COLUMBIA ENERGY GROUP
U5S, 1998-04-30
NATURAL GAS TRANSMISISON & DISTRIBUTION
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<PAGE>   1
================================================================================



                       SECURITIES AND EXCHANGE COMMISSION

                                Washington, D.C.


                                    FORM U5S


                                  ANNUAL REPORT

                      For the Year Ended December 31, 1997



                              Filed pursuant to the
                   Public Utility Holding Company Act of 1935



                              COLUMBIA ENERGY GROUP
                      (Name of registered holding company)

                      12355 Sunrise Valley Drive, Suite 300
                           Reston, Virginia 20191-3420


================================================================================
<PAGE>   2
================================================================================


                       SECURITIES AND EXCHANGE COMMISSION

                                Washington, D.C.




                                    FORM U5S




                                  ANNUAL REPORT

                      For the Year Ended December 31, 1997




                              Filed pursuant to the
                   Public Utility Holding Company Act of 1935




                              COLUMBIA ENERGY GROUP
                      (Name of registered holding company)

                      12355 Sunrise Valley Drive, Suite 300
                           Reston, Virginia 20191-3420


================================================================================
<PAGE>   3
                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                                       PAGE NO.
                                                                                                            OR
ITEM                                                                                                    EXHIBIT
- ----                                                                                                    -------
<S>                                                                                                 <C>
  1   System Companies and Investment Therein as of December 31, 1997............................        3-6
                                                                                                     
  2   Acquisitions or Sales of Utility Assets ...................................................         7
                                                                                                     
  3   Issue, Sale, Pledge, Guarantee or Assumption of System Securities .........................         7
                                                                                                     
  4   Acquisition, Redemption or Retirement of System Securities ................................        8-10
                                                                                                     
  5   Investments in Securities of Nonsystem Companies ..........................................        10
                                                                                                     
  6   Officers and Directors ....................................................................       11-44
                                                                                                     
  7   Contributions and Public Relations ........................................................        45
                                                                                                     
  8   Service, Sales and Construction Contracts .................................................       46-49
                                                                                                     
  9   Wholesale Generators and Foreign Utility Companies ........................................        49
                                                                                                     
 10   Financial Statements and Exhibits .........................................................        50
                                                                                                     
      Consolidating Financial Statements ........................................................   50 (F1 to F6)
                                                                                                     
      Signature of Registrant's Officer .........................................................        52
                                                                                                  
      Exhibits:                                                                                          53

        Securities and Exchange Act of 1934 Reports .............................................         A

        Index to Corporate Organization & By-Laws Exhibits ......................................         B

        Indentures or Contracts .................................................................         C

        Tax Allocation Agreement for 1997 .......................................................         D

        Other Documents Prescribed by Rule or Order .............................................         E
                                                                                                        
        Report of Independent Public Accountants ................................................         F
                                                                                                  
        Financial Data Tables ...................................................................         G

        Organizational Chart of Exempt Wholesale Generators or Foreign Utility Holding
        Companies................................................................................         H

        Audited Financial Statements and Analytical Reviews and Conclusions Regarding
        Exempt Wholesale Generators or Foreign Utility Holding Companies ........................         I
</TABLE>


2
<PAGE>   4
ITEM 1.  SYSTEM COMPANIES AND INVESTMENT THEREIN AS OF DECEMBER 31, 1997

<TABLE>
<CAPTION>
                                                                                                        Issuer           Owner
                                                                                          % Of           Book             Book
                                                                    Number of Common     Voting         Value            Value
         Name of Company (Company Abbreviation)                       Shares Owned        Power         ($000)           ($000)
         --------------------------------------                     ----------------     ------        -------           -------
<S>                                                                 <C>                  <C>           <C>               <C>   
Columbia Energy Group  (Registrant, CG)
   Columbia Gas of Kentucky, Inc. (CKY) .......................        952,248           100.0          66,661            66,661
      Unsecured Debt ..........................................              -               -          54,494            54,494
   Columbia Gas of Maryland, Inc. (CMD) .......................          2,883           100.0          22,400            22,400
      Unsecured Debt ..........................................              -               -          17,819            17,819
   Columbia Gas of Ohio, Inc. (COH)............................      4,769,585           100.0         422,486           422,486
      Unsecured Debt ..........................................              -               -         319,959           319,959
   Columbia Gas of Pennsylvania, Inc. (CPA) ...................      3,405,112           100.0         216,115           216,115
      Unsecured Debt...........................................              -               -         148,451           148,451
   Columbia Gas of Virginia, Inc.  (COS) ......................      1,306,106           100.0         141,795           142,078
      Unsecured Debt...........................................              -               -         116,677           116,677
   Columbia Gas Transmission Corporation (TCO) ................          1,934           100.0         977,067           977,067
      Unsecured Debt...........................................              -               -           1,913             1,913
      Secured Debt.............................................              -               -         643,000           643,000
   Columbia Gulf Transmission Company (CGT) ...................          1,993           100.0         103,854           103,854
      Unsecured Debt...........................................              -               -          68,414            68,414
      Unconsolidated Affiliates:
         Trailblazer Pipeline Company (a)......................              -            33.3          24,705            24,705
   Columbia Atlantic Trading Corporation (CAT) ................            308           100.0             629               629
   Columbia Energy Group Service Corporation (CS) .............          3,000           100.0          13,186            13,186
      Unsecured Debt ..........................................              -               -          16,043            16,043
   Columbia LNG Corporation (CLG) .............................          3,519            92.1          19,752            23,501
      CLNG Corporation (CLNG) .................................            155           100.0             249               249
      Unconsolidated Affiliate:
        Cove Point LNG Limited Partnership (b) ................              -            50.0          13,611            13,611
   Columbia Natural Resources, Inc. (CNR)......................      5,379,029           100.0         225,387           225,387
      Unsecured Debt ..........................................              -               -         114,850           114,850
      Subsidiary:
         Alamco, Inc. (c)......................................      4,876,170           100.0          54,143            54,143
      Subsidiaries:
         Alamco-Delaware, Inc. (d).............................              -           100.0           6,151             6,151    
         Hawg-Hauling and Disposal, Inc. (e)...................        100,000           100.0             815               815  
   Columbia Propane Corporation (CPC)  (f).....................          1,377           100.0          23,962            24,466
      Unsecured Debt...........................................              -               -          19,388            19,388
</TABLE>


3
<PAGE>   5
ITEM 1.  Continued

<TABLE>
<CAPTION>
                                                                                                          Issuer           Owner
                                                                                          % Of            Book             Book
                                                                    Number of Common     Voting           Value            Value
         Name of Company (Company Abbreviation)                        Shares Owned       Power           ($000)           ($000)
         --------------------------------------                     ----------------     ------           ------           ------
<S>                                                                 <C>                  <C>              <C>              <C>  
Unconsolidated Affiliate:
       Atlantic Energy, Inc. (AEI) (g).........................           3,500            50.0            1,745            1,745
Columbia Networks Services Corporation (CNS)...................             600               -            4,358            4,358
     CNS Microwave, Inc. (CMC).................................              50           100.0              370              370
     Unconsolidated Affiliate:
       EnergyNet, L.L.C. (h)...................................               -              50              959              959
Columbia Insurance Corporation, Ltd. (CIC).....................           4,800           100.0            1,506            1,506
Columbia Energy Services Corporation (CES) ....................         419,657           100.0           33,603           33,603
  Subsidiaries:
     Columbia Energy Marketing Corporation (CEM)...............             101           100.0            1,702            1,702
     Columbia Energy Power Marketing Corporation (CEPM) (i)....               1           100.0               66               66
     Columbia Service Partners, Inc. (CSP).....................             200           100.0              558              558
 TriStar Capital Corporation (TCC) ............................           3,000           100.0            1,518            1,518
   Subsidiary:
     TriStar Gas Technologies, Inc. (TGT)......................          40,000           100.0            1,450            1,450
      Unconsolidated Affiliate:
        Enertek Partners, LP (j) ..............................               -            16.5            1,201            1,201
 Columbia Electric Corporation (TVC)...........................           1,835           100.0           46,139           46,139
   Subsidiaries:
     TriStar Pedrick General Corporation (PGC).................           3,000           100.0            3,004            3,004
     Unconsolidated Affiliate:
         Pedricktown Cogeneration Limited
          Partnership (k)......................................               -            15.0            3,826            3,826
     TriStar Pedrick Limited Corporation (PLC).................              42           100.0            7,175            7,175
     Unconsolidated Affiliate:
         Pedricktown Cogeneration Limited
          Partnership (k)......................................               -            35.0            8,928            8,928
   *TriStar Fuel Cells Corporation (FC)........................           3,000           100.0                -                -
     TriStar Binghamton General Corporation (BGC)..............             118           100.0            1,344            1,344
       Unconsolidated Affiliate:
         Binghamton Cogeneration Limited
        Partnership (l)........................................               -            10.0              380              380
     TriStar Binghamton Limited Corporation (BLC)..............             142           100.0            3,247            3,247
       Unconsolidated Affiliate:
         Binghamton Cogeneration Limited
</TABLE>


4
<PAGE>   6
ITEM 1.  Continued

<TABLE>
<CAPTION>
                                                                                                          Issuer           Owner
                                                                                          % Of            Book             Book
                                                                    Number of Common     Voting           Value            Value
      Name of Company (Company Abbreviation)                           Shares Owned       Power           ($000)           ($000)
      --------------------------------------                        ----------------     ------           ------           ------ 
<S>                                                                 <C>                  <C>              <C>              <C>
        Partnership (l)........................................               -            23.3             884               884
*   TriStar Georgetown General Corporation (GGC)...............             401           100.0               -                 -
     Unconsolidated Affiliate:
 *  Georgetown Cogeneration Limited
        Partnership...........................................                -             1.0               -                 -
*   TriStar Georgetown Limited Corporation (GLC)..............            3,000           100.0               -                 -
     Unconsolidated Affiliate:
*   Georgetown Cogeneration Limited
        Partnership  .........................................                -            49.0               -                 -
   TriStar Vineland General Corporation (VGC).................            2,704           100.0             512               512
     Unconsolidated Affiliate:
       Vineland Cogeneration Limited Partnership (m)..........                -             5.0             412               412
   TriStar Vineland Limited Corporation (VLC).................            2,385           100.0           4,232             4,232
     Unconsolidated Affiliate:
       Vineland Cogeneration Limited Partnership (m)..........                -            45.0           3,705             3,705
   TriStar Rumford Limited Corporation (RL)...................                1           100.0           3,144             3,144
    Unconsolidated Affiliate:
         Rumford Cogeneration Company (n).....................                -            10.2           7,070             7,070
*   TriStar Nine Corporation (TVC9)...........................                1           100.0               -                 -
*   TriStar Ten Corporation (TVC10)...........................                1           100.0               -                 -
      Unconsolidated Affiliate:
     Cogeneration Partners of America (o) ....................                -            50.0               -                 -
</TABLE>

* Inactive companies.

(a)      Partnership interest in the Trailblazer Pipeline Company. Partners each
         owning a thirty-three and one- third percent (33-1/3%).

(b)      As of January 27, 1994, Columbia LNG Corporation ("CLG"), together with
         its wholly-owned subsidiary, CLNG Corporation ("CLNG"), entered into an
         Amended and Restated Agreement of Limited Partnership (the "L.P.
         Agreement") to form Cove Point LNG Limited Partnership (the
         "Partnership"), with Cove Point Energy Company, Inc. ("COPE") and PEPCO
         Energy Company, Inc. ("PENCO"). Under the L.P. Agreement, CLNG and COPE
         are each general partners of the Partnership. Each of the general
         partners has a one (1%) percent ownership interest and fifty (50%)
         percent of the Partnership's voting power. CLG and PENCO each are
         limited partners of the Partnership, holding respectively, forty-nine
         (49%) percent ownership interests in the Partnership. The limited
         partners have no voting power (except in certain extraordinary
         situations).

(c)      On August 7, 1997, CNR acquired Alamco, a gas and oil production
         company that operates in the Appalachian Basin for $101 million. Alamco
         was incorporated in the state of Delaware.

(d)      Alamco-Delaware, Inc. was incorporated in Delaware on July 21, 1994. 
         Alamco-Delaware manage and invest the capital of Alamco not needed for 
         other corporate activities.


(e)      Hawg Hauling and Disposal, Inc. was incorporated in West Virginia on 
         March 17, 1993. Hawg Hauling and Disposal, Inc. is a commercial brine 
         hauling and disposal service company. The company accepts brine, which 
         is produced naturally with gas and oil, from wells operated by CNR as 
         well as from other operators.  

5
<PAGE>   7
(f)      In October 1997, CPI was merged into CPC.

(g)      Atlantic Energy, Inc. is an unconsolidated subsidiary of Columbia
         Propane Corp., accounted for as an investment using the equity method.
         Columbia Propane Corp. and Conoco, Inc. each have a fifty percent (50%)
         ownership interest in the propane storage facility.

(h)      EnergyNet, L.L.C. was organized in the state of Delaware on June 30,
         1997. EnergyNet was established primarily to develop and market a
         centralized energy data exchange service that will enable customers
         involved in the transportation and distribution of natural gas to
         conduct business transactions through one central access point via the
         internet or private network. In June 1997, CNS contributed $1,000,000
         to the partnership for 50% ownership.

(i)      Columbia Power Marketing Corporation (CPM) was incorporated in the
         state of Delaware on December 15, 1997. Effective March 2, 1998, the
         name was changed to Columbia Energy Power Marketing Corporation (CEPM).
         CEPM holds a FERC license to sell electricity.

(j)      Partnership interest in Enertek L.P. (EnerTek). EnerTek is a gas
         industry fund that invests in companies developing new technologies to
         enhance the supply, transportation and utilization of natural gas. The
         limited partners and their ownership interest include Battelle Memorial
         Institute (8.26%); Brooklyn Union Gas Company (16.32%), CNG
         Technologies, Inc. (16.54%); Enron Venture Capital Company (16.54%);
         Equitable Resources, Inc. (8.26%); Southern California Gas Company
         (16.54%); and TriStar Gas Technologies, Inc. (16.54%). Scientific
         Advances, Inc. is the general partner owning (1.00%)

(k)      Partnership interest in Pedricktown Cogeneration Limited Partnership.
         The general partners are Pedrick General, Inc. and TriStar Pedrick
         General Corporation, each of which owns one-half of the thirty percent
         (30%) general partnership interest. The limited partners are Pedrick
         Limited, Inc. and TriStar Pedrick Limited Corporation, each of which
         owns one-half of the seventy percent (70%) limited partnership
         interest. Pedrick General, Inc. and Pedrick Limited, Inc. are
         subsidiaries of Atlantic Generation, Inc.

(l)      Partnership interest in Binghamton Cogeneration Limited Partnership.
         The general partners are Binghamton General, Inc.; S.N.W. Binghamton I,
         L.P.; and TriStar Binghamton General Corporation, each of which owns
         one-third of the thirty percent (30%) general partnership interest. The
         limited partners are Binghamton Limited, Inc.; S.N.W. Binghamton II,
         L.P.; and TriStar Binghamton Limited Corporation, each of which owns
         one-third of the seventy percent (70%) limited partnership interest.
         Binghamton General, Inc. and Binghamton Limited, Inc. are subsidiaries
         of Atlantic Generation, Inc. and S.N.W. Binghamton I, L.P. and S.N.W.
         Binghamton II, L.P. are subsidiaries of Stone & Webster Development
         Corp.

(m)      Partnership interest in Vineland Cogeneration Limited Partnership. The
         general partners are Vineland General, Inc. and TriStar Vineland
         General Corporation, each of which owns one-half of the ten percent
         (10%) general partnership interest. The limited partners are Vineland
         Limited, Inc. and TriStar Vineland Limited Corporation, each of which
         owns one-half of the ninety percent (90%) limited partnership interest.
         Vineland General, Inc. and Vineland Limited, Inc. are subsidiaries of
         Atlantic Generation, Inc.

(n)      Partnership interest in Rumford Cogeneration Company. The limited
         partners and the percent of ownership interest of each include: TriStar
         Rumford Limited Corporation (10.2%), UtilCo Group, Inc. (10.2%),
         Nichimen America, Inc. (10.2%), Dominion Energy, Inc. (10.2%), Rumford
         Power Associates, Inc. (14.1%) and Catamount Rumford Corp. (15.1%).
         Rumford Cogeneration, Inc. is the general partner owning 30.0%.

(o)      Partnership interest in Cogeneration Partners of America. Columbia
         Electric Corporation and Atlantic Generation, Inc. each own 50%.
         Cogeneration Partners of America ceased operations in May 1994. The
         activities formerly performed by Cogeneration Partners of America are
         being performed by Columbia Electric Corporation and Atlantic
         Generation, Inc.


6
<PAGE>   8
ITEM 2.      ACQUISITIONS OR SALES OF UTILITY ASSETS


     None.


ITEM 3.      ISSUE, SALE, PLEDGE, GUARANTEE OR ASSUMPTION OF SYSTEM SECURITIES


     None.


7
<PAGE>   9
ITEM 4.  ACQUISITION, REDEMPTION OR RETIREMENT OF SYSTEM SECURITIES DURING 1997


                        CONFIDENTIAL TREATMENT REQUESTED


8
<PAGE>   10
                        CONFIDENTIAL TREATMENT REQUESTED


9
<PAGE>   11
ITEM 5.   INVESTMENTS IN SECURITIES OF NONSYSTEM COMPANIES


                        CONFIDENTIAL TREATMENT REQUESTED


10
<PAGE>   12
ITEM 6.  OFFICERS AND DIRECTORS

Part I.   Names, principal business address and positions held as of December
          31, 1997.

          The names, principal address and positions held as of December 31,
          1997 of the officers and directors of System companies is presented in
          the tables on pages 13 through 30. The principal business address of
          each officer and director is indicated in such tables by the numbers
          (1) through (34). The addresses associated with these number
          designations are shown in the following address key. The symbols used
          to indicate the positions held by officers and directors are shown in
          the position symbol key below.


Ref.#    Address

1        12355 Sunrise Valley Drive, Suite 300,  Reston, Virginia  20191-3420
2        200 Civic Center Drive, Columbus, Ohio 43215
3        205 Van Buren, #120, Herndon, Virginia 20170
4        77 Beachside Avenue, Green Farms, Connecticut 06436
5        2077 Jupiter Hills Lane, Henderson, Nevada 89012
6        10 Harleston Green, Hilton Head, South Carolina 29928
7        62 Sherwood Drive, New Providence, New Jersey 07974
8        One Seagate, Suite 1400, Toledo, Ohio  43653
9        1700 MacCorkle Avenue, S.E., Charleston, West Virginia 23236
10       1801-L Sara Drive, Chesapeake, Virginia  23320
11       3147 Keywest Court, Wichita, Kansas 67204
12       700 13th St., N.W., Suite 900, Washington, DC 20005
13       2603 Augusta, Houston, Texas 77057-5637
14       Dial Tower, Phoenix, Arizona 85077-1921
15       1600 Dublin Road, Columbus, Ohio 43215
16       1455 Pennsylvania Avenue, Washington, DC  20004
17       9200 Arboretum Parkway, Richmond, Virginia  23235
18       P.O. Box 6070, Charleston, West Virginia 25362
19       2100 Cove Point Road, Lusby, Maryland 20687
20       14 Brookside Rd., Biltmore Forest, Asheveille, North Carolina 28803
21       No. 4 Bottomley Crescent, New Albany, Ohio  43054
22       509 Preston Avenue, Blacksburg, Virginia 24061-0200
23       12801 Fair Lakes Parkway, Fairfax, Virginia  22030
24       2001 Mercer Road, Lexington, Kentucky 40511
25       9001 Arboretum Parkway, Richmond, Virginia  23235
26       650 Washington Road, Pittsburgh, Pennsylvania  15228-2703
27       505 King Avenue, Columbus, Ohio 43201
28       121 Hillpointe Drive, #100, Canonsburg, Pennsylvania  15317
29       P.O. Box 2187, Houston , Texas  77252
30       120 Arrandale Boulevard, Exton, Pennsylvania  19341-2512
31       1330 Post Oak Blvd., 20th Floor, Houston, Texas  77056
32       5501 Frantz Road, Dublin, Ohio 43017
33       12 Ridge Road, Bronxville, New York  10708
34       910 Newton Road, Charleston, West Virginia 25314


11
<PAGE>   13
POSITION KEY CODE

<TABLE>
<S>                                       <C>                                  <C>
KEY   CB  -  Chairman of the Board        CAO - Chief Accounting Officer       VP - Vice President

      D   -  Director                     CLO  -  Chief Legal Officer          T - Treasurer

      CEO -  Chief Executive Officer      P   -  President                     S - Secretary

      COO -  Chief Operating Officer      EVP  -  Executive Vice President     C - Controller

      CFO - Chief Financial Officer       SVP  -  Senior Vice President        GA - General Auditor

                                                                               GC - General Counsel
</TABLE>

FOOTNOTE KEY

(a)      The officers and directors of the subsidiary of CLG listed in Item 1
         are identical to the officers and directors of CLG.

(b)      The officers and directors of each of the thirteen subsidiaries of TVC
         listed in Item 1 are identical to the officers of TVC. The directors of
         each of the thirteen subsidiaries of TVC are James Alexander, Michael
         Gluckman and Raymond Kaskel.

(c)      The officers and directors of the subsidiary of TCC listed in Item 1
         are identical to the officers and directors of TCC.

(d)      The officers of EnergyNet L.L.C., a 50% owned affiliate of CNS, are
         Steven Kretsch - President, Edward Harvey - Treasurer and Mark Cleaves
         - Secretary.

(e)      The officers and directors of Alamco-Delaware, Inc., a subsidiary of
         Alamco are: 
         William H. Harmon - President, Chief Executive Officer and Director
         Mark A. Chandler - Treasurer and Director
         Frederick G. Kolb - Vice President
         James W. Trost - Vice President
         Willard Watson, Jr. - Vice President
         R. Neal Pierce, Jr. - Secretary
         Edward R. Lincoln - Controller

(f)      The officers and directors of Hawg Hauling and Disposal, Inc., a
         subsidiary of Alamco are: 
         William H. Harmon - President, Chief Executive Officer and Director
         Mark A. Chandler - Treasurer and Director
         Frederick G. Kolb - Vice President 
         James W. Trost - Vice President
         Willard Watson, Jr. - Vice President and Director
         R. Neal Pierce, Jr. - Secretary and Director


12
<PAGE>   14
ITEM 6.  Continued

<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------------------------------
                                CG      AEI     CAT     CKY     CMD     COH    CPA      CS      TCO     CGT     CPC      CLG     CNR
                                                                                                                        (a)     (d)
- ------------------------------------------------------------------------------------------------------------------------------------
<S>                             <C>    <C>     <C>     <C>     <C>     <C>    <C>      <C>     <C>     <C>      <C>     <C>    <C>
Catherine G. Abbott                                                                             CEO     CEO
Fairfax,Virginia (23)                                                                    D      P,D      D
- ------------------------------------------------------------------------------------------------------------------------------------
Carolyn M. Afshar
Reston, Virginia (1)             S                                                       S
- ------------------------------------------------------------------------------------------------------------------------------------
Richard F. Albosta
New Providence, New Jersey (7)   D                               D
- ------------------------------------------------------------------------------------------------------------------------------------
Philip R. Aldridge
Reston, Virginia (1)                                                                    VP
- ------------------------------------------------------------------------------------------------------------------------------------
James T. Alexander
Herndon, Virginia (3)
- ------------------------------------------------------------------------------------------------------------------------------------
Steven R. Anastasio
Reston, Virginia (1)                                                                    VP
- ------------------------------------------------------------------------------------------------------------------------------------
Carmen Andreoli
Houston, Texas (31)
- ------------------------------------------------------------------------------------------------------------------------------------
Michael Ashford
Reston, Virginia (1)
- ------------------------------------------------------------------------------------------------------------------------------------
Gary W. Babin
Columbus, Ohio (2)                                                       VP   
- ------------------------------------------------------------------------------------------------------------------------------------
Gary A. Barnard                                                                                  T       T
Charleston, West Virginia (9)                                                                    C       C              
- ------------------------------------------------------------------------------------------------------------------------------------
Richard W. Beardsley
Charleston, West Virginia (18)                                                                                                   VP
- ------------------------------------------------------------------------------------------------------------------------------------
Robert H. Beeby
Green Farms, Connecticut (4)     D                                              D
- ------------------------------------------------------------------------------------------------------------------------------------
Napoleon A. Bell
Henderson, Nevada (5)                                                    D
- ------------------------------------------------------------------------------------------------------------------------------------
Margaret W. Beasley
Richmond, Virginia (17)                 S                                     
- ------------------------------------------------------------------------------------------------------------------------------------
Tejinder S. Bindra
Reston, Virginia (1)                             S                                                               S        S
- ------------------------------------------------------------------------------------------------------------------------------------
Mary C. Bloom
Fairfax, Virginia (23)                                                                          VP
- ------------------------------------------------------------------------------------------------------------------------------------
Douglas G. Borror
Dublin, Ohio (32)                                                        D
- ------------------------------------------------------------------------------------------------------------------------------------
</TABLE>



                                                                              13
<PAGE>   15
ITEM 6.  Continued

<TABLE>
<CAPTION>
- ----------------------------------------------------------------------------------------------------------------------------------
                                     Alamco      COS     CES      CEM    CEPM     CSP     TVC      TCC     CNS     CMC     CIC
                                     (e,f)                                                (b)      (c)                    
- ----------------------------------------------------------------------------------------------------------------------------------
<S>                                 <C>         <C>     <C>      <C>     <C>     <C>     <C>      <C>     <C>    <C>      <C>
Catherine G. Abbott  
Fairfax,Virginia (23)                                                                                       D       D
- ----------------------------------------------------------------------------------------------------------------------------------
Carolyn M. Afshar                 
Reston, Virginia (1)
- ----------------------------------------------------------------------------------------------------------------------------------
Richard F. Albosta                
New Providence, New Jersey (7)
- ---------------------------------------------------------------------------------------------------------------------------------- 
Philip R. Aldridge                                                                                         D        D
Reston, Virginia (1)                                                                                       P        P
- ----------------------------------------------------------------------------------------------------------------------------------
James T. Alexander   
Herndon, Virginia (3)                                                                      VP
- ----------------------------------------------------------------------------------------------------------------------------------
Steven R. Anastasio               
Reston, Virginia (1)
- ----------------------------------------------------------------------------------------------------------------------------------
Carmen Andreoli    
Houston, Texas (31)                                                       VP
- ----------------------------------------------------------------------------------------------------------------------------------
Michael Ashford     
Reston, Virginia (1)                                                                                                        S
- ----------------------------------------------------------------------------------------------------------------------------------
Gary W. Babin                     
Columbus, Ohio (2)                              
- ----------------------------------------------------------------------------------------------------------------------------------
Gary A. Barnard                   
Charleston, West Virginia (9)                                                                                             
- ----------------------------------------------------------------------------------------------------------------------------------
Richard W. Beardsley              
Charleston, West Virginia (18)    
- ----------------------------------------------------------------------------------------------------------------------------------
Robert H. Beeby                   
Green Farms, Connecticut (4)      
- ----------------------------------------------------------------------------------------------------------------------------------
Napoleon A. Bell                  
Henderson, Nevada (5)             
- ----------------------------------------------------------------------------------------------------------------------------------
Margaret W. Beasley               
Richmond, Virginia (17)                         
- ----------------------------------------------------------------------------------------------------------------------------------
Tejinder S. Bindra                
Reston, Virginia (1)                                                                       S        S                      D,VP
- ----------------------------------------------------------------------------------------------------------------------------------
Mary C. Bloom                     
Fairfax, Virginia (23)                                                                                    
- ----------------------------------------------------------------------------------------------------------------------------------
Douglas G. Borror                 
Dublin, Ohio (32)                 
- ----------------------------------------------------------------------------------------------------------------------------------
</TABLE>

                                                                              14
<PAGE>   16
ITEM 6.  Continued


<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------------------------------
                                CG      AEI     CAT    CKY     CMD     COH   CPA      CS      TCO     CGT     CPC      CLG     CNR
                                                                                                                      (a)     (d)
- ------------------------------------------------------------------------------------------------------------------------------------
<S>                             <C>    <C>      <C>    <C>     <C>     <C>   <C>     <C>     <C>     <C>     <C>     <C>      <C>
Debbie Bowyer
Charleston, West Virginia (18)                                                                                                    T
- -----------------------------------------------------------------------------------------------------------------------------------
Andrew Mason Brent                      CB                                                                      P
Richmond, Virginia (17)                  D                                                                      D
- -----------------------------------------------------------------------------------------------------------------------------------
L. Michael Bridges                               P                                                                     P, D
Reston, Virginia (1)                             D                                                                      CEO
- -----------------------------------------------------------------------------------------------------------------------------------
Donald A. Brooks
Charleston, West Virginia (9)                                                                   VP
- -----------------------------------------------------------------------------------------------------------------------------------
Wilson K. Cadman
Wichita, Kansas (11)             D                       D
- -----------------------------------------------------------------------------------------------------------------------------------
Richard Casali
Washington, DC (12)             VP                                                      VP
- -----------------------------------------------------------------------------------------------------------------------------------
Michael Casdorph
Charleston, West Virginia (9)                                                                   SVP    
- -----------------------------------------------------------------------------------------------------------------------------------
Mark A. Chandler                                                                                                                CFO
Charleston, West Virginia (18)                                                                                                  VP
- -----------------------------------------------------------------------------------------------------------------------------------
Kenneth W. Christman                                                                   
Pittsburgh, Pennsylvania (26)                                    GC             GC       
- -----------------------------------------------------------------------------------------------------------------------------------
Mark A. Cleaves
Reston, Virginia (1)
- -----------------------------------------------------------------------------------------------------------------------------------
Mark C. Darell
Reston, Virginia (1)
- -----------------------------------------------------------------------------------------------------------------------------------
Rene Dartez
Houston, Texas (13)                                                                                     VP
- -----------------------------------------------------------------------------------------------------------------------------------
Gregory S. Davis
Houston, Texas (31)
- -----------------------------------------------------------------------------------------------------------------------------------
Dennis P. Detar
Herndon, Virginia (3)
- -----------------------------------------------------------------------------------------------------------------------------------
James H. Dissen
Charleston, West Virginia (18)                                                                                                  VP
- -----------------------------------------------------------------------------------------------------------------------------------
Sheree L. Parks Downey
Charleston, West Virginia (9)                                                                   VP                             
- -----------------------------------------------------------------------------------------------------------------------------------
Scott S. Eblin
Charleston, West Virginia (9)                                                                   VP      VP
- -----------------------------------------------------------------------------------------------------------------------------------
</TABLE>



                                                                              15
<PAGE>   17
ITEM 6.  Continued

<TABLE>
<CAPTION>
- ----------------------------------------------------------------------------------------------------------------------------------
                                     Alamco      COS     CES      CEM    CEPM     CSP     TVC      TCC     CNS     CMC     CIC
                                     (e,f)                                                (b)      (c)                    
- ----------------------------------------------------------------------------------------------------------------------------------
<S>                                 <C>         <C>     <C>      <C>     <C>     <C>     <C>      <C>     <C>    <C>      <C>
Debbie Bowyer                     
Charleston, West Virginia (18)    
- ----------------------------------------------------------------------------------------------------------------------------------
Andrew Mason Brent                
Richmond, Virginia (17)           
- ----------------------------------------------------------------------------------------------------------------------------------
L. Michael Bridges                
Reston, Virginia (1)              
- ----------------------------------------------------------------------------------------------------------------------------------
Donald A. Brooks                  
Charleston, West Virginia (9)     
- ----------------------------------------------------------------------------------------------------------------------------------
Wilson K. Cadman                  
Wichita, Kansas (11)              
- ----------------------------------------------------------------------------------------------------------------------------------
Richard Casali                    
Washington, DC (12)               
- ----------------------------------------------------------------------------------------------------------------------------------
Michael Casdorph                  
Charleston, West Virginia (9)     
- ----------------------------------------------------------------------------------------------------------------------------------
Mark A. Chandler                       D
Charleston, West Virginia (18)         T
- ----------------------------------------------------------------------------------------------------------------------------------
Kenneth W. Christman              
Pittsburgh, Pennsylvania (26)     
- ----------------------------------------------------------------------------------------------------------------------------------
Mark A. Cleaves                                                                          
Reston, Virginia (1)                                                                                       S
- ----------------------------------------------------------------------------------------------------------------------------------
Mark C. Darell                                                                           
Reston, Virginia (1)                             GC                                      
- ----------------------------------------------------------------------------------------------------------------------------------
Rene Dartez                       
Houston, Texas (13)               
- ----------------------------------------------------------------------------------------------------------------------------------
Gregory S. Davis                                                                         
Houston, Texas (31)                                      VP       VP                     
- ----------------------------------------------------------------------------------------------------------------------------------
Dennis P. Detar                                                                            T
Herndon, Virginia (3)                                                                      C
- ----------------------------------------------------------------------------------------------------------------------------------
James H. Dissen                   
Charleston, West Virginia (18)                  
- ----------------------------------------------------------------------------------------------------------------------------------
Sheree L. Parks Downey            
Charleston, West Virginia (9)                   
- ----------------------------------------------------------------------------------------------------------------------------------
Scott S. Eblin                    
Charleston, West Virginia (9)     
- ----------------------------------------------------------------------------------------------------------------------------------
</TABLE>


                                                                              16
<PAGE>   18
ITEM 6.  Continued


<TABLE>
<CAPTION>
- ----------------------------------------------------------------------------------------------------------------------------------
                                CG      AEI     CAT    CKY     CMD     COH   CPA      CS      TCO     CGT     CPC     CLG    CNR
                                                                                                                     (a)    (d)
- ----------------------------------------------------------------------------------------------------------------------------------
<S>                             <C>    <C>      <C>    <C>     <C>     <C>   <C>     <C>     <C>     <C>     <C>    <C>     <C>
Reston, Virginia (1)                                                                     VP
- -----------------------------------------------------------------------------------------------------------------------------------
Paul Feldman
Reston, Virginia (1)
- -----------------------------------------------------------------------------------------------------------------------------------
Mark A. Ferman
Charleston, West Virginia (9)                                                                                                   VP
- -----------------------------------------------------------------------------------------------------------------------------------
Louis E. Font                                                                                           
Reston, Virginia (1)                                                                    D,SVP           
- -----------------------------------------------------------------------------------------------------------------------------------
Donato Furlano
Columbus, Ohio  (15)                                                                      C
- -----------------------------------------------------------------------------------------------------------------------------------
Phil Glaessner
Houston, Texas (31)
- -----------------------------------------------------------------------------------------------------------------------------------
Dr. Michael J. Gluckman
Herndon, Virginia (3)
- -----------------------------------------------------------------------------------------------------------------------------------
Stephen E. Greene
Columbus, Ohio (2)                                                      VP
- -----------------------------------------------------------------------------------------------------------------------------------
Jeffrey W. Grossman               CAO
Reston, Virginia (1)             VP,C             D,T                                       VP
- -----------------------------------------------------------------------------------------------------------------------------------
Patricia A. Hammick
Reston, Virginia (1)                                                                     VP
- -----------------------------------------------------------------------------------------------------------------------------------
Michael Hardy
Reston, Virginia (1)
- -----------------------------------------------------------------------------------------------------------------------------------
Dan Hargreaves
Houston, Texas (31)
- -----------------------------------------------------------------------------------------------------------------------------------
William H. Harmon                                                                                                               CEO
Charleston, West Virginia (18)                                                                                                  D,P
- -----------------------------------------------------------------------------------------------------------------------------------
James W. Hart, Jr.                                                                                              
Houston, Texas (13)                                                                                     VP      
- -----------------------------------------------------------------------------------------------------------------------------------
Edward D. Harvey, Jr.
Reston, Virginia (1)                                                                                            
- -----------------------------------------------------------------------------------------------------------------------------------
Stephen J. Harvey
Herndon, Virginia (3)                                                                   VP
- -----------------------------------------------------------------------------------------------------------------------------------
Sharon B. Heaton
Reston, Virginia (1)                                                                    VP
- -----------------------------------------------------------------------------------------------------------------------------------
</TABLE>


                                                                              17
<PAGE>   19
ITEM 6.  Continued


<TABLE>
<CAPTION>
- ----------------------------------------------------------------------------------------------------------------------------------
                                     Alamco      COS     CES      CEM    CEPM     CSP     TVC      TCC     CNS     CMC     CIC
                                     (e,f)                                                (b)      (c)                    
- ----------------------------------------------------------------------------------------------------------------------------------
<S>                                 <C>         <C>     <C>      <C>     <C>     <C>     <C>      <C>     <C>    <C>      <C>
                                  
Reston, Virginia (1)              
- ----------------------------------------------------------------------------------------------------------------------------------
Paul Feldman                                             CEO
Reston, Virginia (1)                                     D,P
- ----------------------------------------------------------------------------------------------------------------------------------
Mark A. Ferman                    
Charleston, West Virginia (9)     
- ----------------------------------------------------------------------------------------------------------------------------------
Louis E. Font                     
Reston, Virginia (1)              
- ----------------------------------------------------------------------------------------------------------------------------------
Donato Furlano                    
Columbus, Ohio  (15)                                                                                       T       T
- ----------------------------------------------------------------------------------------------------------------------------------
Phil Glaessner                                                           CEO,D
Houston, Texas (31)                                      SVP               P
- ----------------------------------------------------------------------------------------------------------------------------------
Dr. Michael J. Gluckman                                                                  CEO
Herndon, Virginia (3)                                                                     P,D
- ----------------------------------------------------------------------------------------------------------------------------------
Stephen E. Greene                 
Columbus, Ohio (2)                
- ----------------------------------------------------------------------------------------------------------------------------------
Jeffrey W. Grossman               
Reston, Virginia (1)                                                                                T                       D
- ----------------------------------------------------------------------------------------------------------------------------------
Patricia A. Hammick               
Reston, Virginia (1)                                      D                                                        D
- ----------------------------------------------------------------------------------------------------------------------------------
Michael Hardy                     
Reston, Virginia (1)                                                                                                       D
- ----------------------------------------------------------------------------------------------------------------------------------
Dan Hargreaves                    
Houston, Texas (31)                                       VP
- ----------------------------------------------------------------------------------------------------------------------------------
William H. Harmon                     D,P
Charleston, West Virginia (18)        CEO
- ----------------------------------------------------------------------------------------------------------------------------------
James W. Hart, Jr.                
Houston, Texas (13)               
- ----------------------------------------------------------------------------------------------------------------------------------
Edward D. Harvey, Jr.             
Reston, Virginia (1)                                                                                                      T
- ----------------------------------------------------------------------------------------------------------------------------------
Stephen J. Harvey                 
Herndon, Virginia (3)                                    SVP               T                      P,D      D              
- ----------------------------------------------------------------------------------------------------------------------------------
Sharon B. Heaton                  
Reston, Virginia (1)                                      D
- ----------------------------------------------------------------------------------------------------------------------------------
</TABLE>




                                                                              18
<PAGE>   20
ITEM 6.  Continued


<TABLE>
<CAPTION>
- ---------------------------------------------------------------------------------------------------------------------------------
                                CG      AEI    CAT    CKY     CMD     COH   CPA      CS      TCO     CGT     CPC     CLG    CNR
                                                                                                                    (a)    (d)
- ---------------------------------------------------------------------------------------------------------------------------------
<S>                             <C>    <C>     <C>    <C>     <C>     <C>   <C>     <C>     <C>     <C>     <C>    <C>     <C>
James P. Heffernan
Bronxville, New York (33)       D                                               D
- ------------------------------------------------------------------------------------------------------------------------------------
Laura M. Hehner                
Richmond, Virginia (25)        
- ------------------------------------------------------------------------------------------------------------------------------------
Karen L. Hendrick              
Reston, Virginia (1)            D
- ------------------------------------------------------------------------------------------------------------------------------------
Donald P. Hodel                
Chesapeake, Virginia (10)       D                              D
- ------------------------------------------------------------------------------------------------------------------------------------
Malcolm T. Hopkins             
Asheville, North Carolina (20)  D                       D
- ------------------------------------------------------------------------------------------------------------------------------------
Thomas L. Hughes                                                                                                                
Reston, Virginia (1)                                                                   VP                                       
- ------------------------------------------------------------------------------------------------------------------------------------
Mike John                      
Charleston, West Virginia (18)                                                                                                   VP
- ------------------------------------------------------------------------------------------------------------------------------------
J. Bennett Johnston            
Washington, D.C. (16)           D
- ------------------------------------------------------------------------------------------------------------------------------------
Edward P. Jarmas               
Herndon, Virginia (3)          
- ------------------------------------------------------------------------------------------------------------------------------------
James A. Jarrell               
Charleston, West Virginia (9)                                                                  S,GC
- ------------------------------------------------------------------------------------------------------------------------------------
John H. Jennrich               
Reston, Virginia (1)                                                                  D, VP                                     
- ------------------------------------------------------------------------------------------------------------------------------------
Malcolm Jozoff                 
Phoenix, Arizona (14)           D                       D
- ------------------------------------------------------------------------------------------------------------------------------------
Raymond R. Kaskel                                                                        D
Reston, Virginia (1)                           D                                        SVP                      D        D       D
- ------------------------------------------------------------------------------------------------------------------------------------
Joseph W. Kelly                
Lexington, Kentucky (24)                              VP                                                                        
- ------------------------------------------------------------------------------------------------------------------------------------
Charlotte P. Kessler           
New Albany, Ohio (21)                                                   D
- ------------------------------------------------------------------------------------------------------------------------------------
Glen L. Kettering                                                                                D
Fairfax, Virginia (23)                                                                          SVP    
- ------------------------------------------------------------------------------------------------------------------------------------
Peter J. Kinsella              
Fairfax, Virginia (23)                                                                          VP     
- ------------------------------------------------------------------------------------------------------------------------------------
</TABLE>
                               
                              



                                                                              19
<PAGE>   21
ITEM 6.  Continued


<TABLE>
<CAPTION>
- ----------------------------------------------------------------------------------------------------------------------------------
                                     Alamco      COS     CES      CEM    CEPM     CSP     TVC      TCC     CNS     CMC     CIC
                                     (e,f)                                                (b)      (c)                    
- ----------------------------------------------------------------------------------------------------------------------------------
<S>                                 <C>         <C>     <C>      <C>     <C>     <C>     <C>      <C>     <C>    <C>      <C>
James P. Heffernan                
Bronxville, New York (33)         
- ----------------------------------------------------------------------------------------------------------------------------------
Laura M. Hehner                   
Richmond, Virginia (25)                          VP
- ----------------------------------------------------------------------------------------------------------------------------------
Karen L. Hendrick                 
Reston, Virginia (1)              
- ----------------------------------------------------------------------------------------------------------------------------------
Donald P. Hodel                   
Chesapeake, Virginia (10)         
- ----------------------------------------------------------------------------------------------------------------------------------
Malcolm T. Hopkins                
Asheville, North Carolina (20)    
- ----------------------------------------------------------------------------------------------------------------------------------
Thomas L. Hughes                  
Reston, Virginia (1)              
- ----------------------------------------------------------------------------------------------------------------------------------
Mike John                         
Charleston, West Virginia (18)    
- ----------------------------------------------------------------------------------------------------------------------------------
J. Bennett Johnston               
Washington, D.C. (16)                             D
- ----------------------------------------------------------------------------------------------------------------------------------
Edward P. Jarmas                  
Herndon, Virginia (3)                                                                      VP
- ----------------------------------------------------------------------------------------------------------------------------------
James A. Jarrell                  
Charleston, West Virginia (9)                   
- ----------------------------------------------------------------------------------------------------------------------------------
John H. Jennrich                  
Reston, Virginia (1)                                    
- ----------------------------------------------------------------------------------------------------------------------------------
Malcolm Jozoff                    
Phoenix, Arizona (14)             
- ----------------------------------------------------------------------------------------------------------------------------------
Raymond R. Kaskel                 
Reston, Virginia (1)                                      D        D       D       D       D
- ----------------------------------------------------------------------------------------------------------------------------------
Joseph W. Kelly                   
Lexington, Kentucky (24)                                
- ----------------------------------------------------------------------------------------------------------------------------------
Charlotte P. Kessler              
New Albany, Ohio (21)             
- ----------------------------------------------------------------------------------------------------------------------------------
Glen L. Kettering                 
Fairfax, Virginia (23)            
- ----------------------------------------------------------------------------------------------------------------------------------
Peter J. Kinsella                 
Fairfax, Virginia (23)            
- ----------------------------------------------------------------------------------------------------------------------------------
</TABLE>


                                                                              20
<PAGE>   22
ITEM 6.  Continued


<TABLE>
<CAPTION>
- ---------------------------------------------------------------------------------------------------------------------------------
                                CG      AEI    CAT    CKY     CMD     COH   CPA      CS      TCO     CGT     CPC     CLG    CNR
                                                                                                                    (a)    (d)
- ---------------------------------------------------------------------------------------------------------------------------------
<S>                             <C>    <C>     <C>    <C>     <C>     <C>   <C>     <C>     <C>     <C>     <C>    <C>     <C>
Fredrick G. Kolb
Charleston, West Virginia (18)                                                                                               VP
- ------------------------------------------------------------------------------------------------------------------------------------
Marshall D. Lang
Canonsburg, Pennsylvania (28)
- ------------------------------------------------------------------------------------------------------------------------------------
William J, Lavelle
Columbus, Ohio (2)                                     VP      VP              VP
- ------------------------------------------------------------------------------------------------------------------------------------
Dr. William E. Lavery
Blacksburg, Virginia (22)       D
- ------------------------------------------------------------------------------------------------------------------------------------
James R. Lee
Columbus, Ohio (2)                                     SVP     SVP     SVP     SVP
- ------------------------------------------------------------------------------------------------------------------------------------
Ed R. Lincoln
Charleston, West Virginia (18)                                                                                               C
- ------------------------------------------------------------------------------------------------------------------------------------
C. Thomas Lowrie
Pittsburgh, Pennsylvania (26)                                   VP             VP                                              
- ------------------------------------------------------------------------------------------------------------------------------------
David L. Lugar                          D
Houston, Texas (29)                     P                                                                                        
- ------------------------------------------------------------------------------------------------------------------------------------
Stephen T. MacQueen
Lusby, Maryland (19)                                                                                               C
- ------------------------------------------------------------------------------------------------------------------------------------
Philip Magley                                                                       SVP
Reston, Virginia (1)                                                                 D
- ------------------------------------------------------------------------------------------------------------------------------------
Richard. A. Manson
Canonsburg, Pennsylvania (28)
- ------------------------------------------------------------------------------------------------------------------------------------
W. Harris Marple                      
Houston, Texas (13)                                                                                   VP
- ------------------------------------------------------------------------------------------------------------------------------------
Gerald E. Mayo
Hilton Head, S. Carolina (6)    D                                        D
- ------------------------------------------------------------------------------------------------------------------------------------
James C. McDonnell
Reston, Virginia (1)
- ------------------------------------------------------------------------------------------------------------------------------------
Andrew P. McDowell
Reston, Virginia (1)
- ------------------------------------------------------------------------------------------------------------------------------------
Dennis W. McFarland                                                    SVP     
Columbus, Ohio (2)                                       T              T     
- ------------------------------------------------------------------------------------------------------------------------------------
James A. McGehee, Jr.                                                                                        VP
Richmond, Virginia (17)                                                                                      D
- ------------------------------------------------------------------------------------------------------------------------------------
</TABLE>





                                                                              21
<PAGE>   23
ITEM 6.  Continued


<TABLE>
<CAPTION>
- ----------------------------------------------------------------------------------------------------------------------------------
                                     Alamco      COS     CES      CEM    CEPM     CSP     TVC      TCC     CNS     CMC     CIC
                                     (e,f)                                                (b)      (c)                    
- ----------------------------------------------------------------------------------------------------------------------------------
<S>                                 <C>         <C>     <C>      <C>     <C>     <C>     <C>      <C>     <C>    <C>      <C>
Fredrick G. Kolb                  
Charleston, West Virginia (18)         VP
- ----------------------------------------------------------------------------------------------------------------------------------
Marshall D. Lang                  
Canonsburg, Pennsylvania (28)                             VP      VP
- ----------------------------------------------------------------------------------------------------------------------------------
William J, Lavelle                
Columbus, Ohio (2)                              VP      
- ----------------------------------------------------------------------------------------------------------------------------------
Dr. William E. Lavery             
Blacksburg, Virginia (22)                        D
- ----------------------------------------------------------------------------------------------------------------------------------
James R. Lee                      
Columbus, Ohio (2)                              SVP
- ----------------------------------------------------------------------------------------------------------------------------------
Ed R. Lincoln                     
Charleston, West Virginia (18)    
- ----------------------------------------------------------------------------------------------------------------------------------
C. Thomas Lowrie                  
Pittsburgh, Pennsylvania (26)     
- ----------------------------------------------------------------------------------------------------------------------------------
David L. Lugar                    
Houston, Texas (29)               
- ----------------------------------------------------------------------------------------------------------------------------------
Stephen T. MacQueen               
Lusby, Maryland (19)              
- ----------------------------------------------------------------------------------------------------------------------------------
Philip Magley                     
Reston, Virginia (1)              
- ----------------------------------------------------------------------------------------------------------------------------------
Richard. A. Manson                
Canonsburg, Pennsylvania (28)                             VP
- ----------------------------------------------------------------------------------------------------------------------------------
W. Harris Marple                  
Houston, Texas (13)               
- ----------------------------------------------------------------------------------------------------------------------------------
Gerald E. Mayo                    
Hilton Head, S. Carolina (6)      
- ----------------------------------------------------------------------------------------------------------------------------------
James C. McDonnell                
Reston, Virginia (1)                                      VP
- ----------------------------------------------------------------------------------------------------------------------------------
Andrew P. McDowell                
Reston, Virginia (1)                                                                                                S
- ----------------------------------------------------------------------------------------------------------------------------------
Dennis W. McFarland                             
Columbus, Ohio (2)                                T
- ----------------------------------------------------------------------------------------------------------------------------------
James A. McGehee, Jr.             
Richmond, Virginia (17)           
- ----------------------------------------------------------------------------------------------------------------------------------
</TABLE>




                                                                              22
<PAGE>   24
ITEM 6.  Continued


<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------------------------------
                                CG      AEI    CAT    CKY     CMD     COH    CPA      CS      TCO     CGT     CPC     CLG    CNR
                                                                                                                    (a)    (d)
- ------------------------------------------------------------------------------------------------------------------------------------
<S>                             <C>    <C>     <C>    <C>     <C>     <C>    <C>    <C>      <C>     <C>     <C>    <C>     <C>
Terrance L. McGill
Houston, Texas (13)                                                                           SVP      P,D
- ------------------------------------------------------------------------------------------------------------------------------------
Steve R. Melton                                                                                        S,GC
Houston, Texas (13)                                                                                     VP
- ------------------------------------------------------------------------------------------------------------------------------------
Jeffrey A. Meyers
Columbus, Ohio (15)
- ------------------------------------------------------------------------------------------------------------------------------------
Ellen L. Milnes
Columbus, Ohio (2)                                                      VP                             
- ------------------------------------------------------------------------------------------------------------------------------------
Pamela R. Murphy
Herndon, Virginia (3)
- ------------------------------------------------------------------------------------------------------------------------------------
Terrence J. Murphy
Pittsburgh, Pennsylvania (26)                                    SVP           SVP
- ------------------------------------------------------------------------------------------------------------------------------------
Richard A. Newbold
Columbus, Ohio (2)                                                      VP      
- ------------------------------------------------------------------------------------------------------------------------------------
Sheldon M. Nordin
Richmond, Virginia (17)                  T                                                                       T
- ------------------------------------------------------------------------------------------------------------------------------------
Gary B. Nunnally
Houston, Texas (29)                      D
- ------------------------------------------------------------------------------------------------------------------------------------
Michael W. O'Donnell            SVP                                                     SVP
Reston, Virginia (1)            CFO              D        D       D             D      CFO,D     D       D       D        D       D
- ------------------------------------------------------------------------------------------------------------------------------------
Kathleen O' Leary
Fairfax, Virginia (23)                                                                          VP      VP
- ------------------------------------------------------------------------------------------------------------------------------------
Douglas E. Olesen
Columbus, Ohio (27)             D                                         D
- ------------------------------------------------------------------------------------------------------------------------------------
James J. Ostertag
Reston, Virginia (1)                                                                                   
- ------------------------------------------------------------------------------------------------------------------------------------
Nicholas A. Parillo
Reston, Virginia (1)                                                                    VP
- ------------------------------------------------------------------------------------------------------------------------------------
John W. Partridge, Jr.
Columbus, Ohio (2)                                                       SVP
- ------------------------------------------------------------------------------------------------------------------------------------
David Pentzien
Fairfax, Virginia (23)                                                                          VP
- ------------------------------------------------------------------------------------------------------------------------------------
Thomas E. Perkins, Jr.
Richmond, Virginia (17)                D                                                                         VP             
- ------------------------------------------------------------------------------------------------------------------------------------
</TABLE>




                                                                              23
<PAGE>   25
ITEM 6.  Continued


<TABLE>
<CAPTION>
- ----------------------------------------------------------------------------------------------------------------------------------
                                     Alamco      COS     CES      CEM    CEPM     CSP     TVC      TCC     CNS     CMC     CIC
                                     (e,f)                                                (b)      (c)                    
- ----------------------------------------------------------------------------------------------------------------------------------
<S>                                 <C>         <C>     <C>      <C>     <C>     <C>     <C>      <C>     <C>    <C>      <C>
Terrance L. McGill                
Houston, Texas (13)               
- ----------------------------------------------------------------------------------------------------------------------------------
Steve R. Melton                   
Houston, Texas (13)               
- ----------------------------------------------------------------------------------------------------------------------------------
Jeffrey A. Meyers                 
Columbus, Ohio (15)                                                               VP
- ----------------------------------------------------------------------------------------------------------------------------------
Ellen L. Milnes                   
Columbus, Ohio (2)                
- ----------------------------------------------------------------------------------------------------------------------------------
Pamela R. Murphy                  
Herndon, Virginia (3)                                     VP      VP
- ----------------------------------------------------------------------------------------------------------------------------------
Terrence J. Murphy                
Pittsburgh, Pennsylvania (26)     
- ----------------------------------------------------------------------------------------------------------------------------------
Richard A. Newbold                
Columbus, Ohio (2)                
- ----------------------------------------------------------------------------------------------------------------------------------
Sheldon M. Nordin                 
Richmond, Virginia (17)           
- ----------------------------------------------------------------------------------------------------------------------------------
Gary B. Nunnally                  
Houston, Texas (29)               
- ----------------------------------------------------------------------------------------------------------------------------------
Michael W. O'Donnell              
Reston, Virginia (1)                              D       D        D       D       D       D        D       D       D     
- ----------------------------------------------------------------------------------------------------------------------------------
Kathleen O' Leary                 
Fairfax, Virginia (23)            
- ----------------------------------------------------------------------------------------------------------------------------------
Douglas E. Olesen                 
Columbus, Ohio (27)               
- ----------------------------------------------------------------------------------------------------------------------------------
James J. Ostertag                 
Reston, Virginia (1)                                                                                                      D,VP
- ----------------------------------------------------------------------------------------------------------------------------------
Nicholas A. Parillo               
Reston, Virginia (1)                                                                                                      D,P
- ----------------------------------------------------------------------------------------------------------------------------------
John W. Partridge, Jr.            
Columbus, Ohio (2)                
- ----------------------------------------------------------------------------------------------------------------------------------
David Pentzien                    
Fairfax, Virginia (23)            
- ----------------------------------------------------------------------------------------------------------------------------------
Thomas E. Perkins, Jr.            
Richmond, Virginia (17)           
- ----------------------------------------------------------------------------------------------------------------------------------
</TABLE>



                                                                              24
<PAGE>   26
ITEM 6.  Continued


<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------------------------------
                               CG      AEI    CAT    CKY     CMD     COH    CPA      CS      TCO     CGT     CPC     CLG    CNR
                                                                                                                    (a)    (d)
- ------------------------------------------------------------------------------------------------------------------------------------
<S>                            <C>    <C>     <C>    <C>     <C>     <C>    <C>    <C>      <C>     <C>     <C>    <C>     <C>
Cheryl A. Peters
Columbus, Ohio (2)                                                    VP                               
- ------------------------------------------------------------------------------------------------------------------------------------
Dennis A. Pick
Reston, Virginia (1)                                                                    VP
- ------------------------------------------------------------------------------------------------------------------------------------
Thomas J. W. Pickard
Columbus, Ohio (2)                                                    VP                               
- ------------------------------------------------------------------------------------------------------------------------------------
R. Neal Pierce, Jr.                                                                                                               S
Charleston, West Virginia (3)                                                                                                  GC,VP
- ------------------------------------------------------------------------------------------------------------------------------------
Olga A. Polemitou                                                                       VP
Reston, Virginia (1)                                                                    GA                                      
- ------------------------------------------------------------------------------------------------------------------------------------
Melanie K. Popovich
Pittsburgh, Pennsylvania (26)                                 VP              VP                                                
- ------------------------------------------------------------------------------------------------------------------------------------
Brian E. Rettenmaier
Houston, Texas (31)
- ------------------------------------------------------------------------------------------------------------------------------------
Oliver G. Richard III          CB,P                                                    CB,P
Reston, Virginia (1)           CEO,D                    D       D               D      CEO,D     D       D       D        D       D
- ------------------------------------------------------------------------------------------------------------------------------------
Gary J. Robinson                                               CEO             CEO
Pittsburgh, Pennsylvania (26)                                  P,D             P,D       D
- ------------------------------------------------------------------------------------------------------------------------------------
Stephen A. Schmotzer
Columbia, Ohio (2)                                                     VP
- ------------------------------------------------------------------------------------------------------------------------------------
Glen E. Schuler                                                                                        
Fairfax, Virginia (23)                                                                          VP    
- ------------------------------------------------------------------------------------------------------------------------------------
Peter M. Schwolsky             CLO                                                    CLO,D
Reston, Virginia (1)           SVP                                                     SVP      D       D       D        D       D
- ------------------------------------------------------------------------------------------------------------------------------------
Joseph T. Sinclair                                                            
Pittsburgh, Pennsylvania (26)                                   VP              VP     
- ------------------------------------------------------------------------------------------------------------------------------------
Robert C. Skaggs, Jr.                                  CEO             CEO    
Columbus, Ohio (2)                                     P,D             P,D              D
- ------------------------------------------------------------------------------------------------------------------------------------
Rose M. Smith
Columbus, Ohio (2)                                                     VP
- ------------------------------------------------------------------------------------------------------------------------------------
Stephen P. Smith                                                                                CFO     CFO
Fairfax, Virginia (23)                                                                         D,SVP   D,SVP
- ------------------------------------------------------------------------------------------------------------------------------------
Lawrence D. Smore                                                             
Richmond, Virgina (25)                                                                 
- ------------------------------------------------------------------------------------------------------------------------------------
</TABLE>


                                                                              25
<PAGE>   27
ITEM 6.  Continued


<TABLE>
<CAPTION>
- ----------------------------------------------------------------------------------------------------------------------------------
                                     Alamco      COS     CES      CEM    CEPM     CSP     TVC      TCC     CNS     CMC     CIC
                                     (e,f)                                                (b)      (c)                    
- ----------------------------------------------------------------------------------------------------------------------------------
<S>                                 <C>         <C>     <C>      <C>     <C>     <C>     <C>      <C>     <C>    <C>      <C>


Cheryl A. Peters                  
Columbus, Ohio (2)                
- ----------------------------------------------------------------------------------------------------------------------------------
Dennis A. Pick                    
Reston, Virginia (1)              
- ----------------------------------------------------------------------------------------------------------------------------------
Thomas J. W. Pickard              
Columbus, Ohio (2)                
- ----------------------------------------------------------------------------------------------------------------------------------
R. Neal Pierce, Jr.               
Charleston, West Virginia (3)         D,S
- ----------------------------------------------------------------------------------------------------------------------------------
Olga A. Polemitou                 
Reston, Virginia (1)              
- ----------------------------------------------------------------------------------------------------------------------------------
Melanie K. Popovich               
Pittsburgh, Pennsylvania (26)     
- ----------------------------------------------------------------------------------------------------------------------------------
Brian E. Rettenmaier              
Houston, Texas (31)                                       VP
- ----------------------------------------------------------------------------------------------------------------------------------
Oliver G. Richard III             
Reston, Virginia (1)                              D                                                         D       D     
- ----------------------------------------------------------------------------------------------------------------------------------
Gary J. Robinson                  
Pittsburgh, Pennsylvania (26)     
- ----------------------------------------------------------------------------------------------------------------------------------
Stephen A. Schmotzer              
Columbia, Ohio (2)                
- ----------------------------------------------------------------------------------------------------------------------------------
Glen E. Schuler                   
Fairfax, Virginia (23)            
- ----------------------------------------------------------------------------------------------------------------------------------
Peter M. Schwolsky                
Reston, Virginia (1)                                                                       D                D       D     
- ----------------------------------------------------------------------------------------------------------------------------------
Joseph T. Sinclair                              
Pittsburgh, Pennsylvania (26)                   
- ----------------------------------------------------------------------------------------------------------------------------------
Robert C. Skaggs, Jr.                           
Columbus, Ohio (2)                                                                                         D       D
- ----------------------------------------------------------------------------------------------------------------------------------
Rose M. Smith                     
Columbus, Ohio (2)                
- ----------------------------------------------------------------------------------------------------------------------------------
Stephen P. Smith                  
Fairfax, Virginia (23)                          
- ----------------------------------------------------------------------------------------------------------------------------------
Lawrence D. Smore                               
Richmond, Virgina (25)                            VP
- ----------------------------------------------------------------------------------------------------------------------------------
</TABLE>


                                                                              26
<PAGE>   28
ITEM 6.  Continued


<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------------------------------
                               CG      AEI    CAT    CKY     CMD     COH    CPA      CS     TCO     CGT     CPC     CLG    CNR
                                                                                                                   (a)    (d)
- ------------------------------------------------------------------------------------------------------------------------------------
<S>                            <C>    <C>     <C>    <C>     <C>     <C>    <C>    <C>     <C>     <C>     <C>   <C>     <C>
Andrew J. Sonderman                                     D,S             D,S
Columbus, Ohio (2)                                      GC      D,S     GC      D,S
- ------------------------------------------------------------------------------------------------------------------------------------
Leslie Strand
Charleston, West Virginia (9)                                                                   VP
- ------------------------------------------------------------------------------------------------------------------------------------
Robert D. Stuart
Fairfax, Virginia (23)                                                                           VP    VP
- ------------------------------------------------------------------------------------------------------------------------------------
James R. Thomas II
Charleston, West Virginia (34)  D
- ------------------------------------------------------------------------------------------------------------------------------------
Jerry A. Tischer
Toledo, Ohio (8)                                                         VP
- ------------------------------------------------------------------------------------------------------------------------------------
James W. Trost
Reston, Virginia (1)                            VP       VP      VP      VP      VP      VP    VP      VP       VP     VP      VP
- ------------------------------------------------------------------------------------------------------------------------------------
Anthony Trubisz, Jr.
Richmond, Virgina (25)                                                                    D
- ------------------------------------------------------------------------------------------------------------------------------------
Genevieve A. Tuchow
Columbus, Ohio (2)                                                     VP                              
- ------------------------------------------------------------------------------------------------------------------------------------
Roger Vari                                                                              
Pittsburgh, Pennsylvania (26)                                  VP,T             VP,T                                           
- ------------------------------------------------------------------------------------------------------------------------------------
Bernard T. Walsh
Charleston, West Virginia (9)                                                                   VP
- ------------------------------------------------------------------------------------------------------------------------------------
Stephen M. Warnick
Fairfax, Virginia (23)                                                                           VP      VP                    VP
- ------------------------------------------------------------------------------------------------------------------------------------
Willard Watson, Jr.
Charleston, West Virginia (9)                                                                                                  VP
- ------------------------------------------------------------------------------------------------------------------------------------
Robert W. Welch, Jr.
Reston, Virginia (1)                                                                     VP
- ------------------------------------------------------------------------------------------------------------------------------------
Robert B. Wemyss, Jr.
Richmond, Virginia (25)
- ------------------------------------------------------------------------------------------------------------------------------------
William H. White
Charleston, West Virginia (9)                                                                   VP
- ------------------------------------------------------------------------------------------------------------------------------------
R. H. Whitescarver
Richmond, Virginia (17)                                                                                         VP
- ------------------------------------------------------------------------------------------------------------------------------------
David A. Whitmore
Reston, Virginia (1)                                                                     VP
- ------------------------------------------------------------------------------------------------------------------------------------
</TABLE>




                                                                              27
<PAGE>   29
ITEM 6.  Continued


<TABLE>
<CAPTION>
- ----------------------------------------------------------------------------------------------------------------------------------
                                     Alamco      COS     CES      CEM    CEPM     CSP     TVC      TCC     CNS     CMC     CIC
                                     (e,f)                                                (b)      (c)                    
- ----------------------------------------------------------------------------------------------------------------------------------
<S>                                 <C>         <C>     <C>      <C>     <C>     <C>     <C>      <C>     <C>    <C>      <C>
Andrew J. Sonderman               
Columbus, Ohio (2)                               D,S
- ----------------------------------------------------------------------------------------------------------------------------------
Leslie Strand                     
Charleston, West Virginia (9)     
- ----------------------------------------------------------------------------------------------------------------------------------
Robert D. Stuart                  
Fairfax, Virginia (23)            
- ----------------------------------------------------------------------------------------------------------------------------------
James R. Thomas II                
Charleston, West Virginia (34)                    D
- ----------------------------------------------------------------------------------------------------------------------------------
Jerry A. Tischer                  
Toledo, Ohio (8)                                
- ----------------------------------------------------------------------------------------------------------------------------------
James W. Trost                    
Reston, Virginia (1)                            VP        VP       VP      VP      VP      VP       VP      VP      VP      VP
- ----------------------------------------------------------------------------------------------------------------------------------
Anthony Trubisz, Jr.                             P,D
Richmond, Virgina (25)                           CEO
- ----------------------------------------------------------------------------------------------------------------------------------
Genevieve A. Tuchow               
Columbus, Ohio (2)                
- ----------------------------------------------------------------------------------------------------------------------------------
Roger Vari                        
Pittsburgh, Pennsylvania (26)                                                                                             
- ----------------------------------------------------------------------------------------------------------------------------------
Bernard T. Walsh                  
Charleston, West Virginia (9)     
- ----------------------------------------------------------------------------------------------------------------------------------
Stephen M. Warnick                
Fairfax, Virginia (23)            
- ----------------------------------------------------------------------------------------------------------------------------------
Willard Watson, Jr.               
Charleston, West Virginia (9)         D,VP
- ----------------------------------------------------------------------------------------------------------------------------------
Robert W. Welch, Jr.              
Reston, Virginia (1)              
- ----------------------------------------------------------------------------------------------------------------------------------
Robert B. Wemyss, Jr.                             D
Richmond, Virginia (25)                          VP
- ----------------------------------------------------------------------------------------------------------------------------------
William H. White                  
Charleston, West Virginia (9)     
- ----------------------------------------------------------------------------------------------------------------------------------
R. H. Whitescarver                
Richmond, Virginia (17)           
- ----------------------------------------------------------------------------------------------------------------------------------
David A. Whitmore                 
Reston, Virginia (1)              
- ----------------------------------------------------------------------------------------------------------------------------------
</TABLE>



                                                                              28
<PAGE>   30
ITEM 6.  Continued


<TABLE>
<CAPTION>
- -----------------------------------------------------------------------------------------------------------------------------------
                               CG      AEI    CAT    CKY     CMD     COH    CPA      CS     TCO     CGT     CPC     CLG    CNR
                                                                                                                   (a)    (d)
- -----------------------------------------------------------------------------------------------------------------------------------
<S>                            <C>    <C>     <C>    <C>     <C>     <C>    <C>    <C>     <C>     <C>     <C>   <C>     <C>
Larry L. Willeke                      
Fairfax, Virginia (23)                                                                        VP     
- -----------------------------------------------------------------------------------------------------------------------------------
Stephen M. Wilner             
Charleston, West Virginia (9)                                                                 VP      VP
- -----------------------------------------------------------------------------------------------------------------------------------
William R. Wilson             
Exton, Pennsylvania (30)        D                                              D
- -----------------------------------------------------------------------------------------------------------------------------------
K. Fredrick Wrenn, Jr.        
Charleston, West Virginia (9)                                                                 VP     
- -----------------------------------------------------------------------------------------------------------------------------------
Robert M. Zulandi                                                                                    
Herndon, Virginia (3)                                                                                
- -----------------------------------------------------------------------------------------------------------------------------------
</TABLE>                      
                              
                             
                                                                              29
<PAGE>   31
ITEM 6.  Continued


<TABLE>
<CAPTION>
- ----------------------------------------------------------------------------------------------------------------------------------
                                     Alamco      COS     CES      CEM    CEPM     CSP     TVC      TCC     CNS     CMC     CIC
                                     (e,f)                                                (b)      (c)                    
- ----------------------------------------------------------------------------------------------------------------------------------
<S>                                 <C>         <C>     <C>      <C>     <C>     <C>     <C>      <C>     <C>    <C>      <C>
Larry L. Willeke                  
Fairfax, Virginia (23)            
- ----------------------------------------------------------------------------------------------------------------------------------
Stephen M. Wilner                 
Charleston, West Virginia (9)     
- ----------------------------------------------------------------------------------------------------------------------------------
William R. Wilson                 
Exton, Pennsylvania (30)          
- ----------------------------------------------------------------------------------------------------------------------------------
K. Fredrick Wrenn, Jr.            
Charleston, West Virginia (9)     
- ----------------------------------------------------------------------------------------------------------------------------------
Robert M. Zulandi                                                                          D
Herndon, Virginia (3)                                                                     SVP
- ----------------------------------------------------------------------------------------------------------------------------------
</TABLE>


                                                                              30
<PAGE>   32
Part II. Financial connections as of December 31, 1997*.

<TABLE>
<CAPTION>
                                                                       Position
                                                                        Held In                  Applicable
Name of Officer               Name and Location of                     Financial                 Exemption
  or Director                 Financial Institution                   Institution                   Rule
      (1)                              (2)                                (3)                       (4)
<S>                           <C>                                     <C>                       <C>
William E. Lavery             First Union of VA/MD/DC                   Director                70(a) & 70(c)
                              Richmond, Virginia

James R. Thomas II            One Valley Bank, N.A.                     Director                70(b) & 70(d)
                              Charleston, West Virginia
</TABLE>

*Since such information rests peculiarly within the knowledge of the respective
officers and directors, the Registrant disclaims responsibility for the accuracy
and completeness of such information

PART III(a).  COMPENSATION OF OFFICERS AND DIRECTORS

1997 EXECUTIVE COMPENSATION PLAN

COMPENSATION COMMITTEE OF THE BOARD OF DIRECTORS

EXECUTIVE COMPENSATION REPORT TO THE STOCKHOLDERS

GENERAL - Through the Compensation Committee (the "Committee") of the
Corporation's Board of Directors, the Board of Directors has developed an
aggressive "PAY FOR PERFORMANCE" executive compensation philosophy and programs
to implement that philosophy. Effective since 1996, these programs combine to
form the basis of the total compensation plan for senior management of the
Corporation and its subsidiaries (the "Columbia Group"), which is designed to
focus management's attention on the Corporation's strategic business initiatives
and financial performance objectives. The Committee believes that the design and
execution of the executive compensation program implemented in 1996 continue to
be critical to the Corporation's future success by FOCUSING MANAGEMENT'S
ATTENTION on the competitive business environment through compensation awards
largely based on COLUMBIA VALUE ADDED ("CVA") FINANCIAL PERFORMANCE MEASURES and
SHAREHOLDER RETURN. CVA performance measures determine the real value of a
particular investment by the extent the return on that investment exceeds the
cost of the investment, including the cost of capital. COMPENSATION PHILOSOPHY -
The Board of Directors believes that total compensation is not only payment for
services rendered to the Columbia Group, but also a means to provide a strong
motivational vehicle for the achievement of key financial and strategic goals.
The Columbia Group provides executives with the opportunity to increase their
total compensation above base salary through annual and longer-term incentive
compensation programs. Goals and objectives within the executive compensation
program are established such that their achievement will result in added value
to the Columbia Group over appropriate periods of time. This is how compensation
is linked to corporate performance. To implement the pay for performance
philosophy that the Columbia Group instituted in 1996, its executive
compensation program is designed to:

         --       PLACE AT RISK significant amounts of the executives' total
                  compensation.

         --       Base greater amounts of the executives' total compensation
                  upon CREATING LONG-TERM VALUE FOR THE STOCKHOLDERS.

         --       TIE COMPENSATION MORE CLOSELY TO THE FORTUNES OF THE
                  STOCKHOLDERS through the use of a combination of cash and
                  STOCK-BASED INCENTIVE COMPENSATION PLANS.

         --       Emphasize the achievement of both short- and longer-term
                  internal VALUE ADDED PERFORMANCE MEASURES as well as
                  STOCKHOLDER RETURN EXPECTATIONS in relationship to peer
                  companies.


31
<PAGE>   33
         --       Provide total compensation rewards to executives in relation
                  to the overall financial performance of the Corporation.

As a general matter, the executive compensation program is designed to provide
base salary compensation and benefit levels that target the median of the
marketplace in similar-sized utility and industrial companies; maintain
equitable relationships among the compensation levels established for jobs
within the Columbia Group; provide for the recognition of performance delivered
year-to-year and over the long term; and ensure that appropriate controls are in
place for compensation to be fully earned. Because of the Columbia Group's size
and integrated nature, a number of well-known energy and general industry
executive compensation surveys are utilized to determine competitive
remuneration for executives. Most of the companies in the S&P Natural Gas
Utility Index, which comprises the peer group are included in one or more of
these surveys. However, no single authoritative executive compensation survey
currently covers all of the companies in the S&P Natural Gas Utility Index.

IMPLEMENTATION OF PHILOSOPHY - The Columbia Group's executive compensation
program is administered by the Committee. The Committee is composed of six
independent, non-employee Directors. As of December 31, 1997, the Columbia
Group's executive total compensation program consisted of the following:

         1.       Base Salary Program

         2.       Annual Incentive Compensation Plan

         3.       Long-Term Incentive Plan

         4.       Benefit Plans

         5.       Other Arrangements

1. BASE SALARY PROGRAM - A base salary is established for each executive
position based on a comparison of compensation levels of similar positions in
the external market. Competitive base salary levels are needed to attract and
retain competent executives. Based on the energy and general industry
compensation surveys referred to above, the base salary levels for the
approximately 180 individuals comprising the executive and key employee group
presently approximate the median for similar groups with corporations of similar
size and complexity. In keeping with the philosophy of placing more compensation
at risk and of targeting base salary at market levels, increases to base salary
generally are made only in cases of promotions or marketplace equity
adjustments, if individual performance warrants.

2. ANNUAL INCENTIVE COMPENSATION PLAN - This plan, which was amended, restated
and re-implemented effective January 1, 1996, provides the opportunity for
payment of cash awards to key employees for attainment of specific goals which
contribute directly to the present and future financial health of the Group.
Awards for 1997 performance, granted in 1998 after financial results for 1997
were final, are reflected in the Summary Compensation Table and in the Executive
Compensation Report subsection entitled "1997 Chief Executive Officer's Pay."
The award opportunities for 1997 ranged from zero to 75 percent of an
individual's annual base salary at target level performance, which depends upon
the achievement of CVA financial goals and the individual's level of
responsibility within the organization, along with an assessment of the
individual's ability to contribute directly to the financial performance of the
Columbia Group. Additional amounts can be awarded should financial performance
exceed the target level and, in certain circumstances, should the individual
exceed his or her personal performance goals.

3. LONG-TERM INCENTIVE PLAN - The executive compensation program also includes a
component to bring special attention to the important area of stockholder
return. The Long-Term Incentive Plan provides long-term incentives to officers
and other key employees of Columbia Group companies through the granting of
incentive stock options, non-qualified stock options, stock appreciation rights,
contingent stock awards, restricted stock awards, and/or any award in other
forms that the Committee may deem appropriate, consistent with the plan's
purpose. For option awards, generally the Corporation's Total Shareholder Return
performance (stock price appreciation plus dividend accruals) has been compared
to the peer group of companies included in the S&P Natural Gas Utility Index as
included elsewhere in this report. For 1997, the Committee provided awards of
options primarily when the Corporation's Total Shareholder Return exceeded the
median Total Shareholder Return of the companies which comprise this peer group
(excluding the Corporation). With respect to options, generally the amount of
awards to each participant has been based upon the evaluation of a key
employee's position, individual performance, and the Corporation's Total
Shareholder Return,


32
<PAGE>   34
though option awards to key employees may be made for reasons other than Total
Shareholder Return, subject to the discretion of the Committee. The purchase
price per share of stock deliverable upon the exercise of a non-qualified stock
option is 100 percent of the fair market value of the stock on the date of
grant. The price of options issued under the plan is credited with dividend
equivalents. Such credits may be made directly through a reduction in the
purchase price of stock subject to options. Alternatively, at the discretion of
the Committee, dividend equivalent credits may be provided indirectly, for
example through the establishment of an unsecured, unfunded bookkeeping
"account" that would track dividends declared on the stock subject to options
and that would be paid in cash to an optionee upon the exercise of an option or,
in certain circumstances, upon expiration of the option. Contingent or
restricted stock may also be awarded in very limited applications. The 1996
Long-Term Incentive Plan was approved by the stockholders of the Corporation on
April 26, 1996, and the plan became effective as of February 21, 1996. Awards
made in 1998 for 1997 performance are reflected in the Options Table elsewhere
in this report as well as the subsection of this report entitled "1997 Chief
Executive Officer's Pay."

4. BENEFIT PLANS - The Columbia Group maintains savings, retirement, medical,
dental, long-term disability, life insurance and other benefit plans of general
applicability. The Corporation has also established a Deferred Compensation
Plan, under which eligible key employees may defer base salary and annual
incentive compensation, and on which deferrals are credited with interest at
market rates. Federal regulations establish limits on the benefits which may be
paid under savings and retirement plans qualified under the Internal Revenue
Code ("IRC"). To maintain compliance, the Columbia Group caps benefits under the
qualified plans at the required levels. To provide comparable benefits to more
highly compensated employees, the Columbia Group has established a Thrift
Restoration Plan and a Pension Restoration Plan, both of which are non-qualified
and unfunded. However, the Pension Restoration Plan may be funded through a
trust arrangement at the election of the beneficiary once a threshold liability
of $100,000 has been reached. The Committee views these supplemental plans as
part of the total compensation program for executives.

5. OTHER ARRANGEMENTS - Mr. Richard, the Chairman, CEO, and President of the
Corporation, Mr. Schwolsky, Senior Vice President and Chief Legal Officer of the
Corporation, Ms. Abbott, Chief Executive Officer and President of Columbia Gas
Transmission Corporation and Chief Executive Officer of Columbia Gulf
Transmission Company, and Mr. Kaskel, Senior Vice President of the Columbia
Energy Group Service Corporation, were granted employment agreements upon hire.
For a more detailed description of the agreements, please see "Employment
Agreements" elsewhere in this report.

DEDUCTIBILITY OF COMPENSATION - The Committee has reviewed the potential impact
on the Columbia Group of Section 162(m) of the IRC, which imposes a limit on tax
deductions that the Columbia Group may claim for annual compensation in excess
of one million dollars paid to any of the CEO and the four other most highly
compensated executive officers. The Committee has determined that under current
compensation arrangements, the impact of Section 162(m) on the Columbia Group
would be limited and, therefore, has decided not to take any action at this time
to meet the requirements for a deduction for the Annual Incentive Compensation
Plan.

EVALUATION PROCESS - Each year, the Board of Directors of the Corporation
reviews and approves strategic business and financial plans for the Corporation
and each of its subsidiaries. In addition to various business strategies, these
plans include specific financial goals such as CVA or other measures to evaluate
whether stockholder value has increased. The goals set forth in these strategic
plans are the bases for evaluating the performance of the CEO of the Corporation
and other senior executives whose compensation falls under the direct purview of
the Committee. Attainment of meaningful strategic goals over reasonable time
periods increases value to stockholders, and the increased compensation
opportunities for executives are directly linked to the attainment of these
goals.

1997 CHIEF EXECUTIVE OFFICER'S PAY

BASE SALARY - When Mr. Richard was hired as CEO in 1995, the Corporation entered
into an employment agreement with Mr. Richard that provides a base salary of
$750,000 per year, subject to such increases as may be approved by the Board. As
noted above, in keeping with the philosophy of placing more compensation at risk
and of targeting base salary at market levels, increases to base salary for the
executive group generally are made only in cases of promotions or marketplace
equity adjustments. For those reasons, the Board approved no increases to Mr.
Richard's base salary in 1997.


33
<PAGE>   35
ANNUAL INCENTIVE COMPENSATION PLAN - On February 17, 1998, in accordance with
the Corporation's "pay for performance" compensation philosophy, the Committee
approved a cash award for Mr. Richard of $725,000 under the Annual Incentive
Compensation Plan in recognition of the Corporation's exceeding threshold CVA
goals and financial performance compared to peer companies, and of Mr. Richard's
achieving his individual performance goals for 1997.

LONG-TERM INCENTIVE PLAN - Mr. Richard's employment agreement provides for
contingent stock grants, including 5,000 shares on December 31, 1997, if he was
employed by the Corporation on that date. As Mr. Richard was employed by the
Corporation on December 31, 1997, he received a grant for the equivalent of
5,000 shares of common stock (2,340 shares were withheld to pay taxes on the
grant). On May 20, 1996, Mr. Richard received a grant of 29,785 shares of
restricted stock under his amended employment agreement. To provide an
additional incentive to Mr. Richard to continue his employment with the
Corporation, the amended employment agreement provides that only 20 percent of
such restricted stock vests each year, with the first 20 percent having vested
on January 2, 1997. On February 17, 1998, based on 1997 performance, the
Committee awarded Mr. Richard, under the Long-Term Incentive Plan, a grant of
non-qualified stock options to purchase 60,000 shares of common stock at a price
of $76.15625 per share, with one-third vesting on the first anniversary of
grant, one-third on the second anniversary of grant, and one-third on the third
anniversary of grant. The awards are included in the Options Table.

                         BY THE COMPENSATION COMMITTEE:

                  Gerald E. Mayo, Chairman            James P. Heffernan
                  Robert H. Beeby                     Malcolm T. Hopkins
                  Wilson K. Cadman                    James R. Thomas, II

EMPLOYMENT AGREEMENTS

As discussed in the Executive Compensation Report of the Compensation Committee
elsewhere in this report, in order to secure his services, the Corporation has
entered into an employment agreement with Mr. Richard for the position of
Chairman, Chief Executive Officer and President of the Corporation. In addition
to salary, bonus, awards of options, contingent stock and restricted stock and
other matters, Mr. Richard's amended employment agreement provides for severance
benefits to be paid to Mr. Richard in the event his employment is terminated
without cause. The severance benefits would include payment of Mr. Richard's
annual base salary, incentive compensation and fringe benefits for a period of
24 months. If Mr. Richard's employment is terminated due to a change in control
of the Corporation (as defined in the agreement), the period of severance
benefits is extended from 24 to 36 months, but the amount that may be paid to
Mr. Richard, which would constitute "parachute payments" under the IRC, will be
limited to the extent necessary to avoid the imposition of an excise tax under
the IRC.

The Corporation has also entered into an employment agreement with Mr. Schwolsky
to secure his services as Senior Vice President and Chief Legal Officer of the
Corporation. In addition to stock-based grants that were made in 1995, the
employment agreement with Mr. Schwolsky provides a base salary of $285,000 per
year, subject to such increases as may be approved by the Board. Besides being
eligible to participate in all incentive compensation plans and employee benefit
programs provided to other senior executives of the Group, upon retirement Mr.
Schwolsky may receive supplemental pension payments to make up the difference,
if any, between the Group's pension benefits and those Mr. Schwolsky would have
received from his previous employer. The employment agreement further provides
for severance benefits to be paid to Mr. Schwolsky in the event his employment
is terminated without cause. The severance benefits would include payment of Mr.
Schwolsky's annual base salary, incentive compensation and fringe benefits for a
period of 24 months. If Mr. Schwolsky's employment is terminated due to a change
in control of the Corporation (as defined in the agreement), the period of
severance benefits is extended from 24 to 36 months, but the amount that may be
paid to Mr. Schwolsky, which would constitute "parachute payments" under the
IRC, will be limited to the extent necessary to avoid the imposition of an
excise tax under the IRC.

The Corporation has entered into an employment agreement with Ms. Abbott to
secure her services as Chief Executive Officer of its transmission subsidiaries.
In addition to a grant of stock made in 1996, the employment agreement with Ms.
Abbott provides for a base salary of $325,000 per year, subject to such
increases as may be approved by the Board.


34
<PAGE>   36
The agreement also provides that Ms. Abbott is eligible to participate in all
employee benefit programs provided to other transmission company executives and
in all incentive compensation programs of the transmission companies appropriate
for her status. The employment agreement further provides for severance benefits
to be paid to Ms. Abbott in the event her employment is terminated without
cause. The severance benefits would include payment of Ms. Abbott's annual base
salary, incentive compensation and fringe benefits for a period of 24 months. If
Ms. Abbott's employment is terminated due to a change in control of the
Corporation (as defined in the agreement), the period of severance benefits is
extended from 24 to 36 months, but the amount that may be paid to Ms. Abbott,
which would constitute "parachute payments" under the IRC, will be limited to
the extent necessary to avoid the imposition of an excise tax under the IRC.

On March 31, 1997, the Corporation entered into an employment agreement with Mr.
Kaskel to secure his services as Senior Vice President of the Columbia Energy
Group Corporation. The agreement provides for a base salary of $280,000 per year
and a signing bonus of $75,000 payable at the end of the first year of
employment. The agreement also provides that Mr. Kaskel is eligible to
participate in benefits programs and all incentive compensation programs
provided to other company executives. In addition, Mr. Kaskel will participate
in a performance share award compensation feature under the Long-Term Incentive
Plan. This offers the opportunity for Mr. Kaskel to earn an award of up to
20,000 shares of the Corporation's common stock, depending on the level of
achievement at the end of the five-year performance period. The predetermined
performance measures to be used will be Total Operating Income and Total Return
on Invested Capital for all subsidiaries for which he has profit and loss
responsibility. No award is to be paid for performance falling below the
threshold level during the five-year performance period. An early payout of the
entire 20,000 shares could occur if, as measured at the end of any fiscal year
prior to the end of the five-year period, the stretch performance levels are
achieved for both measures. Should Mr. Kaskel's employment be terminated for any
reason prior to the end of the five-year performance period, an assessment will
be made of his actual achievements to date in relationship to the financial
measures governing the performance share feature, and he may receive pro-rate
award.


35
<PAGE>   37
OPTION/SAR GRANTS IN LAST FISCAL YEAR**

<TABLE>
<CAPTION>
       Individual Grants                                                                         Potential Realizable Value at
                                                                                                 Assumed Annual Rates of Stock Price
                                                                                                 Appreciation for Option Term
                                ---------       ---------        ---------       ---------       ---------        ---------
           (a)                     (b)            (c)               (d)            (e)              (f)              (g)
                                ---------       ---------        ---------       ---------       ---------        ---------
          Name                  Number of      % of Total        Exercise or    Expiration         5% ($)          10% ($)
                                Securities     Options/SARs      Base Price        Date
                                Underlying     Granted to         ($/Sh)
                               Options/SARs   Employees in
                                Granted #      Fiscal Year
                                ---------       ---------        ---------       ---------       ---------        ---------
<S>                            <C>            <C>                <C>            <C>              <C>              <C>
O. G. Richard III
Chairman, CEO & President          60,000             7.4%        76.15625         2/17/08       2,956,429*       7,800,113*
                                ---------       ---------        ---------       ---------       ---------        ---------
M. W. O'Donnell
Senior Vice President &
Chief Financial Officer            15,000             1.8         76.15625         2/17/08         739,107*       1,950,028*
                                ---------       ---------        ---------       ---------       ---------        ---------
P. M. Schwolsky
Senior Vice President &
Chief Legal Officer                15,000             1.8         76.15625         2/17/08         739,107*       1,950,028*
                                ---------       ---------        ---------       ---------       ---------        ---------
C. G. Abbott
CEO of Corporation's Gas
Transmission Segment               15,000             1.8         76.15625         2/17/08         739,107*       1,950,028*
                                ---------       ---------        ---------       ---------       ---------        ---------
R. R. Kaskel
Senior Vice President
Columbia Energy Group
Service Corporation                 7,000             0.9         76.15625         2/17/08         344,916*         910,013*
                                ---------       ---------        ---------       ---------       ---------        ---------
</TABLE>

*        Because dividend equivalents are associated with this award, the
         potential realizable value shall increase as dividends are paid on
         stock subject to options. In no event may dividend equivalents exceed
         the grant price less the par value of the underlying stock.

**       Granted as of February 17, 1998, for 1997 performance, the options vest
         one-third upon the first anniversary of grant, one-third on the second
         anniversary of grant, and the final third on the third anniversary of
         grant.


36
<PAGE>   38
               AGGREGATED OPTION/SAR EXERCISES IN LAST FISCAL YEAR
                         AND YEAR-END OPTION/SAR VALUES

<TABLE>
<CAPTION>
         (a)                            (b)                      (c)                    (d)                      (e)
                                  -----------------       -----------------       -----------------       -----------------
                                                                                 Number of Securities     Value of Unexercised
                                                                                Underlying Unexercised  In-the-Money Options/SARs
                                                                                   Options/SARs at           at Year-End ($)
                                                                                     Year-End
                                  -----------------       -----------------       -----------------       -----------------
                                     Number of              Value Realized          Exercisable/             Exercisable/
         Name                         Shares                    ($) *              Unexercisable           Unexercisable *
                                     Acquired
                                    on Exercise
                                  -----------------       -----------------       -----------------       -----------------
<S>                               <C>                     <C>                   <C>                     <C>
O. G. Richard III                               -0-       $               0          120,000/40,000       3,285,000/595,000
                                  -----------------       -----------------       -----------------       -----------------
M. W. O'Donnell                                 -0-       $               0           19,774/16,666         584,250/247,907
                                  -----------------       -----------------       -----------------       -----------------
P. M. Schwolsky                                 -0-       $               0           13,334/16,666         361,531/247,907
                                  -----------------       -----------------       -----------------       -----------------
C. G. Abbott                                    -0-       $               0            8,334/16,666         123,968/247,907
                                  -----------------       -----------------       -----------------       -----------------
R. R. Kaskel                                    -0-                     -0-                     0/0                     -0-
                                  -----------------       -----------------       -----------------       -----------------
All Other Officers (Part I)                     -0-                     -0-           28,145/33,335         481,020/234,015
                                  -----------------       -----------------       -----------------       -----------------
</TABLE>

*        Market value of underlying securities at exercise or FY-end, minus the
         exercise or base price.

             LONG-TERM INCENTIVE PLANS - AWARDS IN LAST FISCAL YEAR

<TABLE>
<CAPTION>
     (a)                         (b)                                 (c)
    NAME                 NUMBER OF SHARES, UNITS      PERFORMANCE OR OTHER PERIOD UNTIL
                           OR OTHER RIGHTS #                 MATURATION OR PAYOUT
<S>                      <C>                          <C> 
R. R. Kaskel                   20,000 (1)                          1997-2001
</TABLE>

(1) Granted to Mr. Kaskel under the Long-Term Incentive Plan pursuant to his
employment agreement. Mr. Kaskel may earn up to 20,000 shares of the
Corporation's common stock, depending on achievement of Total Operating Income
and Total Return on Invested Capital for all subsidiaries for which he has
profit and loss responsibility. No award is paid for performance below the
threshold level. Payment may be accelerated if stretch performance levels are
achieved.


37
<PAGE>   39
The compensation for services in all capacities payable to or earned by the
executive officers of the Corporation and its subsidiaries during the year 1997
was as follows:

<TABLE>
<CAPTION>
                                                                  Long-Term Compensation
                              ANNUAL COMPENSATION             ----------------------------          Payouts
                    --------------------------------------        Awards                           ---------
                                                                -----------                                             
     (a)               (b)           (c)              (d)           (f)           (g)                 (h)           (i)
Name and                                                                       Securities
Principal                                                        Restricted    Underlying            LTIP        All Other
Position              Year         Salary            Bonus      Stock Awards    Options -           Payouts      Comp. (1)
                                                                                  SARs
                                     ($)              ($)           ($)           (#)                 ($)           ($)
                    ---------     ---------        ---------     ---------     ---------           ---------     ---------
<S>                 <C>           <C>              <C>           <C>           <C>                 <C>           <C>       
O.G. RICHARD,            1997       787,500          725,000           -0-        60,000(5)              -0-        26,770(13)
III
Chairman, CEO            1996       778,125          710,000     1,459,465(9)    160,000(6)(7)           -0-       746,596(8)(13)
& President              1995       528,125(2)       262,500       737,500(10)       -0-                 -0-        75,673(14)
                    ---------     ---------        ---------     ---------     ---------           ---------     ---------
M. W. O'DONNELL
Senior Vice
President &              1997       325,000          230,000           -0-        15,000(5)              -0-        19,500
Chief
Financial                1996       322,575          210,000           -0-        25,000(6)              -0-        84,233(13)
Officer                  1995       310,150          247,000           -0-         5,000(3)              -0-        13,879
                    ---------     ---------        ---------     ---------     ---------           ---------     ---------
P. M. SCHWOLSKY
Senior Vice              1997       325,000          241,000           -0-        15,000(5)              -0-        13,206
President &              1996       321,250          234,000           -0-        25,000(6)              -0-       130,804(13)
Chief Legal
Officer                  1995       164,091(2)       115,000        91,400(12)     5,000(4)              -0-        13,503
                    ---------     ---------        ---------     ---------     ---------           ---------     ---------
C. G. ABBOTT             1997       325,000          275,000           -0-        15,000(5)              -0-        11,026
CEO of
Corporation's            1996       310,870(2)       234,000        73,219(11)    25,000(6)              -0-        88,689(13)
Gas
Transmission             1995           N/A
Segment
                    ---------     ---------        ---------     ---------     ---------           ---------     ---------
R. R. KASKEL             1997       210,000(2)       155,000           -0-         7,000(5)              -0-        84,233(15)
Senior Vice
President,
Columbia
Energy Group             1996           N/A
Service
Corporation              1995           N/A
                    ---------     ---------        ---------     ---------     ---------           ---------     ---------
</TABLE>


                                       38
<PAGE>   40
(1)      Reflects employer contributions, if any, to the Employees' Thrift Plan
         of Columbia Energy Group, which is qualified under the Internal Revenue
         Code, and the Thrift Restoration Plan, a nonqualified plan. Mr. Kaskel
         was not eligible to participate in either plan as of December 31, 1997.
         The contributions to all officers, namely those listed in Part I,
         totaled $568,500. The compensation to all officers as a group, namely
         those listed in Part I, totaled $22,653,000.

(2)      Partial year salary.

(3)      Options to purchase shares granted to top 31 executives on May 17,
         1995, at a price of $28.99 per share, which vested 100% six months from
         the date of grant, on November 17, 1995.

(4)      Options to purchase shares granted to Mr. Schwolsky upon his employment
         on June 5, 1995, at a price of $31.05 per share, which vested 100% six
         months from the date of grant, on December 5, 1995.

(5)      Options to purchase shares granted to executive group on February 17,
         1998 for 1997 performance at a price of $76.15625 per share, which
         options vest one-third upon the first anniversary of grant; one-third
         upon the second anniversary; and one-third upon the third anniversary.

(6)      Options to purchase shares granted to executive group on February 18,
         1997 for 1996 performance at a price of $63.6875 per share, which
         options vest one-third upon grant, exercisable in six months; one-third
         upon the first anniversary of grant; and one-third upon the second
         anniversary.

(7)      Pursuant to Mr. Richard's employment agreement dated March 15, 1995,
         and amended January 17, 1996, on May 20, 1996, Mr. Richard was granted
         a nonqualified stock option for 100,000 shares of common stock, 50,000
         of which were vested on November 28, 1996, and the remaining 50,000
         which were vested on November 28, 1997.

(8)      Pursuant to Mr. Richard's amended employment agreement, on May 21,
         1996, Mr. Richard received a $481,250 cash payment, less taxes,
         representing the excess of the grant price of the options for 100,000
         shares of common stock issued the previous date over the fair market
         value of the shares on the date the options would have been issued had
         the Corporation been able to issue the options following its discharge
         from bankruptcy. The common stock increased in value during this period
         from $43.875 to $48.6875 per share.

(9)      Pursuant to Mr. Richard's amended employment agreement, on May 20,
         1996, Mr. Richard was granted a restricted stock award for 29,785
         shares of common stock at a value of $1,459,465, as based on the
         closing price of $49.00 per share on May 20, 1996. The shares vest
         annually in equal installments commencing January 2, 1997. Mr. Richard
         receives dividends on the restricted stock as dividends are declared on
         shares of common stock. At December 31, 1997, Mr. Richard held 23,828
         shares of restricted stock, at an aggregate value of $1,871,987.

(10)     Pursuant to Mr. Richard's employment agreement, Mr. Richard was granted
         a contingent stock award for 25,000 shares of common stock. The 25,000
         shares vested as follows: 10,000 on May 1, 1995, and 5,000 per year on,
         and contingent upon his continued employment through, December 31,
         1995, December 31, 1996, and December 31, 1997, respectively.

(11)     Pursuant to Ms. Abbott's employment agreement dated January 17, 1996,
         on January 17, 1996, Ms. Abbott was granted a contingent stock award
         for 1,500 shares of common stock, which vested on May 17, 1996.

(12)     On June 5, 1995, Mr. Schwolsky was granted a contingent stock award for
         2,500 shares of common stock which vested on September 5, 1995.

(13)     Includes transfer expenses associated with the move of the corporate
         office from Delaware to Northern Virginia totalling $235,738 for Mr.
         Richard, $66,090 for Mr. O'Donnell, $126,304 for Mr. Schwolsky, and
         $87,014 for Ms. Abbott.

(14)     Reflects transfer expenses and compensation for benefits forfeited upon
         termination of prior employment.

(15)     Reflects transfer expenses.

RETIREMENT INCOME PLAN

A noncontributory defined benefit pension plan is maintained for all employees
of the Corporation's participating subsidiaries who are at least 21 years of
age. The annual benefit under the pension plan is based upon final average
annual compensation and years of credited service. Final average annual
compensation is calculated using base compensation (shown in the "Summary
Compensation Table" as "Salary") paid to the employee for the highest 36 months
of the last 60 months prior to retirement.

Estimated annual benefits payable upon retirement are as follows with respect to
the specified remuneration and years of credited service.


39
<PAGE>   41
ESTIMATED ANNUAL BENEFITS AS OF JANUARY 1, 1998, FROM RETIREMENT INCOME PLAN (1)

<TABLE>
<CAPTION>
                                       Representative Years of Credited Service (2)
Final Average            15            20            25            30            35            40
Annual Compensation      $             $             $             $             $             $
<S>                   <C>           <C>           <C>          <C>           <C>           <C>    
        250,000        54,455        72,606        90,758       108,909       121,409       121,567
        300,000        65,705        87,606       109,508       131,409       138,909       146,409
        400,000        88,205       117,606       147,008       176,409       186,409       196,409
        500,000       110,705       147,606       184,508       221,409       233,909       246,409
        600,000       133,205       177,606       222,008       266,409       281,409       296,409
        800,000       178,205       237,606       297,008       356,409       376,409       396,409
      1,000,000       223,205       297,606       372,008       446,409       471,409       496,409
      1,200,000       268,205       357,606       447,008       536,409       566,409       596,409
</TABLE>

(1)      Estimates are based upon a straight-life annuity and the assumptions
         that (a) the Corporation's present retirement plan will be maintained
         and (b) retirement will not occur before age 65. These benefits are not
         subject to deduction for social security or other charges. Should an
         annual benefit exceed limitations imposed by federal law, the excess
         will be paid by the participating subsidiary as a supplemental pension
         under the Pension Restoration Plan. If the supplemental pension
         liability exceeds $100,000, then this liability may be funded through a
         trust arrangement at the option of the individual. The liabilities of
         Messrs. Richard, Schwolsky and O'Donnell have reached $100,000, but to
         date they have not elected to fund their accrued pension. The
         liabilities of Ms. Abbott and Mr. Kaskel had not yet reached $100,000,
         so no contributions were made in 1997 on their behalf. Such
         supplemental pensions are not available to these executives until
         retirement or termination of employment.

(2)      As of January 1, 1998, the credited years of service for retirement
         benefits for the individuals named in the Summary Compensation Table
         were as follows: Mr. Richard, 6 years; Mr. O'Donnell, 27 years; Mr.
         Schwolsky, 6 years; Ms. Abbott, 1 year; and Mr. Kaskel, 0 years.

PERFORMANCE TABLE

The following tables demonstrates a five-year comparison of cumulative total
returns for the Corporation, the S&P 500, and the S&P Natural Gas Utility Index.
FIVE-YEAR COMPARISON OF CUMULATIVE TOTAL RETURN(A)

<TABLE>
<CAPTION>
                               1992         1993         1994         1995         1996         1997
                                $            $            $            $            $            $
                              ------       ------       ------       ------       ------       ------
<S>                           <C>          <C>          <C>          <C>          <C>          <C>   
Columbia Energy
(formerly Columbia Gas)          100       116.99       122.88       229.41       336.52       421.23
                              ------       ------       ------       ------       ------       ------
S&P 500 Index                    100       110.08       111.53       153.45       188.68       251.63
                              ------       ------       ------       ------       ------       ------
S&P Natural Gas
Utility Index                    100       118.73       113.26       160.20       212.89       251.18
                              ------       ------       ------       ------       ------       ------
</TABLE>

(A)      Assumes $100 invested on December 31, 1992 and reinvestment of
         dividends.


40
<PAGE>   42
                        STANDARD DIRECTORS' COMPENSATION

1997 Directors' Compensation for Board and Committee Meetings:

<TABLE>
<CAPTION>
                                                Retainer     Meeting Fee  Chairman's Fee
                                                $            $            $
                                                ------       ------       ------
<S>                                             <C>          <C>          <C>
Board                                           27,250        1,250           --
                                                ------       ------       ------
Audit                                               --        1,000        3,000
                                                ------       ------       ------
Compensation                                        --        1,000        3,000
                                                ------       ------       ------
Executive                                        6,000          800           --
                                                ------       ------       ------
Finance                                             --        1,000        3,000
                                                ------       ------       ------
Corporate Governance                                --        1,000        3,000
                                                ------       ------       ------
</TABLE>

The nonemployee Directors are also eligible to receive nonqualified stock
options pursuant to the Corporation's Long-Term Incentive Plan. If the
Corporation's Total Shareholder Return performance, compared with its peers, is
at the third quartile, then nonemployee Directors receive options for 3,000
shares of common stock; at the fourth quartile, options for 6,000 shares. For
1997 performance, the Directors will receive options for 3,000 shares, granted
and priced as of March 31, 1998. See the section entitled "1997 Executive
Compensation Plan" for a discussion of the terms of the option grants.

No officer received any compensation for services as a Director while also
serving as an officer of the Corporation.

The Corporation offers medical coverage to nonemployee Directors and pays the
premium associated with their participation. The Corporation also reimburses
them for the cost of Medicare Part B, if applicable. In addition, nonemployee
Directors may elect to defer compensation for distribution at a later date.
Deferred amounts will accrue interest at the prime rate and may be paid in a
lump sum or in annual installments over ten years, or may be deferred into the
Phantom Stock Plan for Outside Directors. Deferred amounts will be automatically
paid in a lump sum following certain specified changes in control of the
Corporation.

Following its approval by the stockholders at the 1996 Annual Meeting, the
Phantom Stock Plan for Outside Directors was established. All of the Directors
except two (one of whom has since retired) elected to participate in the plan in
lieu of participating in the Retirement Plan for Outside Directors.
Participating Directors received phantom shares of equivalent actuarial value
under the Phantom Stock Plan for Outside Directors. The Retirement Plan for
Outside Directors is not available for nonemployee Directors assuming office
after April 1996; rather, they will participate in the Phantom Stock Plan for
Outside Directors, under which they receive 3,000 phantom shares upon being
elected to the Board. Payment of cash benefits will commence upon termination of
Board service or upon specified changes in control of the Corporation.

For the Director(s) remaining in the Retirement Plan, each nonemployee Director
with a minimum of five years' service on the Board who retires after attaining
age 65 or becoming disabled could receive annual retirement payments equal to
the amount of the annual retainer for Board service at the time of retirement.
Payments under the Retirement Plan will cease at the death of the Director
unless the Director elected an actuarial equivalent option or, if death occurs
before retirement but after eligibility is established, at the death of the
surviving spouse. In the event of certain specified changes in control of the
Corporation, a Director (regardless of years of service on the Board) could
elect a lump sum payment equal to the present value of the retainer at the time
of the election times the number of years of Board service, with a minimum of
ten years.

The director's compensation amounted to $695,000.


41
<PAGE>   43
Part III(b). SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS, DIRECTORS AND
MANAGEMENT 

The following table sets forth the beneficial ownership of common
stock by stockholders, if any, who own greater than 5 percent of the outstanding
shares as of January 31, 1998, by Directors, by each of the executive officers
whose compensation is disclosed in the Summary Compensation Table, and by all
Directors and such executive officers as a group. Except as otherwise noted, the
persons named in the table below have sole voting and investment power with
respect to all shares shown as beneficially owned by them.

<TABLE>
<CAPTION>
   (1)               (2)                        (3)                                                (4)
                                                =========================================================
Title of     Name and Address                   Amount and Nature of                              Percent
 Class                                          Beneficial Ownership **                             of
                                                                                                   Class
                                                =========================================================
                                                Shared   Sole     Shared      Sole
                                                Voting  Voting  Investment  Investment  Total
                                                Power   Power     Power       Power     Owned
- ----------   ---------------------------------  ------  ------  ----------  ----------  -----     --------
<S>          <C>                                <C>     <C>     <C>         <C>         <C>       <C>
5% HOLDERS
N/A          N/A                                                                                    -0-
==========   =================================  =============================================     ========
DIRECTORS
Common       R. F. Albosta                                           3,000                            *
- ----------   ---------------------------------  ---------------------------------------------     --------
Common       R. H. Beeby                                             3,000(1)                         *
- ----------   ---------------------------------  ---------------------------------------------     --------
Common       W. K. Cadman                                            3,000                            *
- ----------   ---------------------------------  ---------------------------------------------     --------
Common       J. P. Heffernan                                         5,000                            *
- ----------   ---------------------------------  ---------------------------------------------     --------
Common       K. L. Hendricks                                           -0-                            *
- ----------   ---------------------------------  ---------------------------------------------     --------
Common       D. P. Hodel                                             3,000                            *
- ----------   ---------------------------------  ---------------------------------------------     --------
Common       M. T. Hopkins                                      7,525.4054                            *
- ----------   ---------------------------------  ---------------------------------------------     --------
Common       J. B. Johnston                                            -0-                            *
- ----------   ---------------------------------  ---------------------------------------------     --------
Common       M. Jozoff                                               3,000                            *
- ----------   ---------------------------------  ---------------------------------------------     --------
Common       W. E. Lavery                                            3,100                            *
- ----------   ---------------------------------  ---------------------------------------------     --------
Common       G. E. Mayo                                              4,000                            *
- ----------   ---------------------------------  ---------------------------------------------     --------
Common       D. E. Olesen                                       3,006.8159                            *
- ----------   ---------------------------------  ---------------------------------------------     --------
Common       O. G. Richard, III                                    164,650(2)                         *
- ----------   ---------------------------------  ---------------------------------------------     --------
Common       J. R. Thomas, II                                        3,500                            *
- ----------   ---------------------------------  ---------------------------------------------     --------
Common       W. R. Wilson                                            8,000                            *
==========   =================================  =============================================     ========
OFFICERS                                                                                              
Common       C. G. Abbott                                       10,394.552(3)                         *
- ----------   ---------------------------------  ---------------------------------------------     --------
Common       R. R. Kaskel                                              -0-                            *
- ----------   ---------------------------------  ---------------------------------------------     --------
Common       M. W. O'Donnell                                    23,902,356(4)                         *
- ----------   ---------------------------------  ---------------------------------------------     --------
Common       P. M. Schwolsky                                    15,938,926(5)                         *
- ----------   ---------------------------------  ---------------------------------------------     --------
             All Executive Officers &                                                                 
Common       Directors (19 persons) as a Group                  264,018.05(6)                         *
==========   =================================  =============================================     ========
</TABLE>

*        Aggregate stock ownership (including exercisable options) as a
         percentage of class is less than 1 percent.

**       Includes an allocation of shares held by the Trustee of the Employees'
         Thrift Plan of Columbia Energy Group for the executive officers. Also
         includes currently exercisable options. All holdings of the Directors,
         except Messrs. Johnston and Richard and Ms. Hendricks, include
         beneficial ownership of 2,000 shares which may be acquired pursuant to
         stock options awarded under Long-Term Incentive Plan (LTIP).


42
<PAGE>   44
(1)      Includes beneficial ownership of 1,000 shares with shared investment
         power.

(2)      Includes beneficial ownership of 120,000 shares which may be acquired
         pursuant to stock options awarded under LTIP.

(3)      Includes beneficial ownership of 200 shares with shared voting and
         investment power. Includes beneficial ownership of 8,334 shares which
         may be acquired pursuant to stock options awarded under LTIP.

(4)      Includes beneficial ownership of 19,774 shares which may be acquired
         pursuant to stock options awarded under LTIP.

(5)      Includes beneficial ownership of 13,334 shares which may be acquired
         pursuant to stock options awarded under LTIP.

(6)      Includes beneficial ownership of 185,442 shares which may be acquired
         pursuant to stock options awarded under LTIP.


43
<PAGE>   45
Part III(c). Contracts and transactions.

         None.

Part III(d). Indebtedness.

         None.

Part III(e). Participation in bonus and profit sharing arrangement.

         See Item 6 Part III(a) above.

Part III(f). Directors and officers rights to indemnity.

Provisions for indemnification of directors and officers are included in the
Certificate of Incorporation or By-Laws in accordance with applicable laws.

DIRECTORS AND OFFICERS' LIABILITY INSURANCE - Insurance is purchased for all of
the Registrant's directors and officers, plus the directors and officers of the
subsidiary companies. This insurance also indemnifies the Registrant and its
subsidiary companies against any amounts paid by them as allowed by Corporate
law or By-Laws of the Registrant to covered directors and officers. The annual
cost thereof to the Registrant and its subsidiary companies was $1,133,870.


44
<PAGE>   46
ITEM 7. CONTRIBUTIONS AND PUBLIC RELATIONS


Part I.  Expenditures for any political party, candidate for public office or
         holder of such office, or any committee or agent therefor.

         None.

Part II. Expenditures for any citizens group or public relations counsel.

                               Calendar Year 1997

<TABLE>
<CAPTION>
       Name of Company and Name
         or Number of Recipients
                 or Beneficiaries      Purpose        Accounts Charged           Amount
                                                                                  ($)
- ---------------------------------      -------        ----------------           ------
<S>                                    <C>            <C>                        <C>
CKY
  2 Recipients                           B            Admin & General              2,870

COH
  43 Various Chambers of Commerce        B            Admin & General             15,920
  Ohio Chamber of Commerce               B            Admin & General             21,280
  Better Business Bureaus                B            Admin & General              1,760

CPA
  7 Recipients                           B            Admin & General              9,760

COS
  18  Recipients                         B            Admin & General             19,634

TCO
  6 Recipients                           A            Admin & General             12,316

CNR
  Keep Ohio Working                      A            Admin & General              5,000

CPC
  23 Recipients                          B            Admin & General              4,206
</TABLE>

A - Information and Education

B - Economic Development


45
<PAGE>   47
ITEM 8. SERVICE, SALES AND CONSTRUCTION CONTRACTS

Part I. Intercompany Contracts.

                               Calendar Year 1997


                        CONFIDENTIAL TREATMENT REQUESTED


46
<PAGE>   48

Part II. System contracts to purchase goods or services from any affiliate
         (other than a System company) or a company in which any officer or
         director is a partner or owns 5% or more of any class of equity
         securities.


                        CONFIDENTIAL TREATMENT REQUESTED


47
<PAGE>   49
Part III.  System contracts with others on a continuing basis for management,
           supervisory, or financial advisory review.

           (a)    Due to the Chapter 11 Filing, the Registrant and TCO have
                  contracted with various firms to provide services for all
                  parties involved in the bankruptcy proceedings. On November
                  28, 1995 the Registrant and TCO emerged from bankruptcy after
                  filing separate petitions for protection under Chapter 11 of
                  the Federal Bankruptcy Code on July 31, 1991.

             The table below details the relevant firms contracted:

                               Calendar Year 1997

<TABLE>
<CAPTION>
                                                                                                           Date of
          Name                           Scope of Services                     Compensation              Court Approval
<S>                                  <C>                                       <C>                       <C>
Lehman Brothers Inc.                 Financial Advisor and                       $148,509                 1/29/92
                                       Investment Banker to the
                                       Official Committee of
                                       Unsecured Creditors to TCO.

Salomon Brothers Inc.                Financial Advisor and                       $138,323                 10/22/91
                                       Investment Banker to TCO.
</TABLE>


48
<PAGE>   50
         (b)      The Registrant's distribution companies contracted with the
                  following organizations to provide various professional
                  services.

<TABLE>
<CAPTION>
          Name              Scope of Services                     Compensation
<S>                     <C>                                       <C>
Ciuni & Panichi         Governmental Affairs                           $4,400
                        to COH

Farmer & Humble         Tax Consultant to                              $3,600
                        CKY

Hart & Assoc.           Communications                                $22,000
                        Consultant to COH

Kingwood Consulting     Communications                               $165,000
                        Consultant to COH

Thomas Green &          Governmental Affairs                         $116,649
Assoc.                  to COH
</TABLE>

ITEM 9.  WHOLESALE GENERATORS AND FOREIGN UTILITY COMPANIES

         None.


49
<PAGE>   51
ITEM 10. FINANCIAL STATEMENTS AND EXHIBITS

         Financial Statements included in Form U5S:
         CONSOLIDATING BALANCE SHEET AS OF DECEMBER 31, 1997

         Columbia Energy Group and Subsidiaries ....................    F-1
         Columbia Electric Corp. and Subsidiaries ..................    F-1A
         Tristar Capital Corporation and Subsidiary ................    F-1B
         Columbia LNG Corporation and Subsidiary ...................    F-1C
         Columbia Energy Services Corporation and Subsidiaries .....    F-1D
         Columbia Network Services Corporation and Subsidiary.......    F-1E
         Columbia Natural Resources, Inc. and Subsidiary............    F-1F
         Alamco, Inc. and Subsidiaries..............................    F-1G

         SUMMARY OF CONSOLIDATING BALANCE SHEET ENTRIES AS OF
           DECEMBER 31, 1997

         Columbia Energy Group and Subsidiaries.....................    F-2
         Columbia Electric Corp. and Subsidiaries ..................    F-2A
         Tristar Capital Corporation and Subsidiary ................    F-2B
         Columbia LNG Corporation and Subsidiary....................    F-2C
         Columbia Energy Services Corporation and Subsidiaries .....    F-2D
         Columbia Network Services Corporation and Subsidiary.......    F-2E
         Columbia Natural Resources, Inc. and Subsidiary............    F-2F
         Alamco, Inc. and Subsidiaries..............................    F-2G

         CONSOLIDATING STATEMENT OF INCOME FOR THE YEAR ENDED
           DECEMBER 31, 1997

         Columbia Energy Group and Subsidiaries.....................    F-3
         Columbia Electric Corp. and Subsidiaries...................    F-3A
         Tristar Capital Corporation and Subsidiary.................    F-3B
         Columbia LNG Corporation and Subsidiary ...................    F-3C
         Columbia Energy Services Corporation and Subsidiaries .....    F-3D
         Columbia Network Services Corporation and Subsidiary.......    F-3E
         Columbia Natural Resources, Inc. and Subsidiary............    F-3F
         Alamco, Inc. and Subsidiaries..............................    F-3G

         SUMMARY OF CONSOLIDATING STATEMENT OF INCOME ENTRIES FOR
           THE YEAR ENDED DECEMBER 31, 1997

         Columbia Energy Group and Subsidiaries.....................    F-4
         Columbia Electric Corp. and Subsidiaries...................    F-4A
         Tristar Capital Corporation and Subsidiary ................    F-4B
         Columbia LNG Corporation and Subsidiary....................    F-4C
         Columbia Energy Services Corporation and Subsidiaries......    F-4D


50
<PAGE>   52
         Columbia Network Services Corporation and Subsidiary.......    F-4E
         Columbia Natural Resources, Inc. and Subsidiary............    F-4F
         Alamco, Inc. and Subsidiaries..............................    F-4G

         CONSOLIDATING STATEMENT OF COMMON STOCK EQUITY FOR THE
           YEAR ENDED DECEMBER 31, 1997

         Columbia Energy Group and Subsidiaries ....................    F-5
         Columbia Electric Corp. and Subsidiaries...................    F-5A
         Tristar Capital Corporation and Subsidiary.................    F-5B
         Columbia LNG Corporation and Subsidiary ...................    F-5C
         Columbia Energy Services Corporation and Subsidiaries .....    F-5D
         Columbia Network Services Corporation and Subsidiary.......    F-5E
         Columbia Natural Resources, Inc. and Subsidiary............    F-5F
         Alamco, Inc. and Subsidiaries..............................    F-5G

         CONSOLIDATING STATEMENT OF CASH FLOWS
           FOR THE YEAR ENDED DECEMBER 31, 1997

         Columbia Energy Group and Subsidiaries.....................    F-6
         Columbia Electric Corp. and Subsidiaries...................    F-6A
         Tristar Capital Corporation and Subsidiary.................    F-6B
         Columbia LNG Corporation and Subsidiary....................    F-6C
         Columbia Energy Services Corporation and Subsidiaries .....    F-6D
         Columbia Network Services Corporation and Subsidiary.......    F-6E
         Columbia Natural Resources, Inc. and Subsidiary............    F-6F
         Alamco, Inc. and Subsidiaries..............................    F-6G


51
<PAGE>   53
F-1 (1 of 10)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES

               Consolidating Balance Sheet as of December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                   F-1          F-1         F-1       F-1                 Consolidating
                                                  Page 2       Page 3      Page 4    Page 5   Combined      Entries     Consolidated
                                                ----------   ----------   --------   ------   -----------   ----------   ----------
<S>                                              <C>          <C>          <C>        <C>      <C>          <C>           <C>
                  ASSETS
Property, Plant and Equipment
  Gas utility and other plant, at
    original cost ............................                                                                            7,368,923
  Accumulated depreciation and depletion .....                                                                           (3,481,545)
                                                                                                                         ----------
  Net Gas Utility and Other Plant ............                                                                            3,887,378
                                                                                                                         ----------

  Gas and oil producing properties, full
  cost method ................................                                                                              660,264
  Accumulated depletion ......................                                                                             (195,995)
                                                                                                                         ----------
  Net Gas and Oil Producing Properties .......                                                                              464,269
                                                                                                                         ----------

Net Property, Plant, and Equipment ...........                                                                            4,351,647
                                                                                                                         ----------

Investments and Other Assets
  Accounts receivable - noncurrent ...........                                                                                1,624
  Unconsolidated affiliates ..................                                                                               74,092
  Assets held for sale .......................                                                                                1,540
  Other ......................................                                                                                7,955
                                                                                                                         ----------
Total Investments and Other Assets ...........                                                                               85,211
                                                                                                                         ----------

Investments in Subsidiaries
  Capital stock ..............................                                                                                 --
  Equity in undistributed earnings of
   subsidiaries ..............................                                                                                 --
  Notes receivable ...........................                                                                                 --
  Other investments ..........................                                                                                 --
                                                                                                                         ----------
Total Investments in Subsidiaries ............                                                                                 --
                                                                                                                         ----------

Current Assets
  Cash and temporary cash investments ........                                                                               28,738
  Accounts receivable, net
    Customers ................................                                                                              815,784
    Intercompany .............................                                                                                 --
    Other ....................................                                                                               52,725
  Income tax refunds .........................                                                                                 --
  Gas inventory ..............................                                                                              226,800
  Other inventories, at average cost .........                                                                               35,605
  Prepayments ................................                                                                              107,710
  Regulatory assets ..........................                                                                               64,540
  Underrecovered gas costs ...................                                                                               41,438
  Prepaid property tax .......................                                                                               80,831
  Exchange gas receivable ....................                                                                              189,036
  Other ......................................                                                                               64,463
                                                                                                                         ----------
Total Current Assets .........................                                                                            1,707,670
                                                                                                                         ----------

Deferred Charges .............................                                                                               66,938
Long-term regulatory assets ..................                                                                              400,873
                                                                                                                         ----------

TOTAL ASSETS .................................                                                                            6,612,339
                                                                                                                         ==========
</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED

<PAGE>   54
F-1 (2 of 10)
                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES

               Consolidating Balance Sheet as of December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)
<TABLE>
<CAPTION>
                                                                                                                         F-1 Page 2
                                                        CNR(a)         TCO            CGT         CLG(a)      CKY          Total
                                                       --------     ----------     ----------     ------    --------     ----------
<S>                                                     <C>          <C>           <C>            <C>       <C>          <C>
                        ASSETS
Property, Plant and Equipment
  Gas utility and other plant, at original cost ....                 3,385,834      1,245,331                192,162
  Accumulated depreciation and depletion ...........                (1,383,679)    (1,041,601)               (76,967)
                                                                    ----------     ----------               --------
  Net Gas Utility and Other Plant ..................                 2,002,155        203,730                115,195
                                                                    ----------     ----------               --------

  Gas and oil producing properties, full cost method                      --             --                     --
  Accumulated depletion ............................                      --             --                     --
                                                                    ----------     ----------               --------
  Net Gas and Oil Producing Properties .............                      --             --                     --
                                                                    ----------     ----------               --------

Net Property, Plant, and Equipment .................                 2,002,155        203,730                115,195
                                                                    ----------     ----------               --------

Investments and Other Assets
  Accounts receivable - noncurrent .................                    22,731           --                     --
  Unconsolidated affiliates ........................                     6,476         24,705                   --
  Assets held for sale .............................                      --             --                     --
  Other ............................................                      --             --                     --
                                                                    ----------     ----------               --------
Total Investments and Other Assets .................                    29,207         24,705                   --
                                                                    ----------     ----------               --------

Investments in Subsidiaries
  Capital stock ....................................                      --             --                     --
  Equity in undistributed earnings of
   subsidiaries ....................................                      --             --                     --
  Notes receivable .................................                      --             --                     --
  Other investments ................................                      --             --                     --
                                                                    ----------     ----------               --------
Total Investments in Subsidiaries ..................                      --             --                     --
                                                                    ----------     ----------               --------

Current Assets
  Cash and temporary cash investments ..............                     1,384            142                    528
  Accounts receivable, net
    Customers ......................................                    44,584          8,093                 16,180
    Intercompany ...................................                    70,810          6,639                     98
    Other ..........................................                    20,590          3,627                    506
  Income tax refunds ...............................                      --             --                     --
  Gas inventory ....................................                      --             --                   19,556
  Other inventories, at average cost ...............                    15,732          5,422                     86
  Prepayments ......................................                     3,597          1,734                    241
  Regulatory assets ................................                    24,891          3,486                    530
  Underrecovered gas costs .........................                      --             --                     --
  Prepaid property tax .............................                      --             --                     --
  Exchange gas receivable ..........................                      --             --                     --
  Other ............................................                    94,094         24,706                 19,038
                                                                    ----------     ----------               --------
Total Current Assets ...............................                   275,682         53,849                 56,763
                                                                    ----------     ----------               --------

Deferred Charges ...................................                     6,548            606                    950
Long-term regulatory assets ........................                   180,544         10,521                  7,905
                                                                    ----------     ----------               --------

TOTAL ASSETS .......................................                 2,494,136        293,411                180,813
                                                                    ==========     ==========               ========
</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   55
F-1 (3 of 10)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES

               Consolidating Balance Sheet as of December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                                         F-1 Page 3
                                                          COH           CMD         CPA          COS          CC           Total
                                                       ----------     -------     --------     --------     --------     ----------
                 ASSETS
<S>                                                     <C>            <C>         <C>          <C>         <C>          <C>
Property, Plant and Equipment
  Gas utility and other plant, at original cost ....    1,322,625      71,520      559,543      349,974     
  Accumulated depreciation and depletion ...........     (566,699)    (28,067)    (178,022)     (75,782)
                                                       ----------     -------     --------     --------
  Net Gas Utility and Other Plant ..................      755,926      43,453      381,521      274,192
                                                       ----------     -------     --------     --------

  Gas and oil producing properties, full cost method         --          --           --           --
  Accumulated depletion ............................         --          --           --           --
                                                       ----------     -------     --------     --------
  Net Gas and Oil Producing Properties .............         --          --           --           --
                                                       ----------     -------     --------     --------

Net Property, Plant, and Equipment .................      755,926      43,453      381,521      274,192
                                                       ----------     -------     --------     --------

Investments and Other Assets
  Accounts receivable - noncurrent .................         --          --           --           --
  Unconsolidated affiliates ........................         --          --           --           --
  Assets held for sale .............................         --          --           --           --
  Other ............................................         --          --           --           --
                                                       ----------     -------     --------     --------
Total Investments and Other Assets .................         --          --           --           --
                                                       ----------     -------     --------     --------

Investments in Subsidiaries
  Capital stock ....................................         --          --            --          --
  Equity in undistributed earnings of
   subsidiaries ....................................         --          --            --          --
  Notes receivable .................................         --          --            --          --
  Other investments ................................         --          --            --          --
                                                       ----------     -------      --------    --------
Total Investments in Subsidiaries ..................         --          --            --          --
                                                       ----------     -------      --------    --------

Current Assets
  Cash and temporary cash investments ..............        3,685           1           778       2,190
  Accounts receivable, net
    Customers ......................................      189,820       5,121        73,668      35,763
    Intercompany ...................................       22,277         731         3,519      30,869
    Other ..........................................        4,968          66           873         313
  Income tax refunds ...............................         --           --            --          --
  Gas inventory ....................................      141,684       2,918        49,933      12,709
  Other inventories, at average cost ...............        6,181         274         2,200         520
  Prepayments ......................................       49,531       1,506         1,227       1,263
  Regulatory assets ................................       28,901         583         4,201       1,948
  Underrecovered gas costs .........................         --           --           --          --
  Prepaid property tax .............................         --           --           --          --
  Exchange gas receivable ..........................         --           --           --          --
  Other ............................................      176,916        3,132       47,316       5,786
                                                       ----------      -------     --------    --------
Total Current Assets ...............................      623,963       14,332      183,715      91,361
                                                       ----------      -------     --------    --------

Deferred Charges ...................................       12,652           29        1,119       1,720
Long-term regulatory assets ........................      116,865        3,327       71,748       9,963
                                                       ----------      -------     --------    --------

TOTAL ASSETS .......................................    1,509,406       61,141      638,103     377,236
                                                       ==========      =======      ========    ========
</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   56
F-1 (4 of 10)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES

               Consolidating Balance Sheet as of December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>

                                                                                                                     F-1 Page 4
                                                           CS          CIC        CES(a)         CPC        TVC(a)      Total
                                                         -------      ------     --------      -------      ------     --------
                       ASSETS
<S>                                                       <C>         <C>         <C>           <C>         <C>         <C>
Property, Plant and Equipment
  Gas utility and other plant, at original cost ....
  Accumulated depreciation and depletion ...........

  Net Gas Utility and Other Plant ..................


  Gas and oil producing properties, full cost method
  Accumulated depletion ............................

  Net Gas and Oil Producing Properties .............


Net Property, Plant, and Equipment .................


Investments and Other Assets
  Accounts receivable - noncurrent .................
  Unconsolidated affiliates ........................
  Assets held for sale .............................
  Other ............................................

Total Investments and Other Assets .................


Investments in Subsidiaries
  Capital stock ....................................
  Equity in undistributed earnings of
   subsidiaries ....................................
  Notes receivable .................................
  Other investments ................................

Total Investments in Subsidiaries ..................


Current Assets
  Cash and temporary cash investments ..............
  Accounts receivable, net
    Customers ......................................
    Intercompany ...................................
    Other ..........................................
  Income tax refunds ...............................
  Gas inventory ....................................
  Other inventories, at average cost ...............
  Prepayments ......................................
  Regulatory assets ................................
  Underrecovered gas costs .........................
  Prepaid property tax .............................
  Exchange gas receivable ..........................
  Other ............................................

Total Current Assets ...............................


Deferred Charges ...................................
Long-term regulatory assets ........................


TOTAL ASSETS .......................................

</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED




<PAGE>   57
F-1 (5 of 10)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES

               Consolidating Balance Sheet as of December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>



              ASSETS
<S>                                                     <C>
Property, Plant and Equipment
  Gas utility and other plant, at original cost ....
  Accumulated depreciation and depletion ...........

  Net Gas Utility and Other Plant ..................


  Gas and oil producing properties, full cost method
  Accumulated depletion ............................

  Net Gas and Oil Producing Properties .............


Net Property, Plant, and Equipment .................


Investments and Other Assets
  Accounts receivable - noncurrent .................
  Unconsolidated affiliates ........................
  Assets held for sale .............................
  Other ............................................

Total Investments and Other Assets .................


Investments in Subsidiaries
  Capital stock ....................................
  Equity in undistributed earnings of
   subsidiaries ....................................
  Notes receivable .................................
  Other investments ................................

Total Investments in Subsidiaries ..................


Current Assets
  Cash and temporary cash investments ..............
  Accounts receivable, net
    Customers ......................................
    Intercompany ...................................
    Other ..........................................
  Income tax refunds ...............................
  Gas inventory ....................................
  Other inventories, at average cost ...............
  Prepayments ......................................
  Regulatory assets ................................
  Underrecovered gas costs .........................
  Prepaid property tax .............................
  Exchange gas receivable ..........................
  Other ............................................

Total Current Assets ...............................


Deferred Charges ...................................
Long-term regulatory assets ........................


TOTAL ASSETS .......................................

</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   58
F-1 (6 of 10)
                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES

               Consolidating Balance Sheet as of December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)


<TABLE>
<CAPTION>
                                                    F-1         F-1         F-1       F-1                 Consolidating
      CAPITALIZATION AND LIABILITIES              Page 7       Page 8     Page 9     Page 10   Combined      Entries    Consolidated
                                                ----------   ----------   --------   ------   -----------   ----------   ----------
<S>                                              <C>          <C>          <C>        <C>      <C>          <C>           <C>      
Capitalization
  Common Stock Equity
    Columbia Energy Group - common stock,
     $10 par value (55,495,460 shares 
       outstanding)...........................                                                                              554,955
    Subsidiaries - common stock ..............                                                                                 --
    Additional paid in capital ...............                                                                              754,216
    Retained earnings ........................                                                                              482,715
    Unearned employee compensation ...........                                                                               (1,167)
                                                                                                                         ----------
                                                                                                                       
  Total common stock equity ..................                                                                            1,790,719
                                                                                                                         ----------
                                                                                                                       
  Preferred stock ............................                                                                                 --
  Long-term debt .............................                                                                            2,003,474
  Installment promissory notes payable .......                                                                                 --
  Other intercompany notes and loans .........                                                                                 --
                                                                                                                         ----------
                                                                                                                       
Total Capitalization .........................                                                                            3,794,193
                                                                                                                         ----------
                                                                                                                       
Current Liabilities                                                                                                    
  Short-term debt ............................                                                                              328,121
  Debt obligations ...........................                                                                                  529
  Accounts and drafts payable ................                                                                              536,739
  Intercompany notes and loans                                                                                         
    - current maturities......................                                                                                 --
  Intercompany short-term loans ..............                                                                                 --
  Intercompany accounts payable ..............                                                                                 --
  Accrued taxes ..............................                                                                              140,876
  Accrued interest ...........................                                                                               29,418
  Estimated rate refunds .....................                                                                               68,443
  Estimated supplier obligations .............                                                                               73,877
  Overrecovered gas costs ....................                                                                               84,551
  Transportation and exchange gas payable ....                                                                               89,163
  Deferred income taxes ......................                                                                                 --
  Regulatory liabilities .....................                                                                                9,755
  Other ......................................                                                                              356,756
                                                                                                                         ----------
Total Current Liabilities ....................                                                                            1,718,228
                                                                                                                         ----------
                                                                                                                       
Other Liabilities and Deferred Credits                                                                                 
  Deferred income taxes, noncurrent ..........                                                                              618,362
  Investment tax credits .....................                                                                               35,609
  Postretirement benefits other than pensions                                                                               148,807
  Long-term regulatory liabilities ...........                                                                               41,350
  Other ......................................                                                                              255,790
                                                                                                                         ----------
Total Other Liabilities and Deferred Credits .                                                                            1,099,918
                                                                                                                         ----------
                                                                                                                       
TOTAL CAPITALIZATION AND LIABILITIES .........                                                                            6,612,339
                                                                                                                          ==========
</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   59
F-1 (7 of 10)
                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES

               Consolidating Balance Sheet as of December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                                         F-1 Page 7
                                                       CNR(a)         TCO           CGT         CLG(a)        CKY          Total
                                                       -------     ----------      -------     --------      -------     ----------
       CAPITALIZATION AND LIABILITIES
<S>                                                    <C>          <C>            <C>         <C>           <C>         <C>      
Capitalization
  Common Stock Equity
    Columbia Energy Group - common stock,
     $10 par value (55,495,460 shares outstanding)                       --           --                        --                  
    Subsidiaries - common stock ...................                        49           20                    23,806                
    Additional paid in capital ....................                 1,512,024       82,429                       174                
    Retained earnings .............................                  (537,611)      21,404                    42,681                
    Unearned employee compensation ................                      --           --                        --                  
                                                                   ----------      -------                   -------                
                                                                                                                                    
  Total common stock equity .......................                   974,462      103,853                    66,661                
                                                                   ----------      -------                   -------                
                                                                                                                                    
  Preferred stock .................................                      --           --                        --                  
  Long-term debt ..................................                       555         --                         235                
  Installment promissory notes payable ............                   643,000       68,414                    54,494                
  Other intercompany notes and loans ..............                      --           --                        --                  
                                                                   ----------      -------                   -------                
                                                                                                                                    
Total Capitalization ..............................                 1,618,017      172,267                   121,390                
                                                                   ----------      -------                   -------                
                                                                                                                                    
Current Liabilities                                                                                                                 
  Short-term debt .................................                      --           --                        --                  
  Debt obligations ................................                        33         --                          15                
  Accounts and drafts payable .....................                    20,989        2,495                     9,374                
  Intercompany notes and loans - current maturities                      --           --                        --                  
  Intercompany short-term loans ...................                      --           --                       8,975                
  Intercompany accounts payable ...................                    34,024       15,724                     9,684                
  Accrued taxes ...................................                    66,778        6,832                     1,882                
  Accrued Interest ................................                     1,923           98                        39                
  Estimated rate refunds ..........................                    47,764        8,172                     1,383                
  Estimated supplier obligations ..................                    73,877         --                        --                  
  Overrecovered gas costs .........................                      --           --                        --                  
  Transportation and exchange gas payable .........                      --           --                        --                  
  Deferred income taxes ...........................                      --           --                       2,792                
  Regulatory liabilities ..........................                     8,082        1,673                      --                  
  Other ...........................................                   179,913       41,934                     9,884                
                                                                   ----------      -------                   -------                
Total Current Liabilities .........................                   433,383       76,928                    44,028                
                                                                   ----------      -------                   -------                
                                                                                                                                    
Other Liabilities and Deferred Credits                                                                                              
  Income taxes, noncurrent ........................                   251,739       37,662                     4,337                
  Investment tax credits ..........................                     1,031          263                     1,834                
  Postretirement benefits other than pensions .....                    40,833        3,633                     4,066                
  Long-term regulatory liabilities ................                    17,041          153                     3,856                
  Other ...........................................                   132,092        2,505                     1,302                
                                                                   ----------      -------                   -------                
Total Other Liabilities and Deferred Credits ......                   442,736       44,216                    15,395                
                                                                   ----------      -------                   -------                
                                                                                                                                    
TOTAL CAPITALIZATION AND LIABILITIES ..............                 2,494,136      293,411                   180,813                
                                                                   ==========      =======                   =======                
</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   60

F-1 (8 of 10)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES

               Consolidating Balance Sheet as of December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                                  F-1 Page 8 
                                                       COH           CMD         CPA         COS        CG           Total 
                                                     ---------     -------      -------     -------  --------     ----------- 
     CAPITALIZATION AND LIABILITIES                                                                                   
<S>                                                  <C>            <C>         <C>         <C>      <C>          <C> 
Capitalization                                                                                                                    
  Common Stock Equity                                                                                                             
    Columbia Energy Group - common stock,                                                                                         
     $10 par value (55,495,460 shares outstanding)        --          --           --          --                                 
    Subsidiaries - common stock ...................    119,240          72       85,128      65,305                               
    Additional paid in capital ....................       --        10,020         --         2,969                               
    Retained earnings .............................    303,247      12,307      130,987      73,521                               
    Unearned employee compensation ................       --          --           --          --    
                                                     ---------     -------      -------     -------                               
                                                                                                                                  
  Total common stock equity .......................    422,487      22,399      216,115     141,795                               
                                                     ---------     -------      -------     -------                               
                                                                                                                                  
  Preferred stock .................................       --          --           --          --                                 
  Long-term debt ..................................      1,012          40          396         700                               
  Installment promissory notes payable ............    319,959      17,819      148,451     116,677                               
  Other intercompany notes and loans ..............       --          --           --          --                                 
                                                     ---------     -------      -------     -------                               
                                                                                                                                  
Total Capitalization ..............................    743,458      40,258      364,962     259,172                               
                                                     ---------     -------      -------     -------                               
                                                                                                                                  
Current Liabilities                                                                                                               
  Short-term debt .................................       --          --           --          --                                 
  Debt obligations ................................         97          17           33         200                               
  Accounts and drafts payable .....................    104,318       2,354       19,627      14,604                               
  Intercompany notes and loans - current maturities       --          --           --          --                                 
  Intercompany short-term loans ...................    151,110       1,703       65,691        --                                 
  Intercompany accounts payable ...................     61,997       3,546       25,770      49,982                               
  Accrued taxes ...................................     94,708        (394)       6,304       2,547                               
  Accrued Interest ................................        388          10           63         230                               
  Estimated rate refunds ..........................      1,441         533        6,376       2,774                               
  Estimated supplier obligations ..................       --          --           --          --                                 
  Overrecovered gas costs .........................       --          --           --          --                                 
  Transportation and exchange gas payable .........       --          --           --          --                                 
  Deferred income taxes ...........................       --          --          6,297         820                               
  Regulatory liabilities ..........................       --          --           --          --                                 
  Other ...........................................    178,491       5,730       34,231      15,290                               
                                                     ---------     -------      -------     -------                               
Total Current Liabilities .........................    592,550      13,499      164,392      86,447                               
                                                     ---------     -------      -------     -------                               
                                                                                                                                  
Other Liabilities and Deferred Credits                                                                                            
  Deferred income taxes, noncurrent ...............     80,302       2,447       71,229      16,418                               
  Investment tax credits ..........................     19,298       1,010        9,359       2,814                               
  Postretirement benefits other than pensions .....     48,281       1,478       16,083       4,190                               
  Long-term regulatory liabilities ................     10,391       1,813        6,637       1,459                               
  Other ...........................................     15,126         636        5,441       6,736                               
                                                     ---------     -------      -------     -------                               
Total Other Liabilities and Deferred Credits ......    173,398       7,384      108,749      31,617                               
                                                     ---------     -------      -------     -------                               
                                                                                                                                  
TOTAL CAPITALIZATION AND LIABILITIES ..............  1,509,406      61,141      638,103     377,236                               
                                                     =========     =======      =======     =======                               
</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   61

F-1 (9 of 10)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES

               Consolidating Balance Sheet as of December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                                     F-1 Page 9
                                                          CS          CIC        CES(a)        CPC       TVC (a)       Total
                                                        -------      ------     --------      ------     -------      --------
        CAPITALIZATION AND LIABILITIES
<S>                                                      <C>         <C>         <C>          <C>         <C>          <C>    
Capitalization
  Common Stock Equity
    Columbia Energy Group - common stock,
     $10 par value (55,495,460 shares outstanding)         --      
    Subsidiaries - common stock ...................         300    
    Additional paid in capital ....................      12,700    
    Retained earnings .............................         187    
    Unearned employee compensation ................        --      
                                                        -------    

  Total common stock equity .......................      13,187    
                                                        -------    

  Preferred stock .................................        --      
  Long-term debt ..................................        --      
  Installment promissory notes payable ............      16,043    
  Other intercompany notes and loans ..............        --      
                                                        -------    

Total Capitalization ..............................      29,230    
                                                        -------    

Current Liabilities
  Short-term debt .................................        --      
  Debt obligations ................................        --      
  Accounts and drafts payable .....................      16,023    
  Intercompany notes and loans - current maturities        --      
  Intercompany short-term loans ...................      20,030    
  Intercompany accounts payable ...................       4,406    
  Accrued taxes ...................................      (1,858)   
  Accrued interest ................................        --      
  Estimated rate refunds ..........................        --      
  Estimated supplier obligations ..................        --      
  Overrecovered gas costs .........................        --      
  Transportation and exchange gas payable .........        --      
  Deferred income taxes ...........................        --      
  Regulatory liabilities ..........................        --      
  Other ...........................................      12,890    
                                                        -------    
Total Current Liabilities .........................      51,491    
                                                        -------    

Other Liabilities and Deferred Credits
  Deferred income taxes, noncurrent ...............       1,826    
  Investment tax credits ..........................        --      
  Postretirement benefits other than pensions .....       7,195    
  Long-term regulatory liabilities ................        --      
  Other ...........................................       1,706    
                                                        -------    
Total Other Liabilities and Deferred Credits ......      10,727    
                                                        -------    

TOTAL CAPITALIZATION AND LIABILITIES ..............      91,448    
                                                        =======    
</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   62
F-1 (10 of 10)
                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES

               Consolidating Balance Sheet as of December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                                    F-1 Page 10
                                                               TCC (a)             CAT             CNS (a)             Total
                                                              -----------       -----------       -----------       -----------
        CAPITALIZATION AND LIABILITIES
<S>                                                           <C>               <C>               <C>               <C>  
Capitalization
  Common Stock Equity
    Columbia Energy Group - common stock,
     $10 par value (55,495,460 shares outstanding)         
    Subsidiaries - common stock ...................        
    Additional paid in capital ....................        
    Retained earnings .............................        
    Unearned employee compensation ................        
                                                           

  Total common stock equity .......................        
                                                           

  Preferred stock .................................        
  Long-term debt ..................................        
  Installment promissory notes payable ............        
  Other intercompany notes and loans ..............        
                                                           

Total Capitalization ..............................        
                                                           

Current Liabilities
  Short-term debt .................................        
  Debt obligations ................................        
  Accounts and drafts payable .....................        
  Intercompany notes and loans - current maturities        
  Intercompany short-term loans ...................        
  Intercompany accounts payable ...................        
  Accrued taxes ...................................        
  Accrued interest ................................        
  Estimated rate refunds ..........................        
  Estimated supplier obligations ..................        
  Overrecovered gas costs .........................        
  Transportation and exchange gas payable .........        
  Deferred income taxes ...........................        
  Regulatory liabilities ..........................        
  Other ...........................................        
                                                           
Total Current Liabilities .........................        
                                                           

Other Liabilities and Deferred Credits
  Deferred income taxes, noncurrent ...............        
  Investment tax credits ..........................        
  Postretirement benefits other than pensions .....        
  Long-term regulatory liabilities ................        
  Other ...........................................        
                                                           
Total Other Liabilities and Deferred Credits ......        
                                                           

TOTAL CAPITALIZATION AND LIABILITIES ..............        
                                                           
</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   63
<TABLE>
<CAPTION>
F-1A (1 of 6)

                                               COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                                           Columbia Electric Corporation and Subsidiaries
                                         Consolidating Balance Sheet as of December 31, 1997
                                      (Not covered by Report of Independent Public Accountants)
                                                            ($ Thousands)


                                                               F-1A           F-1A                     Consolidating       TVC
                                                              Page 2         Page 3       Combined        Entries      Consolidated
                                                             -------        -------        -------        -------         -------
<S>                                                           <C>            <C>          <C>          <C>             <C>
                      ASSETS
Property, Plant and Equipment
  Gas utility and other plant, at original cost...........  
  Accumulated depreciation and depletion..................  
                                                            

  Net Gas Utility and Other Plant.........................  
                                                            

  Gas and oil producing properties, full cost method......  
  Accumulated depletion...................................  
                                                            

  Net Gas and Oil Producing Properties....................  
                                                            

Net Property, Plant, and Equipment........................  
                                                            

Investments and Other Assets
  Accounts receivable - noncurrent........................  
  Unconsolidated affiliates...............................  
  Assets held for sale....................................  
  Other...................................................  
                                                            

Total Investments and Other Assets........................  
                                                            

Investments in Subsidiaries
  Capital stock...........................................  
  Equity in undistributed earnings of                       
   subsidiaries...........................................  
  Notes receivable........................................  
  Other investments.......................................  
                                                            

Total Investments in Subsidiaries.........................  
                                                            

Current Assets
  Cash and temporary cash investments.....................  
  Accounts receivable, net                                
    Customers.............................................  
    Intercompany..........................................  
    Other.................................................  
  Income tax refunds......................................  
  Gas inventory...........................................  
  Other inventories, at average cost......................  
  Prepayments.............................................  
  Other...................................................  
                                                            

Total Current Assets......................................  
                                                            

Deferred Charges..........................................  
                                                            

TOTAL ASSETS..............................................  
                                                            
</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   64
<TABLE>
<CAPTION>
F-1A (2 of 6)
                                               COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                                           Columbia Electric Corporation and Subsidiaries
                                         Consolidating Balance Sheet as of December 31, 1997
                                      (Not covered by Report of Independent Public Accountants)
                                                            ($ Thousands)


                                                                                                                        F-1A Page 2
                                                              BGC       BLC     GGC   GLC      PGC       PLC      TVC     Total
                                                             ------    ------   ---   ---    ------    ------    ------   ------
<S>                                                          <C>       <C>      <C>   <C>    <C>       <C>       <C>    <C>
                       ASSETS
Property, Plant and Equipment
  Gas utility and other plant, at original cost ..........   
  Accumulated depreciation and depletion .................   
                                                             

  Net Gas Utility and Other Plant ........................   
                                                             

  Gas and oil producing properties, full cost method .....   
  Accumulated depletion ..................................   
                                                             

  Net Gas and Oil Producing Properties ...................   
                                                             

Net Property, Plant, and Equipment .......................   
                                                             

Investments and Other Assets
  Accounts receivable - noncurrent .......................   
  Unconsolidated affiliates ..............................   
  Assets held for sale ...................................   
  Other ..................................................   
                                                             

Total Investments and Other Assets .......................   
                                                             

Investments in Subsidiaries
  Capital stock ..........................................   
  Equity in undistributed earnings of
   subsidiaries ..........................................   
  Notes receivable .......................................   
  Other investments ......................................   
                                                             

Total Investments in Subsidiaries ........................   
                                                             

Current Assets
  Cash and temporary cash investments ....................   
  Accounts receivable, net ...............................   
    Customers ............................................   
    Intercompany .........................................   
    Other ................................................   
  Income tax refund ......................................   
  Gas inventory ..........................................   
  Other inventories, at average cost .....................   
  Prepayments ............................................   
  Other ..................................................   
                                                             
                                                             
Total Current Assets .....................................   
                                                             

Deferred Charges .........................................   
                                                             

TOTAL ASSETS .............................................   
                                                             
</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   65
<TABLE>
<CAPTION>
F-1A (3 of 6)
                                               COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                                           Columbia Electric Corporation and Subsidiaries
                                         Consolidating Balance Sheet as of December 31, 1997
                                      (Not covered by Report of Independent Public Accountants)
                                                            ($ Thousands)


                                                                                                                         F-1A Page 3
                                                          VGC         VLC          RL         FC      TVC9      TVC10       Total
                                                         ------      ------      ------       --      ----      -----      ------
<S>                                                      <C>         <C>        <C>           <C>     <C>       <C>      <C>
ASSETS
Property, Plant and Equipment
  Gas utility and other plant, at original cost ........ 
  Accumulated depreciation and depletion ............... 
                                                         

  Net Gas Utility and Other Plant ...................... 
                                                         

  Gas and oil producing properties, full cost method ... 
  Accumulated depletion ................................ 
                                                         

  Net Gas and Oil Producing Properties ................. 
                                                         

Net Property, Plant, and Equipment ..................... 
                                                         

Investments and Other Assets
  Accounts receivable - noncurrent ..................... 
  Unconsolidated affiliates ............................ 
  Assets held for sale ................................. 
  Other ................................................ 
                                                         

Total Investments and Other Assets ..................... 
                                                         

Investments in Subsidiaries
  Capital stock ........................................ 
  Equity in undistributed earnings of
   subsidiaries ........................................ 
  Notes receivable ..................................... 
  Other investments .................................... 
                                                         

Total Investments in Subsidiaries ...................... 
                                                         

Current Assets
  Cash and temporary cash investments .................. 
  Accounts receivable, net
    Customers .......................................... 
    Intercompany ....................................... 
    Other .............................................. 
  Income tax refunds ................................... 
  Gas inventory ........................................ 
  Other inventories, at average cost ................... 
  Prepayments .......................................... 
  Other ................................................ 
                                                         

Total Current Assets ................................... 
                                                         

Deferred Charges ....................................... 
                                                         

TOTAL ASSETS ........................................... 
                                                         
</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   66
<TABLE>
<CAPTION>
F-1A (4 of 6)
                                               COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                                           Columbia Electric Corporation and Subsidiaries
                                         Consolidating Balance Sheet as of December 31, 1997
                                      (Not covered by Report of Independent Public Accountants)
                                                            ($ Thousands)


                                                                F-1A          F-1A                  Consolidating     TVC
                CAPITALIZATION AND LIABILITIES                 Page 5        Page 6     Combined       Entries    Consolidated
                                                              -------       -------      -------       -------       -------
<S>                                                           <C>           <C>          <C>           <C>           <C>
Capitalization
  Common Stock Equity
    Columbia Energy Group - common stock,
     $10 par value (55,495,460 shares outstanding) ......... 
    Subsidiaries - common stock ............................ 
    Additional paid in capital ............................. 
    Retained earnings ...................................... 
    Unearned employee compensation ......................... 
                                                             

  Total common stock equity ................................ 
                                                             

  Long-term debt ........................................... 
  Installment promissory notes payable ..................... 
  Other intercompany notes and loans ....................... 
                                                             

Total Capitalization ....................................... 
                                                             

Current Liabilities
  Debt obligations ......................................... 
  Accounts and drafts payable .............................. 
  Intercompany notes and loans - current maturities ........ 
  Intercompany short-term loans ............................ 
  Intercompany accounts payable ............................ 
  Accrued taxes ............................................ 
  Accrued interest ......................................... 
  Estimated rate refunds ................................... 
  Estimated supplier obligations ........................... 
  Transportation and exchange gas payable .................. 
  Deferred income taxes .................................... 
  Other .................................................... 
                                                             
Total Current Liabilities .................................. 
                                                             

Other Liabilities and Deferred Credits
  Deferred income taxes, noncurrent ........................ 
  Investment tax credits ................................... 
  Postretirement benefits other than pensions .............. 
  Other .................................................... 
                                                             
Total Other Liabilities and Deferred Credits ............... 
                                                             


TOTAL CAPITALIZATION AND LIABILITIES ....................... 
                                                             
</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   67
<TABLE>
<CAPTION>
F-1A (5 of 6)
                                               COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                                           Columbia Electric Corporation and Subsidiaries
                                         Consolidating Balance Sheet as of December 31, 1997
                                      (Not covered by Report of Independent Public Accountants)
                                                            ($ Thousands)

                                                                                                                         F-1A Page 5
CAPITALIZATION AND LIABILITIES                          BGC       BLC       GGC       GLC       PGC       PLC      TVC       Total
                                                      -------   -------   -------   -------   -------   -------   -------   -------
<S>                                                   <C>       <C>       <C>       <C>       <C>       <C>       <C>       <C>
Capitalization
  Common Stock Equity
    Columbia Energy Group - common stock,
     $10 par value (55,495,460 shares outstanding) .
    Subsidiaries - common stock ....................
    Additional paid in capital .....................
    Retained earnings ..............................
    Unearned employee compensation .................


  Total common stock equity ........................

  Long-term debt ...................................
  Installment promissory notes payable .............
  Other intercompany notes and loans ...............


Total Capitalization ...............................


Current Liabilities
  Debt obligations .................................
  Accounts and drafts payable ......................
  Intercompany notes and loans - current maturities
  Intercompany short-term loans ....................
  Intercompany accounts payable ....................
  Accrued taxes ....................................
  Accrued interest .................................
  Estimated rate refunds ...........................
  Estimated supplier obligations ...................
  Transportation and exchange gas payable ..........
  Deferred income taxes ............................
  Other ............................................

Total Current Liabilities ..........................


Other Liabilities and Deferred Credits
  Deferred income taxes, noncurrent ................
  Investment tax credits ...........................
  Postretirement benefits other than pensions ......
  Other ............................................

Total Other Liabilities and Deferred Credits .......



TOTAL CAPITALIZATION AND LIABILITIES ...............

                                                  CONFIDENTIAL TREATMENT REQUESTED
</TABLE>

<PAGE>   68
<TABLE>
<CAPTION>
F-1A (6 of 6)
                                               COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                                           Columbia Electric Corporation and Subsidiaries
                                         Consolidating Balance Sheet as of December 31, 1997
                                      (Not covered by Report of Independent Public Accountants)
                                                            ($ Thousands)

                                                                                                                         F-1A Page 6
             CAPITALIZATION AND LIABILITIES           VGC          VLC           RL          FC       TVC9      TVC10       Total
                                                     ------       ------       ------      ------     ----      ------      ------
<S>                                                  <C>          <C>          <C>         <C>       <C>        <C>      <C>
Capitalization
  Common Stock Equity
    Columbia Energy Group - common stock,
     $10 par value (55,495,460 shares outstanding)
    Subsidiaries - common stock ...................
    Additional paid in capital ....................
    Retained earnings .............................
    Unearned employee compensation ................


  Total common stock equity .......................

  Long-term debt ..................................
  Installment promissory notes payable ............
  Other intercompany notes and loans ..............


Total Capitalization ..............................


Current Liabilities
  Debt obligations ................................
  Accounts and drafts payable .....................
  Intercompany notes and loans - current maturities
  Intercompany short-term loans ...................
  Intercompany accounts payable ...................
  Accrued taxes ...................................
  Accrued interest ................................
  Estimated rate refunds ..........................
  Estimated supplier obligations ..................
  Transportation and exchange gas payable .........
  Deferred income taxes ...........................
  Other ...........................................

Total Current Liabilities .........................


Other Liabilities and Deferred Credits
  Deferred income taxes, noncurrent ...............
  Investment tax credits ..........................
  Postretirement benefits other than pensions .....
  Other ...........................................

Total Other Liabilities and Deferred Credits ......



TOTAL CAPITALIZATION AND LIABILITIES ..............

                                                  CONFIDENTIAL TREATMENT REQUESTED
</TABLE>

                       
<PAGE>   69
F-1B (1 of 2)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                   Tristar Capital Corporation and Subsidiary
               Consolidating Balance Sheet as of December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                   Consoli-
                                                                                                    dating             TCC
                         ASSETS                              TGT          TCC        Combined      Entries    Consolidated
                                                             ---          ---        --------      -------    ------------


<S>                                                      <C>           <C>           <C>           <C>            <C>
Property, Plant and Equipment ......................
  Gas utility and other plant, at original cost ....
  Accumulated depreciation and depletion ...........

  Net Gas Utility and Other Plant ..................


  Gas and oil producing properties, full cost method
  Accumulated depletion ............................

  Net Gas and Oil Producing Properties .............


Net Property, Plant, and Equipment .................


Investments and Other Assets
  Accounts receivable - noncurrent .................
  Unconsolidated affiliates ........................
  Assets held for sale .............................
  Other ............................................

Total Investments and Other Assets .................


Investments in Subsidiaries
  Capital stock ....................................
  Equity in undistributed earnings of
   subsidiaries ....................................
  Notes receivable .................................
  Other investments ................................

Total Investments in Subsidiaries ..................


Current Assets
  Cash and temporary cash investments ..............
  Accounts receivable, net
    Customers ......................................
    Intercompany ...................................
    Other ..........................................
  Income tax refunds ...............................
  Gas inventory ....................................
  Other inventories, at average cost ...............
  Prepayments ......................................
  Regulatory assets ................................
  Other ............................................

Total Current Assets ...............................


Deferred Charges ...................................
Long-term Regulatory Assets ........................


TOTAL ASSETS .......................................

                                                  CONFIDENTIAL TREATMENT REQUESTED
</TABLE>

<PAGE>   70

F-1B (2 of 2)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                   Tristar Capital Corporation and Subsidiary
               Consolidating Balance Sheet as of December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                  Consoli-
                                                                                                    dating              TCC
             CAPITALIZATION AND LIABILITIES                 TGT          TCC        Combined       Entries     Consolidated
                                                            ---          ---        --------       -------     ------------

<S>                                                       <C>           <C>         <C>            <C>            <C>
Capitalization
  Common Stock Equity
    Columbia Energy Group - common stock,
     $10 par value (55,498,460 shares outstanding) ..
    Subsidiaries - common stock .....................
    Additional paid in capital ......................
    Retained earnings ...............................
    Unearned employee compensation ..................


  Total common stock equity .........................


  Long-term debt ....................................
  Installment promissory notes payable ..............
  Other intercompany notes and loans ................


Total Capitalization ................................


Current Liabilities
  Debt obligations ..................................
  Accounts and drafts payable .......................
  Intercompany notes and loans - current maturities .
  Intercompany short-term loans .....................
  Intercompany accounts payable .....................
  Accrued taxes .....................................
  Accrued interest ..................................
  Estimated rate refunds ............................
  Estimated supplier obligations ....................
  Transportation and exchange gas payable ...........
  Deferred income taxes .............................
  Regulatory liabilities ............................
  Other .............................................

Total Current Liabilities ...........................


Other Liabilities and Deferred Credits
  Deferred income taxes, noncurrent .................
  Investment tax credits ............................
  Postretirement benefits other than pensions .......
  Long-term regulatory liabilities ..................
  Other .............................................

Total Other Liabilities and Deferred Credits ........



TOTAL CAPITALIZATION AND LIABILITIES ................

                                                  CONFIDENTIAL TREATMENT REQUESTED
</TABLE>
<PAGE>   71
F1C (1 of 2)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                     Columbia LNG Corporation and Subsidiary
               Consolidating Balance Sheet as of December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)
<TABLE>
<CAPTION>

                                                                                                 Consoli-
                                                                                                   dating              CLG
                            ASSETS                           CLNG         CLG        Combined     Entries     Consolidated
                                                             ----         ---        --------     -------     ------------

<S>                                                         <C>          <C>         <C>         <C>          <C>
Property, Plant and Equipment
  Gas utility and other plant, at original cost .....
  Accumulated depreciation and depletion ............


  Net Gas Utility and Other Plant ...................


  Gas and oil producing properties, full cost method
  Accumulated depletion .............................


  Net Gas and Oil Producing Properties ..............


Net Property, Plant, and Equipment ..................


Investments and Other Assets
  Accounts receivable - noncurrent ..................
  Unconsolidated affiliates .........................
  Assets held for sale ..............................
  Other .............................................


Total Investments and Other Assets ..................


Investments in Subsidiaries
  Capital stock .....................................
  Equity in undistributed earnings of
   subsidiaries .....................................
  Notes receivable ..................................
  Other investments .................................


Total Investments in Subsidiaries ...................


Current Assets
  Cash and temporary cash investments ...............
  Accounts receivable, net
    Customers .......................................
    Intercompany ....................................
    Other ...........................................
  Income tax refunds ................................
  Gas inventory .....................................
  Other inventories, at average cost ................
  Prepayments .......................................
  Regulatory assets .................................
  Other .............................................


Total Current Assets ................................


Deferred Charges ....................................
Long-term Regulatory Assets .........................


TOTAL ASSETS ........................................

                                                  CONFIDENTIAL TREATMENT REQUESTED
</TABLE>

<PAGE>   72

F-1C (2 of 2)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                     Columbia LNG Corporation and Subsidiary
               Consolidating Balance Sheet as of December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)
<TABLE>
<CAPTION>

                                                                                                        Consoli-
                                                                                                          dating                CLG
             CAPITALIZATION AND LIABILITIES                 CLNG           CLG           Combined        Entries       Consolidated
                                                            ----           ---           --------        -------       ------------

<S>                                                        <C>           <C>             <C>            <C>            <C>
Capitalization
  Common Stock Equity
    Columbia Energy Group - common stock,
     $10 par value (55,495,460 shares outstanding)
    Subsidiaries - common stock ...................
    Additional paid in capital ....................
    Retained earnings .............................
    Unearned employee compensation ................


  Total common stock equity .......................

  Long-term debt ..................................
  Installment promissory notes payable ............
  Other intercompany notes and loans ..............


Total Capitalization ..............................


Current Liabilities
  Debt obligations ................................
  Accounts and drafts payable .....................
  Intercompany notes and loans - current maturities
  Intercompany short-term loans ...................
  Intercompany accounts payable ...................
  Accrued taxes ...................................
  Accrued interest ................................
  Estimated rate refunds ..........................
  Estimated supplier obligations ..................
  Transportation and exchange gas payable .........
  Deferred income taxes ...........................
  Regulatory liabilities ..........................
  Other ...........................................


Total Current Liabilities .........................


Other Liabilities and Deferred Credits
  Deferred income taxes, noncurrent ...............
  Investment tax credits ..........................
  Postretirement benefits other than pensions .....
  Long-term regulatory liabilities ................
  Other ...........................................


Total Other Liabilities and Deferred Credits ......



TOTAL CAPITALIZATION AND LIABILITIES ..............

                                                  CONFIDENTIAL TREATMENT REQUESTED
</TABLE>



<PAGE>   73

 F-1D (1 of 2)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
              Columbia Energy Services Corporation and Subsidiaries
               Consolidating Balance Sheet as of December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>


                       ASSETS                                   CEM            CPM             CSP             CES
                                                                ---            ---             ---             ---
<S>                                                          <C>             <C>            <C>             <C>
 Property, Plant and Equipment
   Gas utility and other plant, at original cost .....
   Accumulated depreciation and depletion ............


   Net Gas Utility and Other Plant ...................


   Gas and oil producing properties, full cost method
   Accumulated depletion .............................


   Net Gas and Oil Producing Properties ..............


 Net Property, Plant, and Equipment ..................


 Investments and Other Assets
   Accounts receivable - noncurrent ..................
   Unconsolidated affiliates .........................
   Assets held for sale ..............................
   Other .............................................


 Total Investments and Other Assets ..................


 Investments in Subsidiaries
   Capital stock .....................................
   Equity in undistributed earnings of
    subsidiaries .....................................
   Notes receivable ..................................
   Other investments .................................


 Total Investments in Subsidiaries ...................


 Current Assets
   Cash and temporary cash investments ...............
   Accounts receivable, net
     Customers .......................................
     Intercompany ....................................
     Other ...........................................
   Income tax refunds ................................
   Gas inventory .....................................
   Other inventories, at average cost ................
   Prepayments .......................................
   Regulatory assets .................................
   Exchange gas receivable ...........................
   Other .............................................


 Total Current Assets ................................


 Deferred Charges ....................................
 Long-term Regulatory Assets .........................


 TOTAL ASSETS ........................................

</TABLE>
                        CONFIDENTIAL TREATMENT REQUESTED

<TABLE>
<CAPTION>


                                                                      Consoli-
                                                                        dating               CES
                       ASSETS                           Combined       Entries        Consolidated
                       ------                           --------       -------        ------------
<S>                                                    <C>            <C>             <C>
 Property, Plant and Equipment
   Gas utility and other plant, at original cost .....
   Accumulated depreciation and depletion ............

   Net Gas Utility and Other Plant ...................


   Gas and oil producing properties, full cost method
   Accumulated depletion .............................

   Net Gas and Oil Producing Properties ..............


 Net Property, Plant, and Equipment ..................


 Investments and Other Assets
   Accounts receivable - noncurrent ..................
   Unconsolidated affiliates .........................
   Assets held for sale ..............................
   Other .............................................

 Total Investments and Other Assets ..................


 Investments in Subsidiaries
   Capital stock .....................................
   Equity in undistributed earnings of
    subsidiaries .....................................
   Notes receivable ..................................
   Other investments .................................

 Total Investments in Subsidiaries ...................


 Current Assets
   Cash and temporary cash investments ...............
   Accounts receivable, net
     Customers .......................................
     Intercompany ....................................
     Other ...........................................
   Income tax refunds ................................
   Gas inventory .....................................
   Other inventories, at average cost ................
   Prepayments .......................................
   Regulatory assets .................................
   Exchange gas receivable ...........................
   Other .............................................

 Total Current Assets ................................


 Deferred Charges ....................................
 Long-term Regulatory Assets .........................


 TOTAL ASSETS ........................................

</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   74


 F-1D (2 of 2)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
              Columbia Energy Services Corporation and Subsidiaries
               Consolidating Balance Sheet as of December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)
<TABLE>
<CAPTION>


            CAPITALIZATION AND LIABILITIES                   CEM            CPM             CSP             CES           Combined
                                                             ---            ---             ---             ---           --------

<S>                                                       <C>            <C>             <C>             <C>              <C>
Capitalization
  Common Stock Equity
    Columbia Energy Group - common stock,
     $10 par value (55,495,460) shares outstanding)
    Subsidiaries - common stock ...................
    Additional paid in capital ....................
    Retained earnings .............................
    Unearned employee compensation ................


  Total common stock equity .......................
  Long-term debt ..................................
  Installment promissory notes payable ............
  Other intercompany notes and loans ..............

Total Capitalization ..............................


Current Liabilities
  Debt obligations ................................
  Accounts and drafts payable .....................
  Intercompany notes and loans - current maturities
  Intercompany short-term loans ...................
  Intercompany accounts payable ...................
  Accrued taxes ...................................
  Accrued interest ................................
  Estimated rate refunds ..........................
  Estimated supplier obligations ..................
  Transportation and exchange gas payable .........
  Deferred income taxes ...........................
  Regulatory liabilities ..........................
  Other ...........................................

Total Current Liabilities .........................


Other Liabilities and Deferred Credits
  Income taxes, noncurrent ........................
  Investment tax credits ..........................
  Postretirement benefits other than pensions .....
  Long-term regulatory liabilities ................
  Other ...........................................

Total Other Liabilities and Deferred Credits ......


TOTAL CAPITALIZATION AND LIABILITIES ..............

</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED

<TABLE>
<CAPTION>

                                                           Consoli-
                                                             dating               CES
            CAPITALIZATION AND LIABILITIES                  Entries      Consolidated
                                                            -------      ------------

<S>                                                       <C>            <C>
Capitalization
  Common Stock Equity
    Columbia Energy Group - common stock,
     $10 par value (55,495,460) shares outstanding)
    Subsidiaries - common stock ...................
    Additional paid in capital ....................
    Retained earnings .............................
    Unearned employee compensation ................


  Total common stock equity .......................
  Long-term debt ..................................
  Installment promissory notes payable ............
  Other intercompany notes and loans ..............

Total Capitalization ..............................


Current Liabilities
  Debt obligations ................................
  Accounts and drafts payable .....................
  Intercompany notes and loans - current maturities
  Intercompany short-term loans ...................
  Intercompany accounts payable ...................
  Accrued taxes ...................................
  Accrued interest ................................
  Estimated rate refunds ..........................
  Estimated supplier obligations ..................
  Transportation and exchange gas payable .........
  Deferred income taxes ...........................
  Regulatory liabilities ..........................
  Other ...........................................

Total Current Liabilities .........................


Other Liabilities and Deferred Credits
  Income taxes, noncurrent ........................
  Investment tax credits ..........................
  Postretirement benefits other than pensions .....
  Long-term regulatory liabilities ................
  Other ...........................................

Total Other Liabilities and Deferred Credits ......


TOTAL CAPITALIZATION AND LIABILITIES ..............

</TABLE>
                        CONFIDENTIAL TREATMENT REQUESTED

<PAGE>   75

F-1E (1 of 2)
                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
              Columbia Network Services Corporation and Subsidiary
               Consolidated Balance Sheet as of December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>

                                                                                                  Consoli-
                                                                                                    dating               CNS
                          ASSETS                              CMC          CNS        Combined     Entries      Consolidated
                                                              ---          ---        --------     -------      ------------

<S>                                                         <C>           <C>          <C>           <C>          <C>
Property, Plant and Equipment
  Gas utility and other plant, at original cost .....
  Accumulated depreciation and depletion ............

  Net Gas Utility and Other Plant ...................


  Gas and oil producing properties, full cost method
  Accumulated depletion .............................

  Net Gas and Oil Producing Properties ..............


Net Property, Plant, and Equipment ..................


Investments and Other Assets
  Accounts receivable - noncurrent ..................
  Unconsolidated affiliates .........................
  Assets held for sale ..............................
  Other .............................................

Total Investments and Other Assets ..................


Investments in Subsidiaries
  Capital stock .....................................
  Equity in undistributed earnings of
   subsidiaries .....................................
  Notes receivable ..................................
  Other investments .................................

Total Investments in Subsidiaries ...................


Current Assets
  Cash and temporary cash investments ...............
  Accounts receivable, net
    Customers .......................................
    Intercompany ....................................
    Other ...........................................
  Income tax refunds ................................
  Gas inventory .....................................
  Other inventories, at average cost ................
  Prepayments .......................................
 Regulatory assets ..................................
  Other .............................................

Total Current Assets ................................


Deferred Charges ....................................
Long-term Regulatory Assets .........................


TOTAL ASSETS ........................................

</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   76


F-1E (2 of 2)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
              Columbia Network Services Corporation and Subsidiary
               Consolidated Balance Sheet as of December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)
<TABLE>
<CAPTION>

                                                                                                   Consoli-
                                                                                                     dating             CNS
          CAPITALIZATION AND LIABILITIES                    CMC           CNS        Combined       Entries    Consolidated
                                                            ---           ---        --------       -------    ------------

<S>                                                       <C>           <C>          <C>            <C>        <C>
Capitalization
  Common Stock Equity
    Columbia Energy Group - common stock,
     $10 par value (55,495,460 shares outstanding)
    Subsidiaries - common stock ...................
    Additional paid in capital ....................
    Retained earnings .............................
    Unearned employee compensation ................


  Total common stock equity .......................


  Long-term debt ..................................
  Installment promissory notes payable ............
  Other intercompany notes and loans ..............


Total Capitalization ..............................


Current Liabilities
  Debt obligations ................................
  Accounts and drafts payable .....................
  Intercompany notes and loans - current maturities
  Intercompany short-term loans ...................
  Intercompany accounts payable ...................
  Accrued taxes ...................................
  Accrued interest ................................
  Estimated rate refunds ..........................
  Estimated supplier obligations ..................
  Transportation and exchange gas payable .........
  Deferred income taxes ...........................
  Regulatory liabilities ..........................
  Other ...........................................


Total Current Liabilities .........................


Other Liabilities and Deferred Credits
  Deferred income taxes, noncurrent ...............
  Investment tax credits ..........................
  Postretirement benefits other than pensions .....
  Long-term regulatory liabilities ................
  Other ...........................................


Total Other Liabilities and Deferred Credits ......


TOTAL CAPITALIZATION AND LIABILITIES ..............

</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   77
<TABLE>
<CAPTION>
F-1F (1 of 2)
                                               COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                                           Columbia Natural Resources, Inc. and Subsidiary
                                         Consolidating Balance Sheet as of December 31, 1997
                                      (Not covered by Report of Independent Public Accountants)
                                                            ($ Thousands)

                                                                                                            Consoli-
                                                                                                            dating         CNR
                   ASSETS                                        CNR           Alamco         Combined      Entries    Consolidated
                                                               --------       --------        --------      --------     --------
<S>                                                             <C>              <C>           <C>          <C>        <C>
Property, Plant and Equipment
  Gas utility and other plant, at original cost .......                                                                           
  Accumulated depreciation and depletion ..............                                                                           
                                                                                                                                  
  Net Gas Utility and Other Plant .....................                                                                           
                                                                                                                                  
                                                                                                                                  
  Gas and oil producing properties, full cost method ..                                                                           
  Accumulated depletion ...............................                                                                           
                                                                                                                                  
  Net Gas and Oil Producing Properties ................                                                                           
                                                                                                                                  
                                                                                                                                  
Net Property, Plant, and Equipment ....................                                                                           
                                                                                                                                  
                                                                                                                                  
Investments and Other Assets                                                                                                      
  Accounts receivable - noncurrent ....................                                                                           
  Unconsolidated affiliates ...........................                                                                           
  Assets held for sale ................................                                                                           
  Other ...............................................                                                                           
                                                                                                                                  
Total Investments and Other Assets ....................                                                                           
                                                                                                                                  
                                                                                                                                  
Investments in Subsidiaries                                                                                                       
  Capital stock .......................................                                                                           
  Equity in undistributed earnings of                                                                                             
   subsidiaries .......................................                                                                           
  Notes receivable ....................................                                                                           
  Other investments ...................................                                                                           
                                                                                                                                  
Total Investments in Subsidiaries .....................                                                                           
                                                                                                                                  
                                                                                                                                  
Current Assets                                                                                                                    
  Cash and temporary cash investments .................                                                                           
  Accounts receivable, net ............................                                                                           
    Customers .........................................                                                                           
    Intercompany ......................................                                                                           
    Other .............................................                                                                           
  Income tax refunds ..................................                                                                           
  Gas inventory .......................................                                                                           
  Other inventories, at average cost ..................                                                                           
  Prepayments .........................................                                                                           
  Regulatory assets ...................................                                                                           
  Other ...............................................                                                                           
                                                                                                                                  
Total Current Assets ..................................                                                                           
                                                                                                                                  
                                                                                                                                  
Deferred Charges ......................................                                                                           
Long-term Regulatory Assets ...........................                                                                           
                                                                                                                                  
                                                                                                                                  
TOTAL ASSETS ..........................................                                                                           
                                                                                                                                  
</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   78
<TABLE>
<CAPTION>
    F-1F (2 of 2)
                                               COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                                           Columbia Natural Resources, Inc. and Subsidiary
                                         Consolidating Balance Sheet as of December 31, 1997
                                      (Not covered by Report of Independent Public Accountants)
                                                            ($ Thousands)
                                                                                                           Consoli-
                                                                                                            dating               CNR
            CAPITALIZATION AND LIABILITIES                      CNR           Alamco        Combined        Entries     Consolidated
                                                             --------        --------       --------        --------       --------
<S>                                                          <C>             <C>            <C>            <C>          <C>
Capitalization
  Common Stock Equity
    Columbia Energy Group - common stock,
     $10 par value (55,495,460 shares outstanding) ...                                                                             
    Subsidiaries - common stock ......................                                                                             
    Additional paid in capital .......................                                                                             
    Retained earnings ................................                                                                             
    Unearned employee compensation ...................                                                                             
                                                                                                                                   
                                                                                                                                   
  Total common stock equity ..........................                                                                             
                                                                                                                                   
  Long-term debt .....................................                                                                             
  Installment promissory notes payable ...............                                                                             
  Other intercompany notes and loans .................                                                                             
                                                                                                                                   
                                                                                                                                   
Total Capitalization .................................                                                                             
                                                                                                                                   
                                                                                                                                   
Current Liabilities                                                                                                                
  Debt obligations ...................................                                                                             
  Debtor-in-possession financing .....................                                                                             
  Accounts and drafts payable ........................                                                                             
  Intercompany notes and loans - current maturities                                                                                
  Intercompany short-term loans ......................                                                                             
  Intercompany accounts payable ......................                                                                             
  Accrued taxes ......................................                                                                             
  Accrued interest ...................................                                                                             
  Estimated rate refunds .............................                                                                             
  Estimated supplier obligations .....................                                                                             
  Transportation and exchange gas payable ............                                                                             
  Deferred income taxes ..............................
  Regulatory liabilities .............................                                                                             
  Other ..............................................                                                                             
                                                                                                                                   
Total Current Liabilities ............................                                                                             
                                                                                                                                   
                                                                                                                                   
Other Liabilities and Deferred Credits                                                                                             
  Deferred income taxes, noncurrent ..................                                                                             
  Investment tax credits .............................                                                                             
  Postretirement benefits other than pensions ........                                                                             
  Long-term regulatory liabilities ...................                                                                             
  Other ..............................................                                                                             
                                                                                                                                   
                                                                                                                                   
Total Other Liabilities and Deferred Credits .........                                                                             
                                                                                                                                   
                                                                                                                                   
                                                                                                                                   
TOTAL CAPITALIZATION AND LIABILITIES .................                                                                             
                                                                                                                                   
</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   79
F-1G (1 of 2)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                          Alamco, Inc and Subsidiaries
               Consolidating Balance Sheet as of December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                             Consoli-
                                                                                                              dating       Alamco
          ASSETS                                         Alamco   Hawg Hauling  Alamco - Delaware  Combined   Entries   Consolidated
          ------                                         ------   ------------  -----------------  --------   -------   ------------

<S>                                                    <C>        <C>           <C>                <C>        <C>        <C>
Property, Plant and Equipment
  Gas utility and other plant, at original cost ....   
  Accumulated depreciation and depletion ...........   
                                                       
                                                       
  Net Gas Utility and Other Plant ..................   
                                                       
                                                       
                                                       
  Gas and oil producing properties, full cost method   
  Accumulated depletion ............................   
                                                       
                                                       
  Net Gas and Oil Producing Properties .............   
                                                       
                                                       
Net Property, Plant, and Equipment .................   
                                                       
                                                       
                                                       
Investments and Other Assets .......................   
  Accounts receivable - noncurrent .................   
  Unconsolidated affiliates ........................   
  Assets held for sale .............................   
  Other   ..........................................   
                                                       
                                                       
Total Investments and Other Assets .................   
                                                       
                                                       
Investments in Subsidiaries                            
  Capital stock ....................................   
  Equity in undistributed earnings of                  
   subsidiaries ....................................   
  Notes receivable .................................   
  Other investments ................................   
                                                       
                                                       
Total Investments in Subsidiaries ..................   
                                                       
                                                       
Current Assets .....................................   
  Cash and temporary cash investments ..............   
  Accounts receivable, net .........................   
    Customers ......................................   
    Intercompany ...................................   
    Other ..........................................   
  Income tax refunds ...............................   
  Gas inventory ....................................   
  Other inventories, at average cost ...............   
  Prepayments ......................................   
  Regulatory assets ................................   
  Other ............................................   
                                                       
                                                       
Total Current Assets ...............................   
                                                       
                                                       
Deferred Charges ...................................   
Long-term Regulatory Assets ........................   
                                                       
                                                       
TOTAL ASSETS .......................................   
                                                       
</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED

<PAGE>   80
F-1G (2 of 2)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                          Alamco, Inc and Subsidiaries
               Consolidating Balance Sheet as of December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                             Consoli-
                                                                                                               dating     Alamco
      CAPITALIZATION AND LIABILITIES                     Alamco  Hawg Hauling  Alamco - Delaware  Combined     Entries  Consolidated
                                                         ------  ------------  -----------------  --------     -------  ------------
<S>                                                      <C>     <C>           <C>                <C>        <C>        <C>
Capitalization
  Common Stock Equity
    Columbia Energy Group - common stock,
     $10 par value (55,495,460 shares outstanding)   
    Subsidiaries - common stock ...................  
    Additional paid in capital ....................  
    Retained earnings .............................  
    Unearned employee compensation ................  
                                                     

  Total common stock equity .......................  
  Long-term debt ..................................  
  Installment promissory notes payable ............  
  Other intercompany notes and loans ..............  
                                                     

Total Capitalization ..............................  
                                                     

Current Liabilities
  Debt obligations ................................  
  Debtor-in-possession financing........ ..........  
  Accounts and drafts payable .....................  
  Intercompany notes and loans - current maturities
  Intercompany short-term loans ...................  
  Intercompany accounts payable ...................  
  Accrued taxes ...................................  
  Accrued interest ................................  
  Estimated rate refunds ..........................  
  Estimated supplier obligations ..................  
  Transportation and exchange gas payable .........  
  Deferred income taxes ...........................  
  Regulatory liabilities ..........................  
  Other ...........................................  
                                                     

Total Current Liabilities .........................  
                                                     

Other Liabilities and Deferred Credits
  Income taxes, noncurrent ........................  
  Investment tax credits ..........................  
  Postretirement benefits other than pensions .....  
  Long-term regulatory liabilities ................  
  Other ...........................................  
                                                     

Total Other Liabilities and Deferred Credits ......  
                                                     


TOTAL CAPITALIZATION AND LIABILITIES ..............  
                                                     
</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   81
    F-2 (1 of 2)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES

           Consolidating Balance Sheet Entries as of December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                            Entry No. 1     Entry No. 2
                                                                            Eliminate       Eliminate      Entry No. 3
                                                                            Intercompany    Subsidiary     Consolidating
                                                                Total       Transactions    Equity         Adjustments
                                                                -----       ------------    ------         -----------

<S>                                                        <C>             <C>             <C>             <C>
                             ASSETS
    Property, Plant and Equipment

      Gas utility and other plant, at original cost ..   
      Accumulated depreciation and depletion .........   
                                                         
      Net Gas Utility and Other Plant ................   
                                                         

      Gas and oil producing properties, full cost 
        method .......................................   
      Accumulated depletion ..........................   
                                                         
      Net Oil and Gas Producing Properties ...........   
                                                         

    Net Property, Plant, and Equipment ...............   
                                                         

    Investments and Other Assets
      Accounts receivable - noncurrent ...............   
      Unconsolidated affiliates ......................   
      Assets held for sale ...........................   
      Other ..........................................   
                                                         
    Total Investments and Other Assets ...............   
                                                         

    Investments in Subsidiaries
      Capital stock ..................................   
      Equity in undistributed earnings of
       subsidiaries ..................................   
      Notes receivable ...............................   
      Other investments ..............................   
                                                         
    Total Investments in Subsidiaries ................   
                                                         

    Current Assets
      Cash and temporary cash investments ............   
      Accounts receivable, net
        Customers ....................................   
        Intercompany .................................   
        Other ........................................   
      Income tax refunds .............................   
      Gas inventory ..................................   
      Other inventories, at average cost .............   
      Prepayments ....................................   
      Regulatory assets ..............................   
      Underrecovered gas costs .......................   
      Prepaid property tax ...........................   
      Exchange gas receivable ........................   
      Other ..........................................   
                                                         
    Total Current Assets .............................   
                                                         

    Deferred Charges .................................   
    Long-term Regulatory Assets ......................   
                                                         

    TOTAL ASSETS .....................................   
                                                         
</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   82
F-2 (2 of 2)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES

           Consolidating Balance Sheet Entries as of December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                      Entry No. 1         Entry No. 2
                                                                      Eliminate           Eliminate      Entry No. 3
                                                                      Intercompany        Subsidiary     Consolidating
                                                            Total     Transactions        Equity         Adjustments
                                                            -----     ------------        ------         -----------

           CAPITALIZATION AND LIABILITIES
<S>                                                     <C>           <C>              <C>               <C>
Capitalization
  Common Stock Equity
    Columbia Energy Group - common stock,
     $10 par value (55,495,460 shares outstanding)...  
    Subsidiaries - common stock .....................  
    Additional paid in capital ......................  
    Retained earnings ...............................  
    Unearned employee compensation ..................  
                                                       

  Total common stock equity .........................  
                                                       

  Preferred stock ...................................  
  Long-term debt ....................................  
  Installment promissory notes payable ..............  
  Other intercompany notes and loans ................  
                                                       

Total Capitalization ................................  
                                                       

Current Liabilities
  Short-term debt ...................................  
  Debt obligations ..................................  
  Accounts and drafts payable .......................  
  Intercompany notes and loans - current maturities..  
  Intercompany short-term loans .....................  
  Intercompany accounts payable .....................  
  Accrued taxes .....................................  
  Accrued interest ..................................  
  Estimated rate refunds ............................  
  Estimated supplier obligations ....................  
  Overrecovered gas costs ...........................  
  Transportation and exchange gas payable ...........  
  Deferred income taxes .............................  
  Regulatory liabilities ............................  
  Other .............................................  
                                                       
Total Current Liabilities ...........................  
                                                       

Other Liabilities and Deferred Credits
  Deferred income taxes, noncurrent .................  
  Investment tax credits ............................  
  Postretirement benefits other than pensions .......  
  Long-term regulatory liabilities ..................  
  Other .............................................  
                                                       
Total Other Liabilities and Deferred Credits ........  
                                                       

TOTAL CAPITALIZATION AND LIABILITIES ................  
                                                       
</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   83
F-2A (1 of 2)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                 Columbia Electric Corporation and Subsidiaries
          Consolidating Balance Sheet Entries as of December 31, 1997
           (Not covered by Report of Independent Public Accountants)
                                 ($ Thousands)

<TABLE>
<CAPTION>
                                                                          Entry No. 1   Entry No. 2
                                                                          Eliminate     Eliminate      Entry No. 3
                                                                          Intercompany  Subsidiary     Consolidating
                                                            Total         Transactions  Equity         Adjustments
                                                           -------        -------       -------        -------
<S>                                                        <C>            <C>           <C>            <C>
ASSETS
Property, Plant and Equipment
  Gas utility and other plant, at original cost ....     
  Accumulated depreciation and depletion ...........     
                                                         
  Net Gas Utility and Other Plant ..................     
                                                         
  Gas and oil producing properties, full cost 
    method .........................................     
  Accumulated depletion ............................     
                                                         
  Net Gas and Oil Producing Properties .............     
                                                         
Net Property, Plant, and Equipment .................     
                                                         
Investments and Other Assets
  Accounts receivable - noncurrent .................     
  Unconsolidated affiliates ........................     
  Assets held for sale .............................     
  Other ............................................     
                                                         
Total Investments and Other Assets .................     
                                                         
Investments in Subsidiaries
  Capital stock ....................................     
  Equity in undistributed earnings of
  subsidiaries .....................................     
  Notes receivable .................................     
  Other investments ................................     
                                                         
Total Investments in Subsidiaries ..................     
                                                         
Current Assets
  Cash and temporary cash investments ..............     
  Accounts receivable, net
  Customers ........................................     
  Intercompany .....................................     
  Other ............................................     
  Income tax refunds ...............................     
  Gas inventory ....................................     
  Other inventories, at average cost ...............     
  Prepayments ......................................     
  Other ............................................     
                                                         
Total Current Assets ...............................     
                                                         
Deferred Charges ...................................     
                                                         
TOTAL ASSETS .......................................     
                                                         
</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   84
F-2A (2 of 2)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                 Columbia Electric Corporation and Subsidiaries
          Consolidating Balance Sheet Entries as of December 31, 1997
           (Not covered by Report of Independent Public Accountants)
                                 ($ Thousands)

<TABLE>
<CAPTION>
                                                                         Entry No. 1   Entry No. 2
                                                                         Eliminate     Eliminate      Entry No. 3
                                                                         Intercompany  Subsidiary     Consolidating
CAPITALIZATION AND LIABILITIES                             Total         Transactions  Equity         Adjustments
                                                          -------        -------       -------        -------
<S>                                                       <C>            <C>           <C>            <C>
Capitalization
  Common Stock Equity
  Columbia Energy Group - common stock,
  $10 par value (55,495,460 shares outstanding) ..... 
  Subsidiaries - common stock ....................... 
  Additional paid in capital ........................ 
  Retained earnings ................................. 
  Unearned employee compensation .................... 
                                                      
  Total common stock equity ......................... 
                                                      
  Long-term debt .................................... 
  Installment promissory notes payable .............. 
  Other intercompany notes and loans ................ 
                                                      
Total Capitalization ................................ 
                                                      
Current Liabilities
  Debt obligations .................................. 
  Accounts and drafts payable ....................... 
  Intercompany notes and loans - current maturities.. 
  Intercompany short-term loans ..................... 
  Intercompany accounts payable ..................... 
  Accrued taxes ..................................... 
  Accrued interest .................................. 
  Estimated rate refunds ............................ 
  Estimated supplier obligations .................... 
  Transportation and exchange gas payable ........... 
  Deferred income taxes ............................. 
  Other ............................................. 
                                                      
Total Current Liabilities ........................... 
                                                      
Other Liabilities and Deferred Credits
  Deferred income taxes, noncurrent ................. 
  Investment tax credits ............................ 
  Postretirement benefits other than pensions ....... 
  Other ............................................. 
                                                      
Total Other Liabilities and Deferred Credits ........ 
                                                      
TOTAL CAPITALIZATION AND LIABILITIES ................ 
                                                      
</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   85
F-2B (1 of 2)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                   Tristar Capital Corporation and Subsidiary
           Consolidating Balance Sheet Entries as of December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                             Entry No. 1    Entry No. 2
                                                                             Eliminate      Eliminate       Entry No. 3
                                                                             Intercompany   Subsidiary      Consolidating
                         ASSETS                               Total          Transactions   Equity          Adjustments
                                                             ------          ------         ------          ------
<S>                                                          <C>             <C>            <C>             <C>
Property, Plant and Equipment
  Gas utility and other plant, at original cost .......   
  Accumulated depreciation and depletion ..............   
                                                          
  Net Gas Utility and Other Plant .....................   
                                                          
  Gas and oil producing properties, full cost method ..   
  Accumulated depletion ...............................   
                                                          
  Net Gas and Oil Producing Properties ................   
                                                          
Net Property, Plant, and Equipment ....................   
                                                          
Investments and Other Assets
  Accounts receivable - noncurrent ....................   
  Unconsolidated affiliates ...........................   
  Assets held for sale ................................   
  Other ...............................................   
                                                          
Total Investments and Other Assets ....................   
                                                          
Investments in Subsidiaries
  Capital stock .......................................   
  Equity in undistributed earnings of
   subsidiaries .......................................   
  Notes receivable ....................................   
  Other investments ...................................   
                                                          
Total Investments in Subsidiaries .....................   
                                                          
Current Assets
  Cash and temporary cash investments .................   
  Accounts receivable, net
    Customers .........................................   
    Intercompany ......................................   
    Other .............................................   
  Income tax refunds ..................................   
  Gas inventory .......................................   
  Other inventories, at average cost ..................   
  Prepayments .........................................   
  Regulatory assets ...................................   
  Other ...............................................   
                                                          
Total Current Assets ..................................   
                                                          
Deferred Charges ......................................   
Long-term Regulatory Assets ...........................   
                                                          
TOTAL ASSETS ..........................................   
                                                          
</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   86
F-2B (2 of 2)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                   Tristar Capital Corporation and Subsidiary
           Consolidating Balance Sheet Entries as of December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                            Entry No. 1    Entry No. 2
                                                                            Eliminate      Eliminate       Entry No. 3
                                                                            Intercompany   Subsidiary      Consolidating
             CAPITALIZATION AND LIABILITIES                 Total           Transactions   Equity          Adjustments
                                                            ------          ------         ------          ------
<S>                                                         <C>             <C>            <C>             <C>
Capitalization
  Common Stock Equity
    Columbia Energy Group - common stock,
     $10 par value (55,495,460 shares outstanding) ...   
    Subsidiaries - common stock ......................   
    Additional paid in capital .......................   
    Retained earnings ................................   
    Unearned employee compensation ...................   
                                                         
  Total common stock equity ..........................   
                                                         
  Long-term debt .....................................   
  Installment promissory notes payable ...............   
  Other intercompany notes and loans .................   
                                                         
Total Capitalization .................................   
                                                         
Current Liabilities
  Debt obligations ...................................   
  Accounts and drafts payable ........................   
  Intercompany notes and loans - current maturities ..   
  Intercompany short-term loans ......................   
  Intercompany accounts payable ......................   
  Accrued taxes ......................................   
  Accrued interest ...................................   
  Estimated rate refunds .............................   
  Estimated supplier obligations .....................   
  Transportation and exchange gas payable ............   
  Deferred income taxes ..............................   
  Regulatory liabilities .............................   
  Other ..............................................   
                                                         
Total Current Liabilities ............................   
                                                         
Other Liabilities and Deferred Credits
  Deferred income taxes, noncurrent ..................   
  Investment tax credits .............................   
  Postretirement benefits other than pensions ........   
  Long-term regulatory liabilities ...................   
  Other ..............................................   
                                                         
Total Other Liabilities and Deferred Credits .........   
                                                         
TOTAL CAPITALIZATION AND LIABILITIES .................   
                                                         
</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   87
F-2C (1 of 2)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                     Columbia LNG Corporation and Subsidiary
           Consolidating Balance Sheet Entries as of December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                               Entry No. 1      Entry No. 2
                                                                               Eliminate        Eliminate       Entry No. 3
                                                                               Intercompany     Subsidiary      Consolidating
                       ASSETS                                  Total           Transactions     Equity          Adjustments
                                                              -------          -------          -------         -------
<S>                                                           <C>              <C>              <C>             <C>
Property, Plant and Equipment
  Gas utility and other plant, at original cost .......    
  Accumulated depreciation and depletion ..............    
                                                           
  Net Gas Utility and Other Plant .....................    
                                                           
  Gas and oil producing properties, full cost method ..    
  Accumulated depletion ...............................    
                                                           
  Net Gas and Oil Producing Properties ................    
                                                           
Net Property, Plant, and Equipment ....................    
                                                           
Investments and Other Assets
  Accounts receivable - noncurrent ....................    
  Unconsolidated affiliates ...........................    
  Assets held for sale ................................    
  Other ...............................................    
                                                           
Total Investments and Other Assets ....................    
                                                           
Investments in Subsidiaries
  Capital stock .......................................    
  Equity in undistributed earnings of
   subsidiaries .......................................    
  Notes receivable ....................................    
  Other investments ...................................    
                                                           
Total Investments in Subsidiaries .....................    
                                                           
Current Assets
  Cash and temporary cash investments .................    
  Accounts receivable, net
    Customers .........................................    
    Intercompany ......................................    
    Other .............................................    
  Income tax refunds ..................................    
  Gas inventory .......................................    
  Other inventories, at average cost ..................    
  Prepayments .........................................    
  Regulatory assets ...................................    
  Other ...............................................    
                                                           
Total Current Assets ..................................    
                                                           
Deferred Charges ......................................    
Long-term Regulatory Assets ...........................    
                                                           
TOTAL ASSETS ..........................................    
                                                           
</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   88
F-2C (2 of 2)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                     Columbia LNG Corporation and Subsidiary
           Consolidating Balance Sheet Entries as of December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                           Entry No. 1   Entry No. 2
                                                                           Eliminate     Eliminate    Entry No. 3
                                                                           Intercompany  Subsidiary   Consolidating
           CAPITALIZATION AND LIABILITIES                    Total         Transactions  Equity       Adjustments
                                                             ----          ----          ----         ----
<S>                                                          <C>           <C>           <C>          <C>
Capitalization
  Common Stock Equity
    Columbia Energy Group - common stock,
     $10 par value (55,495,460 shares outstanding) ...   
    Subsidiaries - common stock ......................   
    Additional paid in capital .......................   
    Retained earnings ................................   
    Unearned employee compensation ...................   
                                                         
  Total common stock equity ..........................   
                                                         
  Long-term debt .....................................   
  Installment promissory notes payable ...............   
  Other intercompany notes and loans .................   
                                                         
Total Capitalization .................................   
                                                         
Current Liabilities
  Debt obligations ...................................   
  Accounts and drafts payable ........................   
  Intercompany notes and loans - current maturities ..   
  Intercompany short-term loans ......................   
  Intercompany accounts payable ......................   
  Accrued taxes ......................................   
  Accrued interest ...................................   
  Estimated rate refunds .............................   
  Estimated supplier obligations .....................   
  Transportation and exchange gas payable ............   
  Deferred income taxes ..............................   
  Regulatory liabilities .............................   
  Other ..............................................   
                                                         
Total Current Liabilities ............................   
                                                         
Other Liabilities and Deferred Credits
  Deferred income taxes, noncurrent ..................   
  Investment tax credits .............................   
  Postretirement benefits other than pensions ........   
  Long-term regulatory liabilities ...................   
  Other ..............................................   
                                                         
Total Other Liabilities and Deferred Credits .........   
                                                         
TOTAL CAPITALIZATION AND LIABILITIES .................   
                                                         
</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   89

 F-1D (1 of 2)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
              Columbia Energy Services Corporation and Subsidiaries
               Consolidating Balance Sheet as of December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                  Entry No. 1    Entry No. 2
                                                                  Eliminate      Eliminate      Entry No. 3
                                                                  Intercompany   Subsidiary     Consolidating
                                                           Total  Transactions   Equity         Adjustments
                                                           -----  ------------   ------         -----------

                          ASSETS
Property, Plant and Equipment
<S>                                                      <C>      <C>            <C>            <C>
  Gas utility and other plant, at original cost ....
  Accumulated depreciation and depletion ...........

  Net Gas Utility and Other Plant ..................


  Gas and oil producing properties, full cost
    method .........................................
  Accumulated depletion ............................

  Net Gas and Oil Producing Properties .............


Net Property, Plant, and Equipment .................


Investments and Other Assets
  Accounts receivable - noncurrent .................
  Unconsolidated affiliates ........................
  Assets held for sale .............................
  Other ............................................

Total Investments and Other Assets .................


Investments in Subsidiaries
  Capital stock ....................................
  Equity in undistributed earnings of
   subsidiaries ....................................
  Notes receivable .................................
  Other investments ................................

Total Investments in Subsidiaries ..................


Current Assets
  Cash and temporary cash investments ..............
  Accounts receivable, net
    Customers ......................................
    Intercompany ...................................
    Other ..........................................
  Income tax refunds ...............................
  Gas inventory ....................................
  Other inventories, at average cost ...............
  Prepayments ......................................
  Regulatory assets ................................
  Exchange gas receivable ..........................
  Other ............................................

Total Current Assets ...............................


Deferred Charges ...................................
Long-term Regulatory Assets ........................


TOTAL ASSETS .......................................

</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   90
 F-2D (2 of 2)
                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
              Columbia Energy Services Corporation and Subsidiaries
           Consolidating Balance Sheet Entries as of December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                  Entry No. 1     Entry No. 2
                                                                  Eliminate       Eliminate      Entry No. 3
                                                                  Intercompany    Subsidiary     Consolidating
                                                          Total   Transactions    Equity         Adjustments
                                                          -----   ------------    ------         -----------
<S>                                                      <C>      <C>             <C>            <C>
       CAPITALIZATION AND LIABILITIES
Capitalization
  Common Stock Equity
    Columbia Energy Group - common stock,
     $10 par value (55,495,460 shares outstanding)
    Subsidiaries - common stock ...................
    Additional paid in capital ....................
    Retained earnings .............................
    Unearned employee compensation ................

  Total common stock equity .......................
  Long-term debt ..................................
  Installment promissory notes payable ............
  Other intercompany notes and loans ..............

Total Capitalization ..............................

Current Liabilities
  Debt obligations ................................
  Accounts and drafts payable .....................
  Intercompany notes and loans - current
    maturities.....................................
  Intercompany short-term loans ...................
  Intercompany accounts payable ...................
  Accrued taxes ...................................
  Accrued interest ................................
  Estimated rate refunds ..........................
  Estimated supplier obligations ..................
  Transportation and exchange gas payable .........
  Deferred income taxes ...........................
  Regulatory liabilities ..........................
  Other ...........................................

Total Current Liabilities .........................


Other Liabilities and Deferred Credits
  Income taxes, noncurrent ........................
  Investment tax credits ..........................
  Postretirement benefits other than pensions .....
  Long-term regulatory liabilities ................
  Other ...........................................

Total Other Liabilities and Deferred Credits ......


TOTAL CAPITALIZATION AND LIABILITIES ..............

</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   91
F-2E (1 of 2)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
              Columbia Network Services Corporation and Subsidiary
           Consolidated Balance Sheet Entries as of December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                               Entry No. 1   Entry No. 2
                                                               Eliminate     Eliminate     Entry No. 3
                                                               Intercompany  Subsidiary    Consolidating
                        ASSETS                          Total  Transactions  Equity        Adjustments
                                                        -----  ------------  ------        -----------
<S>                                                     <C>    <C>           <C>           <C>
Property, Plant and Equipment
  Gas utility and other plant, at original cost ....
  Accumulated depreciation and depletion ...........

  Net Gas Utility and Other Plant ..................


  Gas and oil producing properties, full cost
   method ..........................................
  Accumulated depletion ............................

  Net Gas and Oil Producing Properties .............


Net Property, Plant, and Equipment .................


Investments and Other Assets
  Accounts receivable - noncurrent .................
  Unconsolidated affiliates ........................
  Assets held for sale .............................
  Other ............................................


Total Investments and Other Assets .................


Investments in Subsidiaries
  Capital stock ....................................
  Equity in undistributed earnings of
   subsidiaries ....................................
  Notes receivable .................................
  Other investments ................................


Total Investments in Subsidiaries ..................


Current Assets
  Cash and temporary cash investments ..............
  Accounts receivable, net
    Customers ......................................
    Intercompany ...................................
    Other ..........................................
  Income tax refunds ...............................
  Gas inventory ....................................
  Other inventories, at average cost ...............
  Prepayments ......................................
  Regulatory assets ................................
  Other ............................................


Total Current Assets ...............................


Deferred Charges ...................................
Long-term Regulatory Assets ........................


TOTAL ASSETS .......................................

</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   92
F-2F (1 of 2)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                 Columbia Natural Resources, Inc. and Subsidiary
           Consolidating Balance Sheet Entries as of December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                 Entry No. 1         Entry No. 2
                                                                                 Eliminate           Eliminate        Entry No. 3
                                                                                 Intercompany        Subsidiary       Consolidating
                                 ASSETS                          Total           Transactions        Equity           Adjustments
                                 ------                          -----           ------------        ------           -----------
<S>                                                              <C>                  <C>            <C>                   <C>
Property, Plant and Equipment
  Gas utility and other plant, at original cost ....
  Accumulated depreciation and depletion ...........

  Net Gas Utility and Other Plant ..................

  Gas and oil producing properties, full cost
    method ..........................................
  Accumulated depletion ............................

  Net Gas and Oil Producing Properties .............

Net Property, Plant, and Equipment .................


Investments and Other Assets
  Accounts receivable - noncurrent .................
  Unconsolidated affiliates ........................
  Assets held for sale .............................
  Other ............................................

Total Investments and Other Assets .................


Investments in Subsidiaries
  Capital stock ....................................
  Equity in undistributed earnings of
   subsidiaries ....................................
  Notes receivable .................................
  Other investments ................................

Total Investments in Subsidiaries ..................


Current Assets
  Cash and temporary cash investments ..............
  Accounts receivable, net
    Customers ......................................
    Intercompany ...................................
    Other ..........................................
  Income tax refunds ...............................
  Gas inventory ....................................
  Other inventories, at average cost ...............
  Prepayments ......................................
  Regulatory assets ................................
  Other ............................................

Total Current Assets ...............................

Deferred Charges ...................................
Long-term Regulatory Assets ........................


TOTAL ASSETS .......................................

</TABLE>
                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   93
F-2F (2 of 2)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                 Columbia Natural Resources, Inc. and Subsidiary
           Consolidating Balance Sheet Entries as of December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                Entry No. 1        Entry No. 2
                                                                                Eliminate          Eliminate          Entry No. 3
                                                                                Intercompany       Subsidiary         Consolidating
                     CAPITALIZATION AND LIABILITIES              Total          Transactions       Equity             Adjustments
                     ------------------------------              -----          ------------       ------             -----------
<S>                                                             <C>             <C>                   <C>                   <C>
Capitalization
  Common Stock Equity
    Columbia Energy Group - common stock,
     $10 par value (55,495,460 shares outstanding)
    Subsidiaries - common stock ...................
    Additional paid in capital ....................
    Retained earnings .............................
    Unearned employee compensation ................


  Total common stock equity .......................


  Long-term debt ..................................
  Installment promissory notes payable ............
  Other intercompany notes and loans ..............


Total Capitalization ..............................


Current Liabilities
  Debt obligations ................................
  Accounts and drafts payable .....................
  Intercompany notes and loans - current
    maturities ....................................
  Intercompany short-term loans ...................
  Intercompany accounts payable ...................
  Accrued taxes ...................................
  Accrued interest ................................
  Estimated rate refunds ..........................
  Estimated supplier obligations ..................
  Transportation and exchange gas payable .........
  Deferred income taxes ...........................
  Regulatory liabilities ..........................
  Other ...........................................

Total Current Liabilities .........................


Other Liabilities and Deferred Credits
  Deferred income taxes, noncurrent ...............
  Investment tax credits ..........................
  Postretirement benefits other than pensions .....
  Long-term regulatory liabilities ................
  Other ...........................................

Total Other Liabilities and Deferred Credits ......


TOTAL CAPITALIZATION AND LIABILITIES ..............

</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   94
F-2G (1 of 2)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                          Alamco, Inc. and Subsidiaries
           Consolidating Balance Sheet Entries as of December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                           Entry No. 3
                                                                            Entry No. 1     Entry No. 2    Adjust to
                                                                            Eliminate       Eliminate      Consoli-     Entry No. 4
                                                                            Intercompany    Subsidiary     dated Full   Elimination/
                                ASSETS                         Total        Transactions    Equity         Cost Pool    Adjustments
                                                               -----        ------------    ------         ---------    -----------
<S>                                                            <C>          <C>             <C>            <C>          <C>
Property, Plant and Equipment
  Gas utility and other plant, at original cost .....
  Accumulated depreciation and depletion ............

  Net Gas Utility and Other Plant ...................

  Gas and oil producing properties, full cost method
  Accumulated depletion .............................

  Net Gas and Oil Producing Properties ..............


Net Property, Plant, and Equipment ..................



Investments and Other Assets
  Accounts receivable - noncurrent ..................
  Unconsolidated affiliates .........................
  Assets held for sale ..............................
  Other .............................................


Total Investments and Other Assets ..................



Investments in Subsidiaries
  Capital stock .....................................
  Equity in undistributed earnings of
   subsidiaries .....................................
  Notes receivable ..................................
  Other investments .................................


Total Investments in Subsidiaries ...................



Current Assets
  Cash and temporary cash investments ...............
  Accounts receivable, net
    Customers .......................................
    Intercompany ....................................
    Other ...........................................
  Income tax refunds ................................
  Gas inventory .....................................
  Other inventories, at average cost ................
  Prepayments .......................................
  Regulatory assets .................................
  Other .............................................


Total Current Assets ................................


Deferred Charges ....................................
Long-term Regulatory Assets .........................


TOTAL ASSETS ........................................

</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED

<PAGE>   95
F-2G (2 of 2)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                          Alamco, Inc. and Subsidiaries
           Consolidating Balance Sheet Entries as of December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                       Entry No. 3
                                                                          Entry No. 1    Entry No. 2   Adjust to
                                                                          Eliminate      Eliminate     Consoli-         Entry No. 4
                                                                          Intercompany   Subsidiary    dated Full       Elimination/
                    CAPITALIZATION AND LIABILITIES           Total        Transactions   Equity        Cost Pool        Adjustments
                                                             -----        ------------   ------        ---------        -----------
<S>                                                          <C>          <C>            <C>           <C>              <C>
Capitalization
  Common Stock Equity
    Columbia Energy Group - common stock,
     $10 par value (55,495,460 shares
       outstanding) ...............................
    Subsidiaries - common stock ...................
    Additional paid in capital ....................
    Retained earnings .............................
    Unearned employee compensation ................


  Total common stock equity .......................
  Long-term debt ..................................
  Installment promissory notes payable ............
  Other intercompany notes and loans ..............


Total Capitalization ..............................


Current Liabilities
  Debt obligations ................................
  Accounts and drafts payable .....................
  Intercompany notes and loans - current
    maturities ....................................
  Intercompany short-term loans ...................
  Intercompany accounts payable ...................
  Accrued taxes ...................................
  Accrued interest ................................
  Estimated rate refunds ..........................
  Estimated supplier obligations ..................
  Transportation and exchange gas payable .........
  Deferred income taxes ...........................
  Regulatory liabilities ..........................
  Other ...........................................


Total Current Liabilities .........................


Other Liabilities and Deferred Credits
  Income taxes, noncurrent ........................
  Investment tax credits ..........................
  Postretirement benefits other than pensions .....
  Long-term regulatory liabilities ................
  Other ...........................................


Total Other Liabilities and Deferred Credits ......


TOTAL CAPITALIZATION AND LIABILITIES ..............

</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   96
F-3  (1 of 5)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES

                        Consolidating Statement of Income
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                           Consoli-
                                             F-3           F-3           F-3        F-3                     dating      Consoli-
                                           Page 2        Page 3        Page 4      Page 5    Combined       Entries      dated
                                         ----------    ----------    ----------    ------    ----------    --------    ----------
<S>                                      <C>           <C>           <C>           <C>       <C>           <C>         <C>
Operating Revenues
  Gas sales ..........................                                                                                  4,286,717
  Transportation .....................                                                                                    531,526
  Storage ............................                                                                                     90,593
  Other ..............................                                                                                    144,817
                                                                                                                       ----------
Total Operating Revenues .............                                                                                  5,053,653
                                                                                                                       ----------
                                                                                                                     
Operating Expenses                                                                                                   
  Products purchased .................                                                                                  3,138,072
  Operation ..........................                                                                                    862,076
  Maintenance ........................                                                                                    100,203
  Depreciation and depletion .........                                                                                    221,313
  Other taxes ........................                                                                                    222,561
                                                                                                                       ----------
Total Operating Expenses .............                                                                                  4,544,225
                                                                                                                       ----------
                                                                                                                     
Operating Income (Loss) ..............                                                                                    509,428
                                                                                                                       ----------
                                                                                                                     
Other Income (Deductions)                                                                                            
  Interest income and other, net .....                                                                                     40,398
  Interest expense and related                                                                                       
   charges ...........................                                                                                   (157,560)
                                                                                                                       ----------
Total Other Income (Deductions) ......                                                                                   (117,162)
                                                                                                                       ----------
                                                                                                                     
Income (Loss) before Income Taxes ....                                                                                    392,266
                                                                                                                     
Income Taxes .........................                                                                                    118,930
                                                                                                                       ----------
                                                                                                                     
Net Income (Loss) ....................                                                                                    273,336
                                                                                                                       ==========
</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   97
F-3  (2 of 5)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES

                        Consolidating Statement of Income
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)


<TABLE>
<CAPTION>
                                                                                                                      F-3 Page 2
                                             CNR (a)         TCO            CGT          CLG (a)         CKY            Total
                                            --------       --------       --------       -------       --------       ----------
<S>                                         <C>            <C>            <C>            <C>           <C>            <C>
Operating Revenues
  Gas sales ..........................                        3,235             --                      147,490
  Transportation .....................                      489,140        133,135                        8,381
  Storage ............................                      179,850             --                           --
  Other ..............................                       26,175          8,397                          386
                                                           --------       --------                     --------
Total Operating Revenues .............                      698,400        141,532                      156,257
                                                           --------       --------                     --------
Operating Expenses
  Products purchased .................                        2,119             --                       93,413
  Operation ..........................                      302,593         65,633                       27,948
  Maintenance ........................                       38,078         16,122                        2,885
  Depreciation and depletion .........                       81,192         23,133                        6,704
  Other taxes ........................                       44,878          7,881                        2,184
                                                           --------       --------                     --------
Total Operating Expenses .............                      468,860        112,769                      133,134
                                                           --------       --------                     --------
Operating Income (Loss) ..............                      229,540         28,763                       23,123
                                                           --------       --------                     --------
Other Income (Deductions)
  Interest income and other, net .....                       25,109            635                          150
  Interest expense and related
    charges ..........................                      (46,061)        (5,370)                      (4,617)
                                                           --------       --------                     --------
Total Other Income (Deductions) ......                      (20,952)        (4,735)                      (4,467)
                                                           --------       --------                     --------

Income (Loss) before Income Taxes ....                      208,588         24,028                       18,656

Income Taxes .........................                       64,495          8,700                        7,017
                                                           --------       --------                     --------

Net Income (Loss) ....................                      144,093         15,328                       11,639
                                                           ========       ========                     ========
</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   98
F-3  (3 of 5)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES

                        Consolidating Statement of Income
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                                        F-3 Page 3
                                                COH            CMD           CPA            COS             CG            Total
                                            ----------       -------       --------       --------       --------       ----------
<S>                                         <C>              <C>           <C>            <C>            <C>             <C>
Operating Revenues
  Gas sales ..........................       1,340,113        49,981        426,185        183,761
  Transportation .....................          83,323         2,978         36,358         12,136
  Storage ............................              --            --             --             --
  Other ..............................           2,302           153            661          2,103
                                            ----------       -------       --------       --------
Total Operating Revenues .............       1,425,738        53,112        463,204        198,000
                                            ----------       -------       --------       --------
Operating Expenses
  Products purchased .................         901,298        32,690        263,441        107,354
  Operation ..........................         233,711         8,698         91,655         38,654
  Maintenance ........................          19,674         1,263          8,419          8,068
  Depreciation and depletion .........          44,918         2,700         14,714          9,206
  Other taxes ........................         116,164         1,911         25,685          8,744
                                            ----------       -------       --------       --------
Total Operating Expenses .............       1,315,765        47,262        403,914        172,026
                                            ----------       -------       --------       --------
Operating Income (Loss) ..............         109,973         5,850         59,290         25,974
                                            ----------       -------       --------       --------
Other Income (Deductions)
  Interest income and other, net .....             759            41            (15)           379
  Interest expense and related
    charges ..........................         (29,039)       (1,438)       (13,455)        (8,889)
                                            ----------       -------       --------       --------
Total Other Income (Deductions) ......         (28,280)       (1,397)       (13,470)        (8,510)
                                            ----------       -------       --------       --------

Income (Loss) before Income Taxes ....          81,693         4,453         45,820         17,464

Income Taxes .........................          29,267         1,400         15,265          5,337
                                            ----------       -------       --------       --------

Net Income (Loss) ....................          52,426         3,053         30,555         12,127
                                            ==========       =======       ========       ========
</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED

<PAGE>   99
F-3  (4 of 5)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES

                        Consolidating Statement of Income
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)


<TABLE>
<CAPTION>
                                                                                                                  F-3 Page 4
                                               CS          CIC         CES (a)          CPC         TVC (a)         Total
                                            -------       -----      ----------       -------       -------       ----------
<S>                                         <C>           <C>        <C>              <C>           <C>           <C>
Operating Revenues
  Gas sales ..........................
  Transportation .....................
  Storage ............................
  Other ..............................

Total Operating Revenues .............


Operating Expenses
  Products purchased .................
  Operation ..........................
  Maintenance ........................
  Depreciation and depletion .........
  Other taxes ........................

Total Operating Expenses .............


Operating Income (Loss) ..............


Other Income (Deductions)
  Interest income and other, net .....
  Interest expense and related
    charges ..........................

Total Other Income (Deductions) ......


Income (Loss) before Income Taxes ....

Income Taxes .........................


Net Income (Loss) ....................

</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED


<PAGE>   100
F-3  (5 of 5)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES

                        Consolidating Statement of Income
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                    F-3 Page 5
                                                 TCC (a)           CAT             CNS (a)            Total
                                                 ------            ---             ------             ------
<S>                                              <C>               <C>             <C>                <C>
Operating Revenues
  Gas sales ..........................
  Transportation .....................
  Storage ............................
  Other ..............................

Total Operating Revenues .............

Operating Expenses
  Products purchased .................
  Operation ..........................
  Maintenance ........................
  Depreciation and depletion .........
  Other taxes ........................

Total Operating Expenses .............

Operating Income (Loss) ..............

Other Income (Deductions)
  Interest income and other, net .....
  Interest expense and related
    charges ..........................

Total Other Income (Deductions) ......


Income (Loss) before Income Taxes ....

Income Taxes .........................


Net Income (Loss) ....................

</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED

<PAGE>   101
F-3A (1 of 3)
                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                 Columbia Electric Corporation and Subsidiaries
                        Consolidating Statement of Income
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)



<TABLE>
<CAPTION>

                                               F-3A           F-3A                      Consolidating       TVC
                                              Page 2         Page 3       Combined         Entries     Consolidated
                                              ------         ------       --------         -------     ------------
<S>                                           <C>            <C>        <C>               <C>          <C>
Operating Revenues
  Gas sales ............................
  Transportation .......................
  Storage ..............................
  Other ................................


Total Operating Revenues ...............


Operating Expenses
  Products purchased ...................
  Operation ............................
  Maintenance ..........................
  Depreciation and depletion ...........
  Other taxes ..........................


Total Operating Expenses ...............



Operating Income (Loss) ................


Other Income (Deductions)
  Interest income and other, net .......
  Interest expense and related charges..


Total Other Income (Deductions) ........



Income (Loss) before Income Taxes ......
Income Taxes ...........................



Net Income (Loss) ......................


</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED

<PAGE>   102

F-3A (2 of 3)
                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                 Columbia Electric Corporation and Subsidiaries
                        Consolidating Statement of Income
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>

                                                                                                                        F-3A Page 2
                                                BGC          BLC      GGC    GLC        PGC         PLC        TVC        Total
                                                ---          ---      ---    ---        ---         ---        ---        -----
<S>                                          <C>          <C>        <C>    <C>       <C>         <C>        <C>        <C>
Operating Revenues
  Gas sales ..........................
  Transportation .....................
  Storage ............................
  Other ..............................


Total Operating Revenues .............


Operating Expenses
  Products purchased .................
  Operation ..........................
  Maintenance ........................
  Depreciation and depletion .........
  Other taxes ........................


Total Operating Expenses .............



Operating Income (Loss) ..............


Other Income (Deductions)
  Interest income and other, net .....
  Interest expense and related charges


Total Other Income (Deductions) ......



Income (Loss) before Income Taxes ....
Income Taxes .........................



Net Income (Loss) ....................

</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED


<PAGE>   103


F-3A (3 of 3)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                 Columbia Electric Corporation and Subsidiaries
                        Consolidating Statement of Income
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>

                                                                                                           F-3A Page 3
                                               VGC          VLC          RL         FC      TVC9   TVC10      Total
                                               ---          ---          --         --      ----   -----      -----
<S>                                          <C>          <C>          <C>         <C>     <C>     <C>     <C>
Operating Revenues
  Gas sales ..........................
  Transportation .....................
  Storage ............................
  Other ..............................


Total Operating Revenues .............


Operating Expenses
  Products purchased .................
  Operation ..........................
  Maintenance ........................
  Depreciation and depletion .........
  Other taxes ........................


Total Operating Expenses .............



Operating Income (Loss) ..............


Other Income (Deductions)
  Interest income and other, net .....
  Interest expense and related charges


Total Other Income (Deductions) ......



Income (Loss) before Income Taxes ....
Income Taxes .........................



Net Income (Loss) ....................

</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED



<PAGE>   104

F-3B (1 of 1)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                   Tristar Capital Corporation and Subsidiary
                        Consolidating Statement of Income
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>

                                                                             Consoli-
                                                                               dating            TCC
                                             TGT        TCC       Combined    Entries   Consolidated
                                             ---        ---       --------    -------   ------------
<S>                                          <C>        <C>       <C>        <C>        <C>
Operating Revenues
  Gas sales ..........................
  Transportation .....................
  Storage ............................
  Other ..............................

Total Operating Revenues .............


Operating Expenses
  Products purchased .................
  Operation ..........................
  Maintenance ........................
  Depreciation and depletion .........
  Other taxes ........................

Total Operating Expenses .............


Operating Income (Loss) ..............


Other Income (Deductions)
  Interest income and other, net .....
  Interest expense and related charges


Total Other Income (Deductions) ......


Income (Loss) before Income Taxes ....
Income Taxes .........................


Net Income (Loss) ....................

</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED


<PAGE>   105

F-3C (1 of 1)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                     Columbia LNG Corporation and Subsidiary
                        Consolidating Statement of Income
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>

                                                                                        Consoli-
                                                                                          dating          CLG
                                              CLNG           CLG          Combined       Entries     Consolidated
                                              ----           ---          --------       -------     ------------
<S>                                          <C>           <C>            <C>           <C>          <C>
Operating Revenues
  Gas sales ..........................
  Transportation .....................
  Storage ............................
  Other ..............................


Total Operating Revenues .............


Operating Expenses
  Products purchased .................
  Operation ..........................
  Maintenance ........................
  Depreciation and depletion .........
  Other taxes ........................


Total Operating Expenses .............



Operating Income (Loss) ..............


Other Income (Deductions)
  Interest income and other, net .....
  Interest expense and related charges


Total Other Income (Deductions) ......



Income (Loss) before Income Taxes ....
Income Taxes .........................


Net Income (Loss) ....................

</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED




<PAGE>   106


 F-3D (1 of 1)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
             Columbia Energy Services Corporation and Subsidiaries
             Consolidating Income Statement as of December 31, 1997

            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>


                                                 CEM              CPM                CSP               CES              Combined
                                                 ---              ---                ---               ---              --------
<S>                                          <C>               <C>               <C>               <C>               <C>
Operating Revenues
  Gas sales ..........................
  Transportation .....................
  Storage ............................
  Other ..............................

Total Operating Revenues .............


Operating Expenses
  Products purchased .................
  Operation ..........................
  Maintenance ........................
  Depreciation and depletion .........
  Other taxes ........................

Total Operating Expenses .............


Operating Income (Loss) ..............


Other Income (Deductions)
  Interest income and other, net .....
  Interest expense and related charges

Total Other Income (Deductions) ......


Income (Loss) before Income Taxes ....
Income Taxes .........................


Net Income (Loss) ....................

</TABLE>
                        CONFIDENTIAL TREATMENT REQUESTED


<TABLE>
<CAPTION>


                                          Consoli-
                                            dating                 CES
                                           Entries        Consolidated
                                           -------        ------------
<S>                                      <C>              <C>
Operating Revenues
  Gas sales ..........................
  Transportation .....................
  Storage ............................
  Other ..............................

Total Operating Revenues .............


Operating Expenses
  Products purchased .................
  Operation ..........................
  Maintenance ........................
  Depreciation and depletion .........
  Other taxes ........................

Total Operating Expenses .............


Operating Income (Loss) ..............


Other Income (Deductions)
  Interest income and other, net .....
  Interest expense and related charges

Total Other Income (Deductions) ......


Income (Loss) before Income Taxes ....
Income Taxes .........................


Net Income (Loss) ....................

</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED



<PAGE>   107


F-3E (1 of 1)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
              Columbia Network Services Corporation and Subsidiary
                        Consolidating Statement of Income
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>

                                                                                   Consoli-
                                                                                     dating            CNS
                                              CMC           CNS         Combined    Entries   Consolidated
                                              ---           ---         --------    -------   ------------
<S>                                          <C>           <C>          <C>         <C>       <C>
Operating Revenues
  Gas sales ..........................    
  Transportation .....................    
  Storage ............................    
  Other ..............................    
                                          
                                          
Total Operating Revenues .............    
                                          
                                          
Operating Expenses                        
  Products purchased .................    
  Operation ..........................    
  Maintenance ........................    
  Depreciation and depletion .........    
  Other taxes ........................    
                                          
                                          
Total Operating Expenses .............    
                                          
                                          
Operating Income (Loss) ..............    
                                          
                                          
Other Income (Deductions)                 
  Interest income and other, net .....    
  Interest expense and related charges    
                                          
                                          
Total Other Income (Deductions) ......    
                                          
                                          
                                          
Income (Loss) before Income Taxes ....    
Income Taxes .........................    
                                          
                                          
Net Income (Loss) ....................    
                                          
</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   108


F-3F (1 of 1)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                 Columbia Natural Resources, Inc. and Subsidiary
                        Consolidating Statement of Income
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)


<TABLE>
<CAPTION>
                                                                                      Consoli-
                                                                                        dating               CNR
                                               CNR          Alamco      Combined       Entries      Consolidated
                                               ---          ------      --------       -------      ------------
<S>                                          <C>           <C>          <C>           <C>           <C>
Operating Revenues
  Gas sales ..........................                                                                 99,469
  Transportation .....................                                                                   --
  Storage ............................                                                                   --
  Other ..............................                                                                 13,824
                                                                                                      -------
Total Operating Revenues .............                                                                113,293
                                                                                                      -------
                                                                                                 
Operating Expenses                                                                               
  Products purchased .................                                                                   --
  Operation ..........................                                                                 45,181
  Maintenance ........................                                                                    568
  Depreciation and depletion .........                                                                 27,564
  Other taxes ........................                                                                  9,068
                                                                                                      -------
Total Operating Expenses .............                                                                 82,381
                                                                                                      -------
                                                                                                 
Operating Income (Loss) ..............                                                                 30,912
                                                                                                      -------
                                                                                                 
Other Income (Deductions)                                                                        
  Interest income and other, net .....                                                                        
  Interest expense and related charges                                                                        
                                                                                                              
                                                                                                              
Total Other Income (Deductions) ......                                                                        
                                                                                                              
                                                                                                              
Income (Loss) before Income Taxes ....                                                                        
Income Taxes .........................                                                                        
                                                                                                              
                                                                                                              
Net Income (Loss) ....................                                                                        
                                                                                                              
</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   109


F-3G (1 of 1)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                          Alamco, Inc. and Subsidiaries
                        Consolidating Statement of Income
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>

                                                                                                          Consoli-
                                                                                                            dating           Alamco
                                             Alamco   Hawg Hauling    Alamco - Deleware    Combined        Entries     Consolidated
                                             ------   ------------    -----------------    --------        -------     ------------
<S>                                          <C>      <C>             <C>                  <C>            <C>          <C>  
Operating Revenues
  Gas sales ..........................   
  Transportation .....................   
  Storage ............................   
  Other ..............................   
                                         
                                         
Total Operating Revenues .............   
                                         
                                         
Operating Expenses                       
  Products purchased .................   
  Operation ..........................   
  Maintenance ........................   
  Depreciation and depletion .........   
  Other taxes ........................   
                                         
                                         
Total Operating Expenses .............   
                                         
                                         
                                         
Operating Income (Loss) ..............   
                                         
                                         
Other Income (Deductions)                
  Interest income and other, net .....   
  Interest expense and related charges   
                                         
                                         
Total Other Income (Deductions) ......   
                                         
                                         
                                         
Income (Loss) before Income Taxes ....   
Income Taxes .........................   
                                         
                                         
Net Income (Loss) ....................   
                                         
                                                                                                                      
</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   110


F-4 (1 of 1)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES

                    Consolidating Statement of Income Entries
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)


<TABLE>
<CAPTION>
                                                           Entry No. 1      Entry No. 2
                                                            Eliminate        Eliminate      Entry No. 3
                                                           Intercompany     Subsidiary     Consolidating
                                               Total       Transactions       Equity        Adjustments
                                               -----       ------------       ------        -----------
<S>                                          <C>           <C>              <C>            <C>    
Operating Revenues
  Gas sales ............................  
  Transportation .......................  
  Storage ..............................  
  Other ................................  
                                          
Total Operating Revenues ...............  
                                          

Operating Expenses
  Products purchased ...................  
  Operation ............................  
  Maintenance ..........................  
  Depreciation and depletion ...........  
  Other taxes ..........................  
                                          
Total Operating Expenses ...............  
                                          

Operating Income (Loss) ................  
                                          

Other Income (Deductions)
  Interest income and other, net .......  
  Interest expense and related charges..  
                                          
Total Other Income (Deductions) ........  
                                          

Income (Loss) before Income Taxes ......  

Income Taxes ...........................  
                                          

Net Income (Loss) ......................  
                                          
</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   111


F-4A (1 of 1)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                 Columbia Electric Corporation and Subsidiaries
                    Consolidating Statement of Income Entries
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>

                                                            Entry No. 1        Entry No. 2
                                                             Eliminate          Eliminate     Entry No. 3
                                                            Intercompany       Subsidiary    Consolidating
                                              Total         Transactions         Equity       Adjustments
                                              -----         ------------         ------       -----------
<S>                                          <C>            <C>                <C>           <C>    
Operating Revenues
  Gas sales ..........................    
  Transportation .....................    
  Storage ............................    
  Other ..............................    
                                          
                                          
Total Operating Revenues .............    
                                          
                                          
Operating Expenses                        
  Products purchased .................    
  Operation ..........................    
  Maintenance ........................    
  Depreciation and depletion .........    
  Other taxes ........................    
                                          
                                          
Total Operating Expenses .............    
                                          
                                          
                                          
Operating Income (Loss) ..............    
                                          
                                          
Other Income (Deductions)                 
  Interest income and other, net .....    
  Interest expense and related charges    
                                          
                                          
Total Other Income (Deductions) ......    
                                          
                                          
                                          
Income (Loss) before Income Taxes ....    
Income Taxes .........................    
                                          
                                          
                                          
Net Income (Loss) ....................    
                                          
</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   112


F-4B (1 of 1)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                   Tristar Capital Corporation and Subsidiary
                    Consolidating Statement of Income Entries
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)


<TABLE>
<CAPTION>

                                                            Entry No. 1         Entry No. 2                      
                                                            Eliminate           Eliminate          Entry No. 3   
                                                            Intercompany        Subsidiary         Consolidating 
                                            Total           Transactions        Equity             Adjustments   
                                            -----           ------------        ------             -----------   
<S>                                        <C>             <C>                 <C>                <C>   
Operating Revenues
  Gas sales ..........................   
  Transportation .....................   
  Storage ............................   
  Other ..............................   
                                         
Total Operating Revenues ...........     
                                         
                                         
Operating Expenses                       
  Products purchased .................   
  Operation ..........................   
  Maintenance ........................   
  Depreciation and depletion .........   
  Other taxes ........................   
                                         
Total Operating Expenses ...........     
                                         
                                         
Operating Income (Loss) ............     
                                         
                                         
  Other Income (Deductions)              
  Interest income and other, net .....   
  Interest expense and related charges   
                                         
                                         
  Total Other Income (Deductions) ....   
                                         
                                         
  Income (Loss) before Income Taxes ..   
  Income Taxes .......................   
                                         
                                         
  Net Income (Loss) ..................   
                                         
</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   113


F-4C (1 of 1)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                     Columbia LNG Corporation and Subsidiary
                    Consolidating Statement of Income Entries
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)


<TABLE>
<CAPTION>
                                                       Entry No. 1       Entry No. 2   
                                                        Eliminate         Eliminate    Entry No. 3
                                                       Intercompany      Subsidiary    Consolidating
                                           Total       Transactions        Equity      Adjustments
                                           -----       ------------        ------      -----------
<S>                                        <C>         <C>               <C>           <C>    
Operating Revenues
  Gas sales ..........................    
  Transportation .....................    
  Storage ............................    
  Other ..............................    
                                          
                                          
Total Operating Revenues .............    
                                          
                                          
Operating Expenses                        
  Products purchased .................    
  Operation ..........................    
  Maintenance ........................    
  Depreciation and depletion .........    
  Other taxes ........................    
                                          
                                          
Total Operating Expenses .............    
                                          
                                          
                                          
Operating Income (Loss) ..............    
                                          
                                          
Other Income (Deductions)                 
  Interest income and other, net .....    
  Interest expense and related charges    
                                          
                                          
Total Other Income (Deductions) ......    
                                          
                                          
                                          
Income (Loss) before Income Taxes ....    
Income Taxes .........................    
                                          
                                          
Net Income (Loss) ....................    
                                          
</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   114
 F-4D (1 of 1)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
              Columbia Energy Services Corporation and Subsidiaries
         Consolidating Income Statement Entries as of December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>

                                                         Entry No. 1     Entry No. 2
                                                         Eliminate       Eliminate       Entry No. 3
                                                         Intercompany    Subsidiary      Consolidating
                                              Total      Transactions    Equity          Adjustments
                                              -----      ------------    -----------     -----------
<S>                                          <C>            <C>          <C>             <C>      
Operating Revenues
  Gas sales ..........................     
  Transportation .....................     
  Storage ............................     
  Other ..............................     
                                           
Total Operating Revenues .............     
                                           
                                           
Operating Expenses                         
  Products purchased .................     
  Operation ..........................     
  Maintenance ........................     
  Depreciation and depletion .........     
  Other taxes ........................     
                                           
Total Operating Expenses .............     
                                           
                                           
Operating Income (Loss) ..............     
                                           
                                           
Other Income (Deductions)                  
  Interest income and other, net .....     
  Interest expense and related charges     
                                           
Total Other Income (Deductions) ......     
                                           
                                           
Income (Loss) before Income Taxes ....     
Income Taxes .........................     
                                           
                                           
Net Income (Loss) ....................     
                                           
</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   115


F-4E (1 of 1)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
              Columbia Network Services Corporation and Subsidiary
                    Consolidating Statement of Income Entries
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>

                                                           Entry No. 1         Entry No. 2
                                                           Eliminate           Eliminate            Entry No. 3
                                                           Intercompany        Subsidiary           Consolidating
                                              Total        Transactions        Equity               Adjustments
                                              -----        ------------        ------               -----------
<S>                                           <C>          <C>                 <C>                  <C>  
Operating Revenues
  Gas sales ..........................    
  Transportation .....................    
  Storage ............................    
  Other ..............................    
                                          
                                          
Total Operating Revenues .............    
                                          
                                          
Operating Expenses                        
  Products purchased .................    
  Operation ..........................    
  Maintenance ........................    
  Depreciation and depletion .........    
  Other taxes ........................    
                                          
                                          
Total Operating Expenses .............    
                                          
                                          
Operating Income (Loss) ..............    
                                          
                                          
Other Income (Deductions)                 
  Interest income and other, net .....    
  Interest expense and related charges    
                                          
                                          
Total Other Income (Deductions) ......    
                                          
                                          
                                          
Income (Loss) before Income Taxes ....    
Income Taxes .........................    
                                          
                                          
Net Income (Loss) ....................    
                                          
                                                                                                          
</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   116
F-4F (1 of 1)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                 Columbia Natural Resources, Inc. and Subsidiary
                    Consolidating Statement of Income Entries
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>

                                                           Entry No. 1    Entry No. 2
                                                           Eliminate       Eliminate     Entry No. 3
                                                           Intercompany   Subsidiary     Consolidating
                                              Total        Transactions     Equity       Adjustments
                                              -----        ------------     ------       -----------
<S>                                           <C>          <C>            <C>            <C>
Operating Revenues
  Gas sales ..........................
  Transportation .....................
  Storage ............................
  Other ..............................

Total Operating Revenues .............


Operating Expenses
  Products purchased .................
  Operation ..........................
  Maintenance ........................
  Depreciation and depletion .........
  Other taxes ........................

Total Operating Expenses .............


Operating Income (Loss) ..............


Other Income (Deductions)
  Interest income and other, net .....
  Interest expense and related charges


Total Other Income (Deductions) ......


Income (Loss) before Income Taxes ....
Income Taxes .........................


Net Income (Loss) ....................

</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   117


F-4G (1 of 1)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                          Alamco, Inc. and Subsidiaries
                    Consolidating Statement of Income Entries
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                            Entry No. 3
                                                        Entry No. 1         Entry No. 2     Adjust to
                                                        Eliminate           Eliminate       Consoli-        Entry No. 4
                                                        Intercompany        Subsidiary      dated Full      Elimination/
                                           Total        Transactions        Equity          Cost Pool       Adjustments
                                           -----        ------------        ----------      ---------       -----------
<S>                                        <C>          <C>                 <C>             <C>             <C>
Operating Revenues
  Gas sales ..........................
  Transportation .....................
  Storage ............................
  Other ..............................


Total Operating Revenues .............


Operating Expenses
  Products purchased .................
  Operation ..........................
  Maintenance ........................
  Depreciation and depletion .........
  Other taxes ........................


Total Operating Expenses .............



Operating Income (Loss) ..............


Other Income (Deductions)
  Interest income and other, net .....
  Interest expense and related charges


Total Other Income (Deductions) ......



Income (Loss) before Income Taxes ....
Income Taxes .........................


Net Income (Loss) ....................


</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   118
    F-5 (1 of 5)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES

                 Consolidating Statement of Common Stock Equity
                          Year Ended December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)


<TABLE>
<CAPTION>
                                        F-5           F-5          F-5           F-5                    Consolidating
                                       Page 2        Page 3       Page 4        Page 5     Combined        Entries      Consolidated
                                       ------        ------       ------        ------     --------        -------      ------------
<S>                                   <C>             <C>           <C>         <C>       <C>           <C>             <C>
Common Stock
 Balance at beginning of year                                                                                               567,855
  Common stock issued -
    Subsidiaries .............                                                                                                   --
    Dividend reinvestment plan                                                                                                   --
    Long-term incentive plan .                                                                                                2,318
    Public offering ..........                                                                                                   --
  Recapitalization -
    Reduction in par value ...                                                                                              (15,218)

                                                                                                                         ----------
 Balance at end of year ......                                                                                              554,955
                                                                                                                         ----------

Additional Paid in Capital
 Balance at beginning of year                                                                                               727,823
  Common stock issued -
    Subsidiaries .............                                                                                                  177
    Dividend reinvestment plan                                                                                                   --
    Long-term incentive plan .                                                                                               10,998
    Public offering ..........                                                                                                   --
    Other ....................                                                                                                   --
  Recapitalization -
    Debt issuance ............                                                                                                   --
    Dividends paid ...........                                                                                                   --
    Capital contributions ....                                                                                                   --
    Reduction in par value ...                                                                                               15,218

                                                                                                                         ----------
 Balance at end of year ......                                                                                              754,216

                                                                                                                         ----------

Retained Earnings
 Balance at beginning of year                                                                                               259,258
  Net income .................                                                                                              273,336
  Common stock dividends -
    CG .......................                                                                                               49,879
    Subsidiaries (to CG) .....                                                                                                   --
  Other ......................                                                                                                   --

                                                                                                                         ----------
 Balance at end of year ......                                                                                              482,715

                                                                                                                         ----------
Reacquired Capital Stock .....                                                                                                   --

Unearned Employee Compensation
 Balance at beginning of year                                                                                                (1,459)
  Adjustment .................                                                                                                  292

                                                                                                                         ----------
 Balance at end of year ......                                                                                               (1,167)

                                                                                                                         ----------

TOTAL COMMON STOCK EQUITY ....                                                                                            1,790,719
                                                                                                                         ==========
</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   119
    F-5 (2 of 5)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES

                 Consolidating Statement of Common Stock Equity
                          Year Ended December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                                    F-5 Page 2
                                      CNR (a)          TCO              CGT            CLG (a)         CKY            Total
                                      -------          ---              ---            -------         ---            -----
Common Stock
<S>                                   <C>             <C>              <C>             <C>             <C>           <C>
 Balance at beginning of year                         241,784          59,780                          23,806
  Common stock issued -
    Subsidiaries .............                       (241,735)        (59,760)                             --
    Dividend reinvestment plan                             --              --                              --
    Long-term incentive plan .                             --              --                              --
    Public offering ..........                             --              --                              --
  Recapitalization -
    Reduction in par value ...                             --              --                              --

                                                   ----------      ----------                      ----------
 Balance at end of year ......                             49              20                          23,806

                                                   ----------      ----------                      ----------

Additional Paid in Capital
 Balance at beginning of year                       1,270,289          22,669                             174
  Common stock issued -
    Subsidiaries .............                        241,735          59,760                              --
    Dividend reinvestment plan                             --              --                              --
    Long-term incentive plan .                             --              --                              --
    Public offering ..........                             --              --                              --
    Other ....................                             --              --                              --
  Recapitalization -
    Debt issuance ............                             --              --                              --
    Dividends paid ...........                             --              --                              --
    Capital contributions ....                             --              --                              --
    Reduction in par value ...                             --              --                              --

                                                   ----------      ----------                      ----------
 Balance at end of year ......                      1,512,024          82,429                             174

                                                   ----------      ----------                      ----------

Retained Earnings
 Balance at beginning of year                        (609,704)         21,276                          40,326
  Net income .................                        144,093          15,328                          11,639
  Common stock dividends -
    CG .......................                             --              --                              --
    Subsidiaries (to CG) .....                         72,000          15,200                           9,284
  Other ......................                             --              --                              --

                                                   ----------      ----------                      ----------
 Balance at end of year ......                       (537,611)         21,404                          42,681

                                                   ----------      ----------                      ----------
Reacquired Capital Stock .....                             --              --                              --

Unearned Employee Compensation
 Balance at beginning of year                              --              --                              --
  Adjustment .................                             --              --                              --

                                                   ----------      ----------                      ----------
 Balance at end of year ......                             --              --                              --

                                                   ----------      ----------                      ----------

TOTAL COMMON STOCK EQUITY ....                        974,462         103,853                          66,661
                                                   ==========      ==========                      ==========
</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   120
F-5 (3 of 5)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES

                 Consolidating Statement of Common Stock Equity
                          Year Ended December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                                 F-5 Page 3
                                        CMD            CPA           COS             COH            CG             Total
                                        ---            ---           ---             ---            --             -----
<S>                                  <C>             <C>            <C>           <C>            <C>             <C>
Common Stock
 Balance at beginning of year          10,092          85,128         50,305        119,240
  Common stock issued -
    Subsidiaries .............        (10,020)             --         15,000             --
    Dividend reinvestment plan             --              --             --             --
    Long-term incentive plan .             --              --             --             --
    Public offering ..........             --              --             --             --
  Recapitalization -
    Reduction in par value ...             --              --             --             --

                                   ----------      ----------     ----------     ----------
 Balance at end of year ......             72          85,128         65,305        119,240

                                   ----------      ----------     ----------     ----------

Additional Paid in Capital
 Balance at beginning of year              --              --          2,969             --
  Common stock issued -
    Subsidiaries .............         10,020              --             --             --
    Dividend reinvestment plan             --              --             --             --
    Long-term incentive plan .             --              --             --             --
    Public offering ..........             --              --             --             --
    Other ....................             --              --             --             --
  Recapitalization -
    Debt issuance ............             --              --             --             --
    Dividends paid ...........             --              --             --             --
    Capital contributions ....             --              --             --             --
    Reduction in par value ...             --              --             --             --

                                   ----------      ----------     ----------     ----------
 Balance at end of year ......         10,020              --          2,969             --
                                   ----------      ----------     ----------     ----------

Retained Earnings
 Balance at beginning of year          11,807         124,438         61,394        271,330
  Net income .................          3,053          30,555         12,127         52,426
  Common stock dividends -
    CG .......................             --              --             --             --
    Subsidiaries (to CG) .....          2,553          24,006             --         20,509
  Other ......................             --              --             --             --

                                   ----------      ----------     ----------     ----------
 Balance at end of year ......         12,307         130,987         73,521        303,247

                                   ----------      ----------     ----------     ----------
Reacquired Capital Stock .....             --              --             --             --

Unearned Employee Compensation
 Balance at beginning of year              --              --             --             --
  Adjustment .................             --              --             --             --

                                   ----------      ----------     ----------     ----------
 Balance at end of year ......             --              --             --             --

                                   ----------      ----------     ----------     ----------

TOTAL COMMON STOCK EQUITY ....         22,399         216,115        141,795        422,487
                                   ==========      ==========     ==========     ==========
</TABLE>
                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   121
    F-5 (4 of 5)


                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES

                 Consolidating Statement of Common Stock Equity
                          Year Ended December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                       F-5 Page 4
                                        CS           CIC       CES (a)        CPC         TVC (a)        Total
                                        --           ---       -------        ---         -------        -----
Common Stock
<S>                               <C>               <C>        <C>           <C>          <C>           <C>
 Balance at beginning of year            --
  Common stock issued -
    Subsidiaries .............          300
    Dividend reinvestment plan           --
    Long-term incentive plan .           --
    Public offering ..........           --
  Recapitalization -
    Reduction in par value ...           --

                                   --------
 Balance at end of year ......          300

                                   --------

Additional Paid in Capital
 Balance at beginning of year            --
  Common stock issued -
    Subsidiaries .............       12,700
    Dividend reinvestment plan           --
    Long-term incentive plan .           --
    Public offering ..........           --
    Other ....................           --
  Recapitalization -
    Debt issuance ............           --
    Dividends paid ...........           --
    Capital contributions ....           --
    Reduction in par value ...           --


                                   --------
 Balance at end of year ......       12,700

                                   --------

Retained Earnings
 Balance at beginning of year         3,641
  Net income .................        2,236
  Common stock dividends -
    CG .......................           --
    Subsidiaries (to CG) .....        2,223
  Other ......................           --

                                   --------
 Balance at end of year ......        3,654

                                   --------
Reacquired Capital Stock .....           --

Unearned Employee Compensation
 Balance at beginning of year            --
  Adjustment .................           --

                                   --------
 Balance at end of year ......           --

                                   --------

TOTAL COMMON STOCK EQUITY ....       16,654
                                   ========
</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   122
F-5 (5 of 5)


                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES

                 Consolidating Statement of Common Stock Equity
                          Year Ended December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)


<TABLE>
<CAPTION>
                                                                      F-5 Page 5
                                    TCC (a)       CAT      CNS (a)      Total
                                    -------       ---      -------      -----
Common Stock
<S>                                 <C>        <C>          <C>       <C>
 Balance at beginning of year
  Common stock issued -
    Subsidiaries .............
    Dividend reinvestment plan
    Long-term incentive plan .
    Public offering ..........
  Recapitalization -
    Reduction in par value ...


 Balance at end of year ......



Additional Paid in Capital
 Balance at beginning of year
  Common stock issued -
    Subsidiaries .............
    Dividend reinvestment plan
    Long-term incentive plan .
    Public offering ..........
    Other ....................
  Recapitalization -
    Debt issuance ............
    Dividends paid ...........
    Capital contributions ....
    Reduction in par value ...


 Balance at end of year ......



Retained Earnings
 Balance at beginning of year
  Net income .................
  Common stock dividends -
    CG .......................
    Subsidiaries (to CG) .....
  Other ......................


 Balance at end of year ......


Reacquired Capital Stock .....

Unearned Employee Compensation
 Balance at beginning of year
  Adjustment .................


 Balance at end of year ......



TOTAL COMMON STOCK EQUITY ....

</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED




<PAGE>   123
F-5A (1 of 3)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                 Columbia Electric Corporation and Subsidiaries
                 Consolidating Statement of Common Stock Equity
                          Year Ended December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                   F-5A           F-5A                  Consolidating     TVC
                                   Page 2        Page 3      Combined      Entries     Consolidated
                                   ------        ------      --------      -------     ------------


<S>                                 <C>             <C>       <C>            <C>        <C>
Common Stock
 Balance at beginning of year
  Common stock issued - ......
    Subsidiaries .............
    Dividend reinvestment plan
    Long-term incentive plan .
    Public offering ..........
  Recapitalization -
    Reduction in par value ...

 Balance at end of year ......


Additional Paid in Capital
 Balance at beginning of year
  Common stock issued - ......
    Subsidiaries .............
    Dividend reinvestment plan
    Long-term incentive plan .
    Public offering ..........
    Other ....................
  Recapitalization -
    Debt issuance ............
    Dividends paid ...........
    Capital contributions ....
    Reduction in par value ...

 Balance at end of year ......


Retained Earnings
 Balance at beginning of year
  Net income (loss) ..........
  Common stock dividends -
    CG .......................
    Subsidiaries (to CG) .....
  Other ......................


 Balance at end of year ......


Reacquired Capital Stock .....

Unearned Employee Compensation
 Balance at beginning of year
  Adjustment .................

 Balance at end of year ......


TOTAL COMMON STOCK EQUITY ....

</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   124
F-5A (2 of 3)
                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                 Columbia Electric Corporation and Subsidiaries
                 Consolidating Statement of Common Stock Equity
                          Year Ended December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                           F-5A Page 2
                                     BGC        BLC        GGC        GLC        PGC       PLC      TVC       Total
                                     ---        ---        ---        ---        ---       ---      ---       -----
<S>                                 <C>        <C>       <C>        <C>        <C>        <C>    <C>        <C>
Common Stock
 Balance at beginning of year     
  Common stock issued -
    Subsidiaries .............    
    Dividend reinvestment plan    
    Long-term incentive plan .    
    Public offering ..........    
  Recapitalization -
    Reduction in par value ...    
                                  
 Balance at end of year ......    
                                  

Additional Paid in Capital
 Balance at beginning of year     
  Common stock issued -
    Subsidiaries .............    
    Dividend reinvestment plan    
    Long-term incentive plan .    
    Public offering ..........    
    Other ....................    
  Recapitalization -
    Debt issuance ............    
    Dividends paid ...........    
    Capital contributions ....    
    Reduction in par value ...    
                                  
 Balance at end of year ......    
                                  

Retained Earnings
 Balance at beginning of year     
  Net income (loss) ..........    
  Common stock dividends - ...    
    CG .......................    
    Subsidiaries (to CG) .....    
  Other ......................    
                                  
 Balance at end of year ......    
                                  

Reacquired Capital Stock .....    

Unearned Employee Compensation
 Balance at beginning of year     
  Adjustment .................    
                                  
 Balance at end of year ......    
                                  

TOTAL COMMON STOCK EQUITY ....    
                                  
</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   125
F-5A (3 of 3)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                 Columbia Electric Corporation and Subsidiaries
                 Consolidating Statement of Common Stock Equity
                          Year Ended December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                            F-5A Page 3
                                      VGC         VLC          RL        FC    TVC9  TVC10     Total
                                      ---         ---          --        --    ----  -----     -----
<S>                                    <C>         <C>     <C>           <C>   <C>   <C>    <C>
Common Stock
 Balance at beginning of year     
  Common stock issued -
    Subsidiaries .............    
    Dividend reinvestment plan    
    Long-term incentive plan .    
    Public offering ..........    
  Recapitalization -
    Reduction in par value ...    
                                  
 Balance at end of year ......    
                                  

Additional Paid in Capital
 Balance at beginning of year     
  Common stock issued -
    Subsidiaries .............    
    Dividend reinvestment plan    
    Long-term incentive plan .    
    Public offering ..........    
    Other ....................    
  Recapitalization -
    Debt issuance ............    
    Dividends paid ...........    
    Capital contributions ....    
    Reduction in par value ...    
                                  
 Balance at end of year ......    
                                  

Retained Earnings
 Balance at beginning of year     
  Net income (loss) ..........    
  Common stock dividends -
    CG .......................    
    Subsidiaries (to CG) .....    
  Other ......................    
                                  
 Balance at end of year ......    
                                  

Reacquired Capital Stock .....    

Unearned Employee Compensation
 Balance at beginning of year     
  Adjustment .................    
                                  
 Balance at end of year ......    
                                  

TOTAL COMMON STOCK EQUITY ....    
                                  
</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   126
F-5B (1 of 1)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                   Tristar Capital Corporation and Subsidiary
                 Consolidating Statement of Common Stock Equity
                          Year Ended December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                                        Consoli-
                                                                                                       dating              TCC
                                            TGT                  TCC              Combined            Entries          Consolidated
                                            ---                  ---              --------            -------          ------------
<S>                                         <C>                <C>                <C>                 <C>              <C>
Common Stock
  Balance at beginning of year          
  Common stock issued -
    Subsidiaries .............          
    Dividend reinvestment plan          
    Long-term incentive plan .          
    Public offering ..........          
  Recapitalization - .........          
    Reduction in par value ...          
                                        
  Balance at end of year .....          
                                        

Additional Paid in Capital
  Balance at beginning of year          
  Common stock issued -
    Subsidiaries .............          
    Dividend reinvestment plan          
    Long-term incentive plan .          
    Public offering ..........          
    Other ....................          
  Recapitalization -
    Debt issuance ............          
    Dividends paid ...........          
    Capital contributions ....          
    Reduction in par value ...          
                                        
  Balance at end of year .....          
                                        
Retained Earnings
  Balance at beginning of year          
  Net income (loss) ..........          
  Common stock dividends -
    CG .......................          
    Subsidiaries (to CG) .....          
  Other ......................          
                                        
  Balance at end of year .....          
                                        
Reacquired Capital Stock .....          

Unearned Employee Compensation
  Balance at beginning of year          
  Adjustment .................          
                                        
  Balance at end of year .....          
                                        

TOTAL COMMON STOCK EQUITY ....          
                                        
</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   127
F-5C (1 of 1)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                     Columbia LNG Corporation and Subsidiary
                 Consolidating Statement of Common Stock Equity
                          Year Ended December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                    Consoli-
                                                                                                     dating                CLG
                                           CLNG              CLG                 Combined            Entries           Consolidated
                                           ----              ---                 --------            -------           ------------
<S>                                       <C>               <C>                  <C>                 <C>               <C>
Common Stock
  Balance at beginning of year            
  Common stock issued -
    Subsidiaries .............            
    Dividend reinvestment plan            
    Long-term incentive plan .            
    Public offering ..........            
  Recapitalization -
    Reduction in par value ...            
                                          
  Balance at end of year .....            
                                          
Additional Paid in Capital
  Balance at beginning of year            
  Common stock issued -
    Subsidiaries .............            
    Dividend reinvestment plan            
    Long-term incentive plan .            
    Public offering ..........            
    Other ....................            
  Recapitalization -
    Debt issuance ............            
    Dividends paid ...........            
    Capital contributions ....            
    Reduction in par value ...            
                                          
  Balance at end of year .....            
                                          

Retained Earnings
  Balance at beginning of year            
  Net income (loss) ..........            
  Common stock dividends -
    CG .......................            
    Subsidiaries (to CG) .....            
  Other ......................            
                                          
  Balance at end of year .....            
                                          

Reacquired Capital Stock .....            

Unearned Employee Compensation
  Balance at beginning of year            
  Adjustment .................            
                                          
  Balance at end of year .....            
                                          

TOTAL COMMON STOCK EQUITY ....            
                                          
</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   128
F-5D (1 of 1)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
              Columbia Energy Services Corporation and Subsidiaries
     Consolidating Statement of Common Stock Equity as of December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                            Consoli-
                                                                                                            dating         CES
                                      CEM           CPM            CSP          CES          Combined       Entries    Consolidated
                                      ---           ---            ---          ---          --------       -------    ------------
<S>                                  <C>           <C>           <C>           <C>           <C>            <C>        <C>
Common Stock
 Balance at beginning of year      
  Common stock issued -
    Subsidiaries .............     
    Dividend reinvestment plan     
    Long-term incentive plan .     
    Public offering ..........     
  Recapitalization - .........     
    Reduction in par value ...     
                                   
 Balance at end of year ......     
                                   

Additional Paid in Capital
 Balance at beginning of year      
  Common stock issued -
    Subsidiaries .............     
    Dividend reinvestment plan     
    Long-term incentive plan .     
    Public offering ..........     
    Other ....................     
  Recapitalization -
    Debt issuance ............     
    Dividends paid ...........     
    Capital contributions ....     
    Reduction in par value ...     
                                   
 Balance at end of year ......     
                                   

Retained Earnings
 Balance at beginning of year      
 Net income (loss) ...........     
  Common stock dividends -
    CG .......................     
    Subsidiaries (to CG) .....     
  Other ......................     
                                   
 Balance at end of year ......     
                                   

Reacquired Capital Stock .....     

Unearned Employee Compensation
 Balance at beginning of year      
  Adjustment .................     
                                   
 Balance at end of year ......     
                                   

TOTAL COMMON STOCK EQUITY ....     
                                   
</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   129
F-5E (1 of 1)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
              Columbia Network Services Corporation and Subsidiary
                 Consolidating Statement of Common Stock Equity
                          Year Ended December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                   Consoli-
                                                                                                    dating                   CNS
                                           CMC                 CNS             Combined             Entries         Consolidated
                                           ---                 ---             --------             -------         ------------
<S>                                        <C>               <C>                <C>                 <C>             <C>
Common Stock
  Balance at beginning of year          
  Common stock issued -
    Subsidiaries .............          
    Dividend reinvestment plan          
    Long-term incentive plan .          
    Public offering ..........          
  Recapitalization -
    Reduction in par value ...          
                                        
  Balance at end of year .....          
                                        

Additional Paid in Capital
  Balance at beginning of year          
  Common stock issued -
    Subsidiaries .............          
    Dividend reinvestment plan          
    Long-term incentive plan .          
    Public offering ..........          
    Other ....................          
  Recapitalization -
    Debt issuance ............          
    Dividends paid ...........          
    Capital contributions ....          
    Reduction in par value ...          
                                        
  Balance at end of year .....          
                                        

Retained Earnings
  Balance at beginning of year          
  Net income (loss) ..........          
  Common stock dividends -
    CG .......................          
    Subsidiaries (to CG) .....          
  Other ......................          
                                        
  Balance at end of year .....          
                                        

Reacquired Capital Stock .....          

Unearned Employee Compensation
  Balance at beginning of year          
  Adjustment .................          
                                        

  Balance at end of year .....          
                                        
TOTAL COMMON STOCK EQUITY ....          
                                        
</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   130
F-5F (1 of 1)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                 Columbia Natural Resources, Inc. and Subsidiary
                 Consolidating Statement of Common Stock Equity
                          Year Ended December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                    Consoli-
                                                                                                    dating               CNR
                                           CNR                Alamco           Combined             Entries         Consolidated
                                           ---                ------           --------             -------         ------------
<S>                                       <C>                 <C>              <C>                <C>               <C>
Common Stock
  Balance at beginning of year
  Common stock issued -
    Subsidiaries .............
    Dividend reinvestment plan
    Long-term incentive plan .
    Public offering ..........
  Recapitalization -
    Reduction in par value ...

  Balance at end of year .....


Additional Paid in Capital
  Balance at beginning of year
  Common stock issued -
    Subsidiaries .............
    Dividend reinvestment plan
    Long-term incentive plan .
    Public offering ..........
    Other ....................
  Recapitalization -
    Debt issuance ............
    Dividends paid ...........
    Capital contributions ....
    Reduction in par value ...

  Balance at end of year .....


Retained Earnings
  Balance at beginning of year
  Net income (loss) ..........
  Common stock dividends -
    CG .......................
    Subsidiaries (to CG) .....
  Other ......................

  Balance at end of year .....

Reacquired Capital Stock .....

Unearned Employee Compensation
  Balance at beginning of year
  Adjustment .................


  Balance at end of year .....

TOTAL COMMON STOCK EQUITY ....

</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   131
F-5G (1 of 1)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                          Alamco, Inc. and Subsidiaries
                 Consolidating Statement of Common Stock Equity
                          Year Ended December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                         Consoli-
                                                                                                         dating           Alamco
                                        Alamco       Hawg Hauling  Alamco - Deleware   Combined          Entries       Consolidated
                                        ------       ------------  -----------------   --------          -------       ------------
<S>                                     <C>          <C>           <C>                 <C>               <C>           <C>
Common Stock
  Balance at beginning of year
  Common stock issued -
    Subsidiaries .............
    Dividend reinvestment plan
    Long-term incentive plan .
    Public offering ..........
  Recapitalization - .........
    Reduction in par value ...

  Balance at end of year .....


Additional Paid in Capital
  Balance at beginning of year
  Common stock issued -
    Subsidiaries .............
    Dividend reinvestment plan
    Long-term incentive plan .
    Public offering ..........
    Other ....................
  Recapitalization - .........
    Capital contributions ....
    Reduction in par value ...

  Balance at end of year .....


Retained Earnings
  Balance at beginning of year
  Net income (loss) ..........
  Common stock dividends -
    CG .......................
    Subsidiaries (to CG) .....
  Other ......................

  Balance at end of year .....


Reacquired Capital Stock .....

Unearned Employee Compensation
  Balance at beginning of year
  Adjustment .................


  Balance at end of year .....

TOTAL COMMON STOCK EQUITY ....

</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   132
F-6 (1 of 10)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES

                      Consolidating Statement of Cash Flows
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                               Consoli-
                                                          F-6        F-6         F-6       F-6                 dating     Consoli-
                                                        Page 2      Page 3      Page 4    Page 5    Combined   Entries     dated
                                                       --------    --------    -------    ------    --------   --------   --------
<S>                                                    <C>         <C>         <C>        <C>       <C>        <C>        <C>
Net Cash From Operations (See F-6 Page 6 for detail)                                                                       468,189
                                                                                                                          --------
Investment Activities
  Capital expenditures .............................                                                                      (420,491)
  Contribution - partnerships ......................                                                                        (7,476)
  Purchase of investment assets ....................                                                                       (99,425)
  Other investments - net ..........................                                                                        (1,622)
                                                                                                                          --------
Net Investment Activities ..........................                                                                      (529,014)
                                                                                                                          --------

Financing Activities
  Dividends paid ...................................                                                                       (49,878)
  Capital contributions ............................                                                                            --
  Retirement of long-term debt .....................                                                                          (973)
  Issuance of common stock -
    Issued by Registrant ...........................                                                                        11,691
    Issued by Subsidiary to Registrant .............                                                                            --
  Issuance of long-term debt -
    Issued by Registrant ...........................                                                                            --
    Issued by Subsidiary to Registrant .............                                                                            --
  Issuance (Repayment) of short-term debt ..........                                                                        77,136
  Other financing activities .......................                                                                         1,753
                                                                                                                          --------
Net Financing Activities ...........................                                                                        39,729
                                                                                                                          --------

Increase in cash and temporary cash investments ....                                                                       (21,096)
Cash and temporary cash investments at
 beginning of year .................................                                                                        49,836
                                                                                                                          --------
Cash and temporary cash investments at
 end of year (a) ...................................                                                                        28,740
                                                                                                                          --------
Supplemental Disclosures of Cash Flow Information
  Cash paid for interest ...........................                                                                       145,424
  Cash paid for income taxes (net of refunds) ......                                                                        90,672
</TABLE>


(a) The Corporation considers all highly liquid debt instruments to be cash
equivalents. Balance includes intercompany money pool balances, which are
reported as intercompany accounts receivable on the balance sheet.


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   133
F-6 (2 of 10)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES

                      Consolidating Statement of Cash Flows
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                                        F-6 Page 2
                                                          CNR (b)         TCO          CGT       CLG (b)      CKY         Total
                                                          -------         ---          ---       -------      ---         -----
<S>                                                      <C>           <C>           <C>         <C>         <C>          <C>
Net Cash From Operations (See F-6 Page 7 for detail)                    270,188       46,517                 17,777
                                                                       --------      -------                -------

Investment Activities
  Capital expenditures .............................                   (201,534)     (23,952)               (11,291)
  Contribution - partnerships ......................                     (6,476)          --                     --
  Purchase of investment assets ....................                         --           --                     --
  Other investments - net ..........................                         --           --                     --
                                                                       --------      -------                -------
Net Investment Activities ..........................                   (208,010)     (23,952)               (11,291)
                                                                       --------      -------                -------

Financing Activities
  Dividends paid ...................................                    (72,000)     (15,200)                (9,285)
  Capital contributions ............................                         --           --                     --
  Retirement of long-term debt .....................                        (16)          --                    (33)
  Issuance of common stock -
    Issued by Registrant ...........................                         --           --                     --
    Issued by Subsidiary to Registrant .............                         --           --                     --
  Issuance of long-term debt -
    Issued by Registrant ...........................                         --           --                  4,969
    Issued by Subsidiary to Registrant .............                         --           --                     --
  Issuance (Repayment) of short-term debt ..........                         --           --                 (3,137)
  Other financing activities .......................                       (692)      (5,679)                   650
                                                                       --------      -------                -------
Net Financing Activities ...........................                    (72,708)     (20,879)                (6,836)
                                                                       --------      -------                -------

Increase in cash and temporary cash investments ....                    (10,530)       1,686                   (350)
Cash and temporary cash investments at
 beginning of year .................................                     39,758        1,236                    878
                                                                       --------      -------                -------
Cash and temporary cash investments at
 end of year (a) ...................................                     29,228        2,922                    528
                                                                       --------      -------                -------
Supplemental Disclosures of Cash Flow Information
  Cash paid for interest ...........................                     43,892        5,172                  4,337
  Cash paid for income taxes (net of refunds) ......                    (22,725)      11,420                  8,273
</TABLE>

(a) The Corporation considers all highly liquid short-term investments to be
cash equivalents. Balance includes intercompany money pool balances, which are
reported as intercompany accounts receivable on the balance sheet.


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   134
F-6 (3 of 10)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES

                      Consolidating Statement of Cash Flows
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                                         F-6 Page 3
                                                           COH           CMD         CPA          COS          CG            Total
                                                         --------      ------      -------      -------      --------      --------
<S>                                                      <C>           <C>         <C>          <C>          <C>           <C>
Net Cash From Operations (See F-6 Page 8 for detail)      134,603       7,560       41,717       34,976
                                                         --------      ------      -------      -------
Investment Activities
  Capital expenditures .............................      (63,300)     (3,989)     (28,652)     (43,490)
  Contribution - partnerships ......................           --          --           --           --
  Purchase of investment assets ....................           --          --           --           --
  Other investments - net ..........................           --          --           --           --
                                                         --------      ------      -------      -------
Net Investment Activities ..........................      (63,300)     (3,989)     (28,652)     (43,490)
                                                         --------      ------      -------      -------
Financing Activities
  Dividends paid ...................................      (20,509)     (2,553)     (24,006)          --
  Capital contributions ............................           --          --           --           --
  Retirement of long-term debt .....................          (78)        (13)         (29)        (620)
  Issuance of common stock -
    Issued by Registrant ...........................           --          --           --           --
    Issued by Subsidiary to Registrant .............           --          --           --       15,000
  Issuance of long-term debt -
    Issued by Registrant ...........................           --          --           --       15,000
    Issued by Subsidiary to Registrant .............           --          --           --           --
  Issuance (Repayment) of short-term debt ..........      (53,727)       (948)      13,035       11,217
  Other financing activities .......................          890         (93)      (2,642)         191
                                                         --------      ------      -------      -------
Net Financing Activities ...........................      (73,424)     (3,607)     (13,642)      40,788
                                                         --------      ------      -------      -------
Increase in cash and temporary cash investments ....       (2,121)        (36)        (577)      32,274
Cash and temporary cash investments at
 beginning of year .................................        5,806          37        1,355          649
                                                         --------      ------      -------      -------
Cash and temporary cash investments at
 end of year (a) ...................................        3,685           1          778       32,923
                                                         --------      ------      -------      -------
Supplemental Disclosures of Cash Flow Information
  Cash paid for interest ...........................       28,197       1,454       12,999        8,783
  Cash paid for income taxes (net of refunds) ......       37,863         975       14,045        2,252
</TABLE>

(a) The Corporation considers all highly liquid short-term investments to be
cash equivalents. Balance includes intercompany money pool balances, which are
reported as intercompany accounts receivable on the balance sheet.


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   135
F-6 (4 of 10)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES

                      Consolidating Statement of Cash Flows
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                                         F-6 Page 4
                                                          CS           CIC         CES (b)        CPC          TVC (b)      Total
                                                        -------       ------       -------       -------       ------      -------
<S>                                                     <C>           <C>          <C>           <C>           <C>       <C>
Net Cash From Operations (See F-6 Page 9 for detail)    (32,082)
                                                        -------
Investment Activities
  Capital expenditures .............................     (5,221)
  Contribution - partnerships ......................         --
  Purchase of investment assets ....................         --
  Other investments - net ..........................         --
                                                        -------
Net Investment Activities ..........................     (5,221)
                                                        -------

Financing Activities
  Dividends paid ...................................     (2,223)
  Capital contributions ............................         --
  Retirement of long-term debt .....................         --
  Issuance of common stock -
    Issued by Registrant ...........................         --
    Issued by Subsidiary to Registrant .............         --
  Issuance of long-term debt -
    Issued by Registrant ...........................         --
    Issued by Subsidiary to Registrant .............         --
  Issuance (Repayment) of short-term debt ..........     20,030
  Other financing activities .......................      1,025
                                                        -------
Net Financing Activities ...........................     18,832
                                                        -------

Increase in cash and temporary cash investments ....    (18,471)
Cash and temporary cash investments at
 beginning of year .................................     18,500
                                                        -------
Cash and temporary cash investments at
 end of year (a) ...................................         29
                                                        -------
Supplemental Disclosures of Cash Flow Information
  Cash paid for interest ...........................      1,873
  Cash paid for income taxes (net of refunds) ......      2,113
</TABLE>

(a) The Corporation considers all highly liquid short-term investments to be
cash equivalents. Balance includes intercompany money pool balances, which are
reported as intercompany accounts receivable on the balance sheet.


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   136
F-6 (5 of 10)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES

                      Consolidating Statement of Cash Flows
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                                       F-6 Page 5
                                                                 TCC (b)            CAT               CNS (b)             Total
                                                                 -------            ---               -------             -----
<S>                                                              <C>               <C>               <C>               <C>
Net Cash From Operations (See F-6 Page 10 for detail)


Investment Activities
  Capital expenditures ..............................
  Contribution - partnerships .......................
  Purchase of investment assets .....................
  Other investments - net ...........................

Net Investment Activities ...........................


Financing Activities
  Dividends paid ....................................
  Capital contributions .............................
  Retirement of long-term debt ......................
  Issuance of common stock -
    Issued by Registrant ............................
    Issued by Subsidiary to Registrant ..............
  Issuance of long-term debt -
    Issued by Registrant ............................
    Issued by Subsidiary to Registrant ..............
  Issuance (Repayment) of short-term debt ...........
  Other financing activities ........................

Net Financing Activities ............................


Increase in cash and temporary cash investments .....
Cash and temporary cash investments at
 beginning of year ..................................

Cash and temporary cash investments at
 end of year (a) ....................................

Supplemental Disclosures of Cash Flow Information
  Cash paid for interest ............................
  Cash paid for income taxes (net of refunds) .......
</TABLE>

(a) The Corporation considers all highly short-term investments to be cash
equivalents. Balance includes intercompany money pool balances, which are
reported as intercompany accounts receivable on the balance sheet.


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   137
F-6 (6 of 10)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES

                      Consolidating Statement of Cash Flows
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                             Consoli-
                                                          F-6       F-6       F-6        F-6                  dating     Consoli-
                                                        Page 7     Page 8    Page 9     Page 10  Combined     Entries     dated
                                                       --------   --------   --------   ------    --------    --------   --------
<S>                                                    <C>        <C>        <C>       <C>        <C>         <C>        <C>
Net Income Reconciliation
  Net income (loss) ................................                                                                      273,336
  Items not requiring (providing) cash:
    Equity in undistributed earnings of subsidiaries                                                                           --
    Depreciation and depletion .....................                                                                      221,273
    Deferred income taxes ..........................                                                                       29,283
    Earnings from equity inv., net of distributions                                                                         2,371
    Other - net ....................................                                                                       31,860

  Changes in Components of working capital:
    Accounts receivable ............................                                                                     (199,143)
    Gas inventory ..................................                                                                       11,038
    Prepayments ....................................                                                                      (33,620)
    Accounts payable ...............................                                                                      186,806
    Accrued taxes ..................................                                                                      (30,415)
    Accrued interest ...............................                                                                       (1,188)
    Estimated rate refunds .........................                                                                      (45,515)
    Estimated supplier obligations .................                                                                      (41,199)
    Under/Overrecovered gas costs ..................                                                                      147,838
    Exchange gas payable ...........................                                                                      (11,608)
    Other working capital ..........................                                                                      (72,928)
                                                                                                                         --------
Net Cash From Operations ...........................                                                                      468,189
                                                                                                                         ========
</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   138
F-6 (7 of 10)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES

                      Consolidating Statement of Cash Flows
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                                         F-6 Page 7
                                                         CNR (a)         TCO         CGT         CLG (a)      CKY          Total
                                                         -------      --------      -------      ------      -------      --------
<S>                                                      <C>          <C>           <C>          <C>         <C>          <C>
Net Income Reconciliation
  Net income .......................................                   144,093       15,328                   11,639
  Items not requiring (providing) cash:
    Equity in undistributed earnings of subsidiaries                        --           --                       --
    Depreciation and depletion .....................                    81,192       23,133                    6,704
    Deferred income taxes ..........................                    49,050       (6,347)                  (2,743)
    Earnings from equity inv., net of distributions                         --         (440)                      --
    Other - net ....................................                     4,618       (2,980)                  (1,420)

  Changes in Components of working capital:
    Accounts receivable ............................                    83,629       12,067                    1,568
    Gas inventory ..................................                        --           --                      499
    Prepayments ....................................                     1,188          716                       (4)
    Accounts payable ...............................                    24,211         (683)                  (4,790)
    Accrued taxes ..................................                     1,955       (1,902)                   2,058
    Accrued interest ...............................                       305            9                     (565)
    Estimated rate refunds .........................                   (43,101)       3,505                    1,012
    Estimated supplier obligations .................                   (41,199)          --                       --
    Under/Overrecovered gas costs ..................                        --           --                    9,911
    Exchange gas payable ...........................                    (9,201)       2,734                   (1,637)
    Other working capital ..........................                   (26,552)       1,377                   (4,455)
                                                                      --------      -------                  -------
Net Cash From Operations ...........................                   270,188       46,517                   17,777
                                                                      ========      =======                  =======
</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   139
F-6 (8 of 10)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES

                      Consolidating Statement of Cash Flows
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                                         F-6 Page 8
                                                           COH          CMD         CPA           COS          CG           Total
                                                         --------      ------      -------      -------      --------      --------
<S>                                                      <C>           <C>         <C>          <C>          <C>           <C>
Net Income Reconciliation
  Net income (loss) ................................       52,426       3,053       30,555       12,127
  Items not requiring (providing) cash:
    Equity in undistributed earnings of subsidiaries           --          --           --           --
    Depreciation and depletion .....................       44,918       2,700       14,714        9,206
    Deferred income taxes ..........................      (31,182)       (366)         680       (1,945)
    Earnings from equity inv., net of distributions            --          --           --           --
    Other - net ....................................       (4,629)        (59)      (1,715)        (330)

  Changes in Components of working capital:
    Accounts receivable ............................        9,041         427        1,844       (2,777)
    Gas inventory ..................................      (11,296)      1,379       17,235        3,221
    Prepayments ....................................       (5,676)       (386)        (414)        (207)
    Accounts payable ...............................       23,907      (1,553)     (16,407)           7
    Accrued taxes ..................................       21,547         515         (924)       4,633
    Accrued interest ...............................       (2,058)         (1)        (992)         (18)
    Estimated rate refunds .........................      (11,340)        153        2,100        2,156
    Estimated supplier obligations .................           --          --           --           --
    Under/Overrecovered gas costs ..................      129,918       2,771          146        5,092
    Exchange gas payable ...........................      (10,968)       (139)      (3,865)       2,278
    Other working capital ..........................      (70,005)       (934)      (1,240)       1,533
                                                         --------      ------      -------      -------
Net Cash From Operations ...........................      134,603       7,560       41,717       34,976
                                                         ========      ======      =======      =======
</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   140
F-6 (9 of 10)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES

                      Consolidating Statement of Cash Flows
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                                        F-6 Page 9
                                                           CS          CIC         CES (a)       CPC       TVC (a)       Total
                                                         -------      ------      --------      ------     ------      --------
<S>                                                      <C>          <C>         <C>           <C>        <C>         <C>
Net Income Reconciliation
  Net income (loss) ................................      (1,231)
  Items not requiring (providing) cash:
    Equity in undistributed earnings of subsidiaries          --
    Depreciation and depletion .....................       5,476
    Deferred income taxes ..........................      (1,918)
    Earnings from equity inv., net of distributions           --
    Other - net ....................................       5,685

  Changes in Components of working capital:
    Accounts receivable ............................     (42,095)
    Gas inventory ..................................          --
    Prepayments ....................................         (75)
    Accounts payable ...............................       4,805
    Accrued taxes ..................................      (1,899)
    Accrued interest ...............................         (69)
    Estimated rate refunds .........................          --
    Estimated supplier obligations .................          --
    Under/Overrecovered gas costs ..................          --
    Exchange gas payable ...........................          --
    Other working capital ..........................        (761)
                                                         -------
Net Cash From Operations ...........................     (32,082)
                                                         =======
</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   141
F-6 (10 of 10)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES

                      Consolidating Statement of Cash Flows
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                                      F-6 Page 10
                                                                TCC (a)            CAT              CNS (a)             Total
                                                                -------            ---              -------             -----
<S>                                                             <C>               <C>              <C>                 <C>
Net Income Reconciliation
  Net income (loss) ...................................         
  Items not requiring (providing) cash:
    Equity in undistributed earnings of subsidiaries...         
    Depreciation and depletion ........................         
    Deferred income taxes .............................         
    Earnings from equity inv., net of distributions....         
    Other - net .......................................         

  Changes in Components of working capital:
    Accounts receivable ...............................         
    Gas inventory .....................................         
    Prepayments .......................................         
    Accounts payable ..................................         
    Accrued taxes .....................................         
    Accrued interest ..................................         
    Estimated rate refunds ............................         
    Estimated supplier obligations ....................         
    Under/Overrecovered gas costs .....................         
    Exchange gas payable ..............................         
    Other working capital .............................         
                                                                
Net Cash From Operations ..............................         
                                                                
</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   142
F-6A (1 of 6)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                 Columbia Electric Corporation and Subsidiaries
                      Consolidating Statement of Cash Flows
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                              F-6A          F-6A                      Consolidating       TVC
                                                             Page 2        Page 3         Combined        Entries      Consolidated
                                                             ------        ------         --------        -------      ------------
<S>                                                          <C>           <C>            <C>         <C>              <C>
Net Cash From Operations (See F-6A Page 4 for detail)..    

Investment Activities
  Capital expenditures ................................    
  Contribution - partnerships .........................    
  Purchase of investment assets .......................    
  Other investments - net .............................    
                                                           

Net Investment Activities .............................    
                                                           

Financing Activities
  Dividends paid ......................................    
  Capital contributions ...............................    
  Retirement of long-term debt ........................    
  Issuance of common stock -
    Issued by Registrant ..............................    
    Issued by Subsidiary to Registrant ................    
  Issuance of long-term debt -
    Issued by Registrant ..............................    
    Issued by Subsidiary to Registrant ................    
  Issuance (Repayment) of short-term debt .............    
  Other financing activities ..........................    
                                                           
Net Financing Activities ..............................    

Increase in cash and temporary cash investments .......    
Cash and temporary cash investments at
 beginning of year ....................................    
                                                           
Cash and temporary cash investments at
 end of year (a) ......................................    
                                                           

Supplemental Disclosures of Cash Flow Information
   Cash paid for interest .............................    
   Cash paid for income tax (net of refunds) ..........    
</TABLE>

(a)  The Corporation considers all highly liquid debt instruments to be cash
     equivalents. Balance includes intercompany money pool balances, which are
     reported as intercompany accounts receivable on the balance sheet.

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   143
F-6A (2 of 6)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                 Columbia Electric Corporation and Subsidiaries
                      Consolidating Statement of Cash Flows
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                                    F-6A Page 2
                                                             BGC     BLC      GGC    GLC      PGC      PLC       TVC     Total
                                                             ---     ---      ---    ---      ---      ---       ---     -----
<S>                                                        <C>      <C>      <C>    <C>      <C>      <C>      <C>      <C>
Net Cash From Operations (See F-6A Page 5 for detail)..   

Investment Activities
  Capital expenditures ................................   
  Contribution - partnerships .........................   
  Purchase of investment assets .......................   
  Other investments - net .............................   
                                                          

Net Investment Activities .............................   
                                                          

Financing Activities
  Dividends paid ......................................   
  Capital contributions ...............................   
  Retirement of long-term debt ........................   
  Issuance of common stock -
    Issued by Registrant ..............................   
    Issued by Subsidiary to Registrant ................   
  Issuance of long-term debt -
    Issued by Registrant ..............................   
    Issued by Subsidiary to Registrant ................   
  Issuance (Repayment) of short-term debt .............   
  Other financing activities ..........................   
                                                          

Net Financing Activities ..............................   

Increase in cash and temporary cash investments .......   
Cash and temporary cash investments at
 beginning of year ....................................   
                                                          
Cash and temporary cash investments at
 end of year (a) ......................................   
                                                          

Supplemental Disclosures of Cash Flow Information
   Cash paid for interest .............................   
   Cash paid for income tax (net of refunds) ..........   
</TABLE>

(a)  The Corporation considers all highly liquid debt instruments to be cash
     equivalents. Balance includes intercompany money pool balances, which are
     reported as intercompany accounts receivable on the balance sheet.

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   144
F-6A (3 of 6)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                 Columbia Electric Corporation and Subsidiaries
                      Consolidating Statement of Cash Flows
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                                        F-6A Page 3
                                                           VGC         VLC           RL           FC       TVC9  TVC10   Total
                                                           ---         ---           --           --       ----  -----   -----
<S>                                                        <C>        <C>          <C>           <C>       <C>   <C>    <C>
Net Cash From Operations (See F-6A Page 6 for detail)..  

Investment Activities
  Capital expenditures ................................  
  Contribution - partnerships .........................  
  Purchase of investment assets .......................  
  Other investments - net .............................  
                                                         
Net Investment Activities .............................  
                                                         

Financing Activities
  Dividends paid ......................................  
  Capital contributions ...............................  
  Retirement of long-term debt ........................  
  Issuance of common stock -
    Issued by Registrant ..............................  
    Issued by Subsidiary to Registrant ................  
  Issuance of long-term debt -
    Issued by Registrant ..............................  
    Issued by Subsidiary to Registrant ................  
  Issuance (Repayment) of short-term debt .............  
  Other financing activities ..........................  
                                                         
Net Financing Activities ..............................  

Increase in cash and temporary cash investments .......  
Cash and temporary cash investments at
 beginning of year ....................................  
                                                         
Cash and temporary cash investments at
 end of year (a) ......................................  
                                                         

Supplemental Disclosures of Cash Flow Information
   Cash paid for interest .............................  
   Cash paid for income tax (net of refunds) ..........  
</TABLE>

(a)  The Corporation considers all highly liquid debt instruments to be cash
     equivalents. Balance includes intercompany money pool balances, which are
     reported as intercompany accounts receivable on the balance sheet.

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   145
F-6A (4 of 6)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                 Columbia Electric Corporation and Subsidiaries
                      Consolidating Statement of Cash Flows
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                             F-6A           F-6A                     Consolidating       TVC
                                                            Page 5         Page 6        Combined       Entries       Consolidated
                                                            ------         ------        --------       -------       ------------
<S>                                                         <C>            <C>            <C>        <C>              <C>
Net Income Reconciliation
  Net income (loss) ...................................  
  Items not requiring (providing) cash:
    Equity in undistributed earnings of subsidiaries...  
    Depreciation and depletion ........................  
    Deferred income taxes .............................  
    Earnings from equity inv., net of distributions....  
    Other - net .......................................  
  Changes in Components of working capital:
    Accounts receivable ...............................  
    Gas inventory .....................................  
    Prepayments .......................................  
    Accounts payable ..................................  
    Accrued taxes .....................................  
    Accrued interest ..................................  
    Estimated rate refunds ............................  
    Estimated supplier obligations ....................  
    Under/Overrecovered gas costs .....................  
    Exchange gas payable ..............................  
    Other working capital .............................  
                                                         
Net Cash From Operations ..............................  
                                                         
</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   146
F-6A (5 of 6)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                 Columbia Electric Corporation and Subsidiaries
                      Consolidating Statement of Cash Flows
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                                        F-6A Page 5
                                                          BGC       BLC       GGC    GLC    PGC       PLC        TVC       Total
                                                          ---       ---       ---    ---    ---       ---        ---       -----
<S>                                                     <C>        <C>        <C>    <C>    <C>      <C>        <C>        <C>
Net Income Reconciliation
  Net income (loss) .................................. 
  Items not requiring (providing) cash:
    Equity in undistributed earnings of subsidiaries.. 
    Depreciation and depletion ....................... 
    Deferred income taxes ............................ 
    Earnings from equity inv., net of distributions... 
    Other - net ...................................... 
  Changes in Components of working capital:
    Accounts receivable .............................. 
    Gas inventory .................................... 
    Prepayments ...................................... 
    Accounts payable ................................. 
    Accrued taxes .................................... 
    Accrued interest ................................. 
    Estimated rate refunds ........................... 
    Estimated supplier obligations ................... 
    Under/Overrecovered gas costs .................... 
    Exchange gas payable ............................. 
    Other working capital ............................ 
                                                       
Net Cash From Operations ............................. 
                                                       
</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   147
F-6A (6 of 6)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                 Columbia Electric Corporation and Subsidiaries
                      Consolidating Statement of Cash Flows
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                                        F-6A Page 6
                                                          VGC         VLC           RL         FC      TVC9     TVC10     Total
                                                          ---         ---           --         --      ----     -----     -----
<S>                                                       <C>        <C>          <C>          <C>     <C>      <C>     <C>
Net Income Reconciliation
  Net income (loss) ..................................   
  Items not requiring (providing) cash:
    Equity in undistributed earnings of subsidiaries..   
    Depreciation and depletion .......................   
    Deferred income taxes ............................   
    Earnings from equity inv., net of distributions...   
    Other - net ......................................   
  Changes in Components of working capital:
    Accounts receivable ..............................   
    Gas inventory ....................................   
    Prepayments ......................................   
    Accounts payable .................................   
    Accrued taxes ....................................   
    Accrued interest .................................   
    Estimated rate refunds ...........................   
    Estimated supplier obligations ...................   
    Under/Overrecovered gas costs ....................   
    Exchange gas payable .............................   
    Other working capital ............................   
                                                         
Net Cash From Operations .............................   
                                                         
</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   148
F-6B (1 of 2)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                   Tristar Capital Corporation and Subsidiary
                      Consolidating Statement of Cash Flows
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                  Consoli-
                                                                                                  dating          TCC
                                                          TGT           TCC       Combined        Entries    Consolidated
                                                          ---           ---       --------        -------    ------------
<S>                                                       <C>          <C>         <C>            <C>         <C>
Net Cash From Operations (refer to F-6B (2 of 2))..     
                                                        
Investment Activities
  Capital expenditures ............................     
  Contribution - partnerships .....................     
  Purchase of investment assets ...................     
  Other investments - net .........................     
                                                        
Net Investment Activities .........................     

Financing Activities
  Dividends paid ..................................     
  Capital contributions ...........................     
  Retirement of long-term debt ....................     
  Issuance of common stock -
    Issued by Registrant ..........................     
    Issued by Subsidiary to Registrant ............     
  Issuance of long-term debt -
    Issued by Registrant ..........................     
    Issued by Subsidiary to Registrant ............     
  Issuance (Repayment) of short-term debt .........     
  Other financing activities ......................     
                                                        
Net Financing Activities ..........................     

Increase in cash and temporary cash investments ...     
Cash and temporary cash investments at
 beginning of year ................................     
                                                        
Cash and temporary cash investments at
 end of year (a) ..................................     
                                                        

Supplemental Disclosures of Cash Flow Information
  Cash paid for interest ..........................     
  Cash paid for income taxes (net of refunds) .....     
</TABLE>

(a) The Corporation considers all highly liquid debt instruments to be cash
equivalents. Balance includes intercompany money pool balances, which are
reported as intercompany accounts receivable on the balance sheet.

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   149
F-6B (2 of 2)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                   Tristar Capital Corporation and Subsidiary
                      Consolidating Statement of Cash Flows
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                        Consoli-
                                                                                                         dating           TCC
                                                              TGT            TCC         Combined        Entries       Consolidated
                                                              ---            ---         --------        -------       ------------
<S>                                                           <C>            <C>         <C>            <C>            <C>
Net Income Reconciliation
  Net income (loss) ...................................   
  Items not requiring (providing) cash:
    Equity in undistributed earnings of subsidiaries...   
    Depreciation and depletion ........................   
    Deferred income taxes .............................   
    Earnings from equity inv., net of distributions....   
    Other - net .......................................   
  Changes in Components of working capital:
    Accounts receivable ...............................   
    Gas inventory .....................................   
    Prepayments .......................................   
    Accounts payable ..................................   
    Accrued taxes .....................................   
    Accrued interest ..................................   
    Estimated rate refunds ............................   
    Estimated supplier obligations ....................   
    Under/Overrecovered gas costs .....................   
    Exchange gas payable ..............................   
    Other working capital .............................   
                                                          
Net Cash From Operations ..............................   
                                                          
</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   150
    F-6C (1 of 2)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                     Columbia LNG Corporation and Subsidiary
                      Consolidating Statement of Cash Flows
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)


<TABLE>
<CAPTION>
                                                                                         Consoli-
                                                                                          dating            CLG
                                                        CLNG        CLG     Combined     Entries   Consolidated
                                                        ----        ---     --------     -------   ------------



<S>                                                   <C>         <C>      <C>           <C>      <C>
Net Cash From Operations (refer to F-6C (2 of 2))   
                                                    
Investment Activities
  Capital expenditures                              
  Contribution - partnerships                       
  Purchase of investment assets                     
  Other investments - net                           
                                                    

Net Investment Activities                           
                                                    


Financing Activities
  Dividends paid                                    
  Capital contributions                             
  Retirement of long-term debt                      
  Issuance of common stock -
    Issued by Registrant                            
    Issued by Subsidiary to Registrant              
  Issuance of long-term debt -
    Issued by Registrant                            
    Issued by Subsidiary to Registrant              
  Issuance (Repayment) of short-term debt           
  Other financing activities                        
                                                    

Net Financing Activities                            
                                                    


Increase in cash and temporary cash investments     
Cash and temporary cash investments at
 beginning of year                                  
                                                    

Cash and temporary cash investments at
 end of year (a)                                    
                                                    

Supplemental Disclosures of Cash Flow Information
  Cash paid for interest                            
  Cash paid for income taxes (net of refunds)       
</TABLE>

(a) The Corporation considers all highly liquid debt instruments to be cash
equivalents Balance includes intercompany money pool balances, which are
reported as intercompany accounts receivable on the balance sheet


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   151
    F-6C (2 of 2)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                     Columbia LNG Corporation and Subsidiary
                      Consolidating Statement of Cash Flows
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                            Consoli-
                                                                                              dating             CLG
                                                            CLNG         CLG   Combined      Entries    Consolidated
                                                            ----         ---   --------      -------    ------------


<S>                                                           <C>      <C>         <C>           <C>       <C>
Net Income Reconciliation
  Net income (loss) ...................................   
  Items not requiring (providing) cash:
    Equity in undistributed earnings of subsidiaries...   
    Depreciation and depletion ........................   
    Deferred income taxes .............................   
    Earnings from equity inv, net of distributions ....   
    Other - net .......................................   

  Changes in Components of working capital:
    Accounts receivable ...............................   
    Gas inventory .....................................   
    Prepayments .......................................   
    Accounts payable ..................................   
    Accrued taxes .....................................   
    Accrued interest ..................................   
    Estimated rate refunds ............................   
    Estimated supplier obligations ....................   
    Under/Overrecovered gas costs .....................   
    Exchange gas payable ..............................   
    Other working capital .............................   
                                                          

Net Cash From Operations ..............................   
                                                          
</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   152
F-6D (1 of 2)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
              Columbia Energy Services Corporation and Subsidiaries
          Consolidating Statement of Cash Flows as of December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                            Consoli-
                                                                                                              dating      CES
                                                         CEM       CPM      CSP        CES      Combined     Entries    Consolidated
                                                         ---       ---      ---        ---      --------     -------    ------------
<S>                                                   <C>       <C>       <C>        <C>        <C>         <C>         <C>
Net Cash From Operations (refer to F-6D (2 of 2)).. 
                                                    


Investment Activities
  Capital expenditures ............................ 
  Contribution - partnerships ..................... 
  Purchase of investment assets ................... 
  Other investments - net ......................... 
                                                    
Net Investment Activities ......................... 
                                                    


Financing Activities
  Dividends paid .................................. 
  Capital contributions ........................... 
  Retirement of long-term debt .................... 
  Issuance of common stock -
    Issued by Registrant .......................... 
    Issued by Subsidiary to Registrant ............ 
  Issuance of long-term debt - .................... 
    Issued by Registrant .......................... 
    Issued by Subsidiary to Registrant ............ 
  Issuance (Repayment) of short-term debt ......... 
  Other financing activities ...................... 
                                                    
Net Financing Activities .......................... 
                                                    


Increase in cash and temporary cash investments.... 
Cash and temporary cash investments at
 beginning of year ................................ 
                                                    
Cash and temporary cash investments at
 end of year  (a) ................................. 
                                                    

Supplemental Disclosures of Cash Flow Information
  Cash paid for interest .......................... 
  Cash paid for income taxes (net of refunds) ..... 
</TABLE>


(a) The Corporation considers all highly liquid debt instruments to be cash
equivalents. Balance includes intercompany money pool balances, which are
reported as intercompany accounts receivable on the balance sheet.


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   153
F-6D (2 of 2)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
              Columbia Energy Services Corporation and Subsidiaries
          Consolidating Statement of Cash Flows as of December 31, 1997
            (Not covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>


                                                               CEM         CPM            CSP          CES
                                                               ---         ---            ---          ---
Net Income Reconciliation
<S>                                                            <C>         <C>         <C>          <C>
  Net income (loss) ..................................  
  Items not requiring (providing) cash:
    Equity in undistributed earnings of subsidiaries..  
    Depreciation and depletion .......................  
    Deferred income taxes ............................  
    Earnings from equity inv., net of distributions...  
    Other - net ......................................  

  Changes in Components of working capital:
    Accounts receivable ..............................  
    Gas inventory ....................................  
    Prepayments ......................................  
    Accounts payable .................................  
    Accrued taxes ....................................  
    Accrued interest .................................  
    Estimated rate refunds ...........................  
    Estimated supplier obligations ...................  
    Under/Overrecovered gas costs ....................  
    Exchange gas payable .............................  
    Other working capital ............................  
                                                        

Net Cash From Operations .............................  
                                                        
</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED


<TABLE>
<CAPTION>
                                                                        Consoli-
                                                                          dating       CES
                                                         Combined        Entries   Consolidated
                                                         --------        -------   ------------

<S>                                                      <C>            <C>        <C>
  Net income (loss) .................................. 
  Items not requiring (providing) cash:
    Equity in undistributed earnings of subsidiaries.. 
    Depreciation and depletion ....................... 
    Deferred income taxes ............................ 
    Earnings from equity inv., net of distributions... 
    Other - net ...................................... 

  Changes in Components of working capital:
    Accounts receivable .............................. 
    Gas inventory .................................... 
    Prepayments ...................................... 
    Accounts payable ................................. 
    Accrued taxes .................................... 
    Accrued interest ................................. 
    Estimated rate refunds ........................... 
    Estimated supplier obligations ................... 
    Under/Overrecovered gas costs .................... 
    Exchange gas payable ............................. 
    Other working capital ............................ 
                                                       

Net Cash From Operations ............................. 
                                                       
</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   154
F-6E (1 of 2)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
              Columbia Network Services Corporation and Subsidiary
                      Consolidating Statement of Cash Flows
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)


<TABLE>
<CAPTION>


                                                                                 CMC         CNS      Combined
                                                                                 ---         ---      --------
<S>                                                                           <C>         <C>         <C>
Net Cash From Operations (refer to F-6E (2 of 2)) .......................   
                                                                            


Investment Activities
  Capital expenditures ..................................................   
  Contribution - partnerships ...........................................   
  Purchase of investment assets .........................................   
  Other investments - net ...............................................   
                                                                            

Net Investment Activities ...............................................   
                                                                            


Financing Activities
  Dividends paid ........................................................   
  Capital contributions .................................................   
  Retirement of long-term debt ..........................................   
  Issuance of common stock -
    Issued by Registrant ................................................   
    Issued by Subsidiary to Registrant ..................................   
  Issuance of long-term debt -
    Issued by Registrant ................................................   
    Issued by Subsidiary to Registrant ..................................   
  Issuance (Repayment) of short-term debt ...............................   
  Other financing activities ............................................   
                                                                            

Net Financing Activities ................................................   
                                                                            


Increase in cash and temporary cash investments .........................   
Cash and temporary cash investments at
 beginning of year ......................................................   
                                                                            

Cash and temporary cash investments at
 end of year  (a) .......................................................   
                                                                            


Supplemental Disclosures of Cash Flow Information
  Cash paid for interest ................................................       
  Cash paid for income taxes (net of refunds) ...........................       
</TABLE>

                        CONFIDENTIAL TREATMENT REQUESTED


<TABLE>
<CAPTION>
                                                                          Consoli-
                                                                           dating           CNS
                                                                          Entries  Consolidated
                                                                          -------  ------------
<S>                                                                       <C>      <C>
Net Cash From Operations (refer to F-6E (2 of 2)) .......................  
Investment Activities
  Capital expenditures ..................................................  
  Contribution - partnerships ...........................................  
  Purchase of investment assets .........................................  
  Other investments - net ...............................................  
                                                                           

Net Investment Activities ...............................................  
                                                                           


Financing Activities
  Dividends paid ........................................................  
  Capital contributions .................................................  
  Retirement of long-term debt ..........................................  
  Issuance of common stock -
    Issued by Registrant ................................................  
    Issued by Subsidiary to Registrant ..................................  
  Issuance of long-term debt -
    Issued by Registrant ................................................  
    Issued by Subsidiary to Registrant ..................................  
  Issuance (Repayment) of short-term debt ...............................  
  Other financing activities ............................................  
                                                                           

Net Financing Activities ................................................  
                                                                           


Increase in cash and temporary cash investments .........................  
Cash and temporary cash investments at
 beginning of year ......................................................  
                                                                           

Cash and temporary cash investments at
 end of year  (a) .......................................................  
                                                                           


Supplemental Disclosures of Cash Flow Information
  Cash paid for interest ................................................  
  Cash paid for income taxes (net of refunds) ...........................  
</TABLE>


(a) The Corporation considers all highly liquid debt instruments to be cash
equivalents. Balance includes intercompany money pool balances, which are
reported as intercompany accounts receivable on the balance sheet.


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   155
F-6E (2 of 2)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
              Columbia Network Services Corporation and Subsidiary
                      Consolidating Statement of Cash Flows
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                      Consoli-
                                                                                       dating      CNS
                                                         CMC        CNS     Combined  Entries  Consolidated
                                                         ---        ---     --------  -------  ------------
<S>                                                     <C>      <C>         <C>               <C>
Net Income Reconciliation
  Net income (loss) ..................................  
  Items not requiring (providing) cash:
    Equity in undistributed earnings of subsidiaries..  
    Depreciation and depletion .......................  
    Deferred income taxes ............................  
    Earnings from equity inv, net of distributions....  
    Other - net ......................................  

  Changes in Components of working capital:
    Accounts receivable ..............................  
    Gas inventory ....................................  
    Prepayments ......................................  
    Accounts payable .................................  
    Accrued taxes ....................................  
    Accrued interest .................................  
    Estimated rate refunds ...........................  
    Estimated supplier obligations ...................  
    Under/Overrecovered gas costs ....................  
    Exchange gas payable .............................  
    Other working capital ............................  
                                                        

Net Cash From Operations .............................  
                                                        
</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   156
    F-6F (1 of 2)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                 Columbia Natural Resources, Inc. and Subsidiary
                      Consolidating Statement of Cash Flows
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)


<TABLE>
<CAPTION>
                                                                                                   Consoli-
                                                                                                     dating             CNR
                                                                  CNR       Alamco    Combined      Entries    Consolidated
                                                                  ---       ------    --------      -------    ------------



<S>                                                           <C>          <C>        <C>           <C>        <C>
Net Cash From Operations (refer to F-6C (2 of 2)) ........




Investment Activities
  Capital expenditures ...................................
  Contribution - partnerships ............................
  Purchase of investment assets ..........................
  Other investments - net ................................


Net Investment Activities ................................



Financing Activities
  Dividends paid .........................................
  Capital contributions ..................................
  Retirement of long-term debt ...........................
  Issuance of common stock -
    Issued by Registrant .................................
    Issued by Subsidiary to Registrant ...................
  Issuance of long-term debt -
    Issued by Registrant .................................
    Issued by Subsidiary to Registrant ...................
  Issuance (Repayment) of short-term debt ................
  Other financing activities .............................


Net Financing Activities .................................



Increase (Decrease) in cash and temporary cash investments
Cash and temporary cash investments at
 beginning of year .......................................


Cash and temporary cash investments at
 end of year (a) .........................................


Supplemental Disclosures of Cash Flow Information
  Cash paid for interest .................................
  Cash paid for income taxes (net of refunds) ............
</TABLE>


(a) The Corporation considers all highly liquid debt instruments to be cash
equivalents. Balance includes intercompany money pool balances, which are
reported as intercompany accounts receivable on the balance sheet.

                        CONFIDENTIAL TREATMENT REQUESTED

<PAGE>   157
    F-6F (2 of 2)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                 Columbia Natural Resources, Inc. and Subsidiary
                      Consolidating Statement of Cash Flows
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                                                                      Consoli-
                                                                                                        dating            CNR
                                                                  CNR        Alamco     Combined       Entries   Consolidated
                                                                  ---        ------     --------       -------   ------------


<S>                                                              <C>          <C>         <C>          <C>          <C>
Net Income Reconciliation
  Net income (loss) .......................................
  Items not requiring (providing) cash:
    Equity in undistributed earnings of subsidiaries ......
    Depreciation and depletion ............................
    Deferred income taxes .................................
    Earnings from equity inv., net of distributions .......
    Other - net ...........................................

  Changes in Components of working capital:
    Accounts receivable ...................................
    Prepayments ...........................................
    Accounts payable ......................................
    Accrued taxes .........................................
    Accrued interest ......................................
    Estimated rate refunds ................................
    Estimated supplier obligations ........................
    Under/Overrecovered gas costs .........................
    Exchange gas payable ..................................
    Other working capital .................................


Net Cash From Operations ..................................

</TABLE>
                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   158
    F-6G (1 of 2)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                          Alamco, Inc. and Subsidiaries
                      Consolidating Statement of Cash Flows
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)



<TABLE>
<CAPTION>
                                                                  Alamco    Hawg Hauling     Alamco - Deleware
                                                                  ------    ------------     -----------------



<S>                                                               <C>      <C>                      <C>
Net Cash From Operations (refer to F-6C (2 of 2)) ............




Investment Activities
  Capital expenditures .......................................
  Contribution - partnerships ................................
  Purchase of investment assets ..............................
  Other investments - net ....................................


Net Investment Activities ....................................



Financing Activities
  Intercompany dividends paid ................................
  Capital contributions ......................................
  Retirement of long-term debt ...............................
  Issuance of common stock - .................................
    Issued by Registrant .....................................
    Issued by Subsidiary to Registrant .......................
  Issuance of long-term debt - ...............................
    Issued by Registrant .....................................
    Issued by Subsidiary to Registrant .......................
  Issuance (Repayment) of short-term debt ....................
  Other financing activities .................................


Net financing activities .....................................



Increase  (Decrease) in cash and temporary cash investments ..
Cash and temporary cash investments at
 beginning of year ...........................................


Cash and temporary cash investments at
 end of year (a) .............................................


Supplemental Disclosures of Cash Flow Information
  Cash paid for interest .....................................
  Cash paid for income taxes (net of refunds) ................
</TABLE>
                        CONFIDENTIAL TREATMENT REQUESTED


<TABLE>
<CAPTION>
                                                                             Consoli-
                                                                               dating      Alamco
                                                                Combined      Entries   Consolidated
                                                                --------      -------   ------------
<S>                                                             <C>          <C>        <C>
Net Cash From Operations (refer to F-6C (2 of 2)) ............



Investment Activities
  Capital expenditures .......................................
  Contribution - partnerships ................................
  Purchase of investment assets ..............................
  Other investments - net ....................................



Net Investment Activities ....................................





Financing Activities
  Intercompany dividends paid ................................
  Capital contributions ......................................
  Retirement of long-term debt ...............................
  Issuance of common stock - .................................
    Issued by Registrant .....................................
    Issued by Subsidiary to Registrant .......................
  Issuance of long-term debt - ...............................
    Issued by Registrant .....................................
    Issued by Subsidiary to Registrant .......................
  Issuance (Repayment) of short-term debt ....................
  Other financing activities .................................



Net financing activities .....................................





Increase  (Decrease) in cash and temporary cash investments ..
Cash and temporary cash investments at
 beginning of year ...........................................



Cash and temporary cash investments at
 end of year (a) .............................................



Supplemental Disclosures of Cash Flow Information
  Cash paid for interest .....................................
  Cash paid for income taxes (net of refunds) ................
</TABLE>

(a) The Corporation considers all highly liquid debt instruments to be cash
equivalents. Balance includes intercompany money pool balances, which are
reported as intercompany accounts receivable on the balance sheet.

                        CONFIDENTIAL TREATMENT REQUESTED
<PAGE>   159
    F-6G (2 of 2)

                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                          Alamco, Inc. and Subsidiaries
                      Consolidating Statement of Cash Flows
                          Year Ended December 31, 1997
            (Not Covered by Report of Independent Public Accountants)
                                  ($ Thousands)

<TABLE>
<CAPTION>
                                                        Alamco     Hawg Hauling  Alamco - Deleware
                                                        ------     ------------  -----------------
<S>                                                     <C>        <C>           <C>
Net Income Reconciliation
  Net income (loss) ..................................  
  Items not requiring (providing) cash: ..............  
    Equity in undistributed earnings of subsidiaries..  
    Depreciation and depletion .......................  
    Deferred income taxes ............................  
    Loss (Gain) on Sale of facilities ................  
    Earnings from equity inv., net of distributions...  
    Other - net ......................................  

  Changes in Components of working capital:
    Accounts receivable, net - Customers .............  
    Accounts receivable, net - Intercompany ..........  
    Accounts receivable, net - Other .................  
    Other inventories at average cost ................  
    Prepayments ......................................  
    Accounts payable .................................  
    Accounts payable - intercompany...................  
    Accrued taxes ....................................  
    Accrued interest .................................  
    Estimated rate refunds ...........................  
    Estimated supplier obligations ...................  
    Under/Overrecovered gas costs ....................  
    Exchange gas payable .............................  
    Other working capital ............................  
                                                        

Net Cash From Operations .............................  
                                                        
</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED






<TABLE>
<CAPTION>
                                                                Consoli-
                                                                  dating    Alamco
                                                     Combined    Entries    Consolidated
                                                     --------    --------   ------------
<S>                                                  <C>         <C>        <C>
Net Income Reconciliation
  Net income (loss) .................................. 
  Items not requiring (providing) cash: ..............
    Equity in undistributed earnings of subsidiaries.. 
    Depreciation and depletion ....................... 
    Deferred income taxes ............................ 
    Loss (Gain) on Sale of facilities ................ 
    Earnings from equity inv., net of distributions... 
    Other - net ...................................... 


  Changes in Components of working capital:
    Accounts receivable, net - Customers ............. 
    Accounts receivable, net - Intercompany .......... 
    Accounts receivable, net - Other ................. 
    Other inventories at average cost ................ 
    Prepayments ...................................... 
    Accounts payable ................................. 
    Accounts payable - intercompany................... 
    Accrued taxes .................................... 
    Accrued interest ................................. 
    Estimated rate refunds ........................... 
    Estimated supplier obligations ................... 
    Under/Overrecovered gas costs .................... 
    Exchange gas payable ............................. 
    Other working capital ............................ 
                                                       


Net Cash From Operations ............................. 
                                                       
</TABLE>


                        CONFIDENTIAL TREATMENT REQUESTED

<PAGE>   160
                                    SIGNATURE

         The registrant has duly caused this annual report to be signed on its
behalf by the undersigned thereunto duly authorized pursuant to the requirements
of the Public Utility Holding Company Act of 1935, such company being a
registered holding company.

                                    COLUMBIA ENERGY GROUP

                                    By: /s/ J.W. GROSSMAN
                                        ----------------------------------------
                                        J. W. Grossman
                                        Vice President and Controller

Date:  April 30, 1998


52
<PAGE>   161
Item 10.Continued

         Exhibits filed as a part of this Report:

         A - Securities Exchange Act of 1934 Reports incorporated by reference

         B - Index to Corporate Organization & By-Laws Exhibits in the Report
             filed herewith and/or filed under cover of Form SE

         C - Indentures or Contracts incorporated by reference

         D - Tax Allocation Agreement for 1997 filed herewith

         E - Other Documents Prescribed by Rule or Order

         F - Report of Independent Public Accountants filed herewith

         G - Financial Data Tables

         H - Organizational Chart of Exempt Wholesale Generators or Foreign
             Utility Holding Companies

         I - Audited Financial Statements and Analytical Reviews and Conclusions
             Regarding Exempt Wholesale Generators or Foreign Utility Holding
             Companies


53
<PAGE>   162
EXHIBIT A

         The financial statements listed below included in Columbia Energy
         Group's 1997 Form 10-K filed with the Commission on March 18, 1998
         (File No. 1-1098) are incorporated herein by reference. The report of
         Arthur Andersen LLP, independent public accountants, dated January 23,
         1998 regarding such financial statements is included on Exhibit F filed
         herewith. The Corporation's 1997 Annual Report to Shareholders is filed
         under cover of Form SE.

         Financial Statements:

<TABLE>
<CAPTION>
                                                                                         Annual
                                                                                         Report
                                                                                          Page
                                                                                           No.
                                                                                         ------
<S>                                                                                      <C>
Statement of Consolidated Income for the year ended  December 31, 1997..............         39
Consolidated Balance Sheet as of December 31, 1997 .................................      40-41
Consolidated Statement of Cash Flows for the year ended December 31, 1997...........         42
Statement of Consolidated Common Stock Equity for the year ended December 31, 1997..         43
Notes to Consolidated Financial Statements .........................................      44-63
</TABLE>


54
<PAGE>   163
EXHIBIT B

Exhibit B. Index to corporate organization and by-laws exhibits filed pursuant
to the Public Utility Holding Company Act of 1935.

<TABLE>
<CAPTION>
                                                                                          Exhibit B Notes
                                                                                 ----------------------------------
                                                                                  Articles of            By-Laws or
                                                                                 Incorporation          Regulations
<S>                                                                              <C>                  <C>
Columbia Energy Group...........................................                       1-A (1)                   (2)
Atlantic Energy, Inc............................................                           (3)                   (4)
Columbia Atlantic Trading Corporation ..........................                       2-A (5)                   (6)
Columbia Coal Gasification Corporation..........................                           (7)                   (8)
Columbia Energy Services Corporation. ..........................                           (9)                  (10)
   Columbia Energy Marketing Corporation .......................                          (11)                  (12)
   Columbia Energy Power Marketing Corporation..................                 3-A, 4-A (13)              1-B (14)
    Columbia Service Partners, Inc..............................                          (15)                  (16)
Columbia Gas Development Corporation............................                          (17)                  (18)
Columbia Gas of Kentucky, Inc...................................                          (19)              2-B (20)
Columbia Gas of Maryland, Inc...................................                          (21)         3-B, 4-B (22)
Columbia Gas of Ohio, Inc. .....................................                          (23)              5-B (24)
Columbia Gas of Pennsylvania, Inc. .............................                         (25)               6-B (26)
Columbia Energy Group Service Corporation ......................                      5-A (27)              7-B (28)
Columbia Gas Transmission Corporation...........................                 6-A, 7-A (29)                  (30)
  Columbia Transmission Investment Corporation .................                          (31)                  (32)
Columbia Gulf Transmission Company .............................                      8-A (33)                  (34)
Columbia Insurance Corporation, Ltd.............................                          (35)                  (36)
Columbia LNG Corporation .......................................                      9-A (37)                  (38)
  CLNG Corporation..............................................                          (39)                  (40)
Columbia Natural Resources, Inc.................................                          (41)                  (42)
  Alamco, Inc...................................................                     10-A (43)              8-B (44)
Alamco-Delaware, Inc............................................                   11-A   (45)              9-B (46)
Hawg Hauling & Disposal, Inc....................................                     12-A (47)             10-B (48)
Columbia Networks Services Corporation..........................                          (49)                  (50)
   CNS Microwave, Inc...........................................                          (51)                  (52)
   Energy Net L.L.C.............................................                      13-A(53)              11-B(54)
Columbia Propane Corporation....................................               14-A, 15-A (55)             12-B (56)
Columbia Gas of Virginia, Inc...................................                     16-A (57)             13-B (58)
Commonwealth Propane, Inc. .....................................                          (59)                  (60)
Inland Gas Company, Inc., The ..................................                          (61)                  (62)
TriStar Capital Corporation ....................................                     17-A (63)                  (64)
  TriStar Gas Technologies, Inc. ...............................                          (65)                  (66)
TriStar Trading Inc. ...........................................                          (67)                  (68)
Columbia Electric Corporation...................................               18-A, 19-A (69)                  (70)
  TriStar Pedrick General Corporation...........................                          (71)                  (72)
  TriStar Pedrick Limited Corporation ..........................                          (73)                  (74)
  TriStar Fuel Cells Corporation ...............................                          (75)                  (76)
  TriStar Binghamton General Corporation .......................                          (77)                  (78)
  TriStar Binghamton Limited Corporation .......................                          (79)                  (80)
  TriStar Georgetown General Corporation .......................                          (81)                  (82)
  TriStar Georgetown Limited Corporation .......................                          (83)                  (84)
  TriStar Vineland General Corporation..........................                          (85)                  (86)

</TABLE>


55
<PAGE>   164
<TABLE>
<S>                                                                              <C>                  <C>
  TriStar Vineland Limited Corporation..........................                          (87)                  (88)
  TriStar Rumford Limited Corporation...........................                          (89)                  (90)
  TVC Nine Corporation .........................................                          (91)                  (92)
  TVC Ten Corporation ..........................................                          (93)                  (94)
</TABLE>


56
<PAGE>   165
EXHIBIT B (Continued)
NOTES:

         (1)      Restated Certificate of Incorporation as adopted by action of
                  the Board of Directors on October 19, 1988, filed as Exhibit
                  1-A to Form U5S (1988); corrected copy as of July 15, 1991,
                  filed as Exhibit 1-A to Form U5S (1991); restated copy as of
                  November 28, 1995, filed pursuant to Item 14 of Form 10-K
                  (1995); Certificate of Amendment of Certificate of
                  Incorporation of Columbia Energy Group, dated January 16,
                  1998, filed herewith as Exhibit 1-A to Form U5S (1997).

         (2)      By-Laws as of May 28, 1986, filed as Exhibit 1-B to Form U5S
                  (1986); amendments dated May 13, 1987 and November 18, 1987,
                  filed as Exhibit B, pages 13-15, to Form U5S (1987).

         (3)      Certificate of Incorporation of Atlantic Energy, Inc. as
                  amended through April 28, 1972, filed as Exhibit 1-A to Form
                  U5S (1981).

         (4)      By-Laws of Atlantic Energy, Inc. as amended through January
                  20, 1982, filed as Exhibit 1-B to Form U5S (1981); amendment
                  dated April 17, 1995, filed herewith as Exhibit 1-B to form
                  U5S (1996).

         (5)      CAT Restated Certificate of Incorporation as filed on February
                  27, 1989, filed as Exhibit 2-A to Form U5S (1988); amendment
                  dated August 18, 1997, filed herewith as Exhibit 2-A to Form
                  U5S (1997).

         (6)      CAT By-Laws as amended effective February 27, 1989, filed as
                  Exhibit 1-B to Form U5S (1988).

         (7)      Certificate of Incorporation, as amended through July 2, 1991,
                  filed as Exhibit 2-A to Form U5S (1991).

         (8)      By-Laws, as amended to November 6, 1970, filed as Exhibit 2-B
                  to Form U5S (1970).

         (9)      Certificate of Incorporation of Columbia Energy Services
                  Corporation (formerly The Inland Gas Company, Inc.) dated June
                  25, 1993, filed under cover of Form SE as Exhibit 1-B to Form
                  U5S (1993).

         (10)     By-Laws of Columbia Energy Services Corporation dated May 28,
                  1993, filed as Exhibit 2-B to Form U5S (1993).

         (11)     Certificate of Incorporation of Columbia Energy Marketing
                  Corporation dated August 3, 1995, filed as Exhibit 1-A to Form
                  U5S (1995).

         (12)     By-Laws of Columbia Energy Marketing Corporation dated August
                  3, 1995, filed as Exhibit 1-B to Form U5S (1995).

         (13)     Certificate of Incorporation of Columbia Power Marketing
                  Corporation dated June 19, 1997 filed herewith as Exhibit 3-A
                  and amendment changing name to Columbia Energy Power Marketing
                  Corporation dated March 2, 1998, filed herewith as Exhibit 4-A
                  to Form U5S (1997).

         (14)     By laws of Columbia Power Marketing Corporation as adopted
                  June 23, 1997 filed herewith as Exhibit 1-B to Form U5S
                  (1997).


57
<PAGE>   166
         (15)     Certificate of Incorporation of Columbia Service Partners,
                  Inc. dated March 21, 1996 file herewith as Exhibit 1-A to Form
                  U5S (1996).

         (16)     By laws of Columbia Service Partners, Inc. as adopted April
                  17, 1996 file herewith as Exhibit 2-B to Form U5S (1996).

         (17)     Certificate of Incorporation as amended, filed as Exhibit 2-A
                  to Form U5S (1970). Certificate of Merger of The Preston Oil
                  Company into Columbia Gas Development Corporation dated
                  January 13, 1970, filed as Exhibit 3-A to Form U5S (1970);
                  amendment dated May 18, 1972, filed as Exhibit 1-A to Form U5S
                  (1972); amendment dated June 26, 1972, filed as Exhibit 2-A to
                  Form U5S (1972); amendment dated October 11, 1972, filed as
                  Exhibit 3-A to Form U5S (1972); amendment dated January 16,
                  1973, filed as Exhibit 1-A to Form U5S (1973); amendment dated
                  February 20, 1974, filed as Exhibit 4-A to Form U5S (1974);
                  amendment dated May 20, 1975, filed as Exhibit 1-A to Form U5S
                  (1975). Certificate of Merger of Commonwealth Energy Company
                  into Columbia Gas Development Corporation dated November 19,
                  1981, filed as Exhibit 2-A to Form U5S (1981); amendment dated
                  October 24, 1983, filed as Exhibit 2-A to Form U5S (1983).

         (18)     By-Laws, as amended to January 13, 1970, filed as Exhibit 3-B
                  to Form U5S (1970); amendment dated August 14, 1973, filed as
                  Exhibit 1-B to Form U5S (1973); amendment dated September 13,
                  1983, filed as Exhibit 1-B to Form U5S (1983); amendment dated
                  May 16, 1986, filed as Exhibit 2-B to Form U5S (1986);
                  amendment dated December 1, 1988, filed as Exhibit 2-B to Form
                  U5S (1988).

         (19)     Articles of Incorporation, as amended to January 1, 1958,
                  filed as Exhibit 2-A to Form U5S (1957); amendment dated
                  December 21, 1981, filed as Exhibit 3-A to Form U5S (1981);
                  amendment dated November 15, 1988, filed as Exhibit 2-A to
                  Form U5S (1988); amendment dated March 13, 1995, filed as
                  Exhibit 2-A to Form U5S (1995); amendment dated February 15,
                  1995, filed as Exhibit 3-A to Form U5S (1995); amendment dated
                  January 12, 1996, filed as Exhibit 4-A to Form U5S (1995).

         (20)     By-Laws, as amended to September 1, 1968, filed as Exhibit 4-B
                  to Form U5S (1968); amendment dated June 16, 1970, filed as
                  Exhibit 4-B to Form U5S (1970); amendment dated September 24,
                  1975, filed as Exhibit 1-B to Form U5S (1975); amendment dated
                  May 4, 1977, filed as Exhibit 3-B to Form U5S (1977);
                  amendment dated May 1, 1985, filed as Exhibit 2-B to Form U5S
                  (1985); amendment dated December 8, 1988, filed as Exhibit 3-B
                  to Form U5S (1988); amendment dated June 15, 1989, filed as
                  Exhibit 1-B to Form U5S (1989); amendment dated January 9,
                  1996 filed as Exhibit 2-B to Form U5S (1995); amendment dated
                  November 1, 1997, filed herewith as Exhibit 2-B to Form U5S
                  (1997).

         (21)     Certificate of Incorporation as adopted July 1, 1958, filed as
                  Exhibit 1-A to Form U5S (1961); amendment dated January 17,
                  1980, filed as Exhibit 1-A to Form U5S (1979); amendment dated
                  February 15, 1995 filed as Exhibit 5A to Form U5S (1995).

         (22)     By-Laws, as amended to May 2, 1972, filed as Exhibit 4-B to
                  Form U5S (1972); amendment dated May 1, 1985, filed as Exhibit
                  3-B to Form U5S (1985); amendment dated December 8, 1988,
                  filed as Exhibit 4-B to Form U5S (1988); amendment dated June
                  15, 1989, filed as Exhibit 2-B to Form U5S (1989); amendment
                  dated January 9, 1996 filed as Exhibit 3-B to Form U5S (1995);
                  amendment dated June 30, 1997, to be filed later
                  electronically as Exhibit 3-B and amendment dated November 1,
                  1997, filed herewith as Exhibit 4-B to Form U5S (1997).
                  

58
<PAGE>   167
         (23)     Articles of Incorporation as adopted October 6, 1961, filed as
                  Exhibit 1-A to Form U5S (1964); amendment dated December 27,
                  1963, filed as Exhibit 2-A to Form U5S (1964); amendment dated
                  February 21, 1964, filed as Exhibit 3-A to Form U5S (1964);
                  Certificate of Merger of Columbia Gas of Ohio, Inc. and The
                  Ohio Valley Gas Company effective December 31, 1974, filed as
                  Exhibit 5-A to Form U5S (1974); amendment dated January 8,
                  1982, filed as Exhibit 2-A to Form U5S (1982); amendment dated
                  February 16, 1995, filed as exhibit 6-A to Form U5S (1995).

         (24)     Regulations as adopted October 16, 1961, filed as Exhibit 2-B
                  to Form U5S (1964); amendment dated August 19, 1968, filed as
                  Exhibit 5-B to Form U5S (1968); amendment dated May 1, 1985,
                  filed as Exhibit 5-B to Form U5S (1985); amendment dated
                  December 9, 1985, filed as Exhibit 6-B to Form U5S (1985);
                  amendment dated December 8, 1988, filed as Exhibit 6-B to Form
                  U5S (1988); amendment dated June 15, 1989, filed as Exhibit
                  4-B to Form U5S (1989); amendment dated January 9, 1996, filed
                  as Exhibit 4-B to Form U5S (1995); amendment dated November 1,
                  1997, filed herewith as Exhibit 5-B to Form U5S (1997).

         (25)     Articles of Incorporation as adopted during the year 1960,
                  filed as Exhibit 1-A to Form U5S (1962); amendment dated
                  December 21, 1981, filed as Exhibit 4-A to Form U5S (1981);
                  amendment dated February 15, 1995, filed as Exhibit 7-A to
                  Form U5S (1995).

         (26)     By-Laws, as amended to May 2, 1972, filed as Exhibit 6-B to
                  Form U5S (1972); amendment dated May 1, 1985, filed as Exhibit
                  7-B to Form U5S (1985); amendment dated December 8, 1988,
                  filed as Exhibit 7-B to Form U5S (1988); amendment dated June
                  15, 1989, filed as Exhibit 5-B to Form U5S (1989); amendment
                  dated January 9, 1996, filed as Exhibit 5-B to Form U5S
                  (1995); amendment dated November 1, 1997, filed herewith as
                  Exhibit 6-B to Form U5S (1997).

         (27)     Certificate of Incorporation, as amended through May 17, 1991,
                  filed as Exhibit 3-A to Form U5S (1991); amendment dated June
                  30, 1997, filed herewith to be filed later electronically
                  as Exhibit 5-A to Form U5S (1997).

         (28)     By-Laws, as amended February 10, 1988, filed as Exhibit 8-B to
                  Form U5S (1988); amendment dated December 29, 1997, filed
                  herewith as Exhibit 7-B to Form U5S (1997).

         (29)     Restated Certificate of Incorporation of Columbia Gas
                  Transmission Corporation dated March 3, 1982, filed as Exhibit
                  3-A to Form U5S (1982); amendment dated October 22, 1984,
                  filed as Exhibit 3-A to Form U5S (1984); Certificate of Merger
                  of Commonwealth Gas Pipeline Corp. into Columbia Gas
                  Transmission Corp. dated October 26, 1990, filed as Exhibit
                  1-A to Form U5S (1990); amendment dated November 28, 1995,
                  to be filed later electronically as Exhibit 6-A and
                  amendment dated June 30, 1997,
                  filed herewith as Exhibit 7-A to Form U5S (1997).

         (30)     By-Laws of Columbia Gas Transmission Corporation as amended
                  through May 9, 1991, filed as Exhibit 1-B to Form U5S (1991);
                  amendment dated January 17, 1996, file herewith as Exhibit 3-B
                  to Form U5S (1996).

         (31)     Certificate of Incorporation as adopted March 18, 1992, filed
                  as Exhibit 4-A to Form U5S (1991).

         (32)     By-Laws as of March 18, 1992, filed as Exhibit 4-B to Form U5S
                  (1991).

         (33)     Certificate of Incorporation as adopted May 26, 1958, filed as
                  Exhibit 3-A to Form U5S (1958); amendment dated November 10,
                  1981, filed as Exhibit 6-A to Form U5S (1981); amendment dated
                  December 23, 1994, filed as Exhibit 2-A to Form U5S (1994);
                  amendment dated June 30,


59
<PAGE>   168
                  1997, to be filed later electronically  
                  as Exhibit 8-A to Form U5S (1997).

         (34)     By-Laws of Columbia Gulf Transmission Company as amended
                  through May 9, 1991, filed as Exhibit 2-B to Form U5S
                  (1991);amendment dated January 17, 1996, file herewith as
                  Exhibit 4B to Form U5S (1996).

         (35)     Certificate of Incorporation of Columbia Insurance
                  Corporation, Ltd. dated November 1, 1996, filed herewith as
                  Exhibit 2-A to Form U5S (1996).

         (36)     By-laws of Columbia Insurance Corporation, Ltd. as adopted
                  November 4, 1996, file herewith as Exhibit 5-B to Form U5S
                  (1996).

         (37)     Restated Certificate of Incorporation of Columbia LNG
                  Corporation as amended to December 18, 1989, filed as Exhibit
                  18-A to Form U5S (1989); amendments dated January 31, 1992,
                  November 2, 1992, June 13, 1994 and April 13, 1995 filed as
                  Exhibits 3-A-1, 3-A-2, 3-A-3 and 3-A-4, respectively to Form
                  U5S; amendment dated January 15, 1997, 
                  to be filed later electronically  as
                  Exhibit 9-A to Form U5S (1997).

         (38)     By-Laws of Columbia LNG Corporation as amended through October
                  10, 1990, filed as Exhibit 1-B to Form U5S (1990); amendment
                  dated July 27, 1992, filed as Exhibit 3-B to Form U5S (1992);
                  amendment dated December 21, 1994 filed as Exhibit 1-B to Form
                  U5S (1994); amendment dated October 17, 1995 and amendment
                  dated June 1, 1996, filed herewith as Exhibits 6B and 7B to
                  Form U5S (1996).

         (39)     Certificate of Incorporation of CLNG Corporation as adopted
                  January 21, 1994, filed as Exhibit 4-A to Form U5S (1994).

         (40)     By-Laws of CLNG Corporation as amended through December 21,
                  1994 filed as Exhibit -B to Form U5S (1994).

         (41)     Certificate of Incorporation of Columbia Natural Resources,
                  Inc. adopted on November 21, 1984, filed as Exhibit 4-A to
                  Form U5S (1984).

         (42)     By-Laws as of November 26, 1984, filed as Exhibit 2-B to Form
                  U5S (1984).

         (43)     Amended and Restated Certificate of Incorporation of Alamco,
                  Inc. dated August 7, 1997, to be filed later electronically
                  as exhibit 10-A to
                  Form U5S (1997).

         (44)     Amended and Restated Bylaws of Alamco, Inc. as adopted August
                  7, 1997, to be filed later electronically as Exhibit 8-B to
                  Form U5S (1997).

         (45)     Certificate of Incorporation of Alamco-Delaware dated July 21,
                  1994, filed herewith as Exhibit 11-A to Form USS (1997),
                  to be filed later electronically.
                  

         (46)     By-Laws of Alamco-Delaware (to be filed).

         (47)     Certificate of Incorporation of Hawg Hauling & Disposal, Inc.
                  dated March 17, 1993, filed herewith as Exhibit 12-A to Form
                  U5S (1997), to be filed later electronically.

         (48)     By-Laws of Hawg Hauling & Disposal, Inc. dated March 17, 1993,
                  to be filed later electronically as Exhibit 10-B to
                  Form USS (1997).


60

<PAGE>   169
         (49)     Certificate of Incorporation of Columbia Network Services
                  Corporation dated June 7, 1996, filed herewith as Exhibit 3-A
                  Form U5S (1996).

         (50)     By-Laws of Columbia Network Services Corporation as adopted
                  August 29, 1996, filed herewith as Exhibit 8-B to Form U5S
                  (1996).

         (51)     Certificate of Incorporation of CNS Microwave Inc., dated
                  October 15, 1996, filed herewith as Exhibit -A to Form U5S
                  (1996).

         (52)     By-Laws of CNS Microwave, Inc. as adopted October 25, 1996,
                  filed herewith as Exhibit 9-B to Form U5S (1996).

         (53)     Certificate Formation of EnergyNet, L.L.C., dated June 13,
                  1997, to be filed later electronically as Exhibit 13-A to
                  Form U5S (1997).

         (54)     By-Laws of EnergyNet, L.L.C., dated June 13, 1997, filed
                  herewith as Exhibit 9-B to Form U5S (1997).

         (55)     Certificate of Incorporation as adopted August 19, 1957, filed
                  as Exhibit 3-A to Form U5S (1959); amendment dated December
                  18, 1989, filed as Exhibit 1-A to Form U5S (1989); Certificate
                  of Merger of CPI with and into CPC dated October 1, 1997,
                  filed herewith as Exhibit 14-A and amendment dated October 1,
                  1997, filed herewith as Exhibit 15-A to Form U5S (1997).

         (56)     By-Laws, as amended to December 4, 1957, filed as Exhibit 4-B
                  to Form U5S (1959); amendment dated May 31, 1966, filed as
                  Exhibit 2-B to Form U5S (1966); amendment dated August 3,
                  1967, filed as Exhibit 4-B to Form U5S (1967); amendment dated
                  October 3, 1968, filed as Exhibit 6-B to Form U5S (1968);
                  amendment dated February 4, 1971, filed as Exhibit 4-B to Form
                  U5S (1971); amendment dated March 11, 1981, filed as Exhibit
                  2-B to Form U5S (1981); amendment dated June 14, 1989, filed
                  as Exhibit 8-B to Form U5S (1989); amendment dated October 1,
                  1997, filed as Exhibit 12-B to Form U5S (1997).

         (57)     Certificate of Incorporation of Commonwealth Gas Services,
                  Inc. as amended through December 19, 1958, and including the
                  Certificate of Merger dated December 18, 1979, filed as
                  Exhibit 8-A to Form U5S (1981); amendment dated December 30,
                  1987, filed as Exhibit B, page 17, to Form U5S (1987);
                  amendment dated February 15, 1995, filed as Exhibit 8-A to
                  Form U5S (1995); amendment dated January 16, 1998, to be 
                  filed later electronically as 
                  Exhibit 16-A to Form U5S (1997).

         (58)     By-Laws of Commonwealth Gas Services, Inc. as amended through
                  March 5, 1985, filed as Exhibit 9-B to Form U5S (1985);
                  amendment dated April 21, 1986, filed as Exhibit 6-B to Form
                  U5S (1986); amendment dated April 20, 1987, filed as Exhibit
                  B, page 18, to Form U5S (1987); amendment dated January 1,
                  1989, filed as Exhibit 9-B to Form U5S (1988); amendment dated
                  June 15, 1989, filed as Exhibit 9-B to Form U5S (1989);
                  amendment dated May 6, 1991, filed as Exhibit 3-B to Form U5S
                  (1991); amendment dated December 7, 1992, filed as Exhibit 2-B
                  to Form U5S (1992);amendment dated November 1, 1997, filed
                  herewith as Exhibit 13-B to Form U5S (1997).

         (59)     Certificate of Incorporation of Commonwealth Propane, Inc. as
                  amended through October 3, 1981, and including the Certificate
                  of Merger dated December 31, 1980, filed as Exhibit 9-A to
                  Form U5S (1981); amendments dated July 1, 1988, filed as
                  Exhibits 5-A and 6-A to Form U5S (1988); amendment dated
                  January 6, 1989, filed as Exhibit 7-A to Form U5S


61
<PAGE>   170
                  (1988).

         (60)     By-Laws of Commonwealth Propane, Inc. as amended through July
                  16, 1990, filed as Exhibit 2-B to Form U5S (1990).

         (61)     Articles of Incorporation as adopted June 3, 1960, filed as
                  Exhibit 3-A to Form U5S (1965).

         (62)     By-Laws of Inland Gas Company, Inc. as amended through May 8,
                  1990, filed as Exhibit 3-B to Form U5S (1990).

         (63)     Certificate of Incorporation of TriStar Capital Corporation
                  dated August 2, 1990, filed as Exhibit 2-A to Form U5S (1990);
                  amendment dated June 30, 1997, filed herewith as Exhibit 17-A
                  to Form U5S (1997).

         (64)     By-Laws of TriStar Capital Corporation dated August 2, 1990,
                  filed as Exhibit 4-B to Form U5S (1990).

         (65)     Certificate of Incorporation of TriStar Gas Technologies, Inc.
                  dated August 2, 1990, filed as Exhibit 3-A to Form U5S (1990).

         (66)     By-Laws of TriStar Gas Technologies, Inc. dated August 2,
                  1990, filed as Exhibit 5-B to Form U5S (1990).

         (67)     Certificate of Incorporation of TriStar Trading Inc. dated
                  April 27, 1990, filed as Exhibit 4-A to Form U5S (1990).

         (68)     By-Laws of TriStar Trading Inc. dated April 27, 1990, filed as
                  Exhibit 6-B to Form U5S (1990).

         (69)     Restated Certificate of Incorporation of TriStar Ventures
                  Corporation as of July 22, 1986, filed as Exhibit 2-A to Form
                  U5S (1986); amendment dated June 1, 1997, to be filed later
                  electronically 
                  dated January 16, 1998, filed
                  herewith as Exhibit 19-A to form U5S (1997).

         (70)     By-Laws as of March 22, 1984, filed as Exhibit 1-B to Form U5S
                  (1984); amended to change the name from Columbia Gas Brokerage
                  Corporation to TriStar Ventures Corporation by the Consent to
                  Action in Lieu of a Special Meeting of the Board of Directors
                  dated July 11, 1986, filed as Exhibit 10-B to Form U5S (1986).

         (71)     Certificate of Incorporation of TriStar CPA Corporation dated
                  April 29, 1988, filed as Exhibit 2-A to Form U5S (1989);
                  amendment changing name to TriStar Pedrick General
                  Corporation, dated August 2, 1989, filed as Exhibit 3-A to
                  Form U5S (1989).

         (72)     By-Laws of TriStar CPA Corporation (name later changed to
                  TriStar Pedrick General Corporation) dated April 29, 1988,
                  filed as Exhibit 14-B to Form U5S (1989).

         (73)     Certificate of Incorporation of TriStar Rumford Corporation
                  dated April 29, 1988, filed as Exhibit 4-A to Form U5S (1989);
                  amendment changing name to TriStar Pedrick Limited
                  Corporation, dated August 2, 1989, filed as Exhibit 5-A to
                  Form U5S (1989).

         (74)     By-Laws of TriStar Rumford Corporation (name later changed to
                  TriStar Pedrick Limited Corporation) dated April 29, 1988,
                  filed as Exhibit 15-B to Form U5S (1989).


62
<PAGE>   171
         (75)     Certificate of Incorporation of TVC One Corporation dated
                  December 28, 1989, filed as Exhibit 6-A to Form U5S (1989);
                  amendment changing name to TriStar Fuel Cells Corporation,
                  dated May 8, 1990, filed as Exhibit 5-A to Form U5S (1990).

         (76)     By-Laws of TVC One Corporation (name later changed to TriStar
                  Fuel Cells Corporation) dated December 28, 1989, filed as
                  Exhibit 16-B to Form U5S (1989).

         (77)     Certificate of Incorporation of TVC Two Corporation dated
                  December 28, 1989, filed as Exhibit 7-A to Form U5S (1989);
                  amendment changing name to TriStar Binghamton General
                  Corporation, dated May 8, 1990, filed as Exhibit 6-A to Form
                  U5S (1990).

         (78)     By-Laws of TVC Two Corporation (name later changed to TriStar
                  Binghamton General Corporation) dated December 28, 1989, filed
                  as Exhibit 17-B to Form U5S (1989).

         (79)     Certificate of Incorporation of TVC Three Corporation dated
                  December 28, 1989, filed as Exhibit 8-A to Form U5S (1989);
                  amendment changing name to TriStar Binghamton Limited
                  Corporation, dated May 8, 1990, filed as Exhibit 7-A to Form
                  U5S (1990).

         (80)     By-Laws of TVC Three Corporation (name later changed to
                  TriStar Binghamton Limited Corporation) dated December 28,
                  1989, filed as Exhibit 18-B to Form U5S (1989).

         (81)     Certificate of Incorporation of TVC Four Corporation dated
                  December 28, 1989, filed as Exhibit 9-A to Form U5S (1989);
                  amendment changing name to TriStar Georgetown General
                  Corporation, dated May 8, 1990, filed as Exhibit 8-A to Form
                  U5S (1990).

         (82)     By-Laws of TVC Four Corporation (name later changed to TriStar
                  Georgetown General Corporation) dated December 28, 1989, filed
                  as Exhibit 19-B to Form U5S (1989).

         (83)     Certificate of Incorporation of TVC Five Corporation dated
                  December 28, 1989, filed as Exhibit 10-A to Form U5S (1989);
                  amendment changing name to TriStar Georgetown Limited
                  Corporation, dated May 1990, filed as Exhibit 9-A to Form U5S
                  (1990).

         (84)     By-Laws of TVC Five Corporation (name later changed to TriStar
                  Georgetown Limited Corporation) dated December 28, 1989, filed
                  as Exhibit 20-B to Form U5S (1989).

         (85)     Certificate of Incorporation of TVC Six Corporation dated
                  December 28, 1989, filed as Exhibit 11-A to Form U5S (1989);
                  amendment changing name to TriStar Vineland General
                  Corporation, dated May 8, 1990, filed as Exhibit 10-A to Form
                  U5S (1990).

         (86)     By-Laws of TVC Six Corporation (name later changed to TriStar
                  Vineland General Corporation) dated December 28, 1989, filed
                  as Exhibit 21-B to Form U5S (1989).

         (87)     Certificate of Incorporation of TVC Seven Corporation dated
                  December 28, 1989, filed as Exhibit 12-A to Form U5S (1989);
                  amendment changing name to TriStar Vineland Limited
                  Corporation, dated May 8, 1990, filed as Exhibit 11-A to Form
                  U5S (1990).

         (88)     By-Laws of TVC Seven Corporation (name later changed to
                  TriStar Vineland Limited Corporation) dated December 28, 1989,
                  filed as Exhibit 22-B to Form U5S (1989).


63
<PAGE>   172
         (89)     Certificate of Incorporation of TVC Eight Corporation dated
                  December 28, 1989, filed as Exhibit 13-A to Form U5S (1989);
                  amendment changing name to TriStar Rumford Limited
                  Corporation, dated September 26, 1990, filed as Exhibit 12-A
                  to Form U5S (1990).

         (90)     By-Laws of TVC Eight Corporation (name later changed to
                  TriStar Rumford Limited Corporation) dated December 28, 1989,
                  filed as Exhibit 23-B to Form U5S (1989).

         (91)     Certificate of Incorporation of TVC Nine Corporation dated
                  December 28, 1989, filed as Exhibit 14-A to Form U5S (1989).

         (92)     By-Laws of TVC Nine Corporation dated December 28, 1989, filed
                  as Exhibit 24-B to Form U5S (1989).

         (93)     Certificate of Incorporation of TVC Ten Corporation dated
                  December 28, 1989, filed as Exhibit 15-A to Form U5S (1989).

         (94)     By-Laws of TVC Ten Corporation dated December 28, 1989, filed
                  as Exhibit 25-B to Form U5S (1989).


64
<PAGE>   173
         EXHIBIT C

(a)      *Reference is made to Columbia Energy Group's 1997 Form 10- K, pages 73
         through 75, filed with the Commission on March 18, 1998 (File No.
         1-1098), for the indentures and other fundamental documents defining
         the rights of security holders.

         *Incorporated herein by reference.


65
<PAGE>   174
EXHIBIT D

         A copy of the System Tax Allocation Agreement (Agreement) is filed
         herewith as Exhibit D to Form U5S (1997).


66
<PAGE>   175
EXHIBIT E

         Copies of other documents prescribed by rule or order.

         The Registrant's Chart of Accounts was filed on November 24, 1975, as
         Amendment No. 1 to Form U5S (1974), modified by Amendment No. 1 to Form
         U5S (1980), filed on July 10, 1981, and by Amendment No. 1 to Form U5S
         (1981), filed on September 24, 1982. No changes, other than those
         required by the Federal Energy Regulatory Commission, occurred during
         the year 1996.

         Columbia's personnel policy of general application, permitting retirees
         to secure subsidiary contingent tax liabilities relating to Pension
         Restoration Plan distributions, effective as of December 1, 1993, filed
         as Exhibit E to Form U5S (1993), is incorporated herein by reference.


67
<PAGE>   176
EXHIBIT F

                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS

TO COLUMBIA ENERGY GROUP:

We have audited the accompanying consolidated balance sheets of Columbia Energy
Group (a Delaware corporation, the "Corporation") and subsidiaries as of
December 31, 1997 and 1996, and the related statements of consolidated income,
cash flows and common stock equity for each of the three years in period ended
December 31, 1997. These financial statements are the responsibility of the
Corporation's management. Our responsibility is to express an opinion on these
financial statements based on our audit.

We conducted our audit in accordance with generally accepted auditing standards.
Those standards require that we plan and perform the audit to obtain reasonable
assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audit provides a reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in
all material respects, the financial position of the Corporation and
subsidiaries as of December 31, 1997 and 1996, and the results of their
operations and their cash flows for the year then ended in conformity with
generally accepted accounting principles.

Our audits were made for the purposes of forming an opinion on the basic
consolidated financial statements taken as a whole. The schedule listed in the
Index to Item 8, Financial Statements and Supplementary Data, is presented for
purposes of complying with the Securities and Exchange Commission's rules and is
not part of the basic consolidated financial statements. This schedule has been
subjected to the auditing procedures applied in the audits of the basic
consolidated financial statements and, in our opinion, fairly states in all
material respects the financial data required to be set forth therein in
relation to the basic consolidated financial statements taken as a whole.

ARTHUR ANDERSEN LLP.

New York, New York
January 23, 1998


68
<PAGE>   177
EXHIBIT G

         Financial Data Tables are filed herewith as Exhibit 27.


69
<PAGE>   178
                                    EXHIBIT H

                                 Not Applicable


70
<PAGE>   179
                                    EXHIBIT I

                                 Not Applicable


71
<PAGE>   180
                              COLUMBIA ENERGY GROUP
                             FORM U5S ANNUAL REPORT
                      FOR THE YEAR ENDED DECEMBER 31, 1997

                                    EXHIBITS


Exhibit 1-A:      Certificate of Amendment of Certificate of Incorporation of
                  Columbia Energy Group dated January 16, 1998.

Exhibit 2-A:      Certificate of Amendment of Certificate of Incorporation of
                  Columbia Atlantic Trading Corporation dated August 18, 1997.

Exhibit 3-A:      Certificate of Incorporation of Columbia Power Marketing
                  Corporation dated June 19, 1997.

Exhibit 4-A:      Certificate of Amendment of Certificate of Incorporation of
                  Columbia Power Marketing Corporation dated March 2, 1998.

Exhibit 1-B:      By-Laws of Columbia Power Marketing Corporation dated June
                  23, 1997.

Exhibit 2-B:      Amendment of the By-Laws of Columbia Gas of Kentucky adopted
                  November 1, 1997.

Exhibit 3-B:      Amendment of the By-Laws of Columbia Gas of Maryland, Inc.
                  as adopted June 30, 1997.

Exhibit 4-B:      Amendment of the By-Laws of Columbia Gas of Maryland, Inc.
                  as adopted November 1, 1997.

Exhibit 5-B:      Amendment of the By-Laws of Columbia Gas of Ohio, Inc. as
                  adopted November 1, 1997.

Exhibit 6-B:      Amendment of the By-Laws of Columbia Gas of Pennsylvania,
                  Inc. as adopted November 1, 1997.

Exhibit 5-A:      Certificate of Amendment of Restated Certificate of
                  Incorporation of Columbia Gas System Service Corporation dated
                  June 30, 1997.

Exhibit 7-B:      Amendment of the By-Laws of Columbia Energy Group Service
                  Corporation as adopted December 29, 1997.

Exhibit 6-A:      Amended and Restated Certificate of Incorporation of
                  Columbia Gas Transmission Corporation dated November 28, 1995.
<PAGE>   181
Exhibit 7-A:      Certificate of Amendment of Restated Certificate of
                  Incorporation of Columbia Gas Transmission Corporation dated
                  June 30, 1997.

Exhibit 8-A:      Certificate of Amendment of Certificate of Incorporation of
                  Columbia Gulf Transmission Company dated June 30, 1997.

Exhibit 9-A:      Certificate of Amendment of Certificate of Incorporation
                  CLNG Corporation dated January 15, 1997.

Exhibit 10-A:     Amended and Restated Certificate of Incorporation of
                  ALAMCO, Inc. dated August 7, 1997.

Exhibit 8-B:      Amended and Restated By-Laws of ALAMCO, Inc. as adopted
                  August 7, 1997.

Exhibit 11-A:     Certificate of Incorporation of Alamco-Delaware dated July
                  21, 1994.

Exhibit 9-B:      By-Laws of Alamco-Delaware to be filed at a later date.

Exhibit 12-A:     Certificate of Incorporation of Hawg-Hauling & Disposal,
                  Inc. dated March 17, 1993.

Exhibit 10-B:     By-Laws of Hawg-Hauling & Disposal, Inc. dated March 12,
                  1993.

Exhibit 13-A:     Certificate of Formation of EnergyNet, L.L.C. dated June
                  13, 1997.

Exhibit 11-B:     By-Laws of EnergyNet, L.C.C. dated June 13, 1997.

Exhibit 14-A:     Certificate of Merger of Commonwealth Propane, Inc., a
                  Virginia Corporation, with and into Columbia Propane
                  Corporation, A Delaware Corporation dated October 1, 1997.

Exhibit 15-A      Restated Certificate of Incorporation of Columbia Propane
                  Corporation dated October 1, 1997.

Exhibit 12-B:     Restated By-Laws of Columbia Propane Corporation as adopted
                  October 1, 1997.

Exhibit 16-A      Amendment of the By-Laws of Commonwealth Gas Services, Inc.
                  as adopted January 16, 1998.

Exhibit 13-B      Amendment of the By-Laws of Commonwealth Gas Services, Inc.
                  dated November 1, 1997.

Exhibit 17-A:     Certificate of Amendment of Certificate of Incorporation of
                  Tristar Capital Corporation dated June 30, 1997.
<PAGE>   182
Exhibit 18-A:     Certificate of Amendment of Restated Certificate of
                  Incorporation of Tristar Ventures Corporation dated June 1,
                  1997.

Exhibit 19-A:     Certificate of Amendment of Restated Certificate of
                  Incorporation of Tristar Ventures Corporation dated January
                  16, 1998.

Exhibit D:        Tax Allocation dated 1997.

Exhibit 27:       Financial Data Tables

<PAGE>   1
                            CERTIFICATE OF AMENDMENT
                                       OF                            Exhibit 3-B
                          CERTIFICATE OF INCORPORATION               Page 1 of 3
                                       OF
                         COLUMBIA GAS OF MARYLAND, INC.






        COLUMBIA GAS OF MARYLAND, INC., a corporation organized and existing
under and by virtue of the General Corporation Law of the State of Delaware (the
"Corporation"),

         DOES HEREBY CERTIFY:

         FIRST: That the Board of Directors of said Corporation, by unanimous
written consent dated June 30, 1997, adopted resolutions proposing and declaring
advisable an amendment to part FOURTH of the Certificate of Incorporation of
said Corporation as follows:

               RESOLVED, that the Board of Directors finds advisable and hereby
        proposes to the stockholders of the Corporation that part FOURTH of the
        Certificate of Incorporation of the Corporation be amended in its
        entirety to read as follows:

                FOURTH: The total number of shares of stock which the
                Corporation shall have authority to issue is Three Thousand 
                (3,000) and the par value of each of such shares is Twenty-Five
                Dollars ($25.00) amounting in the aggregate to Seventy Five
                Thousand Dollars ($75,000).

               RESOLVED, FURTHER, that effective at the time of the filing of
        the Certificate of Amendment setting forth this amendment to the
        Certificate of Incorporation (the "Effective Time"), each share of the
        common stock of the Corporation, par value $25.00 per share, issued and
        outstanding or held in treasury immediately prior to the Effective Time
        shall, without the exchange of stock certificates or the taking of any
        other action on the part of the Corporation or the respective holders
        thereof, be reclassified into one one hundred fortieth (1/140) of a
        share of common stock of the Corporation, par value $25.00 per share,
        and each stock certificate that, immediately prior to the Effective
        Time, represented shares of such common stock shall, from and after the
        Effective Time, and without the necessity of presenting the same for
        exchange, represent one one hundred fortieth (1/140) of the number of
        shares designated on such stock certificate, provided, however, that
        after the Effective Time, upon the surrender by any stockholder of
        certificates
<PAGE>   2
         bearing the number of shares of the Corporation's common stock
         represented by such certificate prior to the Effective Time, the
         officers of the corporation be, and they hereby are, authorized and
         directed to issue in exchange therefor one or more new certificates
         bearing the number of reclassified shares of the Corporation's common
         stock;

                  RESOLVED, FURTHER, that the foregoing amendment is advisable
         and its adoption is in the best interests of the Corporation and its
         stockholders and, to effectuate the foregoing, it is hereby directed
         that the foregoing amendment be considered at the next annual meeting
         of the stockholders, unless earlier approved by written consent in
         accordance with Section 228 of the Delaware General Corporation Law;

                  RESOLVED, FURTHER, that after approval of such amendment by
         the stockholders of the Corporation and receipt of all necessary
         regulatory approvals, the officers of the Corporation be, and they
         hereby are, authorized and directed to execute, acknowledge and file
         with the Secretary of State of the State of Delaware a Certificate of
         Amendment to evidence the foregoing amendment to the Corporation's
         Certificate of Incorporation; and

                  RESOLVED, FURTHER, that the officers of the Corporation be,
         and they hereby are, authorized and directed from time to time to
         execute any and all documents and to take any and all other actions
         necessary or appropriate to carry forward the foregoing resolutions.

        SECOND: That in lieu of a meeting and vote of the stockholders, The
Columbia Gas system, Inc., being the holder of the outstanding stock of the
Corporation having not less than the minimum number of votes that would be
necessary to authorize or take action at a meeting at which all shares entitled
to vote thereon were present and voted, approved said amendment by written
Consent dated as of August 1, 1997, in accordance with the provisions of
Section 228(a) of the General Corporation Law of the State of Delaware.

        THIRD: That said amendment was duly adopted in accordance with the
applicable provisions of Sections 242 and 228 of the General Corporation Law of
the State of Delaware.
<PAGE>   3
                                                                    Exhibits 3-B
                                                                    Page 3 Of 3

         IN WITNESS WHEREOF, Columbia Gas of Maryland, Inc. has caused this
Certificate to be signed by Mr. Gary J. Robinson, its President, and attested by
Mr. Andrew J. Sonderman, its Secretary, this 12th day of August, 1997.



                                                   By:  /s/ Gary J. Robinson
                                                      --------------------------
                                                                 President


ATTEST:  /s/ Andrew J. Sonderman
       --------------------------
                Secretary

<PAGE>   1
                             Exhibit 6-A               STATE OF DELAWARE 
                             Page 1 of 11             SECRETARY OF STATE
                                                   DIVISION OF CORPORATIONS
                                                   FILED 08:30 AM 11/28/1995
                                                      950274205 - 704607



                AMENDED AND RESTATED CERTIFICATE OF INCORPORATION

                                       OF

         COLUMBIA GAS TRANSMISSION CORPORATION, a corporation organized and
existing under the laws of the State of Delaware, hereby certifies as follows:

         1.       The name of the corporation is COLUMBIA GAS TRANSMISSION
CORPORATION. The date of filing its original Certificate of Incorporation with
the Secretary of State was March 3, 1969.

         2.       This is an amendment to the Restated Certificate of
Incorporation which was filed in the Office of the Secretary of State for the
State of Delaware on March 19, 1982. The effect of this Amendment is to add a
new Paragraph 9 as follows:

         "NINTH: No non-voting equity securities of the Corporation may be
issued. This provision is to comply with Section 1123 of the United States
Bankruptcy Code, 11 U.S.C. Section 1123(a)(5)(I), and Section 1123 (a)(6)
shall have no force and effect except to the extent required by such Section so
long as such Section is in effect and applicable to the Corporation".

         3.       The text of the Certificate of Incorporation as amended is
hereby restated without further amendments or changes to read as herein set
forth in full:
<PAGE>   2
                                  Exhibit 6-A
                                  Page 2 of 11




         FIRST. The name of the Corporation is COLUMBIA GAS TRANSMISSION
         CORPORATION

         SECOND. The address of its registered office in the State of Delaware
is No. 1209 Orange Street, in the City of Wilmington, County of New Castle. The
name of its registered agent at such address is The Corporation Trust Company.

         THIRD. The nature of the business or purposes to be conducted or
promoted are:

                  (a)      To prospect, explore and drill for, or otherwise
         acquire, import, export, produce, mine, gather, store, treat, refine,
         reform, blend, combine, manufacture, strip, purchase, transmit,
         transport, sell or otherwise dispose of, furnish and deliver natural,
         artificial and mixed gas, oil and other hydrocarbons including
         gasoline, and sulphur and other minerals and mineral substances either
         gaseous, liquid or solid, together with all derivatives, products or
         by-products thereof;

                  (b)      To construct, purchase, lease or otherwise acquire,
         own, operate, maintain, sell or otherwise dispose of pipelines and
         underground storage areas or facilities for the transmission, purchase,
         production, storage or sale of natural, artificial or mixed gas,
         together with such machinery, plants, appliances, supplies and other
         equipment and property used, useful or convenient to the operation and
         maintenance of said pipelines, and underground storage areas or
         facilities:

                  (c)      To construct, purchase, lease or otherwise acquire,
         own, operate, maintain, sell or otherwise dispose of, a system or
         systems of communications by radio, telephone, telegraph or otherwise,
         together with such machinery, plants, appliances, supplies and other
         equipment and property used, useful or
<PAGE>   3
                                   Exhibit 6-A
                                   Page 3 of 11






         convenient to the operation and maintenance of such systems, for use
         only in connection with the business of the Corporation and not as
         common carrier or public utility;

                  (d)      To manufacture, purchase, use, sell, lease and deal
         in machines and inventions consuming or utilizing gas, oil or vapor as
         a fuel, as light and/or heat, or other energy application, or as a raw
         material or other component in any manufacturing or corresponding
         process;

                  (e)      To manufacture, purchase or otherwise acquire, lease,
         invest in, own, mortgage, pledge, sell, assign and transfer or
         otherwise dispose of, trade, deal in and deal with goods, wares and
         merchandise and personal property of every class and description;

                  (f)      To purchase, receive, take by grant, gift, devise,
         bequest or otherwise, lease, or otherwise acquire, own, hold, improve,
         employ, use and otherwise deal in and with real or personal property,
         either tangible or intangible, or any interest therein, wherever
         situated, and to sell, convey, lease, exchange, transfer or otherwise
         dispose of, or mortgage or pledge, all or any or the corporation's
         property and assets, or any interest therein, wherever situated;

                  (g)      To exercise the power of eminent domain to the
         fullest extent permitted by Federal law or applicable State statutes
         for the purpose of acquiring such real or personal property and such
         casements, rights of way, licences or other interest in such real or
         personal property, as may be necessary or convenient in the
         construction and/or operation and maintenance of any property or
         facilities of the Corporation to which such Federal law or applicable
         State statutes apply;

                  (h)      To acquire, bring together, hold, dispose of and deal
         in, royalty and other interests in minerals and to manage and control
         said mineral interests and to collect the revenues arising therefrom:
<PAGE>   4
                                   Exhibit 6-A
                                   Page 4 of 11



                  (i)      To lend money for its corporate purposes. invest and
         reinvest its funds, and take. hold and deal with real and personal
         property as security for the payment of funds so loaned or invested;

                  (j)      To apply for, receive, acquire, hold, use, sell,
         assign, lease, grant licenses in respect of, mortgage or otherwise
         dispose of letters patent of the United States or any foreign country,
         patent rights, territorial rights, licenses, permits, certificates,
         privileges or other governmental authorization from any Federal, State,
         or local governmental agency, inventions, improvements and processes,
         copyrights, trademarks and trade names, that may be necessary,
         appropriate, or convenient for the carrying out of any of the business
         or purposes to be conducted or promoted by the corporation;

                  (k)      To enter into, make, perform, carry out and rescind
         contracts of every kind including contracts of guaranty and suretyship,
         as principal agent or otherwise, with any person, firm, association,
         corporation, government, state, municipality, or other governmental
         agency or political subdivision thereof or body politic, or colony or
         dependency thereof,

                  (l)      To borrow or raise moneys for any of the purposes of
         the corporation and, from time to time without limits as to amount, to
         draw, make, accept, endorse, execute and issue promissory notes,
         drafts, bills of exchange, warrants. bonds, debentures and other
         negotiable or non-negotiable instruments and evidences of indebtedness,
         and to secure the payment of any thereof and of the interest thereon by
         mortgage upon or pledge, conveyance or assignment in trust of the whole
         or any part of the property of the corporation, whether at the time
         owned or thereafter acquired, and to sell, pledge or otherwise dispose
         of such bonds or other obligations of the corporation for its
         corporate purposes;

                  (m)      To participate with others in any corporation,
         partnership, limited partnership, joint venture, or other association
         of any kind or in any transaction, undertaking or
<PAGE>   5
                                   Exhibit 6-A
                                   Page 5 of 11


         arrangement which the participating corporation would have power to
         conduct

         by itself, whether or not such participation involves sharing or
         delegation of control with or to others:

                  (n)      To carry on and conduct research work upon any and
         all problems arising in connection with the development of its
         properties for the purchase, production, storage and transportation of
         oil, gas, sulphur and other minerals and mineral substances either
         gaseous, liquid, or solid, and the refining and extraction therefrom
         and the refining of any product or byproduct or derivative thereof and
         any commercial use, or application of any such minerals or mineral
         substances or products, by-products, or derivatives thereof, or in
         connection with any of the other objects and purposes of the
         Corporation;

                  (o)      To conduct and carry on any of the objects and
         purposes herein enumerated through or by means of investment in
         subsidiaries or in the stock, securities, or other evidences of
         interest in corporations, joint stock companies, syndicates, firms,
         trusts, partnerships; or other associations of any kind engaged in
         carrying on or conducting any one or more of the businesses or
         enterprises which the Corporation is authorized to conduct and carry on
         hereunder;

                  (p)      To acquire by purchase, subscription or otherwise,
         and to receive, hold, own, guarantee, sell, assign, exchange, transfer,
         mortgage, pledge or otherwise dispose of or deal in and with any of the
         shares of the capital stock, or any voting trust certificates in
         respect of the shares of capital stock, scrip, warrants, rights, bonds,
         debentures, notes, trust receipts, and other securities, obligations,
         choses in action and evidences of indebtedness or interest issued or
         created by any corporations, joint stock companies, syndicates,
         associations, firms, trusts or persons, public or private, or by the
         government of the United States of America, or by any foreign
         government, or by any state, territory, province, municipality or other
         political subdivision or by any governmental agency, and as owner
         thereof
<PAGE>   6
                                   Exhibit 6-A
                                   Page 6 of 11






         to possess and exercise all the rights, powers and privileges of
         ownership, including the right to execute consents and vote thereon,
         and to do any and all acts and things necessary or advisable for the
         preservation, protection, improvement and enhancement in value thereof;

                  (q)      To purchase or otherwise acquire its own shares of
         stock and its bonds, debentures, notes, scrip or other securities or
         evidences of indebtedness, and to cancel or to hold, transfer or
         reissue the same to such persons, firms, corporations or associations
         and upon such terms and conditions as the Board of Directors may in its
         discretion determine, without offering any thereof on the same terms or
         on any terms to the stockholders then of record or to any class of
         stockholders;

                  (r)      To aid in any manner any corporation, joint stock
         company, syndicate, association or trust, domestic or foreign, or any
         firm, or individual, any shares of stock in which or any bonds,
         debentures, notes, securities, evidences of indebtedness, contracts or
         obligations of which are held by or for this Corporation, directly or
         indirectly, or in which, or in the welfare of which, this Corporation
         shall have any interest, and to do any acts designed to protect,
         preserve, improve or enhance the value of any property at any time held
         or controlled by this Corporation or in which it may be at any time
         interested, directly or indirectly, or through other corporations or
         otherwise; and to cause to be formed, merged, consolidated, or
         reorganized or liquidated and to promote, take charge of or aid in any
         way permitted by law, the formation, merger, consolidation,
         reorganization or liquidation of any corporation or entity in the
         United States or elsewhere;

                  (s)      To sue and be sued in all courts and participate, as
         a party, or otherwise. in any judicial, administrative, arbitrative or
         other proceeding, in its corporate name, and to delegate by power of
         attorney to any person or persons authority to commence, prosecute,
         defend, compromise or settle any claims, actions or suits in behalf of
         or against the Corporation, either at law or in equity or otherwise:
<PAGE>   7
                                   Exhibit 6-A
                                   Page 7 of 11






                  (t)      To issue its capital stock, bonds, debentures, or
         other obligations in payment for property purchased or acquired by it,
         or for money borrowed, or for any other lawful object in or about its
         business;

                  (u)      To acquire, and pay for in cash, stock or bonds of
         this Corporation or otherwise, the good will, rights, assets and
         property, and to undertake or assume the whole or any part of the
         obligations or liabilities of any person, firm, association or
         corporation:

                  (v)      To pay pensions and establish and carry out pension,
         profit sharing, stock option, stock purchase, stock bonus, retirement,
         benefit, incentive and compensation plans, trusts and provisions for
         any or all of its directors, officers, and employees, and for any or
         all of the directors, officers, or employees of its subsidiaries;

                  (w)      To provide insurance for its benefit on the life of
         any of its directors, officers, or employees, or on the life of any
         stockholder for the purpose of acquiring at his death shares of its
         stock owned by such stockholder.

                  (x)      In general, to possess and exercise all the powers
         and privileges granted by the General Corporation Law of Delaware or by
         any other law of Delaware or by this Certificate of Incorporation
         together with any powers incidental thereto, so far as such powers and
         privileges are necessary or convenient to the conduct, promotion or
         attainment of the business or purposes of the corporation.

         The business and purposes specified in the foregoing clauses shall,
except where otherwise expressed, be in nowise limited or restricted by
reference to, or inference from, the terms of any other clause in this
Certificate of Incorporation, but the business and purposes specified in each
of the foregoing clauses of this article shall be regarded as independent
business and purposes.

         FOURTH. The total number of shares of stock which the corporation shall
have authority to issue is fifteen million (15,000,000) and the par value of
<PAGE>   8
                                   Exhibit 6-A
                                   Page 8 of 11






each of such shares is Twenty-five Dollars ($25) amounting in the aggregate to
Three Hundred Million Dollars ($375,000,000).

         FIFTH. The Corporation is to have perpetual existence.

         SIXTH. For the management of the business and for the conduct of the
affairs of the Corporation, and in further definition, limitation and regulation
of the powers of the Corporation and of its directors and stockholders, it is
further provided:

         1.       The number of directors of the Corporation shall be such as
         from time to time shall be fixed by, or in the manner provided in, the
         By-laws, but in no case shall the number be less than three. The
         directors need not be stockholders.

         2.       In furtherance and not in limitation of the powers conferred
         by statute, the Board of Directors is expressly authorized:

                  (a)      To make, alter or repeal the By-laws of the
         Corporation subject to the power of the stockholders to alter or repeal
         the By-laws made by the Board of Directors.

                  (b)      Subject to the applicable provisions of the By-laws
         then in effect, to determine, from time to time, whether and to what
         extent and at what times and places and under what conditions and
         regulations the accounts and books and documents of the Corporation, or
         any of them, shall be opened to the inspection of the stockholders, and
         no stockholder shall have any right to inspect any account or book or
         document of the Corporation, except as conferred by statute, unless and
         until authorized so to do by resolution of the Board of Directors or of
         the stockholders of the Corporation.

                  (c)      To authorize and cause to be executed mortgages and
         liens upon the real and personal property of the corporation.

                  (d)      To determine whether any, and, if any, what part, of
         the net profits of the Corporation or of its surplus shall be
<PAGE>   9
                                   Exhibit 6-A
                                   Page 9 of 11







         declared in dividends and paid to the stockholders, and to direct and
         determine the use and disposition of any such net profits or such net
         assets in excess of capital.

                  (e)      To set apart out of any funds of the Corporation
         available for dividends a reserve or reserves for any property purpose
         and to abolish any such reserve or reserves, to make such other
         provisions, if any, as the Board of Directors may deem necessary or
         advisable for working capital, for additions, improvements and
         betterments to plant and equipment, for expansion of the business of
         the Corporation (including the acquisition of real and personal
         property for that purpose) and for any other purposes of the
         Corporation.


                  (f)      By resolution or resolutions passed by a majority of
         the whole board, to designate one or more committees, each committee to
         consist of two or more of the directors of the corporation. The board
         may designate one or more directors as alternate members of any
         committee, who may replace any absent or disqualified member at any
         meeting of the committee. Any such committee, to the extent provided
         in the resolution or in the by-laws of the corporation, shall have and
         may exercise the powers of the board of directors in the management of
         the business and affairs of the corporation, and may authorize the seal
         of the corporation to be affixed to all papers which may require it;
         provided, however, the by-laws may provide that in the absence or
         disqualification of any, member of such committee or committees, the
         member or members thereof present at any meeting and not disqualified
         from voting, whether or not he or they constitute a quorum, may
         unanimously appoint another member of the board of directors to act at
         the meeting in the place of any such absent or disqualified member.

                  (g)      When and as authorized by the affirmative vote of the
         holders of a majority of the stock issued and outstanding having voting
         power given at a stockholders' meeting duly called upon such notice as
         is required by statute, or when authorized by the written consent of
         the holders of a majority of the voting stock issued and outstanding,
         to sell, lease or exchange all or
<PAGE>   10
                                   Exhibit 6-A
                                   Page 10 of 11






         substantially all of the property and assets of the corporation,
         including its good will and its corporate franchises, upon such terms
         and conditions and for such consideration, which may consist in whole
         or in part of money or property including shares of stock in, and/or
         other securities of, any other corporation or corporations, as its
         board of directors shall deem expedient and for the best interests of
         the corporation.

                  (h)      The Corporation may in its By-laws confer powers upon
         its Board of Directors in addition to the foregoing, and in addition to
         the powers and authorities expressly conferred upon it by statute.

         SEVENTH. Meetings of stockholders may be held within or without the
State of Delaware, as the by-laws may provide. The books of the corporation may
be kept (subject to any provision contained in the statutes) outside the State
of Delaware at such place or places as may be designated from time to time by
the board of directors or in the by-laws of the corporation. Elections of
directors need not be by written ballot unless the by-laws of the corporation
shall so provide.

         EIGHTH. The Corporation reserves the right to amend, alter, change or
repeal any provision contained in this Certificate of Incorporation, in the
manner now or hereafter prescribed by statute, and all rights conferred upon
stockholders herein are granted subject to this reservation.

         NINTH. No non-voting equity securities of the Corporation may be
issued. This provision is to comply with Section 1123 of the United States
Bankruptcy Code, 11 U.S.C. Section 1123(a)(5)(1), and Section 1123(a)(6), shall
have no force and effect except to the extent required by such Section so long
as such Section is in effect and applicable to the Corporation.

4.       This Amended and Restated Certificate of Incorporation was duly adopted
by the board of directors in accordance with Section 245 of the General
Corporation Law of the State of Delaware and, pursuant to Section 303 of the
General Corporation Law of the State of Delaware, in accordance with the
Corporation's
<PAGE>   11
                                   Exhibit 6-A
                                   Page 11 of 11




Second Amended Plan of Reorganization, as further amended, dated July 17, 1995,
as confirmed by the U. S. Bankruptcy Court for the District of Delaware on
November 15, 1995. The undersigned are the proper officers to execute this
Certificate under the provisions of Section 303(c) of the General Corporation
Law of the State of Delaware.

         IN WITNESS WHEREOF, said COLUMBIA GAS TRANSMISSION CORPORATION has
caused this certificate to be signed by R. LARRY ROBINSON, its President and
attested by STEPHEN J. SMALL, its Secretary this 28th day of November, 1995.

                                  COLUMBIA GAS TRANSMISSION CORPORATION


                                  By /s/ R. Larry Robinson
                                    --------------------------------------------
                                               President

(Corporate Seal)

ATTEST:


By /s/ Stephen J. Small
  -----------------------------------
               Secretary

<PAGE>   1
                                   Exhibit 8-B
                                  Page 1 of 22

                                    ARTICLE I
                                     OFFICES

      Section 1. Registered Office. The registered office of Alamco, Inc. (the
"Corporation") shall be in the City of Wilmington, County of New Castle, State
of Delaware.

      Section 2. Other Offices. The Corporation may also have offices at such
other places both within and without the State of Delaware as the Corporation's
board of directors (the "Board of Directors") may from time to time determine or
the business of the Corporation may require.

                                   ARTICLE II
                            MEETINGS OF STOCKHOLDERS

      Section 1. Place. All meetings of the stockholders for the election of
directors shall be held in the County of New Castle, State of Delaware, at such
place as may be fixed from time to time by the Board of Directors, or at such
other place either within or without the State of Delaware as shall be
designated from time to time by the Board of Directors and stated in the notice
of the meeting. Meetings of stockholders for any other purpose may be held at
such time and place, within or without the State of Delaware, as shall be stated
in the notice of the meeting or in a duly executed waiver of notice thereof.

      Section 2. Annual Meetings. Annual meetings of stockholders shall be held
on the first Monday of June if not a legal holiday, and if a legal holiday, then
on the next secular day following, at 10:00 A.M., or at such other date and
time as shall be designated from time to time by the Board of Directors and
stated in the notice of the meeting, at which they shall
<PAGE>   2
                                   Exhibit 8-B
                                  Page 2 of 22

elect by a plurality vote a Board of Directors, and transact such other business
as may properly be brought before the meeting.

      Section 3. Notice. Written notice of the annual meeting stating the place,
date and hour of the meeting shall be given to each stockholder entitled to vote
at such meeting not less than ten (10) nor more than sixty (60) days before the
date of the meeting.

      Section 4. Stockholder's List. The officer who has charge of the stock
ledger of the Corporation shall prepare and make, at least ten days before every
meeting of stockholders, a complete list of the stockholders entitled to vote at
the meeting, arranged in alphabetical order, and showing the address of each
stockholder and the number of shares registered in the name of each
stockholder. Such list shall be open to the examination of any stockholder, for
any purpose germane to the meeting, during ordinary business hours, for a period
of at least ten (10) days prior to the meeting, either at a place within the
city where the meeting is to be held, which place shall be specified in the
notice of the meeting, or, if not so specified, at the place where the meeting
is to be held. The list shall also be produced and kept at the time and place of
the meeting during the whole time thereof, and may be inspected by any
stockholder who is present.

      Section 5. Special Meetings. Special meetings of the stockholders, for any
purpose or purposes, unless otherwise prescribed by statute or by the
Corporation's certificate of incorporation (as the same may be amended or
restated from time to time, the "Certificate of Incorporation"), may be called
by the president and shall be called by the president or secretary at the
request in writing of a majority of the Board of Directors, or at the request in
writing of stockholders owning a majority in amount of the entire capital stock
of the Corporation issued and outstanding and entitled to vote. Such request
shall state the purpose or purposes of the proposed meeting. Written notice of a
special meeting stating the place,
<PAGE>   3
                                   Exhibit 8-B
                                  Page 3 of 22

date and hour of the meeting and the purpose or purposes for which the meeting
is called, shall be given not less than ten (10) nor more than sixty (60) days
before the date of the meeting, to each stockholder entitled to vote at such
meeting. Business transacted at any special meeting of the stockholders shall be
limited to the purposes stated in the notice.

      Section 6. Quorum. The holders of a majority of the stock issued and
outstanding and entitled to vote thereat, present in person or represented by
proxy, shall constitute a quorum at all meetings of the stockholders for the
transaction of business except as otherwise provided by statute or by the
Certificate of Incorporation. If, however, such quorum shall not be present or
represented at any meeting of the stockholders, the stockholders entitled to
vote therea, present in person or represented by proxy, shall have power to
adjourn the meeting from time to time, without notice other than announcement at
the meeting, until a quorum shall be present or represented. At such adjourned
meeting, at which a quorum shall be present or represented, any business may be
transacted which might have been transacted at the meeting as originally
notified. If the adjournment is for more than thirty (30) days, or if after the
adjournment a new record date is fixed for the adjourned meeting, a notice of
the adjourned meeting shall be given to each stockholder of record entitled to
vote at the meeting. When a quorum is present at any meeting, the vote of the
holders of a majority of the stock having voting power present in person or
represented by proxy shall decide any question brought before such meeting,
unless the question is one upon which by express provision of statute or of the
Certificate of Incorporation, a different vote is required in which case such
express provision shall govern and control the decision of such question.

      Section 7. Votes. Unless otherwise provided in the Certificate of
Incorporation, each stockholder shall at every meeting of the stockholders be
entitled to one vote in person or by proxy for each share of the capital stock
having voting power held by such stockholder, but
<PAGE>   4
                                   Exhibit 8-B
                                  Page 4 of 22

no proxy shall be voted on after three years from its date, unless the proxy
provides for a longer period.

      Section 8. Action by Consent. Unless otherwise provided in the Certificate
of Incorporation, any action required to be taken at any annual or special
meeting of stockholders of the Corporation, or any action which may be taken at
any annual or special meeting of such stockholders, may be taken without a
meeting, without prior notice and without a vote, if a consent in writing,
setting forth the action so taken, shall be signed by the holders of outstanding
stock having not less than the minimum number of votes that would be necessary
to authorize or take such action at a meeting at which all shares entitled to
vote thereon were present and voted. Prompt notice of the taking of the
corporate action without a meeting by less than unanimous written consent shall
be given to those stockholders who have not consented in writing.

                                   ARTICLE III
                                    DIRECTORS

      Section 1. Number. The number of directors which shall constitute the
whole Board of Directors shall be not less than three (3). The number of
directors shall be determined by resolution of the Board of Directors or by the
stockholders at the annual meeting. The directors shall be elected at the annual
meeting of the stockholders, except as provided in Section 2 of this Article,
and each director elected shall hold office, until his or her successor is
elected and qualified. Directors need not be stockholders.

      Section 2. Vacancies. Vacancies and newly-created directorships
resulting from any increase in the authorized number of directors may be
filled by a majority of the directors then in office, though less than a
quorum, or by a sole remaining director, and the directors
<PAGE>   5
                                   Exhibit 8-B
                                  Page 5 of 22

so chosen shall hold office until the next annual election and until their
successors are duly elected and shall qualify, unless sooner displaced.  If
there are no directors in office, then an election of directors may be held
in the manner provided by statute.

      Section 3. General Powers. The business of the Corporation shall be
managed by the Board of Directors which may exercise all such powers of the
Corporation and do all such lawful acts and things as are not by statute or by
the Certificate of Incorporation or by these Bylaws directed or required to be
exercised or done by the stockholders.

      Section 4. Meetings of the Board of Directors. The Board of Directors may
hold meetings, both regular and special, either within or without the State of
Delaware. The first meeting of each newly-elected Board of Directors shall be
held at such time and place as shall be fixed by the vote of the stockholders at
the annual meeting and no notice of such meeting shall be necessary to the
newly-elected directors in order legally to constitute the meeting, provided all
of the directors shall be present. In the event of the failure of the
stockholders to fix the time or place of such first meeting of the newly-elected
Board of Directors, or in the event such meeting is not held at the time and
place so fixed by the stockholders, the meeting may be held at such time and
place as shall be specified in a notice given as hereinafter provided for
special meetings of the Board of Directors, or as shall be specified in a
written waiver signed by all of the Directors. In lieu of holding such meeting,
the newly-elected Board of Directors may act by written consent consistent with
these Bylaws.

      Section 5. Notice of Meetings. Regular meetings of the Board of Directors
may be held without notice at such time and at such place as shall from time to
time be determined by the Board of Directors. Special meetings of the Board of
Directors may be called by the President, the Secretary or any Assistant
Secretary on six (6) hours' notice to each director,
<PAGE>   6
                                   Exhibit 8-B
                                  Page 6 of 22

either personally or by mail or by telegram: special meetings shall be called
by the President, the Secretary or an Assistant Secretary in like manner and
on like notice on the written request of two directors.

      Section 6. Quorum. At all meetings of the Board of Directors, a majority
of the directors then in office shall constitute a quorum for the transaction of
business (provided that not less than one-third of the total number of directors
shall be necessary to constitute a quorum), and the act of a majority of the
directors present at any meeting at which there is a quorum shall be the act of
the Board of Directors, except as may be otherwise specifically provided by
statute or by the Certificate of Incorporation. If a quorum shall not be present
at any meeting of the Board of Directors, the directors present thereat may
adjourn the meeting from time to time, without notice other than announcement at
the meeting, until a quorum shall be present.

      Section 7.  Action by Consent. Unless otherwise specifically restricted
by the Certificate of Incorporation or these Bylaws, any action required or
permitted to be taken at any meeting of the Board of Directors or of any
committee thereof may be taken without a meeting, if all members of the Board
of Directors or committee, as the case may be, consent thereto in writing,
and the writing or writings are filed with the minutes of proceedings of the
Board of Directors or committee.

      Section 8. Telephonic Meetings. Unless otherwise specifically restricted
by the Certificate of Incorporation or these Bylaws, members of the Board of
Directors, or any committee designated by the Board of Directors, may
participate in a meeting of the Board of Directors, or any committee, by means
of conference telephone or similar communications equipment by means of which
all persons participating in the meeting can hear each other, and such
participation in a meeting shall constitute presence in person at the meeting.
<PAGE>   7
                                   Exhibit 8-B
                                  Page 7 of 22

      Section 9. Committees of Directors. The Board of Directors may, by
resolution passed by a majority of the whole Board of Directors, designate one
or more committees, each committee to consist of one or more of the directors of
the Corporation. The Board of Directors may designate one or more directors as
alternate members of any committee, who may replace any absent or disqualified
member at any meeting of the committee. In the absence or disqualification of a
member of a committee, the member or members thereof present at any meeting and
not disqualified from voting, whether or not he or they constitute a quorum, may
unanimously appoint another member of the Board of Directors to act at the
meeting in the place of any such absent or disqualified member. Any such
committee, to the extent provided in the resolution of the Board of Directors,
shall have and may exercise all the powers and authority of the Board of
Directors in the management of the business and affairs of the Corporation, and
may authorize the seal of the Corporation to be affixed to all papers which may
require it; but no such committee shall have the power or authority in reference
to the following matter: (i) approving or adopting, or recommending to the
stockholders, any action or matter expressly required by statute to be submitted
to stockholders for approval or (ii) adopting, amending or repealing any Bylaw
of the Corporation. Such committee or committees shall have such name or names
as may be determined from time to time by resolution adopted by the Board of
Directors. Each committee shall keep regular minutes of its meetings and report
the same to the Board of Directors.

      Section 10. Compensation of Directors. Unless otherwise specifically
restricted by the Certificate of Incorporation or these Bylaws, the Board of
Directors shall have the authority to fix the compensation of directors. The
directors may be paid their expenses, if any, of attendance at each meeting of
the Board of Directors and may be paid a fixed sum for attendance at each
meeting of the Board of Directors or a stated salary as director. No such
payment shall preclude any director from serving the Corporation in any other
capacity
<PAGE>   8
                                   Exhibit 8-B
                                  Page 8 of 22

and receiving compensation therefor.  Members of special or standing
committees may be allowed like compensation for attending committee meetings.

                                   ARTICLE IV
                                     NOTICES

      Whenever, under the provisions of applicable statute or of the
Certificate of Incorporation or of these Bylaws, notice is required to be
given to any director or stockholder, it shall not be construed to mean
personal notice, but such notice may be given in writing, by mail, addressed
to such director or stockholder, at his address as it appears on the records
of the Corporation, with postage thereon prepaid, and such notice shall be
deemed to be given at the time when the same shall be deposited in the United
States mail.  Notice may also be given by telegram, data fax, or other
similar method of transmitting a written communication.  A waiver of notice
in writing, signed by the person or persons entitled to said notice, whether
before or after the time stated therein, shall be deemed equivalent thereto.

                                    ARTICLE V
                                    OFFICERS

      Section 1. General. The officers of the Corporation shall be chosen by the
Board of Directors and shall be a president and at least one of the following: a
Secretary, a Treasurer and/or a Controller. The Board of Directors may also
choose Vice-Presidents and one or more Assistant Secretaries and Assistant
Treasurers and/or Assistant Controllers. Any number of offices may be held by
the same person, unless the Certificate of Incorporation or these Bylaws
otherwise provide. The Board of Directors may appoint such other officers and
agents as it shall deem necessary who shall have such titles hold their offices
for such
<PAGE>   9
                                   Exhibit 8-B
                                  Page 9 of 22

terms and shall exercise such powers and perform such duties as shall be
determined from time to time by the Board of Directors.

      Section 2. Compensation. The compensation of all officers and agents of
the Corporation shall be fixed by the Board of Directors.

      Section 3. Vacancies. The officers of the Corporation shall hold office
until their successors are chosen and qualify. Any officer elected or appointed
by the Board of Directors may be removed at any time by the Board of Directors.
Any vacancy occurring in any office of the Corporation shall be filled by the
Board of Directors.

      Section 4. The President and Vice Presidents. The President shall be the
chief executive officer of the Corporation, shall preside at all meetings of the
stockholders and the Board of Directors, shall have general and active
management of the business of the Corporation and shall see that all orders and
resolutions of the Board of Directors are carried into effect. The President
shall execute bonds, mortgages and other contracts requiring a seal, under the
seal of the Corporation, except where required or permitted by law to be
otherwise signed and executed and except where the signing and execution thereof
shall be expressly delegated by the Board of Directors to some other officer or
agent of the Corporation. The Vice President, or if there be more than one, the
Vice Presidents in the order determined by the Board of Directors (or if there
be no such determination, then in the order of their election), shall perform
such duties and exercise such powers as the Board of Directors may from time to
time prescribe.

      Section 5. Secretary. The Secretary shall attend all meetings of the
Board of Directors and all meetings of the stockholders and record all the
proceedings of the meetings of the Corporation and of the Board of Directors
in a book to be kept for that purpose and
<PAGE>   10
                                   Exhibit 8-B
                                  Page 10 of 22

shall perform like duties for the standing committees when required. The
Secretary shall give, or cause to be given, notice of all meetings of the
stockholders and special meetings of the Board of Directors, and shall perform
such other duties as may be prescribed by the Board of Directors or President,
under whose supervision he or she shall be. The Secretary shall have custody of
the corporate seal of the Corporation and the Secretary, or an Assistant
Secretary, shall have authority to affix the same to any instrument requiring it
and when so affixed, it may be attested by the signature of the Secretary, or an
Assistant Secretary. The Board of Directors may give general authority to any
other officer to affix the seal of the Corporation and to attest the affixing by
such officer's signature. An Assistant Secretary, or if there be more than one,
the Assistant Secretaries in the order determined by the Board of Directors (or
if there be no such determination, then in the order of their election), shall,
in the absence of the Secretary or in the event of the Secretary's inability or
refusal to act, perform the duties and exercise the powers of the Secretary and
shall perform such other duties and have such other powers as the Board of
Directors may from time to time prescribe.

      Section 6. Treasurer. The Treasurer and/or Controller, or as directed by
the Board of Directors, one or more Assistant Treasurers and/or Assistant
Controllers shall have the custody of the corporate funds and securities and
shall keep full and accurate accounts of receipts and disbursements in books
belonging to the Corporation and shall deposit all moneys and other valuable
effects in the name and to the credit of the Corporation in such depositories as
may be designated by the Board of Directors. The Treasurer and/or Controller or,
as directed by the Board of Directors, one or more Assistant Treasurers and/or
Assistant Controllers shall disburse the funds of the Corporation as may be
ordered by the Board of Directors, taking proper vouchers for such
disbursements, and shall render to the president and the Board of Directors, at
its regular meetings, or when the Board of Directors so requires, an account of
all transactions made as Treasurer/Assistant Treasurer and/or as
Controller/Assistant Controller and of the financial condition of the
Corporation. If required
<PAGE>   11
                                   Exhibit 8-B
                                  Page 11 of 22

by the Board of Directors, the Treasurer or an Assistant Treasurer and/or the
Controller or an Assistant Controller shall give the Corporation a bond (which
shall be renewed every six (6) years) in such sum and with such surety or
sureties as shall be satisfactory to the Board of Directors for the faithful
performance of the duties of their offices and for the restoration to the
Corporation, in case of their death, resignation, retirement or removal from
office, of all books, papers, vouchers, money and other property of whatever
kind in their possession or under their control belonging to the Corporation.
The Assistant Treasurer and/or Assistant Controller, or if there shall be more
than one, the Assistant Treasurers and/or Assistant Controllers in the order
determined by the Board of Directors (or if there be no such determination, then
in the order of their election) shall, in the absence of the Treasurer and/or
Controller or in the event of his or her inability or refusal to act, perform
the duties and exercise the powers of the Treasurer and/or Controller and shall
perform such other duties and have such other powers as the Board of Directors
may from time to time prescribe.

                                   ARTICLE VI
                                  CAPITAL STOCK

      Section 1. Registered Stockholders. The Corporation shall be entitled to
recognize the exclusive right of a person registered on its books as the owner
of shares to receive dividends, and to vote as such owner, and to hold liable
for calls and assessments a person registered on its books as the owner of
shares, and shall not be bound to recognize any equitable or other claim to or
interest in such share or shares on the part of any other person, whether or not
it shall have express or other notice thereof, except as otherwise provided by
the laws of the State of Delaware.

      Section 2. Certification. Shares of capital stock may be certificated
at the discretion of the Board of Directors.  If certificated, then every
holder of capital stock in the
<PAGE>   12
                                   Exhibit 8-B
                                  Page 12 of 22

Corporation shall receive a certificate, signed by, or in the name of the
Corporation, by the President or the Vice President and by the Treasurer or an
Assistant Treasurer and/or the Controller or an Assistant Controller, or by the
Secretary or an Assistant Secretary of the Corporation, certifying the number of
shares owned by him in the Corporation. Any of or all the signatures on the
certificate may be facsimile. In case any officer, transfer agent or registrar
who has signed or whose facsimile signature has been placed upon a certificate
shall have ceased to be such officer, transfer agent or registrar before such
certificate is issued, it may be issued by the Corporation with the same effect
as if he were such officer, transfer agent or registrar at the date of issue.

      Section 3. Lost Certificates. The Board of Directors may direct a new
certificate or certificates to be issued in place of any certificate or
certificates theretofore issued by the Corporation alleged to have been lost,
stolen or destroyed, upon the making of an affidavit of that fact by the person
claiming the certificate of stock to be lost, stolen or destroyed. When
authorizing such issue of a new certificate or certificates, the Board of
Directors may, in its discretion and as a condition precedent to the issuance
thereof, require the owner of such lost, stolen or destroyed certificate or
certificates, or his legal representative, to advertise the same in such manner
as it shall require and/or to give the Corporation a bond in such sum as it may
direct as indemnity against any claim that may be made against the Corporation
with respect to the certificate alleged to have been lost, stolen or destroyed.

      Section 4. Transfers of Stock. Upon surrender to the Corporation or the
transfer agent of the Corporation of a certificate for shares duly endorsed or
accompanied by proper evidence of succession, assignment or authority to
transfer, it shall be the duty of the Corporation to issue a new certificate to
the person entitled thereto, cancel the old certificate and record the
transaction upon its books.
<PAGE>   13
                                  Exhibit 8-B
                                  Page 13 of 22

      Section 5. Record Date. In order that the Corporation may determine the
stockholders entitled to notice of or to vote at any meeting of stockholders or
any adjournment thereof, or to express consent to corporate action in writing
without a meeting, or entitled to receive payment of any dividend or other
distribution or allotment of any rights, or entitled to exercise any rights in
respect of any change, conversion or exchange of stock or for the purpose of any
other lawful action, the Board of Directors may fix, in advance, a record date,
which shall not be more than sixty (60) nor less than ten (10) days before the
date of such meeting, nor more than sixty (60) days prior to any other action. A
determination of stockholders of record entitled to notice of or to vote at a
meeting of stockholders shall apply to any adjournment of the meeting; provided,
however, that the Board of Directors may fix a new record date for the adjourned
meeting.

      Section 6. Dividends. Dividends upon the capital stock of the
Corporation, subject to the provisions of the Certificate of Incorporation.
if any, may be declared by the Board of Directors at any regular or special
meeting, or by written consent, pursuant to law.  Dividends may be paid in
cash, in property, or in shares of the capital stock, subject to the
provisions of the Certificate of Incorporation.  Before payment of any
dividend, there may be set aside out of any funds of the Corporation
available for dividends such sum or sums as the directors from time to time,
in their absolute discretion, think proper as a reserve or reserves to meet
contingencies, or for equalizing dividends, or for repairing or maintaining
any property of the Corporation, or for such other purpose as the directors
shall think conducive to the interest of the Corporation, and the directors
may modify or abolish any such reserve in the manner in which it was created.
<PAGE>   14
                                   Exhibit 8-B
                                  Page 14 of 22


                                   ARTICLE VII

                                 INDEMNIFICATION

     Section 1. Right to Indemnification. The Corporation shall to the fullest
extent permitted by applicable law as then in effect indemnity any person (the
"Indemnitee") who was or is involved in any manner (including, without
limitation, as a party or a witness) or is threatened to be made so involved in
any threatened, pending or completed investigation, claim, action, suit or
proceeding, whether civil, criminal, administrative or investigative (including
without limitation, any action, suit or proceeding by or in the right of the
Corporation to procure a judgment in its favor) (a "Proceeding") by reason of
the fact that such person is or was a director, officer, employee or agent of
the Corporation, or is or was serving at the request of the Corporation as a
director, officer, employee or agent of another corporation, partnership, joint
venture, trust or other enterprise (including without limitation, any employee
benefit plan) against all expenses (including attorneys' fees), judgments, fines
and amounts paid in settlement actually and reasonably incurred by such person
in connection with such Proceeding. Such indemnification shall be a contract
right and shall include the right to receive payment of any expenses (including
attorney's fees) incurred by the Indemnitee in connection with such Proceeding
in advance of its final disposition, consistent with the provisions of
applicable law as then in effect.

     Section 2. Insurance, Contracts and Funding. The Corporation may purchase
and maintain insurance to protect itself and any indemnitee against any
expenses, judgments, fines and amounts paid in settlement as specified in
Section 1 of this Article VII or incurred by an Indemnitee in connection with
any proceeding referred to in Section 1 of this Article VII, to the fullest
extent permitted by applicable law as then in effect. The Corporation may enter
into contracts with any director, officer, employee or agent of the Corporation
or use
<PAGE>   15
                                   Exhibit 8-B
                                  Page 15 of 22

other means in furtherance of the provisions of this Article VII to ensure the
payment of such amounts as may be necessary to effect indemnification as
provided in this Article VII.

      Section 3. Indemnification: Not Exclusive Right. The right of
indemnification provided in this Article VIII shall not be exclusive of any
other rights to which those seeking indemnification may otherwise be entitled,
and the provisions of this Article VII shall inure to the benefit of the heirs
and legal representatives of any person entitled to indemnity under this Article
VII and shall be applicable to Proceedings commenced or continuing after the
adoption of this Article VII, whether arising from acts or omissions occurring
before or after such adoption.

      Section 4. Advancement of Expenses: Procedures: Presumptions and Effect
of Certain Proceedings: Remedies. In furtherance but not in limitation of the
foregoing provisions, the following procedures, presumptions and remedies shall
apply with respect to advancement of expenses and the right to indemnification
under this Article VII:

            (a) Advance of Expenses. All reasonable expenses (including
attorney's fees) incurred by or on behalf of the Indemnitee in connection with
any Proceeding shall be advanced to the Indemnitee by the Corporation within
twenty (20) days after the receipt by the Corporation of a statement or
statements from the Indemnitee requesting such advance or advances from time to
time, whether prior to or after final disposition of such Proceeding. Such
statement or statements shall reasonably evidence the expenses incurred by the
Indemnitee and, if required by law at the time of such advance, shall include or
be accompanied by an undertaking by or on behalf of the Indemnitee to repay the
amounts advanced if it should ultimately be determined that the Indemnitee is
not entitled to be indemnified against such expenses pursuant to this Article
VII.
<PAGE>   16
                                   Exhibit 8-B
                                  Page 16 of 22


            (b) Procedure for Determination of Entitlement to Indemnification.

                  (i) To obtain indemnification under this Article VII, an
Indemnitee shall submit to the secretary of the Corporation a written request,
including such documentation and information as is reasonably available to the
Indemnitee and reasonably necessary to determine whether and to what extent the
Indemnitee is entitled to indemnification (the "Supporting Documentation"). The
determination of the Indemnitee's entitlement to indemnification shall be made
not later than sixty (60) days after receipt by the Corporation of the written
request for indemnification together with Supporting Documentation. The
secretary of the Corporation shall advise the Board of Directors in writing,
promptly upon receipt of such a request for indemnification, that the Indemnitee
has requested indemnification.

                  (ii) The Indemnitee's entitlement to indemnification under
this Article VII shall be determined in one of the following ways: (A) by a
majority vote of the Disinterested Directors (as hereinafter defined), whether
or not they constitute a quorum of the Board of Directors; (B) by a written
opinion of Independent Counsel (as hereinafter defined) if (x) a Change of
Control (as hereinafter defined) shall have occurred and the Indemnitee so
requests or (y) a majority of such Disinterested Directors so directs; (C) by
the stockholders of the Corporation (but only a majority of the Disinterested
Directors present the issue of entitlement to indemnification to the
stockholders for their determination); or (D) as provided in Section 4(c) of
this Article VII.

                  (iii) In the event the determination of entitlement to
indemnification is to be made by Independent Counsel pursuant to Section
4(b)(ii) of this Article VII, a majority of the Board of Directors shall select
the Independent Counsel, but only an Independent Counsel to which the
Indemnitee does not reasonably object; provided, however, that if a Change of
Control shall have occurred, the Indemnitee shall select such Independent
Counsel, but only an Independent Counsel to which the Board of Directors does
not reasonably object.
<PAGE>   17
                                   Exhibit 8-B
                                  Page 17 of 22


                  (iv)The only basis upon which a finding of no entitlement to
indemnification may be made is that indemnification is prohibited by law.

            (c) Presumptions and Effect of Certain Proceedings. Except as
otherwise expressly provided in this Article VII, if a Change of Control shall
have occurred, the Indemnitee shall be presumed to be entitled to
indemnification under this Article VII upon submission of a request for
indemnification together with the Supporting Documentation in accordance with
Section 4(b)(i) of this Article VII, and thereafter the Corporation shall have
the burden of proof to overcome that presumption in reaching a contrary
determination. In any event, if the person or persons empowered under Section
4(b) to determine entitlement to indemnification shall not have been appointed
or shall not have made a determination within sixty (60) days after receipt by
the Corporation of the request therefor together with the Supporting
Documentation, the Indemnitee shall be deemed to be entitled to indemnification,
and the Indemnitee shall be entitled to such indemnification unless the
Indemnitee misrepresented or failed to disclose a material fact in making the
request for indemnification or in the Supporting Documentation or such
indemnification is prohibited by law. The termination of any Proceeding
described in Section 1 of this Article VII, or of any claim, issue or matter
therein, by judgment, order, settlement or conviction, or upon a plea of nolo
contendere or its equivalent, shall not of itself adversely affect the right of
the Indemnitee to indemnification or create a presumption that the Indemnitee
did not act in good faith and in a manner which the Indemnitee reasonably
believed to be in or not opposed to the best interests of the Corporation or,
with respect to any criminal Proceeding, that the Indemnitee had reasonable
cause to believe that the Indemnitee's conduct was unlawful.

            (d) Remedies of Indemnitee.

                  (i) In the event that a determination is made pursuant to
Section 4(b) or Section 4(c) of this Article VII that the Indemnitee is not
entitled to indemnification under
<PAGE>   18
                                   Exhibit 8-B
                                  Page 18 of 22

this Article VII, (A) the Indemnitee shall be entitled to seek an adjudication
of his entitlement to such indemnification either, at the Indemnitee's sole
option, in (x) an appropriate court of the State of Delaware or any other court
of competent jurisdiction or (y) an arbitration to be conducted by a single
arbitrator pursuant to the rules of the American Arbitration Association; (B)
any such judicial proceeding or arbitration shall be de novo and the Indemnitee
shall not be prejudiced by reason of such adverse determination. and (C) in any
such judicial proceeding or arbitration, the Corporation shall have the burden
of proving that the Indemnitee is not entitled to indemnification under this
Article VII.

                  (ii)If pursuant to Section 4(b) or Section 4(c) of this
Article VII a determination shall have been made or deemed to have been made
that the Indemnitee is entitled to indemnification, the Corporation shall be
obligated to pay the amounts constituting such indemnification within five (5)
days after such determination has been made or is deemed to have been made and
shall be conclusively bound by such determination unless (A) the Indemnitee
misrepresented or failed to disclose a material fact in making the request for
indemnification or in the Supporting Documentation or (B) such indemnification
is prohibited by law. In the event that (x) advancement of expenses is not
timely made pursuant to Section 4(a) of this Article VII or (y) payment of
indemnification is not made within five (5) days after a determination of
entitlement to indemnification has been made or deemed to have been made
pursuant to Section 4(b) or Section 4(c) of this Article VIII the Indemnitee
shall be entitled to seek judicial enforcement of the Corporation's obligation
to pay to the Indemnitee such advancement of expenses or indemnification.
Notwithstanding the foregoing, the Corporation may bring an action in an
appropriate court in the State of Delaware or any other court of competent
jurisdiction, contesting the right of the Indemnitee to receive indemnification
hereunder due to the occurrence of an event described in subclause (A) or (B) of
this clause (ii) (a "Disqualifying Event"); provided, however, that in any such
action the Corporation shall have the burden of proving the occurrence of such
Disqualifying Event.
<PAGE>   19
                                   Exhibit 8-B
                                  Page 19 of 22

                  (iii) The Corporation shall be precluded from asserting in any
judicial proceeding or arbitration commenced pursuant to this Section 4(d) that
the procedures and presumptions of this Article VII are not valid, binding and
enforceable and shall stipulate in any such court or before any such arbitrator
that the Corporation is bound by all the provisions of this Article VII

                  (iv) In the event that pursuant to this Section 4(d) the
Indemnitee seeks a judicial adjudication of or an award in arbitration to
enforce the Indemnitee's rights under, or to recover damages for breach of, this
Article VII, the Indemnitee shall be entitled to recover from the Corporation,
and shall be indemnified by the Corporation against any expenses actually and
reasonably incurred by the Indemnitee if the Indemnitee prevails in such
judicial adjudication or arbitration. If it shall be determined in such judicial
adjudication or arbitration that the Indemnitee is entitled to receive part but
not all of the indemnification or advancement of expenses sought, the expenses
incurred by the Indemnitee in connection with such judicial adjudication or
arbitration shall be prorated accordingly.

              (e) Definitions. For purposes of this Section 4:

                  (i) "Change in Control" means (A) so long as the Public
Utility Holding Company Act of 1935 is in effect, any "company" becoming a
"holding company" in respect to the Corporation or any determination by the
Securities and Exchange Commission that any "person" should be subject to the
obligations, duties, and liabilities if imposed by said Holding Company Act by
virtue or his, hers or its influence over the management or policies of the
Corporation, or (B) whether or not said Holding Company Act is in effect, a
change in control of the Corporation of a nature that would be required to be
reported in response to Item 6(e) of Schedule 14A of Regulation 14A promulgated
under the Securities Exchange Act of 1934 (the "Act"), whether or not the
Corporation is then subject to such reporting requirement: provided that,
without limitation, such a change in control shall be deemed to have occurred if
(i) any "person" (as such term is used in Section 13(d)
<PAGE>   20
                                   Exhibit 8-B
                                  Page 20 of 22

and 14(d) of the Act) is or becomes the "beneficial owner" (as defined in Rule
13d-3 under the Act), directly or indirectly, of securities of the Corporation
representing 1O% or more of the combined voting power of the Corporation's then
outstanding securities without the prior approval of at least two-thirds of the
members of the Board of Directors in office immediately prior to such
acquisition: (ii) the Corporation is a party to a merger, consolidation, sale of
assets or other reorganization, or a proxy contest, as a consequence of which
members of the Board of Directors in office immediately prior to such
transaction or event constitute less than a majority of the Board of Directors
thereafter; or (iii) during any period of two (2) consecutive years,
individuals who at the beginning of such period constituted the Board of
Directors (including for this purpose any new director whose election or
nomination for election by the Corporation's stockholders was approved by a vote
of at least two-thirds of the directors then still in office who were directors
at the beginning of such period) cease for any reason to constitute at least a
majority of the Board of Directors.

                  (ii) "Disinterested Director" means a director of the
Corporation who is not or was not a party to the Proceeding in respect of which
indemnification is sought by the Indemnitee.

                  (iii) "Independent Counsel" means a law firm or a member of a
law firm that neither presently is, nor in the past five (5) years has been,
retained to represent: (A) the Corporation or the Indemnitee in any matter
material to either such party or (B) any other party to the Proceeding giving
rise to a claim for indemnification under this Article VII. Notwithstanding the
foregoing, the term "Independent Counsel" shall not include any person who,
under the applicable standards of professional conduct then prevailing under the
law of the State of Delaware, would have a conflict of interest in representing
either the Corporation or the Indemnitee in an action to determine the
Indemnitee's rights under this Article VII.
<PAGE>   21
                                   Exhibit 8-B
                                  Page 21 of 22

      Section 5. Severability. If any provision or provisions of this Article
VII shall be held to be invalid, illegal or unenforceable for any reason
whatsoever; (i) the validity, legality and enforceability of the remaining
provisions of this Article VII (including, without limitation, all portions of
any paragraph of this Article VII containing any such provision held to be
invalid, illegal or unenforceable, that are not themselves invalid, illegal or
unenforceable) shall not in any way be affected or impaired thereby; and (ii) to
the fullest extent possible, the provisions of this Article VII (including,
without limitation, all portions of any paragraph of this Article VII containing
any such provision held to be invalid, illegal or unenforceable that are not
themselves invalid, illegal or unenforceable) shall be construed so as to give
effect to the intent manifested by the provision held invalid, illegal or
unenforceable.

      Section 6. Successor Laws, Regulations and Agencies. Reference herein to
laws, regulations or agencies shall be deemed to include all amendments thereof,
substitutions therefor and successors thereto.

                                  ARTICLE VIII
                               GENERAL PROVISIONS

      Section 1. Checks. All checks or demands for money and notes of the
Corporation shall be signed by such officer or officers or such other person or
persons as the Board of Directors may from time to time designate.

      Section 2. Fiscal Year. The fiscal year of the Corporation begins on the
first day of January and ends on the thirty-first day of December in each year.

      Section 3. Seal. The corporate seal shall have inscribed thereon the name
of the Corporation, the year of its organization and the words "Corporate Seal,
Delaware." The seal
<PAGE>   22
                                   Exhibit 8-B

                                  Page 22 of 22


may be used by causing it or a facsimile thereof to be impressed or affixed
or reproduced or otherwise.

     Section 4. Amendments. These Bylaws may be altered, amended or repealed or
new Bylaws may be adopted by the stockholders or by the Board of Directors, when
such power is conferred upon the Board of Directors by the Certificate of
Incorporation, at any regular meeting of the stockholders or of the Board of
Directors or at any special meeting of the stockholders or of the Board of
Directors if notice of such alteration, amendment, repeal or adoption of new
Bylaws be contained in the notice of such special meeting.

                         Adopted as of: August 7, 1997.


<PAGE>   1

                                   Exhibit 9-A
                                   Page 1 of 2


                            CERTIFICATE OF AMENDMENT
                                       OF
                          CERTIFICATE OF INCORPORATION
                                       OF
                                CLNG CORPORATION





         CLNG CORPORATION, a corporation organized and existing under and by
virtue of the General Corporation Law of the State of Delaware,

         DOES HEREBY CERTIFY:

         FIRST: That the Board of Directors of said Corporation (the "Board"),
by unanimous consent dated as of June 1, 1996, adopted resolutions proposing and
declaring advisable an amendment to Part SEVENTH of the Certificate of
Incorporation of said Corporation as follows:

                  RESOLVED, that the Board of Directors finds advisable and
         hereby proposes to the stockholders of the Corporation that part
         SEVENTH of the Certificate of Incorporation of the Corporation be
         amended in its entirety to read as follows:

                  "SEVENTH. For the management of the business and for the
         conduct of the affairs of the Corporation, it is further provided:

                  1.       The number of directors of the Corporation shall be
         as from time to time shall be fixed by, or in the manner provided in ,
         the By-Laws, and in no case shall the number be less than TWO (2). The
         directors need not be stockholders of the Corporation.

                  2.       In furtherance, and not in limitation, of the powers
         conferred by statute, the Board of Directors is expressly authorized:

                           (a)      to make, alter or repeal by-laws of the
         Corporation, subject to the power of the stockholders of the
         corporation to alter or repeal any by-laws whether adopted by the
         stockholders or otherwise.

                           (b)      to exercise the powers and authorities as
         are provided in the By-Laws then in effect, subject to applicable
         limitations as provided in such By-Laws."

                  RESOLVED, FURTHER, that the foregoing amendment is advisable
         and its adoption is in the best interests of
<PAGE>   2
                                   Exhibit 9-A
                                   Page 2 of 2


         the Corporation and its stockholders and, to effectuate the foregoing,
         it is hereby directed that the foregoing amendment be considered at the
         next annual meeting of the stockholders, unless earlier approved by
         written consent in accordance with Section 228 of the Delaware General
         Corporation Law; and

                  RESOLVED FURTHER, that after approval of such amendments by
         the stockholders of the Corporation, the officers of the Corporation
         be, and they hereby are, authorized and directed to execute,
         acknowledge and file with the Secretary of State of the State of
         Delaware a Certificate of Amendment to evidence the foregoing
         amendments to the Corporation's Restated Certificate of Incorporation."

         SECOND: That thereafter, by resolution, the Board declared said
amendment to be advisable and its adoption to be in the best interests of the
Corporation and its stockholders and, to effectuate the foregoing, the Board
directed that said amendment be considered at the next annual meeting of the
stockholders, unless otherwise approved by written consent in accordance with
Section 228 of the Delaware General Corporation Law.

         THIRD: That in lieu of a meeting and vote of the stockholders, Columbia
LNG Corporation, being the holder of all of the outstanding stock of the
Corporation and therefore having not less than the minimum number of votes that
would be necessary to authorize or take action at a meeting at which all shares
entitled to vote thereon were present and voted, approved said amendment by
written Consent dated as of June 3, 1996, in accordance with the provisions of
Section 228(a) of the General Corporation Laws of the State of Delaware.

         FOURTH: That said amendment was duly adopted in accordance with the
applicable provisions of Sections 242 and 228 of the General Corporation Law of
the State of Delaware.

         IN WITNESS WHEREOF, CLNG Corporation has caused this Certificate to be
signed by L. Michael Bridges, its President and attested by Tejinder S. Bindra,
its Secretary, this ____ th day of _______, 1997.


                                       By:
                                          --------------------------------------
                                                        President




ATTEST:
       --------------------------------------
                     Secretary

<PAGE>   1
                                  Exhibit 10-B
                                  Page 1 of 13


                                     BYLAWS
                                       OF
                         HAWG HAULING AND DISPOSAL, INC.

                               ARTICLE I. OFFICES


The principal offices of the Corporation shall be located at Route 1, Box 84A,
Buckhannon, West Virginia, 26201. The Corporation may have such other offices,
either within or without the State of West Virginia, as the Board of Directors
may designate or as the business of the Corporation may require from time to
time.


                            ARTICLE II. SHAREHOLDERS


Section 1.  Annual Meeting. The annual meeting of the Shareholders shall be held
on the fourth Friday in April in each year, at the hour of 10:00 A.M., local
time, or at such other time on such other day within such month as shall be
fixed by the Board of Directors, for the purpose of electing Directors and for
the transaction of such other business as may come before the meeting. If the
day fixed for the annual meeting shall be a legal holiday in the State of the
principal office of the Corporation, such meeting shall be held on the next
succeeding business day.


Section 2.  Special Meetings. Special meetings of the Shareholders, for any
purpose or purposes, may be called by the Chairman of the Board, if any,
President, Secretary, or by the Board of Directors, and shall be called by the
President at the request of the holders of not less than one-tenth (1/10) of all
outstanding shares of the Corporation entitled to vote at the meeting.


Section 3.  Place of Meeting. The Board of Directors may designate any place,
either within or without the State of West Virginia, as the place of meeting for
any annual meeting or for any special meeting called by the Board of Directors.
If no designation is made, or if a special meeting be otherwise called, the
place of meeting shall be the principal office of the Corporation.
<PAGE>   2
                                  Exhibit 10-B
                                  Page 2 of 13




Section 4.  Action by Conference Telephone or Electronic Communication. One or
more Shareholders may participate and vote on any corporate action at a meeting
of the Shareholders by means of conference telephone or similar electronic
communications equipment by means of which all persons participating in the
meeting can hear each other. Whenever a vote of the Shareholders is required or
permitted in connection with any corporate action, such vote may be taken orally
during the electronic conference. Any agreement reached during any such
conference shall have like effect and validity as though the action were duly
taken by the action of the Shareholders at a meeting of Shareholders if the
agreement is reduced to writing and approved by the Shareholders at the next
regular meeting of the Shareholders after the conference.

Section 5.  Notice of Meeting. Written notice stating the place, day and hour of
the meeting and, in case of a special meeting, the purpose or purposes for which
the meeting is called, shall be delivered not less than ten (10) nor more than
fifty (50) days before the date of the meeting, either personally or by mail, by
or at the direction of the Chairman of the Board, if any, President, Secretary
or the officer or other persons calling the meeting, to each Shareholder of
record entitled to vote at such meeting. If mailed, such notice shall be deemed
to be delivered when deposited in the United States mail, addressed to the
Shareholder at his address as it appears on the Stock Transfer Books of the
Corporation, with postage thereon prepaid.

Section 6.  Closing of Transfer Books or Fixing of Record Date. For the purpose
of determining Shareholders entitled to notice of or vote at any meeting of
Shareholders or any adjournment thereof, or Shareholders entitled to receive
payment of any dividend, or in order to make a determination of Shareholders for
any other proper purpose, the Board of Directors of the Corporation may provide
that the Stock Transfer Books shall be closed for a stated period but not to
exceed, in any case, fifty (50) days. If the Stock Transfer Books shall be
closed for the purpose of determining Shareholders entitled to notice of or to
vote at a meeting of Shareholders, such books shall be closed for at least ten
(10) days immediately preceding such meeting. In lieu of closing the Stock
Transfer Books, the Board of Directors may fix in advance a date as the record
date for any such determination of Shareholders, such date in any case to be not
more than fifty (50) days and, in case of a meeting of Shareholders, not less
than ten (10) days prior to the date on which the particular action, requiring
such determination of Shareholders, is to be taken. If the Stock Transfer Books
are not closed and no record date is fixed for the determination of Shareholders
entitled to notice of or to vote at a meeting of Shareholders, or Shareholders
entitled to receive payment of a dividend, the date on which notice of the
meeting is mailed or the date on which the resolution of the Board of Directors
declaring such dividend is adopted, as the case may be, shall be the record date
for such determination of Shareholders. When a determination of Shareholders
entitled to vote at any meeting or Shareholders has been made as provided in
this section, such determination shall apply to any adjournment thereof.
<PAGE>   3
                                  Exhibit 10-B
                                  Page 3 of 13

Section 7.  Voting Record. The Officer or agent having charge of the Stock
Transfer Books for shares of the Corporation shall make a complete record of the
Shareholders entitled to vote at each meeting of Shareholders or any adjournment
thereof, arranged in alphabetical order, with the address of and the number of
shares held by each. Such record shall be produced and kept open at the time and
place of the meeting and shall be subject to inspection by any Shareholder
during the whole time of the meeting for the purposes thereof.

Section 8. Quorum.  A majority of the outstanding shares of the Corporation
entitled to vote, represented in person or by proxy, shall constitute a quorum
at a meeting of Shareholders. If less than a majority of the outstanding shares
are represented at a meeting, a majority of the shares so represented may
adjourn the meeting from time to time without further notice. At such adjourned
meeting at which a quorum shall be present or represented, any business may be
transacted which might have been transacted at the meeting as originally
noticed. The Shareholders present at a duly organized meeting may continue to
transact business until adjournment, notwithstanding the withdrawal of enough
Shareholders to leave less than a quorum.

Section 9. Proxies.  At all meeting of Shareholders, a shareholder may vote in
person or by proxy executed in writing by the Shareholder or by his duly
authorized attorney-in-fact. Such proxy shall be filed with the Secretary of the
Corporation before or at the time of the meeting. No proxy shall be valid after
eleven (11) months from the date of its execution, unless otherwise provided in
the proxy.

Section 10. Voting of Shares.  Each outstanding share entitled to vote shall be
entitled to one vote upon each matter submitted to a vote at a meeting of
Shareholders.

Section 11. Voting of Shares by Certain Holders.  Shares standing in the name of
another corporation may be voted by such officer, agent or proxy as the bylaws
of such corporation may prescribe, or, in the absence of such provision, as the
board of directors of such other corporation may determine.

Shares held by an administrator, executor, guardian, committee, curator or
conservator may be voted by him, either in person or by proxy, without a
transfer of such shares into his name. Shares standing in the name of a trustee
may be voted by him, either in person or by proxy, but no trustee shall be
entitled to vote shares held by him without a transfer of such shares into his
name. 
<PAGE>   4
                                  Exhibit 10-B
                                  Page 4 of 13


Shares standing in the name of a receiver may be voted by such receiver, and
shares held by or under the control of a receiver may be voted by such receiver
without the owner thereof into his name if authority so to do be contained in an
appropriate Order of the Court by which such receiver was appointed.

A Shareholder whose shares are pledged shall be entitled to vote such shares
until the shares have been transferred into the name of the pledgee, and
thereafter the pledgee shall be entitled to vote the shares so transferred.

Neither treasury shares of its own stock held by the Corporation, nor shares
held by another corporation if a majority of the shares entitled to vote for the
election of directors of such other corporation are held by the Corporation,
shall be voted at any meeting or counted in determining the total number of
outstanding shares at any given time for purposes of any meeting.


Section 12. Waiver of Notice. Notice of the time, place or purpose of any
meeting of the Shareholders may be dispensed with as to a Shareholder who shall
attend either in person or by proxy, and as to an absent Shareholder who shall,
in writing, filed with the records of the meeting either before or after the
holding thereof, waive such notice.


Section 13. Information by Shareholders. Any action required or permitted to
be taken at a meeting of the Shareholders may be taken without a meeting if a
consent in writing, setting forth the action so taken, shall be signed by all of
the Shareholders entitled to vote with respect to the subject matter thereof.

                         ARTICLE III. BOARD OF DIRECTORS

Section 1.  General Powers. The business, property and affairs of the 
Corporation shall be managed by its Board of Directors.

Section 2.  Number, Tenure and Qualifications. The number of Directors of the
Corporation shall be not less than one (1) nor more than five (5). Each Director
shall hold office until the next annual meeting of Shareholders and until his
successor shall have been elected and qualified or until his prior death,
resignation or removal. Directors need not be residents of the State of West
Virginia, or Shareholders of the Corporation.
<PAGE>   5
                                  Exhibit 10-B
                                  Page 5 of 13




Section 3.  Regular Meetings. A regular meeting of the Board of Directors shall
be held without other notice than this Bylaw immediately after, and at the same
place as, the annual meeting of Shareholders. The Board of Directors may
provide, by resolution, the time and place, either within or without the State
of West Virginia, for the holding of additional regular meetings without other
notice than such resolution.


Section 4.  Special Meetings. Special meetings of the Board of Directors may be
called by or at the request of the President or any Director. The person or
persons authorized to call special meetings of the Board of Directors may fix
any place, either within or without the State of West Virginia, as the place for
holding any special meeting of the Board of Directors called by them.


Section 5.  Action By Conference Telephone or Electronic Communication. One or
more Directors may participate and vote on any corporate action at a meeting of
the Board of Directors by means of conference telephone or similar electronic
communications equipment by means of which all persons participating in the
meeting can hear each other. Whenever a vote of the Directors is required or
permitted in connection with any corporate action, such vote may be taken orally
during the electronic conference. Any agreement reached during any such
conference shall have like effect and validity as though the action were duly
taken by the action of the Directors at a meeting of the Board of Directors if
the agreement is reduced to writing and approved by the Directors at the next
regular meeting of the Board of Directors after the conference.


Section 6.  Notice. Waiver of Notice. Notice of any special meeting shall be
given at least three (3) days previously thereto by written notice delivered
personally or mailed to each Director at his business address, or by telegram.
If mailed at least five (5) days prior to the date of meeting, such notice shall
be deemed to be delivered when deposited in the United States mail, so
addressed, with postage thereon prepaid. If notice be given by telegram, such
notice shall be deemed to be delivered when the telegram is delivered to the
telegraph company. Any Director may waive notice of any meeting either before or
after the holding thereof. The attendance of a Director at a meeting shall
constitute a waiver of notice of such meeting, except where a Director attends a
meeting for the express purpose of objecting to the transaction of any business
because the meeting is not lawfully called or convened. Neither the business to
be transacted at, nor the purpose of, any regular or special meeting of the
Board of Directors need be specified in the notice of waiver of notice of such
meeting, except as otherwise provided by statute.
<PAGE>   6
                                  Exhibit 10-B
                                  Page 6 of 13


Section 7.  Quorum. The quorum for the transaction of business at any meeting of
the Board of Directors shall consist of one (1) if the total number of Directors
in office at the time of the meeting is one (1). If the total number of
Directors in office at the time of the meeting is two (2), a quorum shall
consist of both Directors. If the total number of Directors in office at the
time of the meeting is three (3) or more, a quorum shall consist of a majority
of the Directors, If less than a quorum is present at a meeting, a majority of
the Directors present may adjourn the meeting from time to time without further
notice.


Section 8.  Manner of Acting. The act of the majority of the Directors present 
at a meeting at which a quorum is present shall be the act of the Board of
Directors.


Section 9.  Action Without a Meeting. Any action required or permitted to be
taken by the Board of Directors at a meeting may be taken without a meeting if a
consent in writing, setting forth the action so taken, shall be signed by all of
the Directors.


Section 10. Committees. The Board of Directors, by resolution adopted by a
majority of the Board of Directors, may designate from among its members an
executive committee and/or one or more other committees each of which shall have
such powers and authority (to the extent permitted by law) as may be provided in
such resolution. Each such committee shall serve at the pleasure of the Board 
of Directors.


Section 11. Director Conflicts of Interest. No contract or other transaction
between this Corporation and one or more of its Directors or any other
corporation, firm, association or entity in which one or more of its directors
are Directors or Officers of this Corporation or are financially interested
shall be either void or voidable because of such relationship or interest or
because such Director or Directors are present at the meeting of the Board of
Directors or a committee thereof which authorizes, approves or ratifies such
contract or transaction or because his or their votes are counted for such
purpose, if:

            (a) The fact of such relationship or interest is disclosed or known
to the Board of Directors or committee which authorizes, approves or ratifies
such contract or transaction by a vote or consent sufficient for the purpose
without counting the votes or consents of such interested Directors; or

            (b) The fact of such relationship or interest is disclosed or known
to the Shareholders entitled to vote and they authorize, approve or ratify such
contract or transaction by vote or written consent; or
<PAGE>   7
                                  Exhibit 10-B
                                  Page 7 of 13


            (c) The contract or transaction is fair and reasonable to the
Corporation.

Common or interested Directors may be counted in determining the presence of a
quorum at a meeting of the Board of Directors or a committee thereof which
authorizes, approves or ratifies such contract or transaction.

On any question involving the authorization, approval or ratification of any
such contract or transaction, the names of those Directors or Shareholders, as
the case may be, voting each way shall be entered on the record of the
proceedings.


Section 12. Removal. Any Director or Directors may be removed, either with or
without cause, at any time, by the vote of the Shareholders holding a majority
of the shares then issued and outstanding and who were entitled to vote for the
election of the Director or Directors sought to be removed, at any special
meeting of the Shareholders called for that purpose.


Section 13. Resignation. Any Director may resign at any time by giving written
notice to the Board of Directors, the President or the Secretary. Unless
otherwise specified in such written notice, such resignation shall take effect
upon receipt thereof by the Board of Directors or such Officer, and the
acceptance of such resignation shall not be necessary to make it effective.


Section 14. Vacancies. Any vacancy occurring in the Board of Directors may be
filled by the affirmative vote of a majority of the remaining Directors, even
though less than a quorum of the Board of Directors. A Director elected to fill
a vacancy shall be elected for the unexpired term of his predecessor in office.
Any Directorship to be filled by reason of an increase in the number of
Directors may be filled by election by the Board of Directors for a term of
office continuing only until the next election of Directors by the Shareholders.


Section 15. Compensation. By resolution of the Board of Directors, each Director
may be paid his expenses, if any, of attendance at each meeting of the Board of
Directors, or committee thereof, and may he paid a stated salary as Director or
a fixed sum for attendance at each meeting of the Board of Directors or
committee thereof or both. No such payment shall preclude any Director from
serving the Corporation in any other capacity and receiving compensation
therefor.


Section 16. Presumption of Assent. A Director of the Corporation who is present
at a meeting of the Board of Directors at which action on any corporate matter
is taken shall be presumed to have assented to the action taken unless his
dissent shall be entered in the minutes of the meeting
<PAGE>   8
                                  Exhibit 10-B
                                  Page 8 of 13


or unless he shall file his written dissent to such action with the person
acting as the Secretary of the meeting before the adjournment thereof or shall
forward such dissent by registered mail to the Secretary of the Corporation
immediately after the adjournment of the meeting. Such right to dissent shall
not apply to a Director who voted in favor of such action.

                              ARTICLE IV. OFFICERS

Section 1. Number. The Officers of the Corporation shall be a President, one
or more Vice Presidents (the number thereof to be determined by the Board of
Directors), a Secretary, and a Treasurer, each of whom shall be elected by the
Board of Directors. A Chairman of the Board of Directors and such other Officers
and Assistant Officers as may be deemed necessary may be elected or appointed by
the Board of Directors. Any two or more offices may be held by the same person,
except the offices of President and Secretary. The President and the Chairman of
the Board, if any, shall be elected from the membership of the Board of
Directors, but the other Officers need not be Directors.

Section 2.  Election and Term of Office. The Officers of the Corporation to be
elected by the Board of Directors shall be elected annually by the Board of
Directors at the first meeting of the Board of Directors held after each annual
meeting of the Shareholders. If the election of Officers shall not be held at
such meeting, such election shall be held as soon thereafter as conveniently may
be. Each Officer shall hold office until his successor shall have been duly
elected and shall have qualified or until his prior death, resignation or
removal.


Section 3.  Removal. Any Officer may be removed, with or without cause, at any
time, by the vote of a majority of the Board of Directors.


Section 4.  Resignation. Any Officer may resign at any time by giving written
notice to the Board of Directors, the President or the Secretary. Unless
otherwise specified in such written notice, such resignation shall take effect
upon receipt thereof by the Board of Directors or such Officer, and the
acceptance of such resignation shall not be necessary to make it effective.


Section 5.  Vacancies. A vacancy in any office because of death, resignation,
removal, disqualification or otherwise, may be filled by the Board of Directors
for the unexpired portion of the term.
<PAGE>   9
                                                                    Exhibit 10-B
                                                                    Page 9 or 13


Section 6. Chairman of the Board and President. The Chairman of the Board or the
President, as the Board of Directors may from time to time determine, shall be
the principal executive officer of the Corporation. The principal executive
officer of the Corporation shall in general supervise and control all of the
business and affairs of the Corporation, subject to the control of the Board of
Directors. He shall, when present, preside at all meetings of the Shareholders.
Whether the Chairman of the Board or the President be designated as the
principal executive officer of the Corporation the other shall, in the absence
or incapacity of the principal executive officer or by his authority may,
exercise any of the powers of the principal executive officer. The Chairman of
the Board or the President may sign deeds, mortgages, bonds, contracts, or
other instruments which the Board of Directors has authorized to be executed,
except in cases where the signing and executing thereof shall be expressly
delegated by the Board or by these Bylaws to some other Officer or agent of the
Corporation, or shall be required by law to be otherwise signed or executed.
The Chairman of the Board and the President shall each, in general, perform all
duties incident to their respective offices and shall perform such other duties
as may be prescribed by the Board of Directors from time to time.

Section 7. The Vice President. In the absence of the Chairman of the Board and
President or in the event of their death, inability or refusal to act, the Vice
President (or in the event there may be more than one Vice President, the Vice
Presidents in the order designated at the time of their election, or in the
absence of any designation, then in the order of their election) shall perform
the duties of the Chairman of the Board and President, and when so acting,
shall have all the powers of and be subject to all the restrictions upon the
Chairman of the Board and President. Any Vice President may sign, with the
Secretary or an Assistant Secretary, certificates for shares of the
Corporation; and shall perform such other duties as from time to time may be
assigned to him by the principal executive officer of the Corporation, the
Bylaws or the Board of Directors.

Section 8. The Secretary. The Secretary shall: (a) keep the minutes of the
proceedings of the Shareholders and of the Board of Directors in one or more
books provided for that purpose; (b) see that all notices are duly given in
accordance with the provisions of these Bylaws or as required by law; (c) be
custodian of the corporate records and of the seal of the Corporation and see
that the seal of the Corporation is affixed to all documents, the execution of
which on behalf of the Corporation under its seal is duly authorized; (d) keep
a register of the post office address of each Shareholder which shall be
furnished to the Secretary by such Shareholder; (3) sign with the President,
or a Vice President, certificates for shares of the Corporation, the issuance
of which shall have been authorized by resolution of the Board of Directors;
(f) have general charge of the Stock Transfer Books of the Corporation; and (g)
in general perform all duties incident to the office of Secretary and such
other duties as from time to time may be assigned to him by the principal
executive officer of the Corporation, the Bylaws or by the Board of Directors.


<PAGE>   10
                                  Exhibit 10-B

                                  Page 10 of 13


Section 9.  The Treasurer. The Treasurer shall: (a) have charge and custody of
and be responsible for all funds and securities of the Corporation; (b) receive
and give receipts for moneys due and payable to the Corporation from any source
whatsoever, and deposit all such moneys in the name of the Corporation in such
banks, trust companies or other depositories as shall be selected in accordance
with the provisions of Article V of these Bylaws; and (c) in general perform all
of the duties incident to the office of Treasurer and such other duties as from
time to time may be assigned to him by the principal executive officer of the
Corporation, the Bylaws or by the Board of Directors. If required by the Board
of Directors, the Treasurer shall give bond for the faithful discharge of his
duties in such sum and with such surety or sureties as the Board of Directors
shall determine.


Section 10. Assistant Secretaries and Assistant Treasurers. The Assistant
Secretaries, when authorized by the Board of Directors, may sign with the
President or a Vice President certificates for shares of the Corporation the
issuance of which shall have been authorized by a resolution of the Board of
Directors. The Assistant Treasurers shall respectively, if required by the Board
of Directors, give bonds for the faithful discharge of their duties in such sums
and with such sureties as the Board of Directors shall determine. The Assistant
Secretaries and Assistant Treasurers, in general, shall perform such duties as
shall be assigned to them by the Secretary or the Treasurer, respectively, or by
the principal executive officer of the Corporation, the Bylaws or by the Board
of Directors.


Section 11. Officers' Salaries. The salaries of the Officers shall be fixed
from time to time by the Board of Directors and no Officer shall be prevented
from receiving such salary by reason of the fact that he is also a Director of
the Corporation.

                ARTICLE V. CONTRACTS, LOANS, CHECKS AND DEPOSITS


Section 1.  Contracts. The Board of Directors may authorize any Officer or
Officers, agent or agents, to enter into any contract or execute and deliver any
instrument in the name of and on behalf of the Corporation, and such authority
may be general or confined to specific instances.


Section 2.  Loans. No loans shall be contracted on behalf of the Corporation and
no evidences of indebtedness shall be issued in its name unless authorized by a
resolution of the Board of Directors. Such authority may be general or confined
to specific instances. The Board of Directors may encumber and mortgage real
estate and pledge, encumber and mortgage stocks, bonds and other securities and
other personal property of all types, tangible and intangible, and convey any
such property in trust to secure the payment of corporate obligations.
<PAGE>   11
                                  Exhibit 10-B
                                  Page 11 of 13


Section 3.  Checks, Drafts, Etc. All checks, drafts, or other orders for the
payment of money, notes or other evidences of indebtedness issued in the name of
the Corporation shall be signed by such Officer or Officers, agent or agents of
the Corporation and in such manner as shall from time to time be determined by
resolution of the Board of Directors.


Section 4.  Deposits. All funds of the Corporation not otherwise employed shall
be deposited from time to time to the credit of the Corporation in such banks,
trust companies or other depositories as the Board of Directors may select.


         ARTICLE VI.  CERTIFICATES FOR SHARES AND THEIR TRANSFER


Section 1.  Certificates for Shares. Certificates representing shares of the
Corporation shall be in such form as shall be determined by the Board of
Directors. Such certificates shall be signed by the President or a Vice
President and by the Secretary or an Assistant Secretary and sealed with the
Corporate Seal or a facsimile thereof. The signatures of such Officers upon a
certificate may be facsimiles if the certificate is manually signed on behalf of
the transfer agent or a registrar, other than the Corporation itself or one of
its employees. Each certificate for shares shall be consecutively numbered or
otherwise identified. The name and address of the person to whom the shares
represented thereby are issued, with the number of shares and date of issue,
shall be entered on the Stock Transfer Books of the Corporation. All
certificates surrendered to the Corporation for transfer shall be cancelled and
no new certificates shall be issued until the former certificate for a like
number of shares shall have been surrendered and cancelled, except that in case
of a lost, destroyed or mutilated certificate a new one may be issued therefor
upon such terms and indemnity to the Corporation as the Board of Directors may
prescribe.


Section 2.  Transfer of Shares. Transfer of shares of the Corporation shall be
made only on the Stock Transfer Books of the Corporation by the holder of record
thereof or by his legal representative, who shall furnish proper evidence of
authority to transfer, or by his attorney thereunto authorized by power of
attorney duly executed and filed with the Secretary of the Corporation, and on
surrender for cancellation of the certificate for such shares. The person in
whose name shares stand on the books of the Corporation shall be deemed by the
Corporation to be the owner thereof for all purposes.


Section 3.  Issuance and Sale of Shares. The Board of Directors may from time to
time issue, or provide for the issuance of, the authorized shares of the
Corporation for money at not less than the par value thereof. Shares of the
Corporation shall not be sold at less than par value except when, and to the
extent such sale is authorized by a resolution, specifying the number,
<PAGE>   12
                                  Exhibit 10-B
                                  Page 12 of 13





or maximum number of shares to be so sold, and the sale price, or minimum sale
price, passed at any meeting of the Shareholders by a vote of three-fourths 
(3/4) of all of the shares entitled to vote.


Section 4.  Issuance of Shares for Property, Etc. The Board of Directors may 
also from time to time issue, or provide for the issuance of, the authorized
shares of the Corporation in payment wholly or partly for cash, labor done, real
and/or personal property, or for the use thereof, at such price for any such
labor or property or the use thereof, as may be fixed by agreement between the
owner of the property and the Board of Directors, but before doing so the Board
of Directors shall by resolution state its opinion of the fair value of the
labor done or property received for which such shuts are to be issued.


Section 5.  Proceeds of Shares. The books of the Corporation shall be so kept as
to show at all times what money or other consideration was received by the
Corporation for the shares issued by it, and the number and par value of all
shares issued.


Section 6.  Lost Certificates. Any person claiming a certificate of shares to be
lost or destroyed shall make an affidavit or affirmation of that fact, and if
requested to do so by the Board of Directors shall advertise such fact in such
manner as the Board of Directors may require, and shall give the Corporation a
bond of indemnity in such sum as the Board of Directors may direct, but not less
than double the value of shares represented by such certificate, in form
satisfactory to the Board of Directors and with or without sureties as the Board
of Directors may prescribe; whereupon the President and the Secretary may cause
to be issued a new certificate of the same tenor and for the same number of
shares as the one alleged to have been lost or destroyed, but always subject to
the approval of the Board of Directors.


Section 7.  Stock Transfer Books. The Stock Transfer Books of the Corporation
shall be kept in the principal office of the Corporation and shares shall be
transferred under such regulations as may be prescribed by the Board of
Directors.


                            ARTICLE VII. FISCAL YEAR


The fiscal year of the Corporation may be fixed and may be changed from time to
time by resolution of the Board of Directors. Until the Board of Directors has
acted to fix such fiscal year, the fiscal year of the Corporation shall begin on
the first day of January and end on the thirty-first day of December in each
year.
<PAGE>   13
'                                  Exhibit 10-B
                                  Page 13 of 13



                             ARTICLE VIII. DIVIDENDS

The Board of Directors may, from time to time, declare and the Corporation may
pay dividends on its outstanding shares in the manner and upon the terms and
conditions provided by law and its Articles of Incorporation.


                           ARTICLE IX. CORPORATE SEAL

The Board of Directors shall provide a corporate seal which shall be circular in
form and shall have inscribed thereon the name of the Corporation, the State of
incorporation and the words "Corporate Seal".


                 ARTICLE X. VOTING SHARES OF OTHER CORPORATIONS

Unless otherwise ordered by the Board of Directors, shares in other corporations
held by this Corporation may be voted by the Chairman of the Board or the
President of this Corporation.


                         ARTICLE XI. RELIANCE ON RECORDS

Each Officer and Director shall in the performance of his duties be fully
protected in relying in good faith upon the books of account and other records
of this Corporation, or upon reports made to the Corporation by any of its
Officers, or by any independent certified public accountant, or by an appraiser
selected with reasonable care by the Board of Directors.


                        ARTICLE XII. AMENDMENT OF BYLAWS

Section 1.  By the Shareholders. The Bylaws may be amended, altered,
supplemented or repealed at any annual or special meeting of the Shareholders by
a majority vote of all of the shares entitled to vote.

Section 2.  By the Directors. The Board of Directors, by a majority vote, may
amend, alter, supplement and repeal the Bylaws. Any Bylaws or amendments to the
Bylaws made by the Board of Directors may be amended, altered, supplemented or
repealed by the Board of Directors or by the Shareholders.

<PAGE>   1
                                  Exhibit 12-A
                                   Page 1 of 6


                                                   BOOK  54 PAGE 1007
                                                               BOOK  17 PACE 715

                                                                    Filed
                                                                MAR 17 1993
                                                             IN THE OFFICE OF
                                                            SECRETARY OF STATE
                                                               WEST VIRGINIA


                            ARTICLES OF INCORPORATION

                                       OF

                          HAWG HAULING & DISPOSAL, INC.

      I. The undersigned agrees to become a corporation by the name of

                          HAWG HAULING & DISPOSAL, INC.

      II. The address of the principal Office of the Corporation will be located
at Route 1, BOX 84A, Buckhannon, Upshur County, West Virginia, 26201.

      III. The purpose or purposes for which the Corporation is formed are as
follows:

            1. To collect, gather, transport, save, treat, process, store, sell,
inject and dispose of water, brine, fluids and other waste products or discharge
generated in the search for or production of oil, gas, natural gasoline,
casing-head gas, condensate and related hydrocarbons; and to acquire, drill,
convert, operate, lease, sell, assign and/or plug and abandon waste disposal
wells for the injection and disposal of said water, brine, fluids and other
waste products or discharge.

            2. To engage in businesses and activities of all kinds without
restriction, at all places within the United States for every purpose and in
every manner including, but without limitation for itself as principal, agent,
joint venturer, partner, lessor, lessee, consignee, wholesaler, jobber,
retailer, factor, broker, distributor, dealer, franchise holder, and in every
other manner and capacity, under its own name and/or under a trade name or
names.

            3. To purchase, hold, use, sell, exchange, dispose of, improve,
lease, rent, mortgage and encumber real and
<PAGE>   2
                                  Exhibit 12-A
                                   Page 2 of 6

BOOK 54 PAGE 1008

     BOOK  17 PAGE 716

personal property of every kind and character.

            4. To borrow money and to make, accept, endorse, execute and issue
notes, bonds, debentures and other obligations, without limit, and to secure the
same; and to endorse, sell, discount, pledge, finance and turn to account in
every manner whatsoever the notes, contracts and obligations of others without
restrictions.

            5. To employ, hire and appoint corporations, firms and individuals
in any and all parts of the world to act as agents for the Corporation in such
capacity and on such conditions that may be determined from time to time by the
Board of Directors.

            6. To invest and deal with the funds of this Corporation in any
manner and to acquire by purchase or otherwise the stocks, bonds, debentures and
other securities and obligations of any government, state, municipality,
corporation, association or partnership, domestic or foreign, and, while owner
of such securities or obligations, to exercise all the rights, powers and
privileges of ownership, including, among other things, the right to vote
thereon for any and all purposes.

            7. To lend money to other persons, partnerships, associations and
corporations secured by a mortgage or other lien on real estate, or pledge or
security interest on personal property, or without security, but only to the
extent permitted a corporation under the laws of this State.

            8. To do and perform every other act and thing not inconsistent with
law which may at any time seen to the Board of Directors to be directly or
indirectly appropriate to promote, attain or exercise all of the objects,
purposes and powers set
<PAGE>   3
                                  Exhibit 12-A
                                   Page 3 of 3


                                                        BOOK 17 PAGE 717
                                                               BOOK 54 PAGE 1009

forth in this Agreement and conferred by law.

            9. The enumeration in this Agreement of specific objects, purposes
and powers shall not be deemed to limit in any manner the general powers of the
Corporation conferred by the laws of the State of West Virginia. Each object,
purpose and power specified in each clause of this Agreement shall be construed
as a wholly independent and separate object, purpose and power and shall not be
limited by reference to or inference from any other provision of these Articles
of incorporation.

      IV. Provisions for the regulation of the internal affairs of the
Corporation are;

            1. The Corporation shall indemnify each member of the Board of
Directors and each officer of the Corporation now or hereafter serving as such,
who was, is or is threatened to be made a party to any threatened, pending, or
completed action, suit or proceeding, whether civil, criminal, administrative,
or investigative (including an action by, or in the right of, the Corporation),
by reason of the fact that he is or was a member of the Board of Directors,
officer, or agent of the Corporation or is or was serving at the request of the
Corporation as a member of the Board of Directors, officer or agent of another
corporation, partnership, joint venture, trust or other enterprise.

            2. Said indemnification shall be against expenses (including
attorney's fees), judgments, fines, and amounts paid in settlement actually and
reasonably incurred by the aforementioned individuals in connection with such
action, suit or proceeding, including any appeal thereof, if they acted in good
faith and in a manner reasonably believed to be in, or not opposed to, the best
interest of the Corporation.
<PAGE>   4
                                  Exhibit 12-A
                                   Page 4 of 6


BOOK 54 PAGE 1010
BOOK 17 PAGE 718

            3. No indemnification shall be made in respect to any claim, issue,
or matter as to which such person shall have been adjudged in such action, suit
or proceeding to be liable for gross negligence or wilful misconduct in the
performance of his duties to the Corporation, except to the extent that the
court in which such action or suit was brought shall determine upon application
that, despite the adjudication of liability and in view of all the circumstances
of the case, such person is fairly and reasonably entitled to indemnity for such
expenses that such court shall deem proper. Indemnity with respect to any
criminal action or proceeding will be provided only when the member of the Board
of Directors or officer had no reasonable cause to believe his act was unlawful.

            4. The amount paid to any member of the Board of Directors, officer
or agent of the Corporation by way of indemnification shall not exceed the
actual, reasonable and necessary expenses incurred in connection with the matter
involved. The foregoing right of indemnification shall be in addition to, but
not exclusive of, any other right to which such member of the Board of Directors
or officer of the Corporation may otherwise be entitled by law.

      V. The amount of the total authorized capital stock of the Corporation
shall be One Hundred Thousand Dollars ($100,000.00) which shall be divided in
One Thousand (1,000) shares of the par value of One Hundred Dollars ($100.00)
each.

      VI. The full name and address of the incorporator and the number of shares
of stock subscribed for by him are as follows:
<PAGE>   5
                                  Exhibit 12-A
                                   Page 5 of 6


                                                        BOOK 54 PAGE 1011
                                                              BOOK   17 PAGE 719

<TABLE>
<CAPTION>
      NAME                          ADDRESS                     NO. OF SHARES
      ----                          -------                     -------------
<S>                           <C>                               <C>
Scott E. Wilson               P.0. BOX 1716                           10
                              Clarksburg, WV 26302-1716
</TABLE>

      VII. The existence of this Corporation is to be perpetual.

      VIII. The address of the initial registered office of the Corporation is
Route 1, Box 84A, Buckhannon, Upshur County, West Virginia, 26201, and the name
of its initial registered agent at such address is Richard R. Hoffman.

      IX. The number of directors constituting the initial Board of Directors of
the Corporation is three and the names and addresses of the persons who are to
serve as directors until the first annual meeting of the shareholders or until
their successor or successors are elected and shall qualify are:

<TABLE>
<CAPTION>
             NAME                          ADDRESS
             ----                          -------
<S>                                        <C>
       John L. Schwager                    200 West Main Street
                                           Clarksburg, WV 26301

       Richard R. Hoffman                  Route 1, Box 84A
                                           Buckhannon, WV 26201

       Bridget D. Furbee                   200 West Main Street
                                           Clarksburg, WV 26301
</TABLE>

      X. Notice or process shall be sent to Richard R. Hoffman, Route 1, Box
84A, Buckhannon, Upshur County, West Virginia, 26201.

      THE UNDERSIGNED, for the purpose of forming a corporation under the laws
of the State of West Virginia, does make and file this ARTICLES OF
INCORPORATION, and has accordingly hereunto set his hand and seal this 15th day
of March, 1993.

                                            /s/  Scott E.  Wilson         (SEAL)
                                            ------------------------------------
                                                 Scott E.  Wilson
<PAGE>   6
                                  Exhibit 12-A
                                   Page 6 of 6

          BOOK 54 PAGE 1012
     BOOK  17 PAGE 720

STATE OF WEST VIRGINIA    )
                          (    TO-WIT:
COUNTY OF HARRISON        )

            I, Judy M. Osborn , a Notary Public of the said County of Harrison,
do certify that Scott E. Wilson, whose name is signed to the writing above,
bearing date the 15th day of March, 1993, has this day acknowledged the same
before me in my said county.

            Given under my hand this 15th day of March, 1993.


[NOTARY PUBLIC SEAL]                 /s/ Judy M. Osborn
                                     ------------------------
                                      NOTARY PUBLIC
                                    
                                    March 24, 2002
                                    -------------------------


          This instrument was prepared by:

                WATERS, WARNER & HARRIS
                Scott E. Wilson
                701 Goff Building                            
                P. 0. Box 1716
                Clarksburg, West Virginia, 26302


[ STAMP]


                            STATE OF WEST VIRGINIA, County of Upshur, To-Wit:
[STAMP]                          I, Debbie Thacker Wilfong, Clerk of the County
                            Commission of said County, do hereby certify that 
                            the foregoing writing, with certificate thereto 
                            annexed, was this day produced to me in my office 
                            and duly admitted to record.
                                 Witness my hand,

                                                      /s/ Debbie Thacker Wilfong

                                                                          Clerk
                            ----------------------------------------------------



<PAGE>   1
                                  Exhibit 13-A
                                   Page 1 of 1


                  CERTIFICATE OF FORMATION OF ENERGYNET, L.L.C.


         This Certificate of Formation is being executed as of June 30, 1997,
for the purpose of forming a limited liability company pursuant to the Delaware
Limited Liability Company Act, 6 Del C. Sections  18-101, et seq.

         The undersigned, being duly authorized to execute and file this
Certificate of Formation, hereby certifies as follows:

         A. Name. The name of the limited liability company is EnergyNet, L.L.C.
(the "Company"). 

         B. Registered Office and Registered Agent. The Company's registered
office in the State of Delaware is located at 1209 Orange Street, Wilmington,
Delaware 19801. The registered agent of the Company for service of process at
such address is The Corporation Trust Company.

         C. Dissolution. The latest date on which the Company is to dissolve is
December 31, 2048.

         D. L.L.C. Management Committee. The Company has an L.L.C. Management
Committee and the business and affairs of the Company shall be managed by or
under the direction of the L.L.C. Management Committee. Unless otherwise
specified by the L.L.C. Management Committee, no member of the Company, in such
capacity or by reason of his, her or its status, as such, shall have any right
or authority to act for or to bind the Company.

         IN WITNESS WHEREOF, the undersigned has duly executed this Certificate
of Formation as of the day and year first above written.

                                /s/
                                -----------------------------------------
                                    Organizer
                                ENERGYNET, L.L.C.



<PAGE>   1

                                  Exhibit 16-A
                                   Page 1 of 6



                                                      CONSENT IN LIEU OF A
                                                      SPECIAL MEETING OF THE
                                                      BOARD OF DIRECTORS OF
                                                      COMMONWEALTH GAS
                                                      SERVICES, INC.


         The undersigned, being all of the members of the Board of Directors of
Commonwealth Gas Services, Inc. (the "Corporation"), hereby consent to and adopt
the following resolutions in lieu of action at a Special Meeting:

                          CHANGE OF CORPORATION'S NAME

         WHEREAS, the Board of Directors of the Corporation has determined that
it would be advisable to amend the Certificate of Incorporation of the
Corporation to change the name of the Corporation to make it consistent with its
parent corporation's name.

         NOW, THEREFORE, the undersigned, being all of the directors of the
Corporation, do unanimously agree as follows:

                  RESOLVED, that the Board of Directors of this Corporation
         hereby recommends and declares it advisable that the Certificate of
         Incorporation of this Corporation be amended to change the name of the
         Corporation to Columbia Gas of Virginia, Inc.

                  RESOLVED, FURTHER, that the foregoing amendment is advisable
         and its adoption is in the best interests of the Corporation and its
         stockholder and, to effectuate the foregoing, it is hereby directed
         that the foregoing amendment be considered at the next annual meeting
         of the stockholder unless earlier approved by written consent in
         accordance with Section 13.1-657 of the Code of Virginia 1950, as
         amended; and

                  RESOLVED, FURTHER, that at any time prior to the filing of the
         foregoing amendment to the Corporation's Certificate of Incorporation
         with the State Corporation Commission of the Commonwealth of Virginia,
         notwithstanding authorization of such amendment by the stockholder of
         the Corporation, the Board of Directors of the Corporation may abandon
         such amendment without further action by the stockholder of the
         Corporation; and

                  RESOLVED, FURTHER, that after approval of such amendment by
         the stockholder of the Corporation, the officers of the Corporation be,
         and they hereby are, authorized and directed to execute, acknowledge
         and file with the State Corporation Commission of the Commonwealth of
         Virginia Articles of
<PAGE>   2
                                  Exhibit 16-A
                                   Page 2 of 6

Attest:


/s/ Andrew J. Sonderman
- --------------------------------------
           Secretary
<PAGE>   3
                                  Exhibit 16-A
                                   Page 3 of 6


         Amendment to evidence the foregoing amendment to the Corporation's
         Certificate of Incorporation; and

                  RESOLVED, FURTHER, that the officers of the Corporation be,
         and they hereby are, authorized and directed from time to time to
         execute any and all documents and to take any and all other actions
         necessary or appropriate to carry forward the foregoing resolutions.

                                 EFFECTIVE DATE

                  RESOLVED, that the actions specified in the foregoing
         resolutions be, and they hereby are, made effective on and as of the
         effective date of this Consent.

         IN WITNESS WHEREOF, the foregoing constitutes the actions of the Board
of Directors of the Corporation, effective as of the 16th day of January, 1998.

         Date signed:

         ------------                             -----------------------------
                                                  J. Bennett Johnston


         ------------                             -----------------------------
                                                  William E. Lavery

                                                  /s/ Michael W. O'Donnell
         ------------                             -----------------------------
                                                  Michael W. O'Donnell

                                                  /s/ Oliver G. Richard III
         ------------                             -----------------------------
                                                  Oliver G. Richard III

                                                  /s/ Andrew J. Sonderman
         ------------                             -----------------------------
                                                  Andrew J. Sonderman

                                             
         ------------                             -----------------------------
                                                  James R. Thomas, II

                                                  /s/ Anthony Trubisz, Jr.
         ------------                             -----------------------------
                                                  Anthony Trubisz, Jr.

                                                  /s/ Robert B. Wemyss
         ------------                             -----------------------------
                                                  Robert B. Wemyss
<PAGE>   4
                                  Exhibit 16-A
                                   Page 4 of 6


         Amendment to evidence the foregoing amendment to the Corporation's
         Certificate of Incorporation; and

                  RESOLVED, FURTHER, that the officers of the Corporation be,
         and they hereby are, authorized and directed from time to time to
         execute any and all documents and to take any and all other actions
         necessary or appropriate to carry forward the foregoing resolutions.

                                 EFFECTIVE DATE

                  RESOLVED, that the actions specified in the foregoing
         resolutions be, and they hereby are, made effective on and as of the
         effective date of this Consent.

         IN WITNESS WHEREOF, the foregoing constitutes the actions of the Board
of Directors of the Corporation, effective as of the 16th day of January, 1998.

         Date signed:

         Jan 12, 1998                             /s/ J. Bennett Johnston
         ------------                             -----------------------------
                                                  J. Bennett Johnston

         ------------                             -----------------------------
                                                  William E. Lavery


         ------------                             -----------------------------
                                                  Michael W. O'Donnell


         ------------                             -----------------------------
                                                  Oliver G. Richard III


         ------------                             -----------------------------
                                                  Andrew J. Sonderman


         ------------                             -----------------------------
                                                  James R. Thomas, II


         ------------                             -----------------------------
                                                  Anthony Trubisz, Jr.

                                                  
         ------------                             -----------------------------
                                                  Robert B. Wemyss
<PAGE>   5
                                  Exhibit 16-A
                                   Page 5 of 6


         Amendment to evidence the foregoing amendment to the Corporation's
         Certificate of Incorporation; and

                  RESOLVED, FURTHER, that the officers of the Corporation be,
         and they hereby are, authorized and directed from time to time to
         execute any and all documents and to take any and all other actions
         necessary or appropriate to carry forward the foregoing resolutions.

                                 EFFECTIVE DATE

                  RESOLVED, that the actions specified in the foregoing
         resolutions be, and they hereby are, made effective on and as of the
         effective date of this Consent.

         IN WITNESS WHEREOF, the foregoing constitutes the actions of the Board
of Directors of the Corporation, effective as of the 16th day of January, 1998.

         Date signed:


         ------------                             -----------------------------
                                                  J. Bennett Johnson

                                                  /s/ William E. Lavery
         ------------                             -----------------------------
                                                  William E. Lavery


         ------------                             -----------------------------
                                                  Michael W. O'Donnell


         ------------                             -----------------------------
                                                  Oliver G. Richard III


         ------------                             -----------------------------
                                                  Andrew J. Sonderman


         ------------                             -----------------------------
                                                  James R. Thomas, II


         ------------                             -----------------------------
                                                  Anthony Trubisz, Jr.

                                                  
         ------------                             -----------------------------
                                                  Robert B. Wemyss




<PAGE>   1

                                  Exhibit 18-A
                                   Page 1 of 3


                            CERTIFICATE OF AMENDMENT
                                       OF
                      RESTATED CERTIFICATE OF INCORPORATION
                                       OF
                          TRISTAR VENTURES CORPORATION



         TRISTAR VENTURES CORPORATION, a corporation organized and existing
under and by virtue of the General Corporation Law of the State OF Delaware (the
"Corporation"),

         DOES HEREBY CERTIFY:

        FIRST: That the Board of Directors of the Corporation (the "Board"), BY
unanimous written consent dated as of June 1, 1997, adopted resolutions
proposing and declaring advisable an amendment to part FOURTH of the Restated
Certificate of Incorporation of the Corporation as follows:

                  RESOLVED, that the Board of Directors finds advisable and
         hereby proposes to the stockholders of the Corporation that part FOURTH
         of the Restated Certificate of Incorporation of the Corporation be
         amended in its entirety to read as follows:

                  FOURTH. The total number of shares of stock which the
                  corporation shall have authority to issue is Three Thousand
                  (3,000) and the par value of each of such shares is
                  Twenty-Five Dollars ($25.00) amounting in the aggregate to
                  Seventy Five Thousand Dollars ($75,000).

                  RESOLVED, FURTHER, that effective at the time of the filing of
         the Certificate of Amendment setting forth this amendment to the
         Restated Certificate of Incorporation (the "Effective Time"), each
         share of the common stock of the Corporation, par value $25.00 per
         share, issued and outstanding or held in treasury immediately prior to
         the Effective Time shall, without the exchange of stock certificates or
         the taking of any other action on the part of the Corporation or the
         respective holders thereof, be reclassified into one three hundred
         thirty three and one third (1/333 1/2) of a share of common stock of
         the Corporation, par value $25.00 per share, and each stock certificate
         that, immediately prior to the Effective Time, represented shares of
         such common stock shall, from and after the Effective Time, and without
         the necessity of presenting the same for exchange, represent one three
         hundred thirty three and one third (1/333 1/3) of
<PAGE>   2
                                  Exhibit 18-A
                                   Page 2 of 3



           the number of shares designated on such stock certificate, provided,
           however, that after the Effective Time, upon the surrender by any
           stockholder of certificates bearing the number of shares of the
           Corporation's common stock represented by such certificate prior to
           the Effective Time, the officers of the Corporation be, and they
           hereby are, authorized and directed to issue in exchange therefor one
           or more new certificates bearing the number of reclassified shares of
           the Corporation's common stock;

                    RESOLVED, FURTHER, that the foregoing amendment is advisable
           and its adoption is in the best interests of the Corporation and its
           stockholders and, to effectuate the foregoing, it is hereby directed
           that the foregoing amendment be considered at the next annual meeting
           of the stockholders, unless earlier approved by written consent in
           accordance with Section 228 of the Delaware General Corporation Law;

                    RESOLVED, FURTHER, that after approval of such amendment by
           the stockholders of the Corporation and receipt of all necessary
           regulatory approvals, the officers of the Corporation be, and they
           hereby are, authorized and directed to execute, acknowledge and file
           with the Secretary of State of the State of Delaware a Certificate of
           Amendment to evidence the foregoing amendment to the Corporation's
           Restated Certificate of Incorporation; and

                    RESOLVED, FURTHER, that the officers of the Corporation be,
           and they hereby are, authorized and directed from time to time to
           execute any and all documents and to take any and all other actions
           necessary or appropriate to carry forward the foregoing resolutions.

         SECOND: That thereafter, by resolution, the Board declared said
amendment to be advisable and its adoption to be in the best interests of the
Corporation and its stockholders and, to effectuate the foregoing, the Board
directed that said amendment be considered at the next annual meeting of the
stockholders, unless earlier approved by written consent in accordance with
Section 228 of the Delaware General Corporation Law.

         THIRD: That in lieu of a meeting and vote of the stockholders, The
Columbia Gas System, Inc., being the holder of the outstanding stock of the
Corporation having not less than the minimum number of votes that would be
necessary to authorize or take action at a meeting at which all shares entitled
to vote thereon were present and voted, approved said amendment by written
consent dated as of
<PAGE>   3
                                  Exhibit 18-A
                                   Page 3 of 3



January 15, 1997, in accordance with the provisions of Section 228(a) of the
General Corporation Laws of the State of Delaware.

         FOURTH: That said amendment was duly adopted in accordance with the
applicable provisions of Sections 242 and 228 of the General Corporation Law of
the State of Delaware.

         IN WITNESS WHEREOF, TriStar Ventures Corporation has caused this
Certificate to be signed by Dr. Michael J. Gluckman, its President and Chief
Executive Officer, and attested by Mr. Tejinder S. Bindra, its Secretary, as of
this 8th day of July, 1997.


                                      TRISTAR VENTURES CORPORATION




                                      By: /s/ Michael J. Gluckman
                                         ------------------------------------
                                         President and Chief Executive Officer




ATTEST:
/s/ Tejinder S. Bindra
- -----------------------------------
         Secretary




<PAGE>   1
                                                                       Exhibit D

                                                                          1 of 5


                        AGREEMENT FOR FILING CONSOLIDATED
                        FEDERAL INCOME TAX RETURN AND FOR
                     ALLOCATION OF LIABILITIES AND BENEFITS
                         ARISING FROM SUCH CONSOLIDATED
                               TAX RETURN BETWEEN
                              COLUMBIA ENERGY GROUP
                            AND SUBSIDIARY COMPANIES

      The following members of Columbia Energy Group, affiliated group of
corporations as described in Section 1504 of the Internal Revenue Code hereby
authorize their common parent corporation, Columbia Energy Group, to make and
file a consolidated federal income tax return on behalf of the group.

<TABLE>
<CAPTION>
                                                                    Federal
                                                                    Employer
                                                                Identification
Name and Address                                                    Number
- ----------------                                                    ------
<S>                                                            <C>
COLUMBIA ENERGY GROUP      .  . . . . . . . . . . . . . .         13-1594808
COLUMBIA ATLANTIC TRADING CORPORATION  . . . . . . . . . .        51-0122560
COLUMBIA ENERGY GROUP SERVICE CORPORATION  . . . . . . . .        13-1596081
COLUMBIA LNG CORPORATION . . . . . . . . . . . . . . . . .        31-0808682
 CLNG CORPORATION  . . . . . . . . . . . . . . . . . . . .        51-0363075
COLUMBIA INSURANCE CORPORATION, LTD  . . . . . . . . . . .        54-1846993
TRISTAR CAPITAL CORPORATION  . . . . . . . . . . . . . . .        51-0331685
 TRISTAR GAS TECHNOLOGIES, INC.  . . . . . . . . . . . . .        51-0331689
COLUMBIA NETWORK SERVICES CORPORATION. . . . . . . . . . .        55-0752155
 CNS MICROWAVE, INC. . . . . . . . . . . . . . . . . . . .        55-0753507
    12355 SUNRISE VALLEY DRIVE, SUITE 300
    RESTON, VA 20191-3420

COLUMBIA ELECTRIC CORPORATION . . . . . . . . . . . . . . .       55-0647910
 TRISTAR PEDRICK LIMITED CORPORATION . . . . . . . . . . .        51-0314565
 TRISTAR PEDRICK GENERAL CORPORATION . . . . . . . . . . .        51-0314105
 TRISTAR FUEL CELLS CORPORATION  . . . . . . . . . . . . .        51-0324211
 TRISTAR BINGHAMTON GENERAL CORPORATION  . . . . . . . . .        51-0324212
 TRISTAR BINGHAMTON LIMITED CORPORATION  . . . . . . . . .        51-0324213
 TRISTAR GEORGETOWN GENERAL CORPORATION  . . . . . . . . .        51-0324214
 TRISTAR GEORGETOWN LIMITED CORPORATION  . . . . . . . . .        51-0324215
 TRISTAR VINELAND GENERAL CORPORATION  . . . . . . . . . .        51-0324217
 TRISTAR VINELAND LIMITED CORPORATION  . . . . . . . . . .        51-0324218
 TRISTAR RUMFORD LIMITED CORPORATION . . . . . . . . . . .        51-0324219
 TVC NINE CORPORATION  . . . . . . . . . . . . . . . . . .        51-0324220
 TVC TEN CORPORATION . . . . . . . . . . . . . . . . . . .        51-0324221
     205 VAN BUREN STREET, SUITE 120
     HERNDON, VA 20170

COLUMBIA GAS OF KENTUCKY, INC.   . . . . . . . . . . . . .        55-0139565
</TABLE>
<PAGE>   2
                                                                          2 of 5
<TABLE>
<S>                                                            <C>
COLUMBIA GAS OF MARYLAND, INC.   . . . . . . . . . . . . .        25-1093185
COLUMBIA GAS OF OHIO, INC. . . . . . . . . . . . . . . . .        31-0673990
COLUMBIA GAS OF PENNSYLVANIA, INC. . . . . . . . . . . . .        25-1100252
COLUMBIA GAS OF VIRGINIA, INC. . . . . . . . . . . . . . .        54-0344210
    200 CIVIC CENTER DRIVE
    COLUMBUS, OH  43215

COLUMBIA GULF TRANSMISSION COMPANY . . . . . . . . . . . .        74-1321143
COLUMBIA GAS TRANSMISSION CORPORATION  . . . . . . . . . .        31-0802435
    12801 FAIR LAKES PARKWAY
    FAIRFAX, VA  22030-0146

COMMONWEALTH PROPANE, INC.   . . . . . . . . . . . . . . .        54-0146483
COLUMBIA PROPANE CORPORATION . . . . . . . . . . . . . . .        61-0565214
    9200 ARBORETUM PARKWAY, SUITE 140
    RICHMOND, VA  23236

COLUMBIA NATURAL RESOURCES, INC.   . . . . . . . . . . . .        52-1383102
 ALAMCO, INC.  . . . . . . . . . . . . . . . . . . . . . .        55-0615701
 ALAMCO DELAWARE, INC. . . . . . . . . . . . . . . . . . .        51-0356489
 HAWG HAULING & DISPOSAL, INC. . . . . . . . . . . . . . .        55-0723936
    900 PENNSYLVANIA AVENUE
    CHARLESTON, WV  25302

COLUMBIA ENERGY SERVICES CORPORATION   . . . . . . . . . .        61-0573109
 COLUMBIA ENERGY MARKETING CORPORATION . . . . . . . . . .        25-1770943
 COLUMBIA ENERGY POWER MARKETING CORPORATION . . . . . . .        76-0553975
 COLUMBIA SERVICE PARTNERS, INC. . . . . . . . . . . . . .        25-1787891
    121 HILLPOINTE DRIVE, SUITE 100
    CANONSBURG, PA 15317
</TABLE>

The parties hereby agree to allocate liabilities and benefits arising from such
consolidated return in the manner prescribed below which is consistent with Rule
45(c) of the Public Utility Holding Company Act of 1935:

(1)   Definitions:

      "Consolidated tax" is the aggregate current U.S. federal income tax
      liability for a tax year, being the tax shown on the consolidated federal
      income tax return and any adjustments thereto which are thereafter
      determined. If, because of a consolidated net operating loss, investment
      tax credit, carrybacks, etc., a refund is due, the consolidated tax for
      the current year will be that refund.

      "Separate return tax" is the tax on the corporate taxable income or
      capital of a company including the effect of any particular feature of the
      tax law, differences in tax rates, investment tax credits, etc.,
      applicable to it. Separate return tax may be either positive or negative.
<PAGE>   3
(2)   The consolidated tax shall be apportioned among the members of the group
      utilizing the "separate return tax" method in the manner prescribed below:

      (a)   Intercompany eliminations recorded by consolidation entries which
            affect the consolidated tax will be assigned to the appropriate
            member necessitating the intercompany elimination for the purpose of
            computing separate return tax.

      (b)   With the exception of the parent corporation, each member of the
            group having negative separate return tax will receive current
            payment in an amount equal to such negative separate return tax if
            that member has sufficient taxable income in the carryback period to
            utilize its negative separate return tax. A member of the group that
            cannot utilize its negative separate return tax on a stand alone
            basis either in the current period or the permitted carryback period
            will not receive payment for their negative separate return tax
            until that member generates sufficient taxable income to utilize its
            losses. The benefits of the negative separate return tax not
            utilized currently by the member will serve to reduce the tax
            payment obligation of the positive separate return tax members. The
            positive separate return tax member will record a liability to the
            parent corporation for this reduction. The parent corporation will
            record a liability for the negative separate return tax to the loss
            member. Members with a negative separate return tax will not
            participate in the allocation of the parent corporation loss, if
            applicable, for that year.

            If, because of carryback or other restrictions, the aggregate of all
            negative separate return taxes is not entirely usable in the current
            year"s return, the portion which is usable will be apportioned among
            the members having negative separate return tax in proportion
            thereto.

      (c)   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. All other
            parent corporation negative separate return tax will be allocated
            currently to positive separate return tax members on the ratio of
            their positive separate return tax to the total positive separate
            return tax.

      (d)   Each member of the group, after intercompany eliminations, having
            positive separate return tax will pay an amount equal to its
            proportionate share of the consolidated tax liability to members
            having negative separate return tax, for which the separate return
            loss was utilized to offset consolidated taxable income,
<PAGE>   4
                                                                          4 of 5

            based on the ratio of its separate return tax to the total of the
            separate return taxes of members having positive separate return
            tax, assuming such loss companies meet the carryback requirement of
            sub-section (b) above.

(3)   Carryover and other rights, if any, accrued under past regulations and
      orders for which a member company has not been paid shall be accounted for
      as follows: Each such member generating such benefits shall receive
      payment to the earliest year in which statutory carryover periods have not
      expired. Payment will be received, following execution of this agreement,
      from the companies which benefited from the prior deductions in the same
      ratios initially used to distribute such benefits.

(4)   In the event the consolidated return reflects a net operating loss or
      excess investment tax credit and cannot be totally carried back, the tax
      benefit of such net operating loss or excess shall be allowed as a
      carryover to future years. In the event they cannot be fully utilized on a
      consolidated basis, a proportionate allocation under Section (2) will be
      made. If and when the tax benefits are realizable on a consolidated basis
      in a subsequent year, such tax benefits shall be allocated to the members
      originally denied such benefits in the year the items were generated.

(5)   In the event the consolidated tax is subsequently materially revised by
      amended returns, interim payments or refunds, or, in any event, by a final
      determination, such changes shall be allocated in the same manner as
      though the adjustments on which they are based had formed part of the
      original consolidated return. The tax effect of negotiated adjustments
      which do not include an item-by-item modification of the return shall be
      allocated in accordance with Section (2)(d) of this agreement or,
      considering all the facts and circumstances, under such other method as
      may be determined to be more fair and equitable.

(6)   No subsidiary company, as a result of the method of allocation described
      herein, shall be required to pay more tax than its separate return tax as
      defined in Section (1).

(7)   Any current state income tax liability or benefit associated with a state
      income tax return or franchise tax return involving more than one member
      shall be allocated to such subsidiaries doing business in such state based
      on their separate return liabilities and other principles set forth
      herein.

      No member is to be allocated a state tax which is greater than its state
      tax liability had it filed a separate return, including the
      carryback/carryforward period . All available credits are to be allocated
      to the member generating the credit prior to the allocation of the System
      tax liability if available on a separate return basis.

      Similar to section 2(b) for federal income taxes, a member of the group
      that cannot utilize its negative separate return tax on a stand alone
      basis either in the current period or
<PAGE>   5
                                                                          5 of 5

      permitted carryback period will not receive payment for their negative
      separate return tax until that member generates sufficient taxable income
      to utilize its losses.

      In the event the consolidated state income tax liability for any year is
      redetermined subsequent to the allocation of the consolidated tax
      liability reported for that tax year, the redetermined tax liability shall
      be allocated pursuant to this Agreement as if the adjustments and
      modifications related to this determination had been a part of the
      original return. Any interest or penalties associated with underpayment or
      overpayment of tax shall be allocated based on the allocation of the
      underlying underpayment or overpayment of tax.

(8)   This agreement shall apply to the consolidated federal and state income
      tax returns to be filed for the calendar year 1996 and all subsequent
      years unless subsequently amended. In the case of unexpected events,
      including changes in the tax laws which may require modifications to the
      agreement, amendment to this agreement shall be conditioned on approval by
      the Securities and Exchange Commission.


      Pursuant to the requirements of the Public Utility Holding Company Act of
      1935, the undersigned, duly authorized, have signed this agreement on
      behalf of the company(s) indicated.


                                            By:________________________________


DATE:    December 31, 1997

WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>



<ARTICLE> OPUR1
<SUBSIDIARY>
   <NUMBER> 1
   <NAME> CEG
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               DEC-31-1997
<BOOK-VALUE>                                  PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                    3,887,400
<OTHER-PROPERTY-AND-INVEST>                    549,400
<TOTAL-CURRENT-ASSETS>                       1,707,700
<TOTAL-DEFERRED-CHARGES>                        66,900
<OTHER-ASSETS>                                 400,900
<TOTAL-ASSETS>                               6,612,300
<COMMON>                                       554,900
<CAPITAL-SURPLUS-PAID-IN>                      754,200
<RETAINED-EARNINGS>                            482,700
<TOTAL-COMMON-STOCKHOLDERS-EQ>               1,790,700
                                0
                                          0
<LONG-TERM-DEBT-NET>                         2,003,500
<SHORT-TERM-NOTES>                                   0
<LONG-TERM-NOTES-PAYABLE>                            0
<COMMERCIAL-PAPER-OBLIGATIONS>                       0
<LONG-TERM-DEBT-CURRENT-PORT>                      500
                            0
<CAPITAL-LEASE-OBLIGATIONS>                      2,700
<LEASES-CURRENT>                                     0
<OTHER-ITEMS-CAPITAL-AND-LIAB>               2,818,100
<TOT-CAPITALIZATION-AND-LIAB>                6,612,300
<GROSS-OPERATING-REVENUE>                    5,053,600
<INCOME-TAX-EXPENSE>                           118,900
<OTHER-OPERATING-EXPENSES>                   4,544,200
<TOTAL-OPERATING-EXPENSES>                   4,544,200
<OPERATING-INCOME-LOSS>                        509,400
<OTHER-INCOME-NET>                              40,400
<INCOME-BEFORE-INTEREST-EXPEN>                 549,800
<TOTAL-INTEREST-EXPENSE>                       157,600
<NET-INCOME>                                   273,300
                          0
<EARNINGS-AVAILABLE-FOR-COMM>                  273,300
<COMMON-STOCK-DIVIDENDS>                        49,900
<TOTAL-INTEREST-ON-BONDS>                            0
<CASH-FLOW-OPERATIONS>                         468,200
<EPS-PRIMARY>                                     4.93
<EPS-DILUTED>                                     4.90
        


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>


<ARTICLE> OPUR1
<SUBSIDIARY>
   <NUMBER> 1
   <NAME> CKY
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               DEC-31-1997
<BOOK-VALUE>                                  PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                      115,200
<OTHER-PROPERTY-AND-INVEST>                          0
<TOTAL-CURRENT-ASSETS>                          56,800
<TOTAL-DEFERRED-CHARGES>                           900
<OTHER-ASSETS>                                   7,900
<TOTAL-ASSETS>                                 180,800
<COMMON>                                        23,800
<CAPITAL-SURPLUS-PAID-IN>                          200
<RETAINED-EARNINGS>                             42,700
<TOTAL-COMMON-STOCKHOLDERS-EQ>                  66,700
                                0
                                          0
<LONG-TERM-DEBT-NET>                               200
<SHORT-TERM-NOTES>                                   0
<LONG-TERM-NOTES-PAYABLE>                            0
<COMMERCIAL-PAPER-OBLIGATIONS>                       0
<LONG-TERM-DEBT-CURRENT-PORT>                        0
                            0
<CAPITAL-LEASE-OBLIGATIONS>                        200
<LEASES-CURRENT>                                     0
<OTHER-ITEMS-CAPITAL-AND-LIAB>                 113,900
<TOT-CAPITALIZATION-AND-LIAB>                  180,800
<GROSS-OPERATING-REVENUE>                      156,200
<INCOME-TAX-EXPENSE>                             7,000
<OTHER-OPERATING-EXPENSES>                     133,100
<TOTAL-OPERATING-EXPENSES>                     133,100
<OPERATING-INCOME-LOSS>                         23,100
<OTHER-INCOME-NET>                                 100
<INCOME-BEFORE-INTEREST-EXPEN>                  23,200
<TOTAL-INTEREST-EXPENSE>                         4,600
<NET-INCOME>                                    11,600
                          0
<EARNINGS-AVAILABLE-FOR-COMM>                   11,600
<COMMON-STOCK-DIVIDENDS>                             0
<TOTAL-INTEREST-ON-BONDS>                            0
<CASH-FLOW-OPERATIONS>                          17,800
<EPS-PRIMARY>                                        0
<EPS-DILUTED>                                        0
        


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>


<ARTICLE> OPUR1
<SUBSIDIARY>
   <NUMBER> 1
   <NAME> COH
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               DEC-31-1997
<BOOK-VALUE>                                  PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                      755,900
<OTHER-PROPERTY-AND-INVEST>                          0
<TOTAL-CURRENT-ASSETS>                         624,000
<TOTAL-DEFERRED-CHARGES>                        12,600
<OTHER-ASSETS>                                 116,900
<TOTAL-ASSETS>                               1,509,400
<COMMON>                                       119,300
<CAPITAL-SURPLUS-PAID-IN>                            0
<RETAINED-EARNINGS>                            303,200
<TOTAL-COMMON-STOCKHOLDERS-EQ>                 422,500
                                0
                                          0
<LONG-TERM-DEBT-NET>                             1,000
<SHORT-TERM-NOTES>                                   0
<LONG-TERM-NOTES-PAYABLE>                            0
<COMMERCIAL-PAPER-OBLIGATIONS>                       0
<LONG-TERM-DEBT-CURRENT-PORT>                      100
                            0
<CAPITAL-LEASE-OBLIGATIONS>                      1,000
<LEASES-CURRENT>                                     0
<OTHER-ITEMS-CAPITAL-AND-LIAB>               1,085,900
<TOT-CAPITALIZATION-AND-LIAB>                1,509,400
<GROSS-OPERATING-REVENUE>                    1,425,800
<INCOME-TAX-EXPENSE>                            29,300
<OTHER-OPERATING-EXPENSES>                   1,315,800
<TOTAL-OPERATING-EXPENSES>                   1,315,800
<OPERATING-INCOME-LOSS>                        110,000
<OTHER-INCOME-NET>                                 700
<INCOME-BEFORE-INTEREST-EXPEN>                 110,700
<TOTAL-INTEREST-EXPENSE>                        29,000
<NET-INCOME>                                    52,400
                          0
<EARNINGS-AVAILABLE-FOR-COMM>                   52,400
<COMMON-STOCK-DIVIDENDS>                             0
<TOTAL-INTEREST-ON-BONDS>                            0
<CASH-FLOW-OPERATIONS>                         134,600
<EPS-PRIMARY>                                        0
<EPS-DILUTED>                                        0
        

</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>


<ARTICLE> OPUR1
<SUBSIDIARY>
   <NUMBER> 1
   <NAME> CMD
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               DEC-31-1997
<BOOK-VALUE>                                  PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                       43,500
<OTHER-PROPERTY-AND-INVEST>                          0
<TOTAL-CURRENT-ASSETS>                          14,300
<TOTAL-DEFERRED-CHARGES>                             0
<OTHER-ASSETS>                                   3,300
<TOTAL-ASSETS>                                  61,100
<COMMON>                                           100
<CAPITAL-SURPLUS-PAID-IN>                       10,000
<RETAINED-EARNINGS>                             12,300
<TOTAL-COMMON-STOCKHOLDERS-EQ>                  22,400
                                0
                                          0
<LONG-TERM-DEBT-NET>                                 0
<SHORT-TERM-NOTES>                                   0
<LONG-TERM-NOTES-PAYABLE>                            0
<COMMERCIAL-PAPER-OBLIGATIONS>                       0
<LONG-TERM-DEBT-CURRENT-PORT>                        0
                            0
<CAPITAL-LEASE-OBLIGATIONS>                          0
<LEASES-CURRENT>                                     0
<OTHER-ITEMS-CAPITAL-AND-LIAB>                  38,700
<TOT-CAPITALIZATION-AND-LIAB>                   61,100
<GROSS-OPERATING-REVENUE>                       53,100
<INCOME-TAX-EXPENSE>                             1,400
<OTHER-OPERATING-EXPENSES>                      47,300
<TOTAL-OPERATING-EXPENSES>                      47,300
<OPERATING-INCOME-LOSS>                          5,800
<OTHER-INCOME-NET>                                   0
<INCOME-BEFORE-INTEREST-EXPEN>                   5,800
<TOTAL-INTEREST-EXPENSE>                         1,400
<NET-INCOME>                                     3,000
                          0
<EARNINGS-AVAILABLE-FOR-COMM>                    3,000
<COMMON-STOCK-DIVIDENDS>                             0
<TOTAL-INTEREST-ON-BONDS>                            0
<CASH-FLOW-OPERATIONS>                           7,600
<EPS-PRIMARY>                                        0
<EPS-DILUTED>                                        0
        

</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>


<ARTICLE> OPUR1
<SUBSIDIARY>
   <NUMBER> 1
   <NAME> CPA
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               DEC-31-1997
<BOOK-VALUE>                                  PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                      381,500
<OTHER-PROPERTY-AND-INVEST>                          0
<TOTAL-CURRENT-ASSETS>                         183,700
<TOTAL-DEFERRED-CHARGES>                         1,100
<OTHER-ASSETS>                                  71,800
<TOTAL-ASSETS>                                 638,100
<COMMON>                                        85,100
<CAPITAL-SURPLUS-PAID-IN>                            0
<RETAINED-EARNINGS>                            131,000
<TOTAL-COMMON-STOCKHOLDERS-EQ>                 216,100
                                0
                                          0
<LONG-TERM-DEBT-NET>                               400
<SHORT-TERM-NOTES>                                   0
<LONG-TERM-NOTES-PAYABLE>                            0
<COMMERCIAL-PAPER-OBLIGATIONS>                       0
<LONG-TERM-DEBT-CURRENT-PORT>                        0
                            0
<CAPITAL-LEASE-OBLIGATIONS>                        400
<LEASES-CURRENT>                                     0
<OTHER-ITEMS-CAPITAL-AND-LIAB>                 421,600
<TOT-CAPITALIZATION-AND-LIAB>                  638,100
<GROSS-OPERATING-REVENUE>                      463,200
<INCOME-TAX-EXPENSE>                            15,300
<OTHER-OPERATING-EXPENSES>                     403,900
<TOTAL-OPERATING-EXPENSES>                     403,900
<OPERATING-INCOME-LOSS>                         59,300
<OTHER-INCOME-NET>                                   0
<INCOME-BEFORE-INTEREST-EXPEN>                  59,300
<TOTAL-INTEREST-EXPENSE>                        13,400
<NET-INCOME>                                    30,600
                          0
<EARNINGS-AVAILABLE-FOR-COMM>                   30,600
<COMMON-STOCK-DIVIDENDS>                             0
<TOTAL-INTEREST-ON-BONDS>                            0
<CASH-FLOW-OPERATIONS>                          41,700
<EPS-PRIMARY>                                        0
<EPS-DILUTED>                                        0
        

</TABLE>

<TABLE> <S> <C>


<ARTICLE> OPUR1
<SUBSIDIARY>
   <NUMBER> 1
   <NAME> COS
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               DEC-31-1997
<BOOK-VALUE>                                  PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                      274,200
<OTHER-PROPERTY-AND-INVEST>                          0
<TOTAL-CURRENT-ASSETS>                          91,300
<TOTAL-DEFERRED-CHARGES>                         1,700
<OTHER-ASSETS>                                  10,000
<TOTAL-ASSETS>                                 377,200
<COMMON>                                        65,300
<CAPITAL-SURPLUS-PAID-IN>                        3,000
<RETAINED-EARNINGS>                             73,500
<TOTAL-COMMON-STOCKHOLDERS-EQ>                 141,800
                                0
                                          0
<LONG-TERM-DEBT-NET>                               700
<SHORT-TERM-NOTES>                                   0
<LONG-TERM-NOTES-PAYABLE>                            0
<COMMERCIAL-PAPER-OBLIGATIONS>                       0
<LONG-TERM-DEBT-CURRENT-PORT>                      200
                            0
<CAPITAL-LEASE-OBLIGATIONS>                          0
<LEASES-CURRENT>                                     0
<OTHER-ITEMS-CAPITAL-AND-LIAB>                 234,700
<TOT-CAPITALIZATION-AND-LIAB>                  377,200
<GROSS-OPERATING-REVENUE>                      198,000
<INCOME-TAX-EXPENSE>                             5,300
<OTHER-OPERATING-EXPENSES>                     172,000
<TOTAL-OPERATING-EXPENSES>                     172,000
<OPERATING-INCOME-LOSS>                         26,000
<OTHER-INCOME-NET>                                 300
<INCOME-BEFORE-INTEREST-EXPEN>                  26,300
<TOTAL-INTEREST-EXPENSE>                         8,900
<NET-INCOME>                                    12,100
                          0
<EARNINGS-AVAILABLE-FOR-COMM>                   12,100
<COMMON-STOCK-DIVIDENDS>                             0
<TOTAL-INTEREST-ON-BONDS>                            0
<CASH-FLOW-OPERATIONS>                          35,000
<EPS-PRIMARY>                                        0
<EPS-DILUTED>                                        0
        

</TABLE>


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