party whose consent is required under the Plan, reserves the right to alter,
amend or modify the Plan (but not the Customer Settlement Proposal or the
Initial Accepting Producers Settlement Agreement) before its substantial





                                     VII-61
<PAGE>   783
consummation; provided, however, that no alterations, amendments or
modifications that would conflict with the Plan will be made without the
consent of TCO or Reorganized TCO and Columbia or Reorganized Columbia and such
other parties in accordance with Section VIII of the Plan.

                 11.      REVOCATION OF THE PLAN

         TCO, with the prior consent of Columbia, reserves the right to revoke
or withdraw the Plan prior to the Confirmation Date.  If TCO revokes or
withdraws the Plan, or if Confirmation does not occur, then the Plan will be
null and void in all respects, and nothing contained in the Plan shall: (i)
constitute a waiver or release of any Claims by or against, or any Interests in,
TCO or Columbia, (ii) prejudice in any manner the rights of TCO or Columbia or
(iii) constitute an admission against TCO or Columbia.

                 12.      SEVERABILITY OF PLAN PROVISIONS

         If any term or provision of the Plan (excluding the Customer Settlement
Proposal and the Initial Accepting Producers Settlement Agreement) is held by
the Bankruptcy Court to be invalid, void or unenforceable, the Bankruptcy Court
will have the power to alter and interpret such term or provision to make it
valid or enforceable to the maximum extent practicable, consistent with the
original purpose of the term or provision held to be invalid, void or
unenforceable, and such term or provision shall then be applicable as altered or
interpreted.  In the event of any such holding, alteration or interpretation,





                                     VII-62
<PAGE>   784
the remainder of the terms and provisions of the Plan may, at TCO's option,
with the prior consent of Columbia, remain in full force and effect and not be
deemed affected, impaired or invalidated by such holding, alteration or
interpretation.  However, TCO and Columbia jointly and severally reserve the
right not to proceed to Confirmation or consummation of the Plan if any such
ruling occurs.  TCO and Columbia may not modify the Customer Settlement
Proposal.  The Confirmation Order will constitute a judicial determination and
shall provide that each term and provision of the Plan, as it may have been
altered or interpreted in accordance with the foregoing, is valid and
enforceable pursuant to its terms.

                 13.      SUCCESSORS AND ASSIGNS

         The rights, benefits and obligations of any entity named or referred to
in the Plan will be binding on, and shall inure to the benefit of, any heir,
executor, administrator, successor or assign of such entity.  From and after the
Voting Deadline, any heir, executor, administrator, successor or assign of any
Creditor who has voted to accept the Plan shall be bound to accept the Plan and
the treatment of such Creditor thereunder.





                                     VII-63
<PAGE>   785
VIII.    RISK FACTORS RELATING TO PLAN IMPLEMENTATION AND CREDITOR DISTRIBUTIONS

         TCO's ability to implement the Plan as well as the timing and, in some
cases, ultimate amount, of Creditor distributions are subject to a number of
risk factors which could materially impact their outcome.  Each Creditor
entitled to vote on the Plan should carefully consider the risk factors
enumerated or referred to below, as well as all the information contained in
this Disclosure Statement, including the exhibits hereto, in determining
whether to accept or reject this Plan.

         A.      CONDITIONS TO CONFIRMATION REQUIREMENTS

         The Plan provides that the Bankruptcy Court shall not issue the
Confirmation Order unless and until certain conditions precedent have been
satisfied or waived (if waivable) at TCO's option with the prior consent of
Columbia, or as otherwise indicated below.

                 1.       SATISFACTION OF CONFIRMATION REQUIREMENTS OF SECTION
                          1129/CRAM-DOWN

         Since TCO's Plan presumes effective settlement agreements with the
overwhelming majority in amount of its Creditors including Producers, Customers
and Columbia, TCO believes it will be accepted by all classes of Claims and
Interests.  In the event, however, that any of Classes 3.2, 3.3 or 3.4 reject
their treatment under the Plan, so long as one impaired Creditor class has
accepted the Plan, TCO reserves the right to seek confirmation pursuant to the
"cram-down" provisions of 11 U.S.C. Section  1129(b).  A contested confirmation
process under the cram-down

                                     VIII-1
<PAGE>   786
procedures could lead to significant and protracted litigation over many legal
issues, the outcome of which is difficult to predict, but which could in any
event delay confirmation past the point at which settlement agreements with the
Initial Accepting Producers and certain Customers remain in place, and past the
point where the financial assumptions underlying the Plan remain current and
viable.

         There are many other statutory conditions to confirmation set forth in
Chapter 11 of the Bankruptcy Code, including Section 1129(a) (requirements for
confirmation), Section 1125 (post-petition disclosure and solicitation),
Section 1122 (classification of Claims and Interests) and Section 1123
(contents of Plan) which must be complied with in order for the Plan to be
confirmed.  TCO believes it will meet the requirements of those sections as of
the Confirmation Date.  See Sections X and XI of this Disclosure Statement for
further discussion of certain confirmation requirements.

                 2.       CONFIRMATION OF THE COLUMBIA PLAN

         The Plan is premised upon Columbia's implementation of the Columbia
Omnibus Settlement, whereby Columbia has agreed, conditioned on consummation of
the Plan without any modification that is not consented to by Columbia, to
facilitate the prompt emergence of TCO from its Chapter 11 proceedings by,
among other things, accepting TCO debt securities and retaining the equity of
TCO in satisfaction of the Columbia Secured Claim, monetizing the distributions
payable to TCO's Creditors under the Plan, and





                                     VIII-2
<PAGE>   787
guaranteeing the payment levels provided under the Plan to TCO's Creditors.
Thus, the confirmation and consummation of a plan of reorganization for
Columbia which permits the implementation of the Columbia Omnibus Settlement,
and provides a means for Columbia to satisfy its own debts and finance its
obligations under the Plan is a condition precedent to consummation of TCO's
Plan.

         While Columbia believes its Plan will be confirmed and consummated in
a timely manner, the Columbia Plan must be accepted by at least one impaired
Class of Creditors and confirmed by the Bankruptcy Court before it can become
effective.  There is, thus, the possibility that the Plan may be delayed by the
progress of confirmation of a plan of reorganization for Columbia.  Any delay
could have a negative impact on the timing of implementation of TCO's Plan and
TCO's ability to make the distributions to Creditors provided therein.

         Failure to confirm and consummate a plan of reorganization for
Columbia which permits the implementation of the Columbia Omnibus Settlement on
or before the proposed Effective Date of the Plan could have a significant
adverse impact on distributions to TCO's Creditors, since

                 (i) the Initial Accepting Producer Settlement and the Customer
Settlement Proposal which form the foundation of the TCO Plan will not remain
binding on the parties indefinitely and dissolutions of those settlements could
adversely impact the





                                     VIII-3
<PAGE>   788
level of claims and the amounts available to satisfy creditors, and

                 (ii) significant funding and other financial concessions from
Columbia are necessary to ensure full implementation of the TCO Plan.

                 3.       SEC APPROVAL

         As described in more detail in Section VI.A, "The Columbia System:
Public Utility Holding Company Act Regulation, System Financing, Columbia's
Claim Against TCO and the Intercompany Claims," Columbia is a regulated public
utility holding company under the HCA.  All financing of Columbia is regulated
under the HCA and must be approved by the SEC.  Thus, since Columbia's plan of
reorganization will involve a substantial restructuring of its current debt and
equity financing, as well as the restructuring of intercompany debt with TCO,
such plan will require SEC approval, through a process of public disclosure
which will take time to implement.  Although TCO is not directly regulated
under the HCA, because of the relationship between the TCO and Columbia plans
primarily because of the Columbia Omnibus Settlement, certain aspects of the
Plan will also require SEC approval.

         Additionally, the Columbia plan of reorganization, confirmation of
which is a condition of the Plan, also requires SEC approval.  See Section V.B,
"Regulation by the SEC under the HCA of the Columbia System; HCA Regulation of
Chapter 11 Plans."  It is possible, though unlikely in the Debtors' view, that
the





                                     VIII-4
<PAGE>   789
SEC will find the financing obligations undertaken by Columbia in its plan of
reorganization to be unacceptable, or will object on other grounds to some
aspect of the Columbia or TCO plans of reorganization, which objection may
delay or even prevent implementation of the Columbia Omnibus Settlement, the
Columbia Plan and TCO's Plan.  Thus, the condition of entry of an SEC order may
be waived but only if made an unwaivable condition to the Effective Date.  TCO
believes, but cannot assure, that such approvals can be obtained in a timely
manner.

                 4.       NO MATERIAL ADVERSE CHANGES TO PLAN ASSUMPTIONS OR
                          BUSINESS

         The Columbia Omnibus Settlement and Columbia's agreement contained
therein to "monetize" TCO's value for Creditors is based, in part, upon an
assumption by Columbia and TCO of the reasonable business risks reflected in
TCO's current business plan.  The major assumptions underlying TCO's business
plan are more fully set forth in Section XI of this Disclosure Statement.  Any
material adverse change to TCO's business operations or financial condition
between the Plan Mailing Date and the Confirmation Date could materially impact
TCO's ability to achieve the results forecasted in its business plan and, thus,
significantly affect Columbia's ability to perform its obligations under the
Columbia Omnibus Settlement, and under its own reorganization plan, potentially
to the point of rendering Columbia's participation in the Plan unfeasible.





                                     VIII-5
<PAGE>   790
                 5.       NO ENVIRONMENTAL LIABILITY CLAIMS

         TCO is subject to extensive federal, state and local laws and
regulations relating to environmental matters.  Since the Plan and the Columbia
Omnibus Settlement contemplate assumption by Reorganized TCO of environmental
compliance and remediation obligations to state and Federal environmental
enforcement and regulatory agencies (with the exception of certain
non-consensual pre-petition penalty Claims which might be asserted), the Plan
is conditioned on the continuance of (i) the current status whereby
governmental agencies do not file environmental Claims in TCO's Reorganization
Case, and (ii) TCO's program for resolution of environmental issues, previously
approved by the Bankruptcy Court, as reflected in the current settlement
agreement with the EPA and with other environmental agencies.  See Section
IV.C.9, "Other Significant Claims and Related Litigation; Environmental
Issues." Should the status change materially, and TCO's program for resolving
such liabilities outside of the bankruptcy process fail, resulting in the
filing of significant unanticipated Claims in TCO's Reorganization Case by
environmental authorities, TCO may not be able to implement the Plan, or there
may be substantial delay in the implementation.

                 6.       IRS RULING ON DEDUCTIBILITY OF PRODUCER PAYMENTS

         As described more fully in Section IX.A.3, "Tax Ruling," TCO or
Columbia, or both, will apply to the IRS for a tax ruling to the effect that
payments made by TCO under the Plan that are





                                     VIII-6
<PAGE>   791
attributable to the breach, termination or rejection of gas purchase contracts
are currently deductible for Federal income tax purposes.  Because of the
magnitude of the payments under the Plan in respect of Contract Rejection
Claims, failure to obtain a favorable ruling from the IRS on this issue could
undermine the financial foundations for the Plans, and might result in a
determination by Columbia not to proceed with the Plan.

         TCO has agreed that if such ruling has not been received by December
15, 1995, TCO and Columbia must determine by December 31, 1995 whether to waive
the condition.  If they fail to do so, the Initial Accepting Producers'
Settlement can be terminated by TCO, Columbia, or the Initial Accepting
Producers, in which case the Plan may not be confirmed.  While TCO believes the
ruling should be obtainable in a timely manner, failure to do so could derail
or delay the Plan process.

                 7.       APPROVALS OF THE CUSTOMER SETTLEMENT PROPOSAL

         As described in detail in Section IV of this Disclosure Statement, the
Plan incorporates the terms of the Customer Settlement Proposal.  The Customer
Settlement Proposal will be implemented by TCO only if Class 3.2 votes in favor
of the Plan.  If Class 3.2 rejects the Plan, TCO, Columbia and the Customers
are not bound by the terms of the Customer Settlement Proposal.  Nevertheless,
if TCO and Columbia so elect, the Plan may be confirmed, despite the rejection
by Class 3.2, through a cramdown under Section 1129(b) of the Bankruptcy Code.





                                     VIII-7
<PAGE>   792
         If Class 3.2 were to vote to reject the Plan, the aggregate Allowed
amounts of the Customer Regulatory Claims may be significantly greater than the
amounts resulting from the Customer Settlement Proposal as implemented in the
Plan, and TCO's financial projections may be materially adversely affected by
the failure to resolve Order No. 636 recovery rights.  In addition, Dissenting
Class 3.2 Claimants would have to litigate the level and priority of
substantially all of their Refund Disputes.  Depending upon the outcome of such
litigation, which would involve both FERC and Bankruptcy issues, the ultimate
payout on their Claims might be greater than or less than the amounts to be
paid if Class 3.2 accepts the Plan, but would in any event be subject to
substantial uncertainty and delays in payment.

         It is a condition to confirmation, which may be made a condition to
the Effective Date, that the Bankruptcy Court shall have entered an order
approving the settlement of Refund Disputes with Accepting Class 3.2 Claimants,
the 1990 Rate Case Settlement (as amended by the Customer Settlement Proposal)
and approving those aspects of the Customer Settlement Proposal subject to its
jurisdiction, and TCO's implementation thereof.  It is a further condition that
FERC shall have entered a Final FERC Order approving the Customer Settlement
Proposal.  If such approval is not obtained, the Settlement may never become
effective.





                                     VIII-8
<PAGE>   793
         Concurrently with the filing of the Plan, TCO is filing the Customer
Settlement Proposal with the FERC.  TCO believes it will obtain a Final FERC
Order approving the Customer Settlement Proposal in a timely manner, but cannot
assure that protests will not be filed by some interested party or that FERC's
decision will be issued within a certain time period.

         In addition, the effectiveness of the Customer Settlement Proposal is
conditioned upon it being approved by FERC without modification or with
modifications acceptable to all of the sponsoring parties under the Settlement.
If not approved by FERC or if amended with modifications unacceptable to any
such parties or to TCO, the failure to obtain FERC approval could have the same
adverse impact as a failure to obtain Bankruptcy Court approval of the Customer
Settlement.

                 8.       APPROVAL OF INITIAL ACCEPTING PRODUCERS SETTLEMENT

         It is a condition to confirmation and effectiveness of the Plan that
the Initial Accepting Producers' Settlement has been approved by the Bankruptcy
Court not later than October 31, 1995, and not terminated in accordance with
its terms.  This condition can be waived by TCO only with the consent of the
Initial Accepting Producers.  A motion to approve the Settlement will be filed
with the Bankruptcy Court concurrently with the Plan, and is expected to be
heard by the Bankruptcy Court prior to or concurrently with the hearing on the
Disclosure Statement.  Should the Court disapprove the Settlement, or the
proposed





                                     VIII-9
<PAGE>   794
allowance amounts for any of the Initial Settling Producers, the Settlement
provides that it shall be null and void.

         Any material breach of the Settlement by TCO, Columbia, or, at the
option of TCO and Columbia only, any Initial Accepting Producer, will permit
any non-breaching party, at its option, to terminate the Settlement.  In
addition, the dismissal of TCO's Chapter 11 Case or the conversion of that Case
to Chapter 7 will permit termination of the Settlement.  Breach of the
Settlement by any Initial Accepting Producer will not release the other Initial
Accepting Producers.

         The Initial Accepting Producers' Settlement is a fundamental building
block to the Plan.  If the Settlement is not approved, or is breached or
terminated, it is unlikely that the Plan can be confirmed in its present form.

                 9.       PROHIBITION OF CERTAIN REVISIONS

         It is a condition to confirmation and consummation of the Plan that it
shall not be amended, modified, supplemented or revised without the prior
consent of Columbia, and without the prior consent of the Creditors' Committee
if such revisions would change the Settlement Values proposed for the Initial
Accepting Producers, change the amount, timing or composition of distributions
to Classes 3.1, 3.2 or 3.4, change the conditions to Confirmation or the
Effective Date, or otherwise materially affect the treatment of Unsecured
Creditors under the Plan.  TCO and Columbia do not anticipate making any such
revisions.

                 10.      ACCEPTANCE OF SETTLEMENT VALUES BY PRODUCERS





                                    VIII-10
<PAGE>   795
         If Producers holding at least ninety (90%) percent of the aggregate
Settlement Values proposed by TCO for the Claims of Producers, and all Initial
Accepting Producers, do not accept the Settlement Values, then TCO and Columbia
may choose not to proceed with confirmation of the Plan.  Because TCO and
Columbia have agreed to assume a certain amount of risk regarding the
litigation over Allowed amounts of the General Unsecured Claims of Rejecting
Producers, Columbia and TCO may or may not choose to accept additional risk if
this condition to confirmation is not met and may choose to modify the Plan or
to withdraw the Plan.  Until voting on the Plan has been completed, there can
be no assurance that Producers holding at least ninety (90%) percent of the
aggregate Settlement Values proposed by TCO for the Claims of Producers have
accepted such Settlement Values.

         B.      CONDITIONS TO EFFECTIVE DATE

         The Plan will not be consummated and the Effective Date will not occur
unless and until each of the following conditions precedent has been satisfied
or waived (if waivable) at TCO's and Columbia's option, except as otherwise
indicated.





                                    VIII-11
<PAGE>   796
                 1.       COLUMBIA'S PLAN OF REORGANIZATION SHALL BE EFFECTIVE

         Since the TCO Plan is premised on approval of a plan of reorganization
for Columbia pursuant to which Columbia will be authorized to and will become
able to fund the Columbia Omnibus Settlement, the order confirming Columbia's
Plan must not have been vacated, reversed or stayed, and Columbia's Plan must
have become effective on terms consistent with the Plan.
        
                 2.       NO STAY OF TCO'S CONFIRMATION ORDER

         The order confirming TCO's Plan shall not have been vacated, reversed
or stayed.

                 3.       NO MATERIAL ADVERSE CHANGES TO TCO'S BUSINESS

         There shall have been no material adverse changes to TCO's business,
properties, financial condition, results of operations or business prospects
between the Confirmation Date and the Effective Date.

                 4.       EFFECTIVE DATE

         A condition to the Effective Date of the Plan is that the Effective
Date shall have occurred on or before June 28, 1996.  It is a condition to the
Initial Accepting Producers' Settlement that distributions under the Plan shall
have occurred not later than June 28, 1996.  In addition, supporting parties
may not be bound to the Customer Settlement Proposal if the Plan does not
become effective by June 30, 1996.  The Effective Date may not occur by June
30, 1996 for a variety of substantive and scheduling reasons, including the
dates set by the Bankruptcy Court for hearings which are essential to the
Confirmation





                                    VIII-12
<PAGE>   797
process, and the timing of regulatory approvals and rulings from the SEC and
the IRS.

         However, TCO believes that there is ample time to meet the deadlines
set by the Plan, and that neither the Bankruptcy Court schedule nor the
regulatory rulings will derail the Confirmation process.  Should such deadline
be missed, the Settlements which underlie this Plan may become void, and there
is no assurance as to when or in what form a subsequent Plan can be filed and
confirmed.

                 5.       INTERCOMPANY CLAIMS LITIGATION

         The Bankruptcy Court must have approved the settlement and dismissal
with prejudice of the Intercompany Claims Litigation, which Order shall not
have been vacated, reversed or stayed as of the Effective Date.  Settlement of
the Intercompany Claims Litigation constitutes another fundamental building
block of the Plan, and is critical to the Columbia Omnibus Settlement.  Absent
this condition being met, it is possible that neither the Columbia or the TCO
Plans could become effective.

         C.      LIQUIDATION OF GENERAL UNSECURED CLAIMS; CLAIMS ALLOWANCE
                 PROCESS GENERALLY

         Another material factor affecting the amount and timing of
distributions to General Unsecured Creditors is the process of liquidation and
Allowance of Disputed Producer and Customer Claims.  Producer and Customer
Claims, as presently filed with the claims agent and the Bankruptcy Court, are
far in excess of the liabilities reflected in the Payout Analysis annexed
hereto as Exhibit 2.





                                    VIII-13
<PAGE>   798
         There is risk that some or all categories of Disputed Claims will be
resolved and Allowed in amounts in excess of those amounts currently projected
by TCO.  Under the Plan, Columbia and TCO agree to ensure payment to Dissenting
Creditors of the amounts provided for under the Plan, thus, assuming both Plans
become Effective, Creditors will in all likelihood receive the distributions to
which they are entitled.  However, for those Claims that remain Disputed on the
Effective Date, litigation to resolve such Disputed Claims could be protracted
and could result in a lengthy delay in the distributions to such Creditors.

         As to Producer Creditors, there is a Holdback Amount from their
distributions if less than one-hundred percent of Producers accept their
Settlement Values.  That Holdback is dedicated to the partial satisfaction,
together with contributions from Columbia and TCO, of the amounts payable to
Dissenting Producers if the minimum payout amount on their Allowed Claims
exceeds the proposed Settlement Values.  Depending on the ultimate level of
such excess allowances, some or all of the Holdback Amount may be utilized.

         In addition, if Dissenting Producers' Claims and the claims of
disputed Class 3.4 Claimants exceed the projected levels, they may, at TCO and
Columbia's option, receive a portion of their distributions in non-cash
securities of an equivalent fair market value to the amount owed.

         The Plan assumes the finality of the order of the Third Circuit Court
of Appeals dated March 10, 1995, regarding the Enterprise Energy Settlement
Agreement which held that the





                                    VIII-14
<PAGE>   799
Settlement Agreement was not an executory contract, but was an enforceable
pre-petition unsecured claim against TCO, the terms of which were binding on
parties to the settlement.  In the event that a petition for certiorari is
filed and granted, and the decision of the Third Circuit reversed, or if the
Enterprise Energy litigants were to seek and obtain other relief with respect
to the enforceability of the Settlement Agreement, there could be a significant
increase in the Allowed amounts of Enterprise Energy Claims in addition to
delay associated with the potential litigation regarding the issues previously
settled, which could adversely impact the final distribution date and amount.

         D.      PROJECTIONS

         The financial projections included in this Disclosure Statement are
dependent upon the successful implementation of TCO's business plan and the
reliability of the other assumptions contained therein.  See Section XI.B,
"Reorganized TCO -- Financial Projections; Recapitalization".  Those
projections reflect numerous assumptions, including confirmation and
consummation of the TCO Plan in accordance with its terms, the anticipated
future performance of TCO, industry performance, general business and economic
conditions and other matters, most of which are beyond the control of TCO and
some of which may well not materialize.  In addition, unanticipated events and
circumstances occurring subsequent to the preparation of the projections may
affect the actual financial results of TCO.  Therefore, the actual results
achieved throughout the periods





                                    VIII-15
<PAGE>   800
covered by the projections will vary from the projected results.  These
variations may be material.

         E.      LIABILITIES ASSUMED

         TCO will assume certain liabilities pursuant to its Plan, including
obligations, if any, to indemnify its officers, directors, employees and
agents, environmental, pension and miscellaneous other obligations.  TCO
believes that it will not suffer material exposure to adverse fluctuations in
its assumptions as to those liabilities, and that the costs thereunder will not
jeopardize the feasibility of its reorganization.





                                    VIII-16
<PAGE>   801
IX.  TAX ASPECTS OF THE PLAN

         A.      TAX CONSEQUENCES OF THE PLAN

         The following discussion is a summary of certain significant Federal
income tax consequences of the Plan to TCO and the TCO Creditors and is based
upon laws, regulations, rulings and court decisions now in effect, all of which
are subject to change, possibly with retroactive effect. The Federal income tax
consequences to a Creditor may vary based on the particular circumstances of
such Creditor. This summary does not address aspects of Federal income taxation
applicable to Creditors subject to special treatment for Federal income tax
purposes, including, but not limited to, financial institutions, tax exempt
entities, insurance companies and foreign persons. Moreover, the Federal income
tax consequences of certain aspects of the Plan are uncertain due to a lack of
definitive legal authority. Other than as specifically described below, no
rulings have been obtained or will be requested from the IRS with respect to
Federal income tax aspects of the Plan and no opinion of counsel has been
obtained by TCO with respect thereto. EACH CREDITOR IS STRONGLY URGED TO CONSULT
ITS OWN TAX ADVISOR REGARDING THE FEDERAL, STATE AND LOCAL INCOME AND OTHER TAX
CONSEQUENCES TO IT OF THE PLAN.

                 1.       TAX CONSEQUENCES TO TCO

                          a.      GENERAL

         TCO, together with Columbia and other Columbia subsidiaries
(collectively, the "Columbia Group"), files a consolidated

                                      IX-1


<PAGE>   802


Federal income tax return under the provisions of sections 1501 and 1504 of the
Internal Revenue Code of 1986, as amended (the "I.R.C."). Treasury Regulations
provide that Columbia, as parent of the consolidated group, is the group's agent
for purposes of filing the group's Federal income tax returns, paying the tax
due, and in general for dealing with the IRS. In addition, Treasury Regulations
provide that every corporation that is or has been a member of the Columbia
Group is severally liable for any tax incurred by the Columbia Group for the
period that such member joined in the filing of the consolidated return.

                          b.      DISCHARGE OF INDEBTEDNESS

         Under the I.R.C. a taxpayer generally must include in gross income the
amount of any cancellation of indebtedness ("COD") income that is realized
during the taxable year. COD income is the difference between the amount of the
taxpayer's indebtedness that is canceled and the amount and/or value of the
consideration exchanged therefor. However, section 108 of the I.R.C. provides
that a debtor in a case under title 11 of the Bankruptcy Code is not required to
recognize COD income (the "Bankruptcy Exception") but must instead reduce
certain of its "tax attributes" by the amount of unrecognized COD income. Tax
attributes include net operating and capital losses, certain tax credits
(including minimum tax credits), and the tax basis of a debtor's property (to
the extent that the aggregate tax basis of the debtor's property exceeds the
aggregate amount of the

                                      IX-2


<PAGE>   803



debtor's liabilities immediately after the discharge), and must be reduced in a
prescribed order. Alternatively, a debtor may make an election (a "Section 1017
Election") to first reduce the tax basis of any depreciable property (without
regard to the limitation for outstanding liabilities), with the balance of any
unrecognized COD income applied against its other attributes. In addition,
section 108 provides that cancellation of indebtedness does not result in COD
income to the extent that the payment of the indebtedness otherwise would have
given rise to a deduction (the "deductible expense exception").

         It is expected that payments made under the Plan (including payments
with respect to Contract Rejection Claims) to holders of Allowed Class 3 Claims
(other than the Columbia Unsecured Claim) will be treated as ordinary and
necessary expenses deductible under section 162 of the I.R.C. Therefore, TCO
will not realize COD income with respect to an Allowed Class 3 Claim for which
TCO has not previously accrued a deduction (or has accrued a deduction which is
less than the amount paid in satisfaction of such Claim), since payment of the
Allowed amount of such Claim would have been deductible to TCO and the
deductible expense exception therefore will apply. COD income may arise,
however, to the extent that the amount of a deduction previously accrued by TCO
with respect to an Allowed Class 3 Claim exceeds the amount paid in satisfaction
of such Claim, or with respect to Allowed Class 3 Claims which do not constitute
otherwise deductible expenses. To the extent that TCO realizes

                                      IX-3


<PAGE>   804



COD income, it is presently intended that a Section 1017 Election will be made
to first reduce the tax basis of TCO's depreciable property by the amount of the
COD income (unless the normal attribute reduction rules would produce a more
favorable result).

                          c.      DEDUCTION FOR PAYMENTS

         TCO intends to deduct certain payments made under the Plan with respect
to Allowed Class 3 Claims, including payments allocable to Claims for the
breach, termination or rejection of gas purchase contracts. See Section IX. A.5,
"Tax Consequences of the Plan; Tax Ruling." The amount of the deduction expected
to be claimed by TCO with respect to Allowed Class 3 Claims is likely to give
rise to a net operating loss carryback which would generate a refund of
previously paid Columbia Group Federal income taxes, or otherwise produce a
carryforward to subsequent years.

         Under Treasury Regulations which relate to consolidated groups, a
parent corporation is required to reduce its tax basis in a subsidiary
corporation for, among other things, losses or deductions of the subsidiary that
are used to offset taxable income of other members of the consolidated group. To
the extent that these negative adjustments reduce the parent corporation's tax
basis in its subsidiary below zero, the adjustments create a so-called "excess
loss account" which must be recognized as taxable income upon the occurrence of
certain enumerated events, including the realization by the subsidiary

                                      IX-4


<PAGE>   805



of COD income which neither is included in gross income nor reduces tax
attributes, and the claiming of a bad debt deduction by a member which is not
matched in the same year by the inclusion of a corresponding amount in the
income of the debtor-subsidiary. Columbia intends to take appropriate actions,
by capital contributions or otherwise, necessary to ensure that no income will
result to the Columbia Group attributable to an excess loss account in TCO.

                 2.       TAX CONSEQUENCES TO THE TCO CREDITORS OTHER THAN
                          COLUMBIA

         The following discussion assumes that all distributions under the Plan
made on account of Allowed Claims are made to original holders of such Claims
that do not hold such Claims as capital assets. It does not address the tax
consequences to purchasers of Claims or Creditors otherwise holding Claims as
capital assets. It also does not address the tax consequences of the
distribution to the current members of the Customers' Committee pursuant to
Section III.B.3.c. of the Plan.

         A Creditor that has not previously included in income amounts with
respect to its Claim and that surrenders such Claim pursuant to the Plan will be
required to recognize income in an amount equal to the amount such Creditor
receives under the Plan less any tax basis such Creditor has in its Claim. The
amount received under the Plan will include the amount of cash and the fair
market value of any other property received, any credits to rate mechanisms, and
any amounts treated as set-offs against claims made by TCO with respect to such
Creditor. Creditors

                                      IX-5


<PAGE>   806



that are cash basis taxpayers will be required to include such amounts in income
for the taxable year in which such distributions are received (or such credits
or set-offs applied). Creditors that are accrual basis taxpayers will be
required to recognize income when, and to the extent that, the amount of any
distribution that they will receive with respect to their Allowed Claims is
finally determined. A Creditor that has previously included in income all
amounts with respect to its Claim will not recognize any income upon the receipt
of payments made pursuant to the Plan, and may recognize a loss to the extent
that the total amount received is less than the amount previously included in
income. It is likely that any such loss may not be recognized until the time
that the total amount of the Allowed Claim that will be received by such
Creditor has been finally determined, which may not occur until all
distributions to Creditors have been made.

         The Plan provides for interest payments to certain Creditors, including
the Supplemental Interest Payments, if any, made to Creditors in Classes 3.3,
3.4 and 3.5. Any such interest will be ordinary income to them whether or not
they otherwise have a loss with respect to their Allowed Claim.

                 3.       TAX RULING

         Columbia, on behalf of the Columbia Group, will apply to the IRS for a
tax ruling that payments made by TCO which are attributable to the breach,
termination or rejection of gas purchase contracts are currently deductible.
There can be no

                                      IX-6


<PAGE>   807



assurance that the IRS will agree to rule on this issue, or if it does rule,
that it will rule favorably. Obtaining a favorable ruling from the IRS is a
condition to the effectiveness of the TCO Plan. See Section VII.A.4, "Risk
Factors Relating to Plan Implementation and Creditor Distributions; IRS Ruling
on Deductibility of Producer Payments."

                 4.       IMPORTANCE OF OBTAINING PROFESSIONAL TAX ASSISTANCE

         The foregoing is intended to be a summary only and not a substitute for
careful tax planning with a tax professional. The Federal, state and local
income and other tax consequences of the Plan are complex and, in some cases,
uncertain. Such consequences may also vary based on the particular circumstances
of each Creditor. Accordingly, each Creditor is strongly urged to consult with
its own tax advisor regarding the Federal, state and local income and other tax
consequences to it of the Plan.

         B.      ASSUMPTION OF TAX ALLOCATION AGREEMENT

         As discussed in Section IX.A.1.a, "Tax Consequences of the Plan; Tax
Consequences to TCO," supra, TCO, Columbia and the other members of the Columbia
Group file a consolidated Federal income tax return under sections 1501 and 1504
of the I.R.C. and, accordingly, each member of the Columbia Group is severally
liable for any tax payable with the consolidated return. In order to provide a
method for allocating the benefits and liabilities resulting from the filing of
a consolidated return, the Columbia Group has entered into the Tax Allocation
Agreement

                                      IX-7


<PAGE>   808



(the "TAA"). The TAA allocates the Columbia Group's aggregate Federal income tax
liability to each member of the group based on such member's tax liability
calculated on a separate return basis. Members of the group having tax losses
are paid by members with taxable income for the use of such losses. TCO believes
that this method of allocating the Columbia Group's consolidated Federal income
tax liability among the members of the group is equitable, well established
within the Columbia Group, and similar to the method used by other consolidated
companies.

         Furthermore, pursuant to Rule 45(c) promulgated by the SEC under the
HCA, a registered holding company which files a consolidated Federal income tax
return is required to secure the approval of the SEC for the allocation of the
liabilities and benefits of such return among the companies included therein
unless there is in effect a tax agreement approved by the SEC providing for the
allocation of the liabilities and benefits of such consolidated return. The TAA
provides for the allocation of the benefits and liabilities of the consolidated
return in a manner consistent with the requirements of Rule 45(c), and has been
approved by the SEC.

         The assumption by TCO (and Columbia) of the TAA (assuming such
assumption is approved by the Bankruptcy Court) will affect the allocation of
the liability for the Allowed portion of the IRS Claim. Under the Plan, TCO will
be required to bear (as a direct obligation) its allocable share of the income
tax

                                      IX-8


<PAGE>   809



deficiency resulting from the IRS Claim. By assuming the TAA, it is intended
that TCO's allocable share of such IRS liability will be determined under the
TAA. In addition, TCO will be required to pay, as an Assumed Executory Contract
Claim, the portion of the post-petition interest which is assessed against the
Columbia Group and is attributable to TCO's allocable share of the Allowed
portion of the IRS Claim. It will also be required to pay to Columbia and other
members of the Columbia Group, as an Assumed Executory Contract Claim, the
amount of refunds (plus interest thereon) which other members of the Columbia
Group would be entitled to receive but which were used to offset TCO's allocable
share of the IRS tax liability. If the Bankruptcy Court does not approve the
assumption of the TAA as an executory contract claim, it is intended that the
amounts described in this paragraph will nevertheless be paid by TCO as
Affiliate Tax Claims.

         On the other hand, the application of the TAA will enable TCO and TCO's
Creditors to benefit from the substantial anticipated tax deduction for payments
to Creditors under the Plan, particularly with respect to the Producer Contract
Rejection Claims. This tax deduction is expected to produce a substantial
reduction in tax and/or a tax refund to the Columbia Group and, under the TAA,
the amount of the refund (or an equivalent amount of reimbursement from other
members of the Columbia Group) will be paid to TCO. The amount of this
anticipated tax reduction/refund has been taken into account in

                                      IX-9


<PAGE>   810



valuing the TCO business for purposes of determining the level of distributions
that Columbia was willing to guarantee under the Plan, and thereby has increased
the amount of distributions that will be made to TCO's Creditors. In addition,
certain of the IRS adjustments giving rise to the Allowed portion of the IRS
Claim result in offsetting favorable adjustments in future years and, as a
result of the TAA, the benefit of these favorable adjustments has similarly been
taken into account in valuing the TCO business. Accordingly, both TCO and its
Creditors will derive significant benefits by the assumption (or enforcement) of
the TAA.

                                      IX-10
<PAGE>   811
X.       VOTING PROCEDURES AND CONFIRMATION REQUIREMENTS

         A.     CONFIRMATION HEARING

         The Bankruptcy Code requires the Bankruptcy Court, after notice, to
hold a hearing on whether the Plan and its proponents have fulfilled the
Confirmation requirements of section 1129 of the Bankruptcy Code. The
Confirmation hearing has been scheduled for _______________ at _____ a.m. before
the Honorable Helen S. Balick, United States Bankruptcy Court, 824 Market
Street, 6th Floor, Wilmington, Delaware 19801. The Confirmation hearing may be
adjourned from time to time by the Bankruptcy Court without further notice,
except for an announcement of the adjourned date made at the Confirmation
hearing. Any objection to Confirmation of the Plan must be made in writing and
must specify in detail the name and address of the objector, all grounds for the
objection, and the amount and proposed treatment of the Claim held by the
objector. Any such objections must be Filed and served upon the persons
designated in the notice of the Confirmation hearing, including TCO.

         B.     CONFIRMATION REQUIREMENTS

         In order to confirm the Plan, the Bankruptcy Code requires that the
Bankruptcy Court make a series of findings concerning the Plan and TCO's
compliance with the requirements of Chapter 11 including in relevant part that
(i) the Plan complies with the applicable provisions of the Bankruptcy Code;
(ii) the proponents of the Plan have complied with the relevant provisions of
the Bankruptcy Code; (iii) the proponents of the

                                      X-1

<PAGE>   812



Plan have proposed the Plan in good faith and not by any means forbidden by
law; (iv) any payments made or to be made for services or for costs and
expenses in connection with the case or the Plan have been approved by or are
subject to the approval of the Bankruptcy Court as reasonable; (v) the
proponent of the Plan has disclosed (a) the identity and affiliations of any
individual proposed to serve, after Confirmation, as a director or officer of
the debtor (and the appointment or continuance in such office of such
individual is consistent with the interests of creditors and equity security
holders and with public policy) and (b) the identity of any insider that will
be employed or retained by the reorganized debtor and the nature of any
compensation for such insider; (vi) any governmental regulatory commission with
jurisdiction, after confirmation of the Plan, over TCO's rates has approved any
rate change provided for in the Plan, or such rate change is expressly
conditioned on such approval; (vii) the Plan is in the "best interests" of all
of the holders of Claims or Interests in an impaired Class by providing to the
Creditors on account of such Claims or Interests, property of a value, as of
the Effective Date, that is not less than the amount that such holder would
receive or retain in a Chapter 7 liquidation, unless each holder of a Claim or
Interest in such Class has accepted the Plan; (viii) the Plan has been accepted
by the requisite majorities of holders of Claims or Interests in each impaired
Class of Claims or Interests or, if accepted by only one or more of such
Classes,
        
                                      X-2

<PAGE>   813



is "fair and equitable," and does not discriminate unfairly as to any
non-accepting Class, as required by the so-called "cramdown" provisions of
section 1129(b) of the Bankruptcy Code; (ix) the Plan is feasible and
Confirmation is not likely to be followed by the liquidation or the need for
further financial reorganization of TCO; (x) all fees and expenses payable under
28 U.S.C. Section 1930, as determined by the Bankruptcy Court at the hearing on
Confirmation of the Plan, have been paid or the Plan provides for the payment of
such fees on the Effective Date; and (xi) the Plan provides for the continuation
after the Effective Date of all retiree benefits, as defined in section 1114 of
the Bankruptcy Code, at the level established at any time prior to Confirmation
pursuant to sections 1114(e)(1)(B) or 1114(g) of the Bankruptcy Code, for the
duration of the period that TCO has obligated itself to provide such benefits.

                 1.      ACCEPTANCE

         Under the Bankruptcy Code, all impaired Classes of Claims and Interests
are entitled to vote to accept or reject the Plan. Pursuant to section 1126 of
the Bankruptcy Code, the Plan will be accepted by an impaired Class of Claims if
holders of two-thirds in dollar amount and a majority in number of Claims of
that Class vote to accept the Plan. Only the votes of those holders of Claims
who actually vote (and are entitled to vote) to accept or to reject the Plan
count in this tabulation. The Plan will be accepted by an impaired Class of
Interests if holders of two-thirds in dollar amount of shares in such Class

                                       X-3


<PAGE>   814



vote to accept the Plan. As with Claims, only those holders of Interests who
actually return a ballot count in this tabulation. Pursuant to section
1129(a)(8) of the Bankruptcy Code, all of the impaired Classes of Claims must
accept the Plan in order for the Plan to be confirmed on a consensual basis (and
at least one such impaired Class must accept the Plan without including
acceptance by an insider in that determination). However, under the cramdown
provisions of section 1129(b) of the Bankruptcy Code, only one impaired Class
(determined without including the acceptance by any insider) needs to accept the
Plan if the other conditions to cramdown are met. In accordance with the
Bankruptcy Code, affiliate votes will not be counted in determining whether a
particular Class is the sole accepting impaired Class under section 1129(a)(10),
although affiliate votes will be counted in determining whether a particular
Class accepts the Plan for all other purposes.

         The Plan provides for five (5) impaired Classes of Claims, all of which
are unsecured (except for Class 2.1, the Columbia Secured Claim), and which are
entitled to vote on the Plan. Class 5 Interests will not receive or retain any
property under the Plan. TCO's Creditors include Columbia and several
subsidiaries of Columbia, all of which are insiders of TCO. Columbia is the sole
member of Classes 2.1, 3.5 and 5. Thus, none of these Classes can be counted as
the accepting impaired Class required under section 1129 of the Bankruptcy Code.
Additionally, the following impaired Classes are expected to

                                       X-4


<PAGE>   815



include a number of Claimants that are insiders of TCO. Classes 3.2, 3.3, and
3.4 include a number of Claims held by affiliates.

                2.      BEST INTERESTS TEST

         Notwithstanding acceptance of the Plan by each impaired Class, section
1129(a)(7) of the Bankruptcy Code requires that the Bankruptcy Court determine
that the Plan is in the best interests of each holder of a Claim or Interest in
any such impaired Class that has voted against the Plan. Accordingly, if an
impaired Class under the Plan does not unanimously accept the Plan, the "best
interests" test requires that the Bankruptcy Court find that the Plan provides
to each member of such impaired Class a recovery on account of the member's
Claim or Interest that has a value, as of the Effective Date, at least equal to
the value of the distribution that each such member would receive if TCO were
then liquidated under Chapter 7 of the Bankruptcy Code.

         To estimate what members of each impaired Class of Claims or Interests
would receive if TCO were liquidated as part of a Chapter 7 case, the Bankruptcy
Court must analyze the achievable values and the nature and amount of
liabilities to be satisfied if the Reorganization Case is converted to a Chapter
7 case under the Bankruptcy Code and TCO's assets are liquidated by a Chapter 7
trustee (the "Liquidation Value"). See Section XI.F, "Liquidation Analysis/Best
Interests Test." TCO believes that its Plan meets the "best interests" test by
providing greater

                                       X-5


<PAGE>   816



value to impaired Classes of Creditors than they would receive in a Chapter 7
liquidation of TCO.

                 3.      FEASIBILITY 

         Section 1129(a)(11) of the Bankruptcy Code requires a finding that
Confirmation of the Plan is not likely to be followed by the liquidation, or the
need for further financial reorganization, of TCO or any successor to TCO
(unless such liquidation or reorganization is proposed in its Plan, which is not
the case for TCO). For purposes of determining whether its Plan meets this
requirement, TCO has prepared financial projections. TCO's financial
projections, and the material assumptions on which they are based, are set forth
in Section XI.C, "Financial Projections." Based upon its financial projections,
TCO believes that its reorganization under the Plan will meet the feasibility
requirements of the Bankruptcy Code.

                 4.      THE PLAN MUST COMPLY WITH THE APPLICABLE PROVISIONS
                         OF THE BANKRUPTCY CODE

         Section 1129(a)(1) of the Bankruptcy Code requires that the Plan comply
with the applicable provisions of the Bankruptcy Code. TCO believes that its
Plan complies with all applicable provisions of the Bankruptcy Code, including
all provisions of section 1129(a) not otherwise specifically discussed herein.

                         a.       CLASSIFICATION

         Section 1122 sets forth the requirements relating to classification of
claims. Section 1122(b) permits the designation of classes of unsecured claims
that are less than or reduced to an amount that the Court approves as reasonable
and

                                       X-6


<PAGE>   817



necessary for administrative convenience. The Plan contains classifications of
impaired Claims which TCO believes are reasonable, appropriate and fair. TCO's
Unsecured Creditors have been classified according to the following criteria:

         CLASS 3.1. Claims of $25,000 or less. This Class constitutes a
convenience Class as contemplated by section 1122(b) of the Bankruptcy Code. The
treatment provides for payment of one hundred percent in cash, of all Allowed
Unsecured Claims which do not exceed $25,000, except that, in the case of
holders of Customer Regulatory Claims, and as to their Regulatory Claims only,
only those holders who execute a Waiver Agreement prior to the Effective Date
may participate in this Class. TCO presently estimates that approximately 7,000
Claims(1) totalling approximately $8.0 million (net of setoffs) will be entitled
to participate in this Class on the Effective Date. This classification avoids
the administrative burden of requiring this Class to vote, pays thousands of the
smallest



(1)  Many of the proofs of Claim filed against TCO contain multiple Claims,
     entitled to treatment in different Classes under the Plan. See Section II.A
     of the Plan. As provided in the Plan, multiple claims Filed by a single
     Creditor, whether or not contained in a single proof of Claim, which are
     covered by a specific Class under the Plan are aggregated and treated as
     one Claim for purposes of the Plan. Multiple claims Filed by a single
     Creditor, whether or not contained in a single proof of Claim, which are
     covered by different Classes under the Plan are allocated to the
     appropriate Class and entitled to vote and receive distributions in those
     Classes. Thus, the number of Claims referred to throughout this Section
     varies from the actual number of proofs of Claim Filed against TCO.


                                       X-7


<PAGE>   818



Creditor Claims in full, and costs less than one quarter of 1% of the total
distribution to Creditors under the Plan. 

         CLASS 3.2. CUSTOMER AND GRI CLAIMS. This Class consists of the GRI
Claim and all outstanding Customer Regulatory Claims not included in Class 3.1,
which Claims are a legally distinct, identifiable set of Claims against TCO
arising from TCO's various Refund Obligations. The proposed treatment of this
Class reflects the Customer Settlement Proposal pending approval before FERC,
which embodies a proposed settlement of numerous litigated issues the outcome
of which is uncertain, and avoids the burden, delay, costs and risks of
litigation of those issues to judgment.
        
         TCO's Customers have asserted recoupment and set-off theories which if
successful, would result in the payment in full of TCO's Refund Obligations,
possibly with post-petition interest, notwithstanding TCO's Reorganization Case.
In addition, Customers have aggressively litigated TCO's Claims to transition
cost recoveries under Order No. 636, which constitute a substantial portion of
TCO's value as an ongoing concern. The proposed settlement, if approved by FERC,
provides for the resolution of all Claims by and against TCO as to Accepting 3.2
Claimants which are anticipated to constitute over 90% in amount of the total
Customer constituency.

         As previously described in Section IV.C.1, "The Omnibus FERC Motion,"
the Third Circuit's ruling on the Omnibus FERC Motion permitted the payment of
flow-through refund monies received by

                                       X-8


<PAGE>   819



TCO post-petition. However, flow-through refunds received pre-petition were
subject to a pro rata sharing of $3.3 million held to be trust monies under the
"lowest intermediate cash balance" ruling. Other pre-petition flow-through
Refund Claims not subject to the Third Circuit's ruling remain outstanding
after application of the trust monies, as well as other Claims for
non-flow-through refunds, and will be paid 80 cents on the dollar.

         In addition, TCO has settled and proposes to honor through the Plan a
modified version of the treatment set forth in the settlement of its 1990 Rate
Case. The Plan proposes payment of eighty (80%) percent of the pre-petition
amount and one hundred (100%) percent of the post-petition amount due to each
Claimholder under the 1990 Rate Case Settlement with interest as provided
therein.

         TCO has proposed in the Plan the settlement of those Claims of
Customers which are the subject of the BG&E Case. TCO proposes to pay $52.5
Million in full settlement of all Claims relating to the BG&E Case. The
settlement of these Claims ends a litigation which could be a substantial
distraction to TCO's management and continuing operations and, ultimately, could
result in substantially greater claims than what TCO has proposed in the
settlement of such BG&E Claims.

         Finally, the Class includes all other Customer Regulatory Claims which
are settled in accordance with the terms of the Customer Settlement Proposal.

                                       X-9


<PAGE>   820



         As part of the Settlement, Accepting 3.2 Claimants are required to
accept the treatment of their Claims proposed in the Customer Settlement
Proposal and in the Plan and to waive (i) all litigation rights relating to the
BG&E Case, (ii) opposition to TCO's recovery of transition costs as set forth in
the FERC Settlement Agreement including exit fees payable for terminated
upstream pipeline contracts, (iii) all litigation rights regarding such
Customer's recoupment rights and (iv) all litigation rights relating to the
Intercompany Claims, except for the Customer Committee's Motion to Unseal
Judicial Records.

         TCO believes the proposed settlements and the proposed treatment of the
Accepting 3.2 Claimants in this Class represent a fair compromise of the
parties' positions, require Accepting 3.2 Claimants to release significant
litigation Claims against TCO and Columbia, and confer an economic benefit on
TCO's Estate that might not be available absent the proposed settlement.
Dissenting 3.2 Claimants will have the opportunity to continue the litigation
over their Refund Disputes and TCO will pay to such Claimants what is required
by the resolution of such Refund Disputes which, unless otherwise provided by a
final Bankruptcy Court order, will receive the same percentage distribution as
Class 3.4 Claims. In addition, TCO will preserve its recovery rights for
transition costs as to those entities.

         CLASS 3.3 PRODUCER CLAIMS.

         This Class encompasses all Claims of Producers arising out of TCO's
rejection of natural gas purchase contracts and other

                                      X-10


<PAGE>   821



non-contract rejection Claims held by Producers which are not included in Class
3.1 or Class 1.2. Class 3.3 Claims are all disputed, unliquidated claims, which
are part of the ongoing Estimation process. In order to short circuit years of
potential litigation, TCO, in consultation with the Creditors' Committee, has
formulated proposals to settle all disputed Producer claims, and fund a
guaranteed level of payment to those Claimants.

         Certain members of this Class have negotiated an agreement in principle
regarding settlements of disputes over the allowable amounts of their Claims
with TCO prior to the filing of the Plan, and represent, by TCO's estimate, over
80% of the allowable Producer Claims. In addition, these Initial Accepting
Producers together with the Creditors' Committee, have agreed in principle on a
proposed payout for all Producer Claims which reflects a global compromise of
disputes with TCO and Columbia over (i) the enterprise value of the TCO estate,
(ii) the value of the Intercompany Claims, (iii) issues relating to Columbia's
retention of TCO, and (iv) other disputes arising during the case.

         If all holders of Producer Claims accept their Original Settlement
Values, Producers will receive 72.5% of their Allowed Claims in cash on the
Effective Date. Otherwise, Producers that accept the Settlement Values proposed
for their Claims, including the Initial Accepting Producers, will receive
68.875% of their Allowed Claims in cash on the Effective Date.

                                      X-11


<PAGE>   822



Producers that do not accept the Settlement Values proposed for their Claims
will receive 68.875% of their Allowed Claims in cash or, if their ultimate
Allowed Claims exceed TCO's proposed Settlement Values, in cash and securities
of Reorganized Columbia as and when such Claims become Allowed. Accepting
Producers will receive additional distributions unless the Claims of Rejecting
Producers are ultimately Allowed at levels significantly above those reflected
in TCO's proposed Settlement Values. Such additional distributions may result in
aggregate distributions which slightly exceed 72.5% of the Allowed Claims of
Producers if the ultimate Allowed Rejecting Producer Claims are less than TCO's
proposed Settlement Values for such Claims.

         CLASS 3.4 GENERAL UNSECURED CLAIMS

         Class 3.4 consists of approximately 1,000 General Unsecured Claims not
included in other classes of Unsecured Claims. Creditors in this Class will
receive payment under the Plan of 72.5% of their Allowed Claims on the Effective
Date or as and when such Claims become Allowed. Most Class 3.4 Claims are
currently liquidated and Allowed; only a few are currently disputed. For those
claims, TCO has proposed Allowance Amounts.

         This Class includes all Unsecured Claims not otherwise classified,
primarily Unsecured Claims arising from the sale of goods or the rendering of
services to TCO in the ordinary course of its business including, without
limitation, all Claims of upstream pipelines, other than a Claim arising from
exit fees

                                      X-12


<PAGE>   823



paid or to be paid to upstream pipelines pursuant to any agreement for the
termination of upstream pipeline service contracts. Claims in Class 3.4, in
addition to being substantially liquidated and undisputed, primarily relate to
normal course debts many of whose holders are engaged in ongoing business
relations and transactions with TCO.

         CLASS 3.5 COLUMBIA UNSECURED CLAIM 

         Class 3.5 consists of the Columbia Unsecured Claim. Reorganized
Columbia will receive cash in amount equal to the same final distribution
percentage of the Columbia Unsecured Claim as (a) the holders of Allowed Class
3.3 Claims receive on their Allowed Claims or (b) the holders of Allowed Class
3.4 Claims receive on their Allowed Claims, whichever is lower. Reorganized
Columbia may use all or a portion of the distribution that it will receive on
the Columbia Unsecured Claim to fund its obligations under the Columbia Omnibus
Settlement and Columbia Guaranty.

         TCO believes the classifications of Unsecured Claims set forth in its
Plan appropriately classify substantially similar Claims together and do not
discriminate unfairly in the treatment of those Classes. On the contrary, the
classifications are intended to enhance administrative convenience, and to
recognize unique settlements which are beneficial to the Estate. TCO believes
its classifications permit all Creditors to receive a prompt distribution of
their

                                      X-13


<PAGE>   824



fair share of the values available and treats similarly situated Creditors in a
similar manner under the Plan.

         Section 1122(a) provides that claims or interests may be placed in a
particular class only if they are substantially similar to the other claims or
interests in that class. TCO believes that all Classes under its Plan satisfy
the requirements of section 1122(a).

                   b. OTHER PLAN PROVISIONS

         Section 1123 specifies both mandatory and optional provisions that a
plan shall or may contain. In general, section 1123(a) mandates that a plan
shall designate classes of claims and interests (excluding administrative and
priority claims identified in section 507); specify any class of claims or
interests that is not impaired; specify the treatment of classes of claims or
interests that are impaired; provide the same treatment for each claim or
interest in a particular class, unless the holder thereof agrees to a less
favorable treatment; provide adequate means for the plan's implementation
including (as provided in the Plan) the retention by the debtor of all of the
property of the estate and the satisfaction or modification of liens; provide
for the inclusion in the debtor's charter of a provision prohibiting the
issuance of non-voting equity securities; and contain only provisions that are
consistent with the interests of creditors and equity security holders and with
public policy with respect to the manner of selection of any officer, director
or trustee under the Plan. TCO believes that

                                      X-14


<PAGE>   825



its Plan complies in all respects with the relevant requirements of section
1123(a).

         Section 1123(b) provides that a plan may impair or leave unimpaired any
class of claims or interests; provide for the assumption, rejection or
assignment of executory contracts or unexpired leases not previously rejected;
provide for the settlement or adjustment of any claims belonging to the debtor
or the estate; and include any other appropriate provision not inconsistent with
the applicable provisions of title 11.

         TCO's Plan avails itself of many of the optional provisions of section
1123(b), and does so, in TCO's opinion, in compliance with applicable standards
of law. With respect to all executory contracts and unexpired leases not
previously assumed or rejected and which have not terminated by their own terms
or by operation of law post-Petition Date, the Plan specifies the proposed
treatment to be accorded to those contracts. Notably, the Plan contains many
important provisions for the settlement or adjustment of Claims of the debtor
and the Estate, including settlements of Producer Claims, and the proposed
settlement with Customers of Refund Disputes and transition cost recoveries. TCO
believes that the proposed settlements comply with the applicable standards of
fairness and reasonableness, and are both beneficial and essential to the
reorganization of TCO. Consequently, TCO believes the Plan complies with all
applicable provisions of section 1123.

                                      X-15


<PAGE>   826



                 5.     TCO MUST COMPLY WITH THE APPLICABLE PROVISIONS OF THE
                        BANKRUPTCY CODE

         Section 1129(a)(2) of the Bankruptcy Code requires that TCO, as the
proponent of the Plan, comply with the applicable provisions of the Bankruptcy
Code. TCO believes that, as the proponent of the Plan, it has complied with, and
will continue to comply with, the applicable provisions of the Bankruptcy Code.

         Section 1125(b) of the Bankruptcy Code requires that acceptance or
rejection of a plan may not be solicited after the commencement of the case from
a holder of a claim or interestunless the plan or a summary of the plan and a
written disclosure statement approved, after notice and hearing, by the court as
containing adequate information is transmitted to such holder. The Court may
approve a disclosure statement without a valuation of the debtor or an appraisal
of the debtor's assets.

         TCO intends to solicit acceptances of its Plan only after the
Bankruptcy Court has approved the adequacy of information in this Disclosure
Statement, and will make appropriate motions to the Bankruptcy Court to
establish procedures for notice and hearing on the Disclosure Statement, and on
Confirmation of the Plan once the Disclosure Statement is approved.

         Section 1126 of the Bankruptcy Code and related Bankruptcy Rules govern
issues relating to voting on and acceptance or rejection of a plan. Section
1126(a) provides that "the holder of a claim or interest allowed under section
502 of this title may accept or reject a plan." As more fully discussed below,

                                      X-16


<PAGE>   827



many Claims Filed by Creditors against TCO are not as yet Allowed. Rather than
seek to disenfranchise those Creditors, TCO will File a motion which will
establish mechanics for allowing Disputed Claims for voting purposes under the
Plan. These mechanics include the proposal of Settlement Values for all Producer
Claims which convert Disputed Producer Claims into Allowed Claims for voting
purposes (as well as for all other purposes if the Settlement Values are
accepted by the holders of the Disputed Producer Claims and approved by the
Bankruptcy Court) and the proposal of Allowance Amounts for all Disputed General
Unsecured Claims which convert Disputed GeneralUnsecured Claims into Allowed
Claims for voting purposes (as well as for all other purposes if the Allowance
Amounts are accepted by the holders of the Disputed General Unsecured Claims and
approved by the Bankruptcy Court). Additionally, TCO intends to use the amounts
set forth in the schedules attached to the Customer Settlement Proposal as the
Allowed Claims for voting purposes for the holders of Customer Regulatory
Claims.

         Consequently, TCO believes sections 1125 and 1126 are or will be
complied with in connection with this Plan.

                                      X-17


<PAGE>   828



                 6.      ANY GOVERNMENTAL REGULATORY COMMISSION HAVING
                         JURISDICTION OVER TCO'S RATES MUST HAVE APPROVED
                         ANY RATE CHANGE

         Section 1129(a)(6) of the Bankruptcy Code requires that any rate change
provided in the Plan be approved by any governmental regulatory commission with
jurisdiction, after Confirmation of the Plan, over TCO's rates or such rate
change must be expressly conditioned on such approval. FERC has approved TCO's
Order No. 636 restructuring plan, which changes the methodology for calculating
TCO's rates to the SFV methodology. See Section III.C, "TCO's Implementation of
Order No. 636 Restructuring and Future Operations." The Customer Settlement
Proposal contemplates various rate changes, subject to FERC approval. FERC
approval of the Customer Settlement Proposal will constitute approval of the
requested rate changes. TCO also reserves the right to seek future rate changes
in the normal course of its business from the FERC, consistent with the
applicable provisions of the Customer Settlement Proposal.

                 7.      ALTERNATIVES TO THE PLAN
                         a. CRAMDOWN REQUIREMENTS

         The Bankruptcy Code provides a mechanism for obtaining Confirmation of
a plan even if it is not accepted by all impaired Classes, as long as at least
one impaired Class of Claims has accepted it (without counting the acceptances
of insiders). These so-called "cramdown" provisions are set forth in section
1129(b) of the Bankruptcy Code. A plan may be confirmed under the cramdown
provisions if, in addition to

                                      X-18


<PAGE>   829



satisfying the other requirements of section 1129 of the Bankruptcy Code, it (i)
is "fair and equitable" and (ii) "does not discriminate unfairly" with respect
to each Class of Claims or Interests that is impaired under, and has not
accepted, such Plan. TCO reserves the right to utilize cramdown to confirm the
Plan over the dissent of any Class of Unsecured Claims so long as one impaired
Class of Unsecured Claims accepts the Plan.

                   (i)      THE PLAN MUST BE FAIR AND EQUITABLE

         With respect to a dissenting class of secured claims, the "fair and
equitable" standard requires, among other things, that holders either (i) retain
their liens and receive deferred cash payments with a value as of the effective
date of the plan equal to the value of their interest in property of the estate
or (ii) otherwise receive the indubitable equivalent of their secured claims. No
Class of Secured Claims is impaired under the Plan except for Class 2.1, the
Columbia Secured Claim. However, Columbia has advised TCO that it will accept
the Plan.

         With respect to a dissenting class of unsecured creditors, the "fair
and equitable" standard requires, among other things, that the plan contain one
of two elements. The plan must provide either that each unsecured creditor in
the class receive or retain property having a value, as of the effective date of
the plan equal to the allowed amount of its claim, or that no holder of allowed
claims or interests in any junior class may receive or retain any property on
account of such claims or interests. The strict requirement as to the allocation
of full

                                      X-19


<PAGE>   830



value to dissenting classes before junior classes can receive a distribution is
known as the "absolute priority rule." TCO believes that its Plan meets the
requirements of the absolute priority rule, since each impaired Class of
Unsecured Claims must either accept its treatment (which, if different from
other Unsecured Classes, must be approved by the Bankruptcy Court as
appropriate), or it will be treated similarly with similarly situated Unsecured
Claims. TCO believes that, since all of TCO's equity is to be distributed to
Columbia on account of its Secured Claim in accordance with the Columbia Omnibus
Settlement, no Class junior to the Unsecured Claimants will receive any
distribution on account of its interests.

         In addition, the "fair and equitable" standard has also been
interpreted to prohibit any class senior to a dissenting class from receiving
under a plan more than 100% of its allowed claims. TCO believes that the Plan
complies with that requirement.

                (ii) THE PLAN MUST NOT DISCRIMINATE UNFAIRLY

         As a further condition to approving a cramdown, the Court must find
that the Plan does not "discriminate unfairly" in its treatment of dissenting
classes.

         If any impaired Class does not vote to accept the Plan, if at least one
impaired accepting Class votes to accept the Plan, TCO reserves the right to
utilize cramdown to confirm the Plan.

                                      X-20


<PAGE>   831



                         b.      LIQUIDATION

         See Section XI.F, "Liquidation Analysis/Best Interests Test."

         C.      VOTING PROCEDURES AND REQUIREMENTS

                 1.      VOTING REQUIREMENTS - GENERALLY

         Pursuant to the Bankruptcy Code, only Classes of Claims against or
Interests in TCO that are Allowed pursuant to section 502 of the Bankruptcy Code
and that are "impaired" under the terms and provisions of the Plan are entitled
to vote to accept or reject the Plan. If TCO or any other party-in-interest has
objected to a Claim or Interest, the holder of such Claim will not be entitled
to vote on the Plan unless the Bankruptcy Court has entered a Final Order
allowing such Claim or Interest or unless otherwise permitted to vote by the
Bankruptcy Court. In addition, any holder of a Claim that is listed on the
Schedule of Liabilities as contingent, disputed or unliquidated and has not
Filed a proof of Claim prior to the Bar Date will not be entitled to vote such
Claim with regard to the Plan.

         TCO or any other party in interest may seek an order of the Bankruptcy
Court temporarily allowing, for voting purposes only, certain Disputed Claims.
In fact, TCO intends to File a motion with the Bankruptcy Court for an order
establishing the Allowed amounts of Disputed Claims for voting purposes only:
        
         a. in the case of Producer Claims, in accordance with the Settlement
Values ascribed to such Claims or such other amounts as the Bankruptcy Court
shall determine;

                                      X-21


<PAGE>   832



         b. in the case of Customer Regulatory Claims, in accordance with
proposed settlement amounts set forth on the schedules to the Customer
Settlement Proposal or such other amounts as the Bankruptcy Court shall
determine; and

         c. in the case of General Unsecured Claims, in accordance with the
proposed Allowance Amounts ascribed to such Claims or such other amounts as the
Bankruptcy Court shall determine.

         Pursuant to the Bankruptcy Code, a Class is "impaired" if the legal,
equitable, or contractual rights attached to the Claims or Interests of that
Class are modified, other than by (i) curing defaults and reinstating maturity
or (ii) by payment in full in cash. Classes of Claims and Interests that are not
impaired are not entitled to vote on the Plan, are conclusively presumed to have
accepted the Plan and will not receive a ballot. Nevertheless, each (a) holder
of a Producer Claim for which TCO has proposed a Settlement Value of $25,000 or
less, (b) holder of a Disputed General Unsecured Claim for which TCO has
proposed an Allowance Amount of $25,000 or less, or (c) holder of a Customer
Regulatory Claim which is listed on the schedule to the Customer Settlement
Proposal in an amount which is $25,000 or less shall receive a [ballot] [form]
upon which itmay make certain elections as described below. The classification
of Claims and Interests under the Plan is summarized, together with notations as
to whether each Class or Interests is impaired or unimpaired, in Sections II and
VII of this Disclosure Statement.

                                      X-22


<PAGE>   833



         IF YOU HAVE A CLAIM THAT IS IMPAIRED UNDER THE PLAN ENTITLING YOU TO
VOTE AND YOU DID NOT RECEIVE A BALLOT, RECEIVED A DAMAGED BALLOT, OR LOST YOUR
BALLOT, PLEASE CALL [POORMAN - DOUGLAS AT _________________]. VOTING ON THE PLAN
BY A HOLDER OF ANY IMPAIRED CLAIM ENTITLED TO VOTE ON THE PLAN IS IMPORTANT.
IF YOU HOLD CLAIMS IN MORE THAN ONE CLASS, YOU MAY RECEIVE MORE THAN ONE
BALLOT. YOU SHOULD COMPLETE, SIGN AND RETURN EACH BALLOT YOU RECEIVE.

         In most cases, each ballot enclosed with this Disclosure Statement has
been encoded with the amount of your Claim for voting purposes. If your Claim is
or may become a Disputed Claim, this amount may not be the amount ultimately
Allowed for purposes of distribution. PLEASE FOLLOW THE DIRECTIONS CONTAINED ON
THE ENCLOSED BALLOT CAREFULLY.

         TO BE COUNTED, YOUR BALLOT MUST BE RECEIVED BY 5:00 P.M., PACIFIC
STANDARD TIME, ON _____________, 1995, AT THE ADDRESS SET FORTH ON THE ENCLOSED
PRE-ADDRESSED ENVELOPE. ALTERNATIVELY, CREDITORS MAY FAX THEIR BALLOTS TO TCO'S
BALLOT TABULATION CENTER C/O POORMAN-DOUGLAS CORPORATION AT
____________________, BUT SUCH FAX MUST BE RECEIVED BY 5:00 P.M., PACIFIC
STANDARD TIME, ON ____________, 1995. IT IS OFTHE UTMOST IMPORTANCE TO TCO THAT
YOU VOTE PROMPTLY TO ACCEPT THE PLAN.

         Votes cannot be transmitted orally. Accordingly, you are urged to
return your signed and completed ballot(s) promptly.

                                      X-23


<PAGE>   834



         Any ballot received that is not duly executed shall be an invalid
ballot and shall not be counted for purposes of determining acceptance or
rejection of the Plan. Any ballot received that does not indicate an acceptance
or rejection of the Plan will be counted as a vote to accept the Plan. A vote
may be disregarded if the Bankruptcy Court determines, after notice and a
hearing, that such acceptance or rejection was not solicited or procured in good
faith or in accordance with the provisions of the Bankruptcy Code or if a Claim
was voted in bad faith.

         2.     ELECTIONS BY CERTAIN CREDITORS

                a.     ELECTIONS BY HOLDERS OF PRODUCER CLAIMS

         EACH PRODUCER WITH AN UNSECURED CLAIM MAY INDICATE ACCEPTANCE OR
REJECTION OF THE SETTLEMENT VALUE PROPOSED FOR ITS CLAIM BY TCO AND (A) IF
ACCEPTED, WILL (I) SUBJECT TO THE APPROVAL OF THE BANKRUPTCY COURT, HAVE ITS
CLAIM ALLOWED IN THE AMOUNT OF SUCH SETTLEMENT VALUE AND (II) VOTE TO ACCEPT OR
REJECT THE PLAN OR (B) IF REJECTED, VOTE TO ACCEPT OR REJECT THE PLAN. EACH
HOLDER OF A PRODUCER CLAIM FOR WHICH TCO HAS PROPOSED A SETTLEMENT VALUE OF
$25,000 OR LESS WILL, IF IT REJECTS THE SETTLEMENT VALUE PROPOSED FOR ITS CLAIM
AND ITS CLAIM IS ALLOWED IN AN AMOUNT IN EXCESS OF $25,000, BE TREATED AS A
CLASS 3.3 CLAIM OR A CLASS 1.2 CLAIM.

                b.     ELECTIONS BY DISPUTED GENERAL UNSECURED CLAIMS

                EACH HOLDER OF A GENERAL UNSECURED CLAIM WHICH IS NOT AN ALLOWED
CLAIM AS OF THE PLAN MAILING DATE MAY INDICATE

                                      X-24


<PAGE>   835



ACCEPTANCE OR REJECTION OF THE ALLOWANCE AMOUNT PROPOSED FOR ITS CLAIM BY TCO
AND (A) IF ACCEPTED WILL (I) SUBJECT TO THE APPROVAL OF THE BANKRUPTCY COURT,
HAVE ITS CLAIM ALLOWED IN THE AMOUNT OF SUCH ALLOWANCE AMOUNT AND (II) VOTE TO
ACCEPT OR REJECT THE PLAN OR (B) IF REJECTED, VOTE TO ACCEPT OR REJECT THE PLAN.
EACH HOLDER OF A DISPUTED GENERAL UNSECURED CLAIM FOR WHICH TCO PROPOSED AN
ALLOWANCE AMOUNT OF $25,000 OR LESS, WILL, IF IT REJECTS THE ALLOWANCE AMOUNT
PROPOSED FOR ITS CLAIM AND ITS CLAIM IS ALLOWED IN EXCESS OF $25,000, BE TREATED
AS A CLASS 3.4 CLAIM.

                 c.      ELECTIONS BY HOLDERS OF CUSTOMER REGULATORY CLAIMS
                         AND GRI CLAIM

         If a holder of a Customer Regulatory Claim and/or GRI Claim (i) votes
to accept its treatment under the Plan, in case of holders of Customer
Regulatory Claims which the Customer Settlement Proposal provides will be
Allowed in amounts in excess of $25,000, (ii) timely executes a Waiver
Agreement, and (iii) Class 3.2 votes to accept the Plan, such Claimants will be
deemed to waive and release all of their rights and Claims (a) to appeal from or
to otherwise seek modification of the Trust Fund Decision or otherwise seek more
favorable treatment in their favor regarding the Omnibus FERC Motion, (b) to
seek the refunds which are the subject of the BG&E Case, (c) in respect of TCO's
various pre-petition Refund Obligations, other than asprovided in the Plan, (d)
to setoff or recoupment in respect of such Customer's Regulatory Claims, (e) to
compel assumption, rejection or enforcement of their pre-petition service

                                      X-25


<PAGE>   836



contracts, except as otherwise provided under the Plan, (f) to seek the refunds
which are the subject of the 1990 Rate Case, (g) to seek recovery from or to
enforce against Columbia any of the foregoing (collectively, the "Refund
Claims") except pursuant to the Columbia Customer Guaranty and (h) against
Columbia and CNR with respect to the Intercompany Claims. In addition, such
Customers agree not to oppose TCO's recovery of payments for Claims in respect
of recoverable gas costs, and for appropriate exit fees payable for terminated
upstream pipeline contracts, in accordance with the Customer Settlement
Proposal.

         If, however, a holder of a Class 3.2 Claim votes to reject the Plan, it
may nevertheless elect to receive the treatment provided to Accepting Class 3.2
Claimants under the Plan, if Class 3.2 accepts the Plan, by executing a Waiver
Agreement prior to the Effective Date.

         If the holder of a Customer Regulatory Claim fails to execute the
Waiver Agreement contained in the ballot, it nonetheless must return its ballot
within the time prescribed by the Bankruptcy Court in order for its vote to be
counted. For treatment of Dissenting 3.2 Claimants who do not elect Class 3.2
treatment, see Section VII.A.2.c.(viii), "Class 3.2 Unsecured Customer Refund
Claims and GRI Claims". Any holder of a Customer Regulatory Claim that is listed
in the schedules attached to the Customer Settlement Proposal as having a claim
of $25,000 or less that does not execute the Waiver Agreement

                                      X-26


<PAGE>   837



prior to the Effective Date shall be treated as a Dissenting Class 3.2 Claimant
for such Claim.

                                      X-27
<PAGE>   838
XI.      FINANCIAL PROJECTIONS, PRO FORMA FINANCIAL STATEMENTS, AND LIQUIDATION
         ANALYSIS

         A.      FINANCIAL ANALYSIS OF PLAN

         As a condition to confirmation of a plan of reorganization, the
Bantkruptcy Code requires, among other things, determinations by the bankruptcy
court that (i) confirmation is not likely to be followed by the liquidation or
need for further reorganization of the debtor, (ii) dissenting creditors under
the plan of reorganization will receive more than they would receive in a
hypothetical Chapter 7 liquidation of the debtor, and (iii) in the event of a
cram-down, no senior class is receiving more than the full amount of its allowed
claim, and no class junior to an impaired unsecured class receives any value. In
determining whether the Plan satisfies these confirmation requirements, the
management of TCO analyzed the ability of Reorganized TCO to meet its
obligations under the Plan and conduct its business with sufficient liquidity
and capital resources, and TCO's hypothetical value in a Chapter 7.

         In addition, in arriving at the determination of values available to
satisfy Creditor Claims, the management of Columbia and TCO and their
professional advisors have analyzed the value of TCO as a going concern,
including the settlement value of the Intercompany Claims Litigation.

         To aid in this analysis, the managements of TCO and Columbia have
requested Salomon Brothers Inc. ("Salomon") to perform valuation analyses of the
possible reorganization values of TCO. These valuations have been updated
periodically

                                      XI-1
<PAGE>   839



throughout this Case, taking into account revised actual and projected financial
information and business plans for TCO, as well as changes in the marketplace
for comparable utilities and other relevant criteria.

         Salomon has derived a range of values for TCO employing customary
investment banking valuation methodologies for a going concern, including
analysis of the public market value of comparable publicly traded companies and
analysis of the discounted value of TCO's projected future cash flows. Salomon
has also reviewed certain historical private market transactions (i.e., third
party sales) involving the acquisition of all or part of comparable natural gas
pipeline companies.

         The financial analyses performed by Salomon were based, to a very large
extent, on the Projections (as defined below) prepared by TCO's management.
Salomon assumed that such Projections were reasonably prepared on a basis
reflecting the best currently available estimates and judgments of TCO's
management as to the future financial performance of Reorganized TCO and all
other relevant matters. Salomon did not independently verify such Projections.
While the management of TCO believes that the assumptions underlying the
Projections, when considered on an overall basis, are reasonable in light of
current circumstances, no assurance can be, or is being given that the
Projections will be realized.

         In performing its valuation analyses, Salomon considered, among other
things, the Projections, the nature and condition of

                                      XI-2


<PAGE>   840



TCO's properties, the nature of TCO's business and its regulatory rate
environment following its restructuring pursuant to Order No. 636 (see Section
III.C, "TCO's Implementation of Order No. 636 Restructuring and Future
Operations"), possible tax benefits to TCO related to the assumed deductibility
of payments under the Plan to TCO's Creditors for terminated gas purchase
contract obligations and certain other obligations assumed to give rise to
income tax deductions, the recoverability of certain contingent regulatory
receivables which are now the subject of the proposed Customer Settlement, TCO's
historical and current financial position and results of operations
generally(1), general current economic and market conditions, including those
affecting the interstate natural gas pipeline industry particularly, and its
experience with similar transactions and in securities valuation generally.

         TCO did not impose any limitations upon the scope of, or the procedures
undertaken in, the investigation made by Salomon, nor did TCO impose any limits
on the factors considered by Salomon in rendering its services. In performing
its valuation analyses, Salomon did not make or obtain independent appraisals

                                     
- ----------
(1)  As a result of the implementation of Order No. 636 (as described in section
     III.C) and the restructuring of the types of services provided by TCO
     (including the substantial elimination of TCO's merchant operations and of
     its high cost gas purchase obligations) and the rates charged to its
     customers, historical data prior to November 1, 1993 on TCO's costs,
     revenues and operations were deemed not particularly relevant to the
     valuation of TCO post- implementation of Order No. 636.


                                      XI-3


<PAGE>   841



of TCO's assets. TCO cooperated fully with Salomon in connection with its
engagement.

         Salomon was not authorized to, and did not, solicit third parties which
might be interested in acquiring TCO or its assets. Salomon did, however, assist
TCO in the establishment of the Data Room (as directed by this Court), which
provided relevant confidential financial and other business data relating to TCO
to interested potential third-party bidders for TCO. See Section V.D.6. of this
Disclosure Statement for further discussion of the data room proceedings. None
of the data-room entrants has submitted to Columbia or TCO any proposal for
acquiring the latter or its assets. In 1994, Columbia received an unsolicited
recapitalization and reorganization proposal from Dimeling, Schreiber & Park
("DS&P"), a Philadelphia-based investment firm. The proposal included a group of
unnamed investors seeking to obtain minority control of Columbia through the
purchase of Columbia's common stock. DS&P also proposed the sale of all of
Columbia's distribution assets to Utilicorp United Inc., an electric and natural
gas utility company, at a bargain price approximately equal to their book
values. Columbia found the DS&P proposal unacceptable. Salomon has reviewed the
few expressions of interest received from third parties and has consulted with
the Debtors as to the viability and seriousness of such expressions of interest.

         In addition, counsel to Columbia conducted legal analyses of potential
outcomes of the Intercompany Claims Litigation, and

                                      XI-4


<PAGE>   842



Salomon created financial models utilized by counsel and management in arriving
at a range of potential outcomes giving rise to a settlement value which is
embedded in the amounts distributable to TCO's Creditors and which supplements
the core business value of the Estate.

         Based on all of the foregoing and other factors which it deemed
relevant to its analyses, including TCO's projected cash balances as of the
Effective Date, Salomon has advised TCO that the $3.9 billion projected to be
paid to TCO Creditors under the Amended Plan, which includes incremental values
provided by Columbia through the Omnibus Settlement, exceeds the fair market
value of TCO as a going concern.

         B.      RECAPITALIZATION POST-EMERGENCE/FEASIBILITY

         Pursuant to the Columbia Omnibus Settlement, Columbia has agreed to
accept in respect of its Secured Claim, restructured debt and equity securities
of TCO resulting in a debt/equity ratio which TCO believes represents a
reasonable debt structure which will provide a viable capital structure for the
business going forward. TCO's Projections assume that on the Effective Date,
Reorganized TCO will have total debt of approximately $1.5 billion, which will
consist of secured notes to Columbia, with a range of maturities up to thirty
years.

         In light of the Projections and Financial Plan Assumptions (as defined
herein) set forth below, and the assumed settlement and satisfaction of
pre-Petition Date liabilities as contemplated in the Plan, TCO believes its
post-reorganization

                                      XI-5


<PAGE>   843



operations will be viable and profitable, and that it will be able to meet all
operational obligations and debt service in the normal course of its business,
without the need for a further reorganization.

         C.      FINANCIAL PROJECTIONS

         In connection with the development of the Plan, financial projections
(the "Projections") were prepared by TCO to portray its anticipated
post-reorganization performance. The Projections should be read in conjunction
with the assumptions, qualifications, and explanations set forth herein, and the
historical consolidated financial statements and related notes thereto contained
in Columbia's (1994) Annual Report on Form 10-K attached hereto as Exhibit 5.

         TCO does not customarily publish its business plans and strategies or
make external projections or forecasts of its anticipated financial position or
results of operations. Accordingly, TCO (including Reorganized TCO) does not
anticipate that it will, and disclaims any obligation to, furnish updated
business plans or projections to holders of Claims prior to the Effective Date,
except as may be necessary to meet legal requirements for Confirmation of the
Plan, or to creditors after the Effective Date, or to include such information
in documents required to be filed with the SEC or otherwise make such
information public.

         The Projections assume that all pre-petition Claims will be treated in
accordance with the provisions of the Plan, and that

                                      XI-6


<PAGE>   844



the Plan will be implemented in accordance with its terms. For purposes of the
Projections, the Effective Date of the Plan is assumed to be December 31, 1995.
The Projections are based upon estimates and specific assumptions as to key
variables for each year during the projection period which TCO believes provide
a reasonable basis for presenting the projected effects of the Plan. These
assumptions are described in the following section titled "Assumptions Used in
the Financial Projections." Among other things, the Projections assume that FERC
will set rates at a level adequate to allow TCO the opportunity to recover its
costs and a reasonable return on its rate base. Further, the Projections make
assumptions about the quantity of throughput, the level of operating expenses
that TCO considers reasonable and the recoverability and timing of certain tax
benefits that should be available to TCO post-reorganization as a result of the
assumed deductibility of various payments to TCO's Creditors under the Plan.

         The estimates and assumptions underlying the Projections are inherently
uncertain and, though considered reasonable by TCO at this time, are subject,
among other things, to significant regulatory, general economic and competitive
uncertainties and contingencies beyond the control of TCO and its management,
and to operating conditions which are subject to change. In addition, the
uncertainties which are inherent in the Projections increase for later years in
the projection period, due to the increased difficulty associated with

                                      XI-7


<PAGE>   845



forecasting levels of economic activity and corporate performance at more
distant points in the future. Consequently, the projected information included
herein should not be regarded as a representation by TCO, its advisors or any
other person that the projected results will be achieved.

         Furthermore, there will usually be differences between projected and
actual results because events and circumstances frequently do not occur as
expected, and those differences may be material. TCO's independent public
accountants have not performed any procedures with respect to the Projections
and assume no responsibility for them. The Projections were substantially
completed and reviewed by TCO's management prior to the filing of this Plan. THE
INFORMATION CONTAINED IN THESE PROJECTIONS IS SUBJECT TO ONGOING REVIEW AND
ADJUSTMENT WHICH MAY BE MATERIAL. UPDATED PROJECTIONS WILL BE PROVIDED IF
NECESSARY AND APPROPRIATE PRIOR TO THE HEARING ON THIS DISCLOSURE STATEMENT.

         TCO creditors entitled to vote on the plan must make their own
determinations as to the reasonableness of such assumptions and the reliability
of the projections in reaching their determinations of whether to accept or
reject the plan.

         The Projections should be read together with the information contained
in Columbia's current SEC filings, including excerpts pertinent to the Plan from
Columbia's (1994) Annual Report on Form 10-K and a Quarterly Report on Form 10-Q

                                      XI-8


<PAGE>   846



for the first quarter of 1995, copies of which are annexed hereto as Exhibits 5
and 6.

         TCO's projected earnings for the five-year period ended December 31,
1999, and its projected cash flow information for the same period are summarized
below. Additional detail is set forth in the Pro Forma Financials annexed hereto
as Exhibit 4.

                                      XI-9


<PAGE>   847


<TABLE>
<CAPTION>

                                                  Projected Financial Information
                                                      Year Ended December 31
                                                        Dollars in Millions            
                                           ---------------------------------------------                                   

                                           1995(A)      1996     1997     1998     1999
                                           -------      ----     ----     ----     ----
<S>                                       <C>         <C>      <C>      <C>      <C>
Throughput MMDth                           1065.8      1052.3   1060.8   1092.4   1123.5
EBITDA(A)                                   367.3       297.3    311.0    339.2    368.8
EBIT(A)                                     283.5       206.4    214.5    235.1    256.6
Net Income(A)                                66.3        62.9     78.2     95.1    102.9

Return on Rate Base
Average Rate Base                          1577.4      1633.5   1718.2   1863.7   1998.9

Return on Rate Base                          N.A.        11.9     12.0     12.4     12.7

Return on Capitalization
Average Capitalization                       N.A.      1932.7   1769.4   1823.2   1945.5

Return on capitalization %                    N.A.        10.7     12.1     12.9     13.2


</TABLE>

- -----------------------------
(A) 1995 results include a number of extraordinary items relating to the
    emergence from bankruptcy.
    

<TABLE>
<CAPTION>
                                                  Projected Cash Flow Information
                                                      Year Ended December 31
                                                        Dollars in Millions            
                                           --------------------------------------------
                                           1995         1996     1997     1998     1999
                                           ----         ----     ----     ----     ----
<S>                                       <C>          <C>      <C>      <C>      <C>
Cash from Operations                       308.2*       498.7    320.0    224.3    214.4

Capital Investment
  Activities                              (175.4)     (106.7)   (244.5)  (242.5)  (242.7)

</TABLE>

- ----------------------------
*   Excludes cash disbursed to satisfy pre-petition liabilities and
    customer obligations pursuant to the Plan on the Effective Date.

         Assumptions Used in the Financial Projections

         TCO regularly presents detailed historical financial information
through numerous filings with the FERC, as well as

                                      XI-10


<PAGE>   848



through consolidated and consolidating financial materials filed by Columbia
with the SEC pursuant to federal securities laws and the HCA regulations.

         In addition, certain non-public financial detail about TCO's current
and projected operations has been made available on a confidential basis to
Professionals for the Creditors' Committee and Customers' Committee. In
particular, the financial advisors to the Creditors' Committee, Lehman Brothers
and Ernst & Young, have had extensive access over the course of TCO's
Reorganization Case to TCO's books and records, have received extensive
information and have conducted pervasive due diligence evaluations on a wide
range of issues relating to TCO's financial condition and value as a business.

         The primary estimates and assumptions used in preparing the Projections
are as follows:

         i)      Throughput

                 In preparing its market projections, TCO has made assumptions
         about throughput levels that it considers reasonable. Under the
         Straight Fixed Variable ("SFV") rate design implemented under Order No.
         636, TCO's projected revenue stream is heavily weighted to demand, or
         fixed billings (more than 90%) and thus is not subject to significant
         variations normally generated by commodity, or volumetric types of
         revenues. Thus, TCO believes that

                                      XI-11


<PAGE>   849



         variations of actual throughput driven by weather, general business
         conditions of TCO's Customers, competition or other events are not
         likely to materially affect TCO's level of revenues. The SFV rate
         design provisions of Order No. 636 have been protested on an
         industrywide basis by various consumer interests and, notwithstanding
         the Customer Settlement, remain as an issue on appeal for all pipelines
         subject to FERC jurisdiction. Future changes to TCO's revenue stream as
         a result of action from the appeal would be implemented on a
         prospective basis only. Alternative rate designs could cause weather
         and volume throughput to impact TCO's actual financial results to a
         greater extent than contemplated in the Projections.

         ii)     Successful implementation of Order No. 636

                 The Projections assume a level of performance in the Order No.
         636 environment that is contingent upon FERC's continued approval of
         TCO's current rate structure and operational structure, and TCO's
         implementation of its Order No. 636 business plan. The Customer
         Settlement Proposal, if implemented, resolves most but not all issues
         relating to the implementation and future operations of Order No. 636.

         iii)    Environmental liabilities.

                 TCO currently estimates that the environmental assessment and
         remediation program may take ten to twelve years to complete and cost
         approximately $20 million per

                                      XI-12


<PAGE>   850



         year. As part of this program, TCO and its environmental consultant are
         currently pursuing an ongoing study of future environmental
         characterization and remediation activities. Ongoing discussions with
         the E.P.A. regarding administration of the EPA Settlement impact the
         study, including the nature, timing and estimated amounts of the
         characterization and remediation programs. See Section V.C.9, "Other
         Significant Claims and Related Litigation; Environmental Issues." TCO's
         estimates of these characterization and remediation costs and the time
         period for completing that work are expected to be revised from time to
         time as additional information becomes available. In this regard, an
         updated report from TCO's environmental consultant is expected to be
         provided in mid-1995.

                 TCO's 1995 projected earnings reflect the assumption of an
         additional $50 million non-cash charge for this issue. The actual
         expense recognized will vary from that assumption depending upon the
         contents of the aforementioned report and other circumstances
         prevailing at the time the expense is recognized. TCO also projects
         that it will recover a substantial portion of these costs through
         recoveries under existing insurance policies and through the collection
         of costs through rates from Customers although such recoveries cannot
         be assured. TCO's accounting model currently recognizes expense as soon
         as it is probable and reasonably estimated but does not

                                      XI-13


<PAGE>   851



         recognize offsetting collections and/or reimbursements until received.
         Actual cash expenditures and collection of costs, as well as timing may
         vary from the projections.

         iv)     Cost of capital financing

                 Based on the assumed post-reorganization capital structure
         described above, TCO's cost of debt (based on current interest rate
         levels) will be approximately 8.5% per annum and TCO assumes an
         appropriate rate of return on equity for its projected rate-making
         purposes. These capital costs and TCO's capital structure are designed
         to approximate Columbia's costs and capital structure.

         v)      Regulatory Lag

                 All rate regulated entities, including TCO, must manage the
         variations between actual cost and those costs reflected in the rates
         approved by their regulatory agency. TCO believes the variations for
         this issue will be manageable, and, if significant, a filing of a rate
         case is one option to maintain stability in TCO's earnings projections,
         as are cost reductions. Those Projections include periodic rate cases
         as necessary to recover increased cost of service levels driven
         primarily by general inflation factors. Such rate increases may not be
         necessary if the anticipated cost increases do not materialize.

                                      XI-14


<PAGE>   852



         vi)     Upstream Pipeline Order No. 94 Costs

                 Consistent with FERC orders issued in early 1994, the
         assumptions herein include voiding previously negotiated Order No. 94
         settlements with TCO's upstream pipelines discussed in Section IV.C.4,
         "Other Significant Claims and Related Litigation; Order No. 94 Issues."
         Thus, contrary to these previously negotiated settlements, the
         Projections reflect pipelines refunding all principal amounts collected
         of approximately $30 million plus interest from February, 1994 until
         the projected date the refunds are paid. The pipelines have sought and
         received stays from the FERC on refunding these sums pending further
         Court review. This issue will continue to be litigated at the FERC and
         the Courts notwithstanding the Customer Settlement, and the ultimate
         outcome may differ materially from the projection.

         vii)    Customer Settlement

                  As discussed in Section IV.C., TCO has reached a comprehensive
         settlement with many of its customers and other interested parties
         resolving a large number of outstanding refund and cost recovery issues
         between TCO and its customers. The financial projections herein assume
         the economics, refunds and collections, provided for in the Customer
         Settlement Proposal and that all Customers will participate in the
         settlement by voting favorably on the Plan. The reserves for refunds
         recorded on the financial

                                      XI-15


<PAGE>   853



         statements as of March 31, 1995 are adequate to reflect the expected
         refunds under the Customer Settlement Proposal.

         viii)   Majorsville/Heard Storage Facilities

                 On March 21, 1995, the Bankruptcy Court approved TCO's
         agreements relating to Claims of Braunsol Resources, Inc. ("Braunsol")
         with Braunsol's owners which resolve the Claims asserted, whereby TCO
         will temporarily deactivate certain storage operations so as to permit
         underground coal mining activities which should not significantly
         impact TCO's storage capacity. TCO's financial plan reflects
         implementation of this agreement at no net cost to TCO or TCO's
         Customers or financial detriment to TCO resolving years of disputes
         over ownership rights. The agreement is expected to result in a payment
         to TCO from the coal company sufficient to offset TCO's costs
         associated with constructing facilities to offset the temporary loss of
         storage capacity and other expenses resulting from the suspension of
         operations in the Majorsville/Heard Storage Facility.

         ix)     Market Expansion

                 As noted in Section IV.D. TCO has undertaken a market expansion
         project which is reflected in these financial projections in the form
         of increased capital spending and additional revenues during 1997, 1998
         and 1999. The financial projections assume the traditional regulatory
         returns on investment.

                                      XI-16


<PAGE>   854



         x)      Federal Income Taxes

                 The financial projections assume a cash payment to Columbia by
         TCO for approximately $164 million on the Effective Date for all of
         TCO's combined obligations under the IRS Settlement and for the
         assumption of the TAA as described in Section V. Columbia acts as an
         agent by collecting income tax payments from all of its subsidiaries
         and passing the payments on to the IRS.

         D.      CAPITAL STRUCTURE AND OTHER ISSUES

         Upon emergence from bankruptcy, Reorganized TCO's capital structure is
expected to be approximately 69% debt and 31% equity. This includes debt related
to certain tax and regulatory receivables that are expected to be monetized over
a period of years. As these receivables are monetized, cash will be used to
retire debt. TCO's debt to equity ratio is projected to improve to approximately
60%/40% by 1997. Thereafter, TCO's Projections indicate that this ratio can be
maintained or improved over the long-term.

         TCO's post-bankruptcy Financial Plan includes a capital expenditure
program of $175.8 million in 1995, $112.7 million in 1996, $243.8 million in
1997 and $240 million in 1998 and 1999. A large portion of expenditures in 1997
through 1999 represent the cost of TCO's proposed market expansion project as
more fully described in Section IV.D.

         Various elements of expense, excluding environmental accruals, are
inflated at specific rates, which when weighted,

                                      XI-17


<PAGE>   855



result in overall inflation rates of 3% in 1995; 3% in 1996; 4% in 1997; 3% in
1998, and 3% in 1999.

         E.      PRO FORMA FINANCIAL STATEMENTS

         Projected Financial Statements for each year are also annexed hereto in
Exhibit 4.

         F.      LIQUIDATION ANALYSIS/BEST INTERESTS TEST

         Should any Creditors voting in an impaired Class reject the Plan, the
Bankruptcy Court must determine whether the Plan is in the best interests of
Creditors. This analysis compares the amounts that each impaired Class of
Creditors would receive if TCO were liquidated in a hypothetical proceeding
under Chapter 7 of the Bankruptcy Code occurring in the event of the failure of
the proposed plan of reorganization, with the amounts each impaired Class will
receive or retain under the Plan. The Plan must provide value to dissenting
impaired Creditors which is greater than or equal to the value which would be
distributed in a Chapter 7 liquidation in order to meet the "best interests of
creditors" test set forth in section 1129(a)(7) of the Bankruptcy Code.

         TCO believes that the amounts each impaired Class will receive or
retain under the Plan exceed the amounts such Class would receive in a
liquidation of TCO because, as discussed in greater detail below, through the
mechanism of the Columbia Omnibus Settlement, the Customer Settlement Proposal
and the agreements with the Initial Accepting Producers, the benefits of which
are only available to Creditors through this proposed

                                      XI-18


<PAGE>   856



Plan, Creditors are receiving guaranteed levels of payout substantially in cash
and the assurance of timely settlement of litigation over Intercompany Claims
and Producer Claim amounts, the continuation of which would certainly delay and
likely dilute the values available under the Plan.

         In addition, (i) it is possible that a liquidation sale of TCO would
not realize the full going concern value of TCO's assets; (ii) there would be
additional administrative expenses involved in the appointment of a liquidating
trustee, as well as attorneys, financial advisors, accountants and other
professionals to assist such trustee; (iii) there could be substantial Claims of
Federal and state environmental agencies that would have to share in
distributions in a liquidation; (iv) there would be additional expenses and
substantial tax liabilities, some of which would be entitled to priority in
payments, which would arise by reason of the liquidation; and (v) there would be
a substantial delay before Creditors would receive any distribution. Even if the
full going concern value of TCO were to be realized, the net proceeds, for the
reasons stated, would likely be less than amounts distributable under the Plan
due to reserves a buyer would require, the obligation to pay Columbia secured
debt, and the possibility of some portion of the purchase price being paid other
than in cash.

         Set forth below is a discussion of the factors considered by TCO in
arriving at its conclusion that the Plan meets the "best interests of creditors"
test.

                                      XI-19


<PAGE>   857



         i)      Estimated Liquidation Proceeds

         In the hypothetical liquidation of TCO, a Bankruptcy Court-appointed
Chapter 7 trustee would liquidate the assets of TCO's Estate to create a fund
(the "Liquidation Fund") from which to pay TCO's Creditors. The Liquidation Fund
would consist essentially of the aggregate proceeds from the sale of all of
TCO's operations plus the cash on hand.

         A liquidation of TCO conceivably could be structured as separate,
piecemeal sales of the assets of TCO during which the business operations of TCO
would either continue on a very limited basis or cease altogether (a "Split-Up
Sale"), or as a single sale of essentially all of the assets of TCO as a going
concern (a "Going-Concern Sale"). However, no precedent exists with regard to a
Split-Up Sale of an operating interstate pipeline and there can be no assurance
that such a sale could be consummated. TCO believes that, given its status as an
interstate pipeline subject to the NGA and its regulatory certificates of public
necessity and convenience which both permit and require TCO to operate in the
public interest, it is extremely unlikely that FERC would permit TCO simply to
cease operations and liquidate all of its assets in a piecemeal fashion. Thus,
TCO believes that the nature of TCO's business provides an insurmountable
barrier to a Split-Up Sale.

         TCO has considered whether there are discrete aspects of its business
operations, such as branch pipelines which are not essential to the core
business, excess storage capacity, or

                                      XI-20


<PAGE>   858
  


excess gathering facilities, which would be worth more to a third party than as
part of TCO's ongoing business, and has determined that it is unlikely that a
sale of one or more discrete aspects of its business operations in addition to
the Going-Concern Sale of the remaining operations would result in an increase
by any material amount over the amount that would be obtained from a single
Going-Concern Sale of all its business operations.

         Thus, TCO believes that a Going-Concern Sale would offer the best
realization of values for TCO's Estate in a Chapter 7 liquidation context.

         In the case of a Going-Concern Sale, the Liquidation Fund would consist
of the proceeds of the sale of TCO's entire operations, as a going-concern, plus
cash on hand net of the expenses of the sale (the "Going-Concern Sale Value").

         There is a reasonable probability that the limited authority a Chapter
7 trustee would have to operate TCO, the expeditious liquidation that would be
required, the limited number of qualified buyers that might be interested in
acquiring TCO and the "forced sale" atmosphere that might prevail in a
liquidation would negatively impact the amount of the proceeds of such sale.
Even if the full Going Concern Sale Value of TCO were realized, the new proceeds
available to Creditors would be less because of the additional liquidation
costs.

         TCO considered whether the nature of TCO's business afforded any
prospective purchaser an opportunity to realize

                                      XI-21


<PAGE>   859



greater returns than TCO does in operating its business; however, TCO believes
that any potential Going-Concern Sale must be analyzed in light of the
inherently limited returns available to a purchaser of a rate regulated company
such as TCO. As a FERC-regulated company whose rates remain subject to
traditional cost-of-service utility strictures, TCO's revenues (and therefore
its value) will be limited by FERC to an amount based on TCO's costs, including
a reasonable return on its rate base. The value of TCO is limited by this
restriction on revenues whether TCO is owned by Columbia or sold in a
Going-Concern Sale. Thus, TCO believes that there is no reason to assume that
the rates to be set after a liquidation sale would be higher than those set
forth in the Projections.

         On the other hand, under the Plan, Reorganized TCO will remain liable
for substantially all pre- and post-petition environmental clean-up obligations
owed to state and Federal governmental units, and TCO assumes certain rate
recovery levels for remediation costs. In the event of a Going-Concern Sale, TCO
believes that the price a purchaser would pay for TCO, or for any discrete
aspect of the pipeline, would be discounted due to environmental liabilities
assumed or imposed by law on that purchaser, and due to the uncertainty as to
the prospects for rate recovery of costs relating to those liabilities. In
addition, not only would the specter of environmental liabilities have a
significant negative impact on value, significant claims related to such
liabilities could materially

                                      XI-22


<PAGE>   860



increase the Claims to be settled by the Chapter 7 trustee, as discussed below.

         ii)     Deductions from Liquidation Fund

         The hypothetical liquidation of TCO would result in significant
additional costs that would not otherwise be incurred under TCO's Plan. The most
significant readily quantifiable effect of a Going-Concern Sale by TCO's Chapter
7 trustee would be the taxes incurred on the gain on the sale of TCO's assets.
Even after considering the implications of TCO's overall tax position, the
liquidation of TCO has significant adverse effects that diminish the value
available to Creditors.

         Any Liquidation Fund would be reduced further by the costs of the
liquidation. The costs of liquidation under Chapter 7 would likely include the
fees of a trustee, as well as those of counsel and other professionals that
might be retained by the trustee to assist in the liquidation, and selling
expenses (including costs of advertising, auctioneer's fees, brokerage
commissions or investment banker fees) incurred in connection with the
liquidation.

         iii)    Creation of Additional Claims

         Under the Plan, employee, environmental and other obligations are
assumed or otherwise satisfied by Reorganized TCO without those Claims sharing
in Plan distributions to Creditors. Significant additional Claims could be filed
against TCO in a Chapter 7 proceeding for the liquidation of TCO. For example, a
sale of TCO's business could trigger the filing of

                                      XI-23


<PAGE>   861



substantial Claims by governmental environmental agencies that have not to date
Filed Claims against TCO, since those agencies would wish to protect their
interests in the Liquidation Fund in addition to looking to the purchaser for
remediation. Further, a liquidation sale of TCO could trigger or accelerate
significant obligations to employees under pension and other employee benefit
plans, in addition to Claims for severance pay and retiree medical benefits.
Under the Plan, all ongoing employee benefit costs are assumed by Reorganized
TCO and are not deducted from distributions to Creditors under the Plan.

         Similarly, the Plan contemplates the assumption and/or continuation as
modified under Order No. 636 of TCO's service contracts with its Customers, as
well as the assumption of many of TCO's existing upstream pipeline
transportation contracts. Breach or rejection of any of these agreements in a
Chapter 7 liquidation could result in the filing of significant Claims,
totalling hundreds of millions of dollars, against the TCO Estate. In addition,
TCO has hundreds of real property lease agreements which it has assumed in this
Chapter 11 case. Termination of any of those leases or breach of related
agreements could result in Administrative Claims being asserted where presently
there is no Claim against the Estate. In addition, the Plan contemplates the
assumption and cure of contracts with affiliates which, in a liquidation sale,
could be terminated, potentially resulting in further Claims against the
Liquidation Fund which do not presently exist.

                                      XI-24


<PAGE>   862



         Finally, the TCO Plan contemplates the assumption by Reorganized TCO of
liabilities relating to pre- and post-petition condemnation awards, surety bonds
and certain indemnity obligations, which liabilities could result in additional
Claims against the Liquidation Fund.

         TCO cannot precisely quantify the impact on the Liquidation Fund of
these additional Claims, but they could certainly exist and would likely be
substantial.

         iv)     Timing of the liquidation process

         The Bankruptcy Code requires a Chapter 7 trustee to collect and convert
the property of the debtor's estate to cash and close the debtor's estate as
expeditiously as is compatible with the best interests of the parties in
interest. TCO believes that any liquidation, whether in a Split-Up Sale or
Going-Concern Sale, would probably require at least one year from commencement
to completion, and might require substantially longer. The liquidation process
would be delayed by the need to prepare information materials with which to
offer the assets to potential purchasers, by purchasers' requests for additional
information, by the time needed to evaluate offers and by the time needed to
negotiate a sale or sales. Once a tentative agreement is reached, further delay
would be necessary to obtain regulatory approvals, including the approval of
FERC and the Federal Trade Commission or the Antitrust Division of the
Department of Justice. In addition, TCO believes that a liquidation could result
in time-consuming litigation with

                                     XI-25


<PAGE>   863



environmental and tax authorities seeking to protect their interests.

         As a result of all of the foregoing factors, any payment out of a
Liquidation Fund to Creditors with impaired Claims would probably be delayed for
at least a year after the date such Creditors would receive payment under the
Plan, and could be delayed much longer. This delay further limits the value to
Creditors of a liquidation as compared with the Plan.

         v)      Distributions; absolute priority

         It is likely that if TCO were liquidated, the Bankruptcy Court would
apply the priority scheme set forth in Chapter 7. Under this scheme, secured
claims are first satisfied from the collateral securing such claims before any
such proceeds are distributed to holders of junior claims. Unless invalidated by
adjudications of the Intercompany Claims adverse to Columbia, Columbia's Secured
Claim would be required to be satisfied in full out of the Liquidation Fund
prior to any distribution to Unsecured Creditors. Moreover, if any Intercompany
Claims judgment was still on appeal, the full amount of Columbia's Secured Claim
would have to be reserved in the Liquidation Fund pending a final adjudication.
In addition, payments would be made on a strict priority basis to all other
Secured Claims, Administrative Claims, Miscellaneous Administrative Claims,
Priority Tax Claims and all other Claims granted priority status over Unsecured
Claims under the Bankruptcy Code. In addition, certain of the Claims that would
result from a liquidation, such

                                      XI-26


<PAGE>   864



as Claims for severance pay and other employee benefits and for trustee fees and
expenses, would have priority over the Claims of Unsecured Creditors.

         Under the Plan, in contrast to the absolute priority scheme in Chapter
7 liquidation, all Creditors are guaranteed a minimum level of payout on their
Claims, with the potential for some increase over the minimum as to Classes 3.3
and 3.4. TCO believes that all Unsecured Creditors will not only receive greater
distributions than they would receive under a Chapter 7 liquidation, but the
certainty of those amounts is guaranteed, and they will receive such
distributions much earlier.

         Furthermore, in a Chapter 7 liquidation, the Chapter 7 trustee would
have to determine whether to continue the Intercompany Claims litigation or seek
a settlement which might or might not result in the same value being provided to
Creditors pursuant to the Plan as part of the Columbia Omnibus Settlement.
Columbia has indicated that it would continue to vigorously litigate the
Intercompany Claims litigation should TCO convert to a Chapter 7 proceeding.

         TCO believes that, after consideration of all of the foregoing factors,
Creditors with impaired Claims will receive distributions under the Plan which
have greater value as of the Effective Date than such Creditors would receive
from distributions in a Chapter 7 liquidation and that the Bankruptcy Court will
so find. The Plan offers significant additional values to Creditors over and
above the values achievable through

                                      XI-27


<PAGE>   865



liquidation by virtue of the Columbia Omnibus Settlement, which provides for the
settlement of the Intercompany Claims litigation, the assumption of
environmental and other business liabilities by Reorganized TCO, the
restructuring of TCO's secured debt, and the monetization on the Effective Date
of the distributable values under the Plan, the Customer Settlement Proposal and
the settlement of substantial Producer Claims.

                                      XI-28

<PAGE>   866



XII. CONCLUSION

     For all of the reasons contained in this Disclosure Statement, the Debtor
believes that confirmation and consummation of the TCO Plan is preferable to
any other reasonable alternative. Consequently, TCO urges all of holders of
Claims entitled to vote to accept the TCO Plan by completing and returning
their ballots in accordance with the procedures approved by the Bankruptcy
Court.
        
Dated:  Charleston, West Virginia
        April 17, 1995

                                COLUMBIA GAS TRANSMISSION
                                CORPORATION

                                By: /s/ James P. Holland
                                --------------------------------
                                    James P. Holland
                                    Chairman and Chief Executive
                                    Officer

        

                                   XII-1




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