COLUMBIA ENERGY GROUP
10-Q, 1998-08-14
NATURAL GAS TRANSMISISON & DISTRIBUTION
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<PAGE>   1

                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549


                                    FORM 10-Q


 [X]            QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

                      For the Quarterly period ended JUNE 30, 1998
                                                     -------------

 [ ]            TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

                 For the Transition period from        to
                                                ------    ------

                          Commission file number 1-1098
                                                 ------


                              COLUMBIA ENERGY GROUP
             ------------------------------------------------------
             (Exact Name of Registrant as Specified in its Charter)


                            Delaware                       13-1594808
                ----------------------------------------------------------
                (State or other jurisdiction of           (IRS Employer
                 incorporation or organization)        Identification No.)

             13880 Dulles Corner Lane, Herndon, VA            20171-4600
            ------------------------------------------------------------
            (Address of principal executive offices)     (Zip Code)



        Registrant's telephone number, including area code (703) 561-6000
                                                           --------------       


        Indicate by check mark whether the registrant: (1) has filed all
reports required to be filed by Section 13 or 15(d) of the Securities Exchange
Act of 1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days.  Yes  X      No
                                               ---        ---

        Indicate the number of shares outstanding of each of the issuer's
classes of common stock, as of the latest practicable date:  Common Stock, $10
Par Value: 83,371,109 shares outstanding at June 30, 1998.


<PAGE>   2




                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                           FORM 10-Q QUARTERLY REPORT
                       FOR THE QUARTER ENDED JUNE 30, 1998

                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                                            Page
                                                                                                            ----
<S>                <C>                                                                                     <C> 
PART I              FINANCIAL INFORMATION
- ------              ---------------------
Item 1              Financial Statements

                        Statements of Consolidated Income                                                     3

                        Condensed Consolidated Balance Sheets                                                 4

                        Consolidated Statements of Cash Flows                                                 6

                        Consolidated Statements of Common Stock Equity                                        7

                        Notes                                                                                 8


Item 2              Management's Discussion and Analysis of
                        Financial Condition and Results of Operations                                        11


Item 3              Quantitative and Qualitative Disclosures About Market Risks                              30


PART II             OTHER INFORMATION
- -------             -----------------
Item 1              Legal Proceedings                                                                        30

Item 2              Changes in Securities and Use of Proceeds                                                31

Item 3              Defaults Upon Senior Securities                                                          31

Item 4              Submission of Matters to a Vote of Security Holders                                      31

Item 5              Other Information                                                                        32

Item 6              Exhibits and Reports on Form 8-K                                                         32

                    Signature                                                                                33
</TABLE>



                                       2
<PAGE>   3



                         PART I - FINANCIAL INFORMATION
                         ITEM 1 - FINANCIAL STATEMENTS


Columbia Energy Group and Subsidiaries
STATEMENTS OF CONSOLIDATED INCOME (unaudited)

<TABLE>
<CAPTION>
                                                                   Three Months                             Six Months
                                                                  Ended June 30,                          Ended June 30,
                                                      ----------------------------------       -------------------------------
                                                            1998                1997              1998                 1997
                                                      ----------------    --------------       ------------      -------------
                                                                         (millions, except per share amounts)
<S>                                                      <C>                  <C>             <C>                  <C> 
NET REVENUES
    Energy sales                                          $1,149.0             $ 629.5         $2,748.6             $1,960.2
    Less:  Products purchased                                936.8               400.3          2,156.0              1,297.0
                                                          --------             -------         --------             --------

    Gross Margin                                             212.2               229.2            592.6                663.2

    Transportation                                           121.5               120.3            282.7                268.8
    Production gas sales                                      11.7                 8.4             29.1                 13.7
    Other                                                     40.2                49.2            103.7                 89.5
                                                          --------             -------         --------             --------
Total Net Revenues                                           385.6               407.1          1,008.1              1,035.2
                                                          --------             -------         --------             --------

OPERATING EXPENSES
    Operation                                                192.8               200.6            377.2                399.5
    Maintenance                                               24.1                26.8             45.8                 51.4
    Depreciation and depletion                                52.8                49.2            126.0                120.4
    Other taxes                                               45.0                46.2            134.0                123.0
                                                          --------             -------         --------             --------
Total Operating Expenses                                     314.7               322.8            683.0                694.3
                                                          --------             -------         --------             --------

OPERATING INCOME                                              70.9                84.3            325.1                340.9
                                                          --------             -------         --------             --------

OTHER INCOME (DEDUCTIONS)
    Interest income and other, net                             3.2                 6.1              5.5                 20.4
    Interest expense and related charges                     (38.5)              (38.0)           (80.1)               (78.3)
                                                          --------             -------         --------             --------
Total Other Income (Deductions)                              (35.3)              (31.9)           (74.6)               (57.9)
                                                          --------             -------         --------             --------

INCOME BEFORE INCOME TAXES                                    35.6                52.4            250.5                283.0
Income Taxes                                                  12.8                17.5             80.2                 85.4
                                                          --------             -------         --------             --------

NET INCOME                                                $   22.8             $  34.9         $  170.3             $  197.6
                                                          ========             =======         ========             ========

EARNINGS PER SHARE OF COMMON STOCK*                       $   0.27             $  0.42         $   2.04             $   2.38

DIVIDENDS PAID PER SHARE OF COMMON STOCK*                 $   0.20             $  0.17         $   0.37             $   0.27

AVERAGE COMMON SHARES OUTSTANDING (thousands)*              83,335              83,050           83,299               83,019
</TABLE>


*   All per share amounts and average common shares outstanding have been
    restated to reflect a three-for-two common stock split, in the form of a
    stock dividend, effective June 15, 1998.

The accompanying Notes to the Consolidated Financial Statements are an integral
part of these statements.


                                       3

<PAGE>   4



                         PART I - FINANCIAL INFORMATION
                    ITEM 1 - FINANCIAL STATEMENTS (CONTINUED)





Columbia Energy Group and Subsidiaries
CONDENSED CONSOLIDATED BALANCE SHEETS

<TABLE>
<CAPTION>
                                                                                                       As of
                                                                               -----------------------------------------------------
                                                                                     June 30,                        December 31,
                                                                                       1998                              1997
                                                                               ---------------------             -------------------
                                                                                   (unaudited)
ASSETS                                                                                               (millions)
PROPERTY, PLANT AND EQUIPMENT
<S>                                                                                <C>                                 <C>  
    Gas utility and other plant, at original cost                                   $ 7,457.7                           $ 7,368.9
    Accumulated depreciation                                                         (3,555.3)                           (3,481.5)
                                                                                    ---------                           ---------
    Net Gas Utility and Other Plant                                                   3,902.4                             3,887.4
                                                                                    ---------                           ---------

    Gas and oil producing properties, full cost method
       United States cost center                                                        672.4                               660.2
       Canadian cost center                                                               3.7                                   -
    Accumulated depletion                                                              (212.3)                             (196.0)
                                                                                    ---------                           ---------
    Net Gas and Oil Producing Properties                                                463.8                               464.2
                                                                                    ---------                           ---------
Net Property, Plant and Equipment                                                     4,366.2                             4,351.6
                                                                                    ---------                           ---------

INVESTMENTS AND OTHER ASSETS                                                             96.9                                85.2
                                                                                    ---------                           ---------

CURRENT ASSETS
    Cash and temporary cash investments                                                  47.7                                28.7
    Accounts receivable, net                                                            723.9                               868.5
    Gas inventory                                                                       130.1                               226.8
    Other inventories - at average cost                                                  31.0                                35.6
    Prepayments                                                                          79.1                               107.7
    Regulatory assets                                                                    63.3                                64.6
    Underrecovered gas costs                                                             13.3                                41.4
    Deferred property taxes                                                              39.2                                80.8
    Exchange gas receivable                                                             209.0                               189.0
    Other                                                                                42.7                                64.6
                                                                                    ---------                           ---------
Total Current Assets                                                                  1,379.3                             1,707.7
                                                                                    ---------                           ---------

REGULATORY ASSETS                                                                       383.0                               400.9
DEFERRED CHARGES                                                                         76.6                                66.9
                                                                                    ---------                           ---------

TOTAL ASSETS                                                                        $ 6,302.0                           $ 6,612.3
                                                                                    =========                           =========
</TABLE>

The accompanying Notes to the Consolidated Financial Statements are an integral
part of these statements.


                                       4

<PAGE>   5


                         ITEM 1 - FINANCIAL STATEMENTS
                 PART I - FINANCIAL INFORMATION (CONTINUED)


Columbia Energy Group and Subsidiaries
CONDENSED CONSOLIDATED BALANCE SHEETS

<TABLE>
<CAPTION>
                                                                                             As of
                                                                     ------------------------------------------------------
                                                                           June 30,                       December 31,
                                                                             1998                             1997
                                                                     ---------------------            ---------------------
                                                                         (unaudited)
CAPITALIZATION AND LIABILITIES                                                            (millions)
<S>                                                                       <C>                              <C>
CAPITALIZATION
    Common stock equity                                                    $1,935.0                         $1,790.7
    Long-term debt                                                          2,002.2                          2,003.5
                                                                           --------                         --------
Total Capitalization                                                        3,937.2                          3,794.2
                                                                           --------                         --------

CURRENT LIABILITIES
    Short-term debt                                                            45.9                            328.1
    Accounts and drafts payable                                               455.2                            536.7
    Accrued taxes                                                             109.9                            140.9
    Accrued interest                                                           32.8                             29.4
    Estimated rate refunds                                                     53.7                             68.4
    Estimated supplier obligations                                             72.6                             73.9
    Transportation and exchange gas payable                                   124.6                             89.2
    Overrecovered gas costs                                                    67.8                             84.6
    Other                                                                     315.6                            367.0
                                                                           --------                         --------
Total Current Liabilities                                                   1,278.1                          1,718.2
                                                                           --------                         --------

OTHER LIABILITIES AND DEFERRED CREDITS
    Deferred income taxes, noncurrent                                         644.4                            618.4
    Investment tax credits                                                     34.9                             35.6
    Postretirement benefits other than pensions                               102.7                            148.8
    Regulatory liabilities                                                     46.3                             41.3
    Other                                                                     258.4                            255.8
                                                                           --------                         --------
Total Other Liabilities and Deferred Credits                                1,086.7                          1,099.9
                                                                           --------                         --------

TOTAL CAPITALIZATION AND LIABILITIES                                       $6,302.0                         $6,612.3
                                                                           ========                         ========
</TABLE>




                                       5

<PAGE>   6


                         PART I - FINANCIAL INFORMATION
                   ITEM 1 - FINANCIAL STATEMENTS (CONTINUED)



Columbia Energy Group and Subsidiaries
CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited)

<TABLE>
<CAPTION>
                                                                                            Six Months
                                                                                          Ended June 30,
                                                                     -------------------------------------------------
                                                                           1998                            1997
                                                                     ------------------              -----------------
                                                                                        (millions)
<S>                                                                     <C>                             <C> 
OPERATING ACTIVITIES
   Net income                                                            $ 170.3                         $ 197.6
   Adjustments for items not requiring (providing) cash:
      Depreciation and depletion                                           126.0                           120.4
      Deferred income taxes                                                 34.3                            (6.5)
      Earnings from equity investment, net of distributions                 (3.7)                           (0.6)
      Other - net                                                           (3.3)                          (28.0)
                                                                         -------                         -------
                                                                           323.6                           282.9
   Change in components of working capital:
      Accounts receivable                                                  123.1                             2.8
      Gas inventory                                                         96.7                            84.6
      Prepayments                                                           28.6                           (31.4)
      Accounts payable                                                     (25.0)                           54.4
      Accrued taxes                                                        (31.0)                           33.3
      Accrued interest                                                       3.4                             2.5
      Estimated rate refunds                                               (14.7)                          (27.1)
      Estimated supplier obligations                                        (1.3)                          (37.1)
      Under/Overrecovered gas costs                                         11.3                           207.3
      Exchange gas receivable/payable                                       15.9                           (11.0)
      Other working capital                                                 21.6                            10.9
                                                                         -------                         -------
Net Cash from Operations                                                   552.2                           572.1
                                                                         -------                         -------

INVESTMENT ACTIVITIES
   Capital expenditures                                                   (163.4)                         (141.4)
   Other investments - net                                                  (8.5)                           (8.6)
                                                                         -------                         -------
Net Investment Activities                                                 (171.9)                         (150.0)
                                                                         -------                         -------

FINANCING ACTIVITIES
   Retirement of long-term debt                                             (0.9)                           (0.5)
   Dividends paid                                                          (31.1)                          (22.1)
   Issuance of common stock                                                  5.4                             5.5
   Issuance (repayment) of short-term debt                                (281.4)                         (250.0)
   Other financing activities                                              (53.3)                          (14.6)
                                                                         -------                         -------
Net Financing Activities                                                  (361.3)                         (281.7)
                                                                         -------                         -------

Increase in Cash and Temporary Cash Investments                             19.0                           140.4
Cash and temporary cash investments at beginning of year                    28.7                            49.8
                                                                         -------                         -------
Cash and temporary cash investments at June 30 *                         $  47.7                         $ 190.2
                                                                         =======                         =======

SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
   Cash paid for interest                                                   74.5                            71.6
   Cash paid for income taxes (net of refunds)                              32.0                            34.7
</TABLE>

* Columbia considers all highly liquid short-term investments to be cash
equivalents.

The accompanying Notes to the Consolidated Financial Statements are an
integral part of these statements.

                                       6

<PAGE>   7




                         PART I - FINANCIAL INFORMATION
                   ITEM 1 - FINANCIAL STATEMENTS (CONTINUED)


Columbia Energy Group and Subsidiaries
CONSOLIDATED STATEMENTS OF COMMON STOCK EQUITY

<TABLE>
<CAPTION>
                                                                                              As of
                                                                             ------------------------------------
                                                                                 June 30,         December 31,
                                                                                   1998               1997
                                                                             ----------------   -----------------
                                                                                (unaudited)
                                                                                          (millions)
<S>                                                                            <C>                 <C> 
COMMON STOCK EQUITY

Common stock, $10 par value, authorized
   100,000,000 shares, outstanding 83,371,109
   and 55,495,460* shares, respectively                                          $  833.7           $  554.9

Additional paid in capital                                                          758.3              754.2

Retained earnings                                                                   344.0              482.7

Unearned employee compensation                                                       (0.9)              (1.1)

Accumulated Other Comprehensive Income:
   Foreign currency translation adjustment                                           (0.1)                 -
                                                                                 --------           --------

TOTAL COMMON STOCK EQUITY                                                        $1,935.0           $1,790.7
                                                                                 ========           ========
</TABLE>

* The common shares outstanding for December 31, 1997 do not reflect the
three-for-two common stock split, effected on June 15, 1998.

The accompanying Notes to the Consolidated Financial Statements are an integral
part of these statements.


                                       7

<PAGE>   8




                         PART I - FINANCIAL INFORMATION
                   ITEM 1 - FINANCIAL STATEMENTS (CONTINUED)


Columbia Energy Group and Subsidiaries

NOTES

1.          Basis of Accounting Presentation
            The accompanying unaudited condensed consolidated financial
            statements for the Columbia Energy Group (Columbia) reflect all
            normal recurring adjustments that are necessary, in the opinion of
            management, to present fairly the results of operations in
            accordance with generally accepted accounting principles.

            The accompanying financial statements should be read in conjunction
            with the financial statements and notes thereto included in
            Columbia's 1997 Annual Report on Form 10-K and Quarterly Report on
            Form 10-Q for the first quarter of 1998. Income for interim periods
            may not be indicative of results for the calendar year due to
            weather variations and other factors. Certain reclassifications have
            been made to the 1997 financial statements to conform to the 1998
            presentation.

2.          Settlement of Retiree Benefit Obligation
            In March 1998, trusts established by Columbia purchased insurance
            policies that provide both medical and life insurance with respect
            to liabilities to a selected class of current retirees. This
            resulted in a settlement of $152.1 million of Columbia's obligation
            and a gain in the amount of $46.7 million, pre-tax. This gain is
            reflected in the financial statements as a $23.1 million reduction
            to benefits expense, and a $23.6 million liability of certain
            rate-regulated companies.

3.          Earnings Per Share
            Financial Accounting Standards Board Statement of Financial
            Accounting Standards No. 128, "Earnings Per Share" (SFAS No. 128)
            requires dual presentation of Basic and Diluted earnings per share
            (EPS) by entities with complex capital structures and also requires
            restatement of all prior-period EPS data presented. Basic EPS
            includes no dilution and is computed by dividing income available to
            common stockholders by the weighted-average number of common shares
            outstanding for the period. Diluted EPS reflects the potential
            dilution if certain securities are converted into common stock.

            Under the requirements of SFAS No. 128, Columbia's Diluted EPS is
            as follows:

<TABLE>
<CAPTION>

                                                                                Three Months                   Six Months
                                                                               Ended June 30,                 Ended June 30,
                                                                            --------------------         ---------------------
             Diluted EPS Computation                                         1998           1997           1998           1997
             =================================================================================================================
             <S>                                                            <C>           <C>            <C>          <C>   
             Net Income (millions)                                          $  22.8       $  34.9        $ 170.3       $ 197.6
             -----------------------------------------------------------------------------------------------------------------
             Denominator (thousands)
               Average common shares outstanding                             83,335        83,050         83,299        83,019
               Dilutive potential common shares - options                       391           235            391           235
             -----------------------------------------------------------------------------------------------------------------
               Diluted Average Common Shares                                 83,726        83,285         83,690        83,254
             -----------------------------------------------------------------------------------------------------------------
             DILUTED EARNINGS PER SHARE OF COMMON STOCK                     $  0.27       $  0.42        $  2.03       $  2.37
             =================================================================================================================
</TABLE>

            The number of shares reflect a three-for-two common stock split
effected in the form of a stock dividend (see Note 4).



                                       8

<PAGE>   9



                         PART I - FINANCIAL INFORMATION
                   ITEM 1 - FINANCIAL STATEMENTS (CONTINUED)

4.          Stock Split Effected in the Form of a Stock Dividend
            On May 20, 1998, Columbia's board of directors approved a
            three-for-two common stock split, effected in the form of a 50%
            stock dividend (stock split), on June 15, 1998, payable to
            shareholders of record as of June 1, 1998. In connection with the
            stock split, 27.8 million shares were issued on June 15, 1998, and
            $277.9 million was transferred to common stock from retained
            earnings. The value of fractional shares resulting from the stock
            split was determined at the closing price on June 1, 1998, and $0.6
            million was paid in cash to the shareholders for fractional-share
            interests. All references in the financial statements and notes to
            the number of common shares outstanding and per-share amounts,
            except where otherwise noted, reflect the retroactive effect of the
            stock split.

5.          New Accounting Standards
            In March 1998, the Accounting Standards Executive Committee of the
            American Institute of Certified Public Accountants issued Statement
            of Position 98-1, "Accounting for the Costs of Computer Software
            Developed for Internal Use" (SOP 98-1). This statement requires the
            capitalization of certain internal-use software costs, once certain
            criteria are met. Columbia adopted this statement in June 1998,
            retroactive to the beginning of the year. The adoption of SOP 98-1
            did not have a material effect on Columbia's financial statements.

            In April 1998, the Accounting Standards Executive Committee of the
            American Institute of Certified Public Accountants issued Statement
            of Position 98-5, "Reporting on the Costs of Start-Up Activities"
            (SOP 98-5). This statement requires that certain costs of start-up
            activities, including organization costs, be expensed as incurred.
            SOP 98-5 is effective for financial statements for fiscal years
            beginning after December 15, 1998. Columbia does not anticipate that
            the adoption of this statement will have a significant impact on the
            consolidated financial statements.

            In June 1998, the Financial Accounting Standards Board issued
            Statement of Financial Accounting Standards No. 133, "Accounting for
            Derivative Instruments and Hedging Activities" (SFAS No. 133). This
            statement establishes accounting and reporting standards for
            derivative instruments, including certain derivative instruments
            embedded in other contracts, (collectively referred to as
            derivatives) and for hedging activities. SFAS No. 133 requires an
            entity to recognize all derivatives as either assets or liabilities
            in the balance sheet and measure those instruments at fair value. If
            certain conditions are met, a derivative may be specifically
            designated as (a) a hedge of the exposure to changes in the fair
            value of a recognized asset or liability or an unrecognized firm
            commitment, (b) a hedge of the exposure to variable cash flows of a
            forecasted transaction, or (c) a hedge of the foreign currency
            exposure of a net investment in a foreign operation, an unrecognized
            firm commitment, an available-for-sale security, or a
            foreign-currency-denominated forecasted transaction. The accounting
            for changes in the fair value of a derivative depends on the
            intended use of the derivative and the resulting designation. This
            statement is effective for all fiscal quarters of fiscal years
            beginning after June 15, 1999. Columbia does not anticipate that the
            adoption of this statement will have a significant impact on the
            consolidated results of operations.




                                       9
<PAGE>   10



                         PART I - FINANCIAL INFORMATION
                   ITEM 1 - FINANCIAL STATEMENTS (CONTINUED)

 6.         Long-Term Debt - Interest Rate Swap
            At June 30, 1998, Columbia had entered into an interest rate swap
            agreement through November 28, 2002, on a $50 million notional
            amount of its 6.61% Series B Debentures due November 28, 2002. Under
            the terms of the agreement, Columbia pays interest based on a
            floating rate index and receives interest based on a fixed rate. The
            effect is to modify the interest rate characterization of a portion
            of the long-term debt from fixed to variable.

7.          Business Segment Information
            Effective June 30, 1998, in accordance with generally accepted
            accounting principles, Columbia revised the presentation of its
            business segments. Columbia's operations are divided into five
            primary business segments. The transmission and storage segment
            offers transportation and storage services for local distribution
            companies and industrial and commercial customers located in
            Northeastern, middle Atlantic, Midwestern, and Southern states and
            the District of Columbia. The distribution segment provides natural
            gas service and transportation for residential, commercial and
            industrial customers in Ohio, Pennsylvania, Virginia, Kentucky and
            Maryland. The exploration and production segment explores for,
            develops, produces, and markets gas and oil in the United States and
            in Canada. The marketing segment provides gas and electricity
            supply, fuel management and transportation-related services to a
            diverse customer base including cogenerators, local distribution
            companies, industrial plants, commercial businesses, joint marketing
            partners and residential customers. The propane, power generation
            and LNG segment includes the sale of propane at wholesale and retail
            to customers in eight states, participation in natural gas fueled
            electric generation projects and peaking services.



                                       10

<PAGE>   11


                         PART I - FINANCIAL INFORMATION
                ITEM 2- MANAGEMENT'S DISCUSSION AND ANALYSIS OF
                 FINANCIAL CONDITION AND RESULTS OF OPERATIONS


                   OPERATING INCOME (LOSS) BY SEGMENT

<TABLE>
<CAPTION>
                                                                 Three Months                              Six Months
                                                                Ended June 30,                           Ended June 30,
                                                       ---------------------------------        --------------------------------
                                                               1998         1997                        1998         1997
                                                       ---------------------------------        --------------------------------
                                                                                       (millions)
<S>                                                          <C>          <C>                        <C>            <C>  

Transmission and Storage                                      $58.8        $64.8                       $176.6         $156.3

Distribution                                                   13.4         21.3                        133.5          161.9

Exploration and Production                                      8.5          5.4                         22.9           17.1

Marketing                                                      (7.6)        (0.4)                       (13.1)           0.6

Propane, Power Generation and LNG                              (0.2)        (0.2)                         7.3           10.1

Corporate                                                      (2.0)        (6.6)                        (2.1)          (5.1)
                                                              -----        -----                       ------         ------

   TOTAL                                                      $70.9        $84.3                       $325.1         $340.9
                                                              =====        =====                       ======         ======
</TABLE>



              DEGREE DAYS (DISTRIBUTION SERVICE TERRITORY)

<TABLE>
<CAPTION>
                                                                 Three Months                            Six Months
                                                                Ended June 30,                         Ended June 30,
                                                        -----------------------------         -------------------------------
                                                             1998            1997                 1998               1997
                                                        -------------     -----------         -------------     -------------
<S>                                                         <C>              <C>                 <C>              <C> 
Actual                                                       518              837                 2,837             3,530

Normal                                                       580              580                 3,527             3,527

% Colder (warmer) than normal                                (11)              44                   (20)                -

% Colder (warmer) than prior period                          (38)              19                   (20)               (7)
</TABLE>





                                       11

<PAGE>   12

                         PART I - FINANCIAL INFORMATION
                ITEM 2- MANAGEMENT'S DISCUSSION AND ANALYSIS OF
          FINANCIAL CONDITION AND RESULTS OF OPERATIONS (CONTINUED)

                              CONSOLIDATED RESULTS

Forward-Looking Statements
The Management's Discussion and Analysis, including statements regarding market
risk sensitive instruments, and Item 3 hereof contain "forward-looking
statements," within the meaning of Section 27A of the Securities Act of 1933, as
amended, and Section 21E of the Securities Exchange Act of 1934, as amended.
Investors and prospective investors should understand that several factors
govern whether any forward-looking statement contained herein will be or can be
achieved. Any one of those factors could cause actual results to differ
materially from those projected. These forward-looking statements include, but
are not limited to, statements concerning Columbia's plans, objectives, expected
performance, expenditures and recovery of expenditures through rates, stated on
either a consolidated or segment basis, and any and all underlying assumptions
and other statements that are other than statements of historical fact. From
time to time, Columbia may publish or otherwise make available forward-looking
statements of this nature. All such subsequent forward-looking statements,
whether written or oral and whether made by or on behalf of Columbia, are also
expressly qualified by these cautionary statements. All forward-looking
statements are based on assumptions that management believes to be reasonable;
however, there can be no assurance that actual results will not differ
materially. Realization of Columbia's objectives and expected performance is
subject to a wide range of risks and can be adversely affected by, among other
things, competition, weather, regulatory and legislative changes as well as
changes in general economic, capital and commodity market conditions, many of
which are beyond the control of Columbia. In addition, the relative
contributions to profitability by segment, and the assumptions underlying the
forward-looking statements relating thereto, may change over time due to changes
in the marketplace.

With respect to any references made to ratings assigned to Columbia's debt
securities, there can be no assurance that Columbia will be successful in
maintaining its credit quality, or that such credit ratings will continue for
any given period of time, or that they will not be revised downward or withdrawn
entirely by the rating agencies. Credit ratings reflect only the views of the
rating agencies, whose methodology and the significance of their ratings may be
obtained from them.

Second Quarter Results

                                   Net Income
Columbia's second quarter 1998 net income was $22.8 million, or $0.27 per share,
a decrease of $12.1 million, or $0.15 per share, from the same period last year
due to 38% warmer weather and additional infrastructure investment and staffing
costs in the marketing segment. The second quarter of 1998 was 11% warmer than
normal, while the same period last year was 44% colder than normal. In addition,
the second quarter of 1997 reflected a $12.4 million after-tax improvement from
Columbia Gas Transmission Corporation's (Columbia Transmission) sale of storage
base gas, as provided for by its rate settlement. Except where otherwise noted,
all per share amounts are adjusted to reflect the three-for-two stock split, in
the form of a stock dividend (stock split), that occurred in June 1998.

                                    Revenues
Total consolidated net revenues (operating revenues less associated products
purchased costs) for the second quarter of 1998 were $385.6 million, a $21.5
million decrease from the same period last year, reflecting reduced
weather-sensitive gas sales for the distribution segment and $19.1 million of
revenues last year from Columbia Transmission's regulatory settlement. Tempering
these decreases were higher net revenues from the marketing segment due to a
significant increase in natural gas sales, as well as current period net
revenues from electric power sales that began in late 1997. The increase in the
marketing segment's natural gas sales was primarily in low-margin wholesale
sales that significantly increased energy sales revenues and related products
purchased costs.


                                       12

<PAGE>   13




                         PART I - FINANCIAL INFORMATION
                ITEM 2- MANAGEMENT'S DISCUSSION AND ANALYSIS OF
          FINANCIAL CONDITION AND RESULTS OF OPERATIONS (CONTINUED)

                        CONSOLIDATED RESULTS (CONTINUED)


                                    Expenses
For the three months ended June 30, 1998, operating expenses of $314.7 million
were $8.1 million lower than the same period last year, primarily reflecting a
$10.5 million decrease in operation and maintenance costs. This decrease was
attributable to restructuring initiatives recently implemented for the
transmission and distribution segments as well as $11.9 million of restructuring
costs recorded last year. Partially offsetting these improvements were
additional investments in the marketing segment's infrastructure and higher
costs related to staff additions.

                           Other Income (Deductions)
Other Income (Deductions), which includes interest income and other and interest
expense, reduced income by $35.3 million in the current quarter compared to a
reduction to income of $31.9 million in the same period last year. This change
primarily reflected reduced interest income on temporary cash investments.

                                  Income Taxes
For the three months ended June 30, 1998, income tax expense of $12.8 million
decreased $4.7 million from the same period last year,  primarily  reflecting
lower pre-tax income.

Six Month Results

                                   Net Income
Columbia's net income for the first half of 1998 was $170.3 million, a decrease
of $27.3 million from the same period last year. After adjusting for the stock
split, earnings decreased $0.34 per share to $2.04 per share. This decrease was
largely due to the record-breaking first quarter warm weather that continued
into the second quarter making the first six months of 1998 the warmest on
record for Columbia.

Other significant items affecting net income for the first half of 1998 included
the favorable effect of a $15.9 million after-tax reduction in the cost of
certain postretirement benefits resulting from a buyout of a portion of those
liabilities with an insurance carrier, a benefit of $10 million from tax
planning initiatives and a gain of $8.7 million from the sale of certain storage
volumes. In addition, lower operating expenses for the rate-regulated
subsidiaries and increased gas production and prices for the exploration and
production segment also contributed to the 1998 results. Reducing net income was
Columbia's continued investment in its marketing operations. Net income for the
first half of last year was improved $12.8 million by the implementation of tax
planning initiatives, $12.4 million from Columbia Transmission's regulatory
settlement and $5.5 million from a gain on the deactivation of a storage field.

                                    Revenues
For the first six months of 1998, net revenues of $1,008.1 million represented a
decrease of $27.1 million from the same period last year, primarily reflecting
the adverse effect of this year's warmer weather on the distribution segment and
Columbia Transmission's regulatory settlement in 1997, mentioned previously.
This decrease was partially offset by a $13.5 million increase in the gross
margin from the marketing segment, a $13.4 million increase from the sale in the
first quarter of 1998 of 5 billion cubic feet (Bcf) of storage base gas and
higher revenues from increased gas production and prices. Natural gas sales for
Columbia's marketing segment during the first half of 1998 totaled 711.6 Bcf, an
increase of 483.2 Bcf, or over 200%, from the same period last year, while its
1998 electric power sales were 3,353,000 megawatt hours.

                                    Expenses
Operating expenses of $683 million for the six months ended June 30, 1998,
decreased $11.3 million when compared to the same period last year, largely
reflecting a reduction of $27.9 million in operation


                                       13

<PAGE>   14


                         PART I - FINANCIAL INFORMATION
                ITEM 2- MANAGEMENT'S DISCUSSION AND ANALYSIS OF
          FINANCIAL CONDITION AND RESULTS OF OPERATIONS (CONTINUED)

                        CONSOLIDATED RESULTS (CONTINUED)


and maintenance expense. This decrease was primarily the result of a
$25.6 million reduction in the cost of certain postretirement benefits,
reflecting a buyout with an insurance carrier of a portion of Columbia's
liabilities. Last year's expenses were also higher because of $12.8 million of
restructuring costs. The transmission and distribution segment's operation and
maintenance expense also decreased as a result of cost conservation measures
and efficiencies gained through recently implemented restructuring activities.
Tempering these improvements were $27.2 million of higher operating expenses
for the marketing operations. Depreciation and depletion expense increased $5.6
million due primarily to an increase in depletion expense for the exploration
and production segment resulting from the acquisition of Alamco, Inc. (Alamco).
Higher gross receipts and property taxes in the distribution segment were the
principal reasons for the $11 million increase in other taxes.


                           Other Income (Deductions)
Through the first half of 1998, Other Income (Deductions) reduced income by
$74.6 million compared to a reduction of $57.9 million in the same period last
year. Interest income and other of $5.5 million from the first six months of
1998 decreased $14.9 million when compared to the same period last year due
largely to an $8.5 million gain recorded in 1997 for a payment received from the
deactivation of a storage field that allowed the owner of the coal reserves to
mine the property. Also reducing other income was reduced interest income on
temporary cash investments. Interest expense and related charges of $80.1
million increased $1.8 million from the same period in 1997 primarily reflecting
increased interest on short-term borrowings. Both periods included $70.2 million
of interest expense on long-term debt.

                                  Income Taxes
Income tax expense for the first six months of 1998 was $80.2 million, a
decrease of $5.2 million primarily reflecting lower pre-tax income. Income
benefited from reductions to income tax expense of $10 million in 1998 and $12.8
million in 1997 due to the implementation of tax planning initiatives.

Liquidity and Capital Resources
A significant portion of Columbia's operations is subject to seasonal
fluctuations in cash flow. During the heating season, which is primarily from
November through March, cash receipts from sales and transportation services
typically exceed cash requirements. Conversely, during the remainder of the
year, cash on hand, together with external short-term and long-term financing,
as needed, is used to purchase gas to place in storage for heating season
deliveries, perform necessary maintenance of facilities, make capital
improvements in plant and expand service into new areas.

For the first half of 1998, net cash from operations was $552.2 million, a $19.9
million decrease from the same period last year, due largely to lower cash from
working capital reflecting a decrease in the overrecovery of gas costs by the
distribution subsidiaries, as well as the effect of warmer weather in 1998. The
decrease in the overrecovery position primarily reflects higher gas prices in
the current period compared to the first half of 1997. The recovery of the
commodity portion of the distribution subsidiaries' rates is provided for under
the current regulatory process.

Columbia satisfies its liquidity requirements through internally generated funds
and the use of two unsecured bank revolving credit facilities that total $1.35
billion (Credit Facilities). The Credit Facilities were established in March
1998, and replaced the $1 billion five-year revolving credit facility entered
into by Columbia in November 1995. The Credit Facilities also support Columbia's
commercial paper program.



                                       14
<PAGE>   15



                         PART I - FINANCIAL INFORMATION
                ITEM 2- MANAGEMENT'S DISCUSSION AND ANALYSIS OF
          FINANCIAL CONDITION AND RESULTS OF OPERATIONS (CONTINUED)

                        CONSOLIDATED RESULTS (CONTINUED)



Columbia's Credit Facilities consist of a $900 million five-year revolving
credit facility and a $450 million 364-day revolving credit facility with a
one-year term loan option. The five-year facility provides for the issuance of
up to $300 million of letters of credit.

As of June 30, 1998, Columbia had outstanding approximately $134.9 million of
letters of credit and $45.9 million of commercial paper.

Interest rates on borrowings under the Credit Facilities are based upon the
London Interbank Offered Rate, Certificate of Deposit rates or other short-term
interest rates. The interest rate margins and facility fees on the commitment
amount are based on Columbia's public debt ratings. In 1997, Fitch Investors
Service (Fitch) and Standard & Poor's Ratings Group (S&P) upgraded Columbia's
long-term debt rating to BBB+ and BBB+, respectively. In July 1998, Moody's
Investors Service, Inc. (Moody's) upgraded Columbia's long-term debt rating to
A3. Under the Credit Facilities, higher debt ratings result in lower facility
fees and interest rates on borrowings. Columbia's commercial paper ratings are
F-2 by Fitch, P-2 by Moody's and A-2 by S&P.

Columbia entered into a fixed-to-floating interest rate swap agreement to modify
the interest characteristics of $50 million of its outstanding debt in the
second quarter of 1998. As a result of this transaction, that portion of
Columbia's long-term debt is now exposed to fluctuations in interest rates. In
the opinion of management the overall risk to Columbia is not material.

Columbia has an effective shelf registration statement on file with the U. S.
Securities and Exchange Commission for the issuance of up to $1 billion in
aggregate of debentures, common stock or preferred stock in one or more series.
In March 1996, Columbia issued 5,750,000 shares of common stock under the shelf
registration and used the proceeds to reduce borrowings incurred under the prior
credit facility and to retire $400 million of preferred stock issued in late
1995. No further issuances of the remaining $750 million available under the
shelf registration are scheduled at this time.

Management believes that its sources of funding are sufficient to meet
short-term and long-term liquidity needs not met by cash flows from operations.

Presentation of Segment Information
In accordance with generally accepted accounting principles, beginning with this
report Columbia has revised its reporting of primary business segment
information for the current and prior periods. Marketing operations are now
reported in a separate segment rather than the former marketing, propane and
power generation segment. Columbia LNG Corporation's results are now reported in
the propane, power generation and LNG segment, rather than the transmission and
storage segment.

Impact of Year 2000 on Computer Systems
As previously reported in Columbia's 1997 Annual Report on Form 10-K, Columbia
is in the process of reviewing its computer applications and their interaction
with third parties to address the Year 2000 issue. Based on the review to date,
certain applications have been found not to be Year 2000 compliant. It is
anticipated that all major applications will have been reviewed and, if
necessary, corrected or replaced by the year 2000. At the present time,
management does not anticipate that the cost of correcting or replacing those
applications that are not Year 2000 compliant will have a material impact on
Columbia's financial condition.


                                       15

<PAGE>   16



                         PART I - FINANCIAL INFORMATION
                ITEM 2- MANAGEMENT'S DISCUSSION AND ANALYSIS OF
          FINANCIAL CONDITION AND RESULTS OF OPERATIONS (CONTINUED)


                      TRANSMISSION AND STORAGE OPERATIONS

<TABLE>
<CAPTION>
                                                             Three Months                                  Six Months
                                                            Ended June 30,                               Ended June 30,
                                                 ------------------------------------         ------------------------------------
                                                       1998                1997                     1998                1997
                                                 ----------------    ----------------         ----------------    ----------------
                                                                                    (millions)
<S>                                                  <C>                <C>                       <C>                 <C>
OPERATING REVENUES
    Transportation revenues                          $ 134.5             $ 136.8                   $ 314.6             $ 317.0
    Storage revenues                                    45.7                48.3                      92.3                91.8
    Other revenues                                       4.9                22.6                      23.1                29.7
                                                     -------             -------                   -------             -------
Total Operating Revenues                               185.1               207.7                     430.0               438.5
                                                     -------             -------                   -------             -------

OPERATING EXPENSES
    Operation and maintenance                           89.0               102.5                     174.5               201.4
    Depreciation                                        24.0                26.6                      50.0                52.9
    Other taxes                                         13.3                13.8                      28.9                27.9
                                                     -------             -------                   -------             -------
Total Operating Expenses                               126.3               142.9                     253.4               282.2
                                                     -------             -------                   -------             -------

OPERATING INCOME                                     $  58.8             $  64.8                   $ 176.6             $ 156.3
                                                     =======             =======                   =======             =======


THROUGHPUT (BCF)
Transportation
    Columbia Transmission
        Market area                                    166.9               196.4                     523.6               574.2
    Columbia Gulf
        Mainline                                       151.1               161.9                     281.8               312.9
        Short-haul                                      59.4                57.0                     121.6               119.0
        Intrasegment eliminations                     (147.4)             (160.6)                   (272.4)             (305.4)
                                                     -------             -------                   -------             -------
Total Throughput                                       230.0               254.7                     654.6               700.7
                                                     =======             =======                   =======             =======
</TABLE>




                                       16

<PAGE>   17



                         PART I - FINANCIAL INFORMATION
                ITEM 2 - MANAGEMENT'S DISCUSSION AND ANALYSIS OF
           FINANCIAL CONDITION AND RESULTS OF OPERATIONS (CONTINUED)

                TRANSMISSION AND STORAGE OPERATIONS (CONTINUED)




Market Expansion Projects

                          Millennium Pipeline Project
The proposed Millennium Pipeline Project (Millennium Project), in which Columbia
Transmission is participating and will serve as developer and operator, will
transport western gas supplies to Northeast and middle Atlantic markets. The
442-mile pipeline will connect to TransCanada Pipe Lines Ltd. at a new Lake Erie
export point and transport up to approximately 700 million cubic feet per day to
eastern markets. Ten shippers have signed agreements for the available capacity.
A filing with the Federal Energy Regulatory Commission (FERC), requesting
approval of the Millennium Project, was made in December 1997. This filing
begins the extensive review process, including opportunities for public review,
communication and comment. On June 3, 1998, the Millennium Project sponsors
announced that the proposed in-service date has been revised to November 1,
2000. The current sponsors of the proposed Millennium Project are Columbia
Transmission, Westcoast Energy, Inc., TransCanada Pipe Lines Ltd., and MCN
Energy Group, Inc.

                                  Mainline '99
Columbia Gulf Transmission Company (Columbia Gulf) filed an application with the
FERC on June 5, 1998, for authority to increase the maximum certificated
capacity of its mainline facilities. The expansion project, referred to as
Mainline '99, will increase Columbia Gulf's certificated capacity to nearly 2.2
Bcf/day by replacing certain compressor units and increasing the horsepower
ratings of certain compressor stations. Various shippers have contracted for the
additional service through an open bidding process held in 1997. Construction
relating to the compressor replacements is scheduled to begin in the first
quarter of 1999. The proposed in-service date for the requested Mainline '99
project is December 1, 1999, subject to regulatory approval.

Regulatory Matters

                Challenge to Columbia Transmission's Rate Design
Pursuant to a provision of Columbia Transmission's 1997 rate settlement, the New
York Public Service Commission (NYPSC) had the right to request a hearing
challenging the appropriateness of the Straight Fixed Variable (SFV) rate design
for Columbia Transmission. In a decision rendered in April 1998, the presiding
Administrative Law Judge granted a motion, filed jointly by several interested
parties, to dismiss the challenge by NYPSC. The judge found that the NYPSC
failed to demonstrate that continued use of the SFV rate design on Columbia
Transmission's system would be unjust or unreasonable. On May 26, 1998, the
NYPSC filed an appeal of the Administrative Law Judge's decision.

                        Columbia Gulf's Rate Settlement
Columbia Gulf filed a general rate case in October 1996, which became effective
on May 1, 1997, subject to refund. Active parties in the proceeding unanimously
agreed to the terms of settlement that was filed with the FERC on March 3, 1998.
The settlement was approved by the FERC on April 29, 1998 and became final 30
days thereafter. The approval of the settlement did not have a material impact
on Columbia's financial results.

                           Sale of Certain Facilities
As previously reported in Columbia's 1997 Annual Report on Form 10-K, Columbia
Transmission has agreed to sell certain natural gas pipeline facilities that
consist of approximately 341 miles of pipeline, together with property and
associated facilities, located in New York and Pennsylvania. On May 22, 1998,
Columbia Transmission filed an application with the FERC seeking authority to
abandon the facilities by sale to Norse Pipeline, LLC for $21.8 million. The
sale of these assets will not have a material impact on Columbia's financial
results.



                                       17

<PAGE>   18



                         PART I - FINANCIAL INFORMATION
                ITEM 2 - MANAGEMENT'S DISCUSSION AND ANALYSIS OF
           FINANCIAL CONDITION AND RESULTS OF OPERATIONS (CONTINUED)

                TRANSMISSION AND STORAGE OPERATIONS (CONTINUED)


Also as previously reported in Columbia's 1997 Annual Report on Form 10-K,
Columbia Transmission is in the process of selling its gathering facilities. As
part of this process, Columbia Transmission's anticipated sale of 750 miles of
gathering facilities to Columbia Natural Resources, Inc. (Columbia Resources),
has been delayed due to a dispute with a gas distribution company. The delay in
the sale of these assets is not expected to have a material impact on Columbia's
financial results.

Bankruptcy-related Producer Claims
On April 27, 1998, the Claims Mediator issued a recommended finding disallowing
the claim of KV Oil & Gas (KV). On July 10, 1998, the United States Bankruptcy
Court for the District of Delaware (Bankruptcy Court) approved Columbia
Transmission's motion to have the claim disallowed. KV did not appeal the order,
which became final on July 20, 1998.

On July 24, 1998, the Bankruptcy Court entered an Order allowing the claim of
New Bremen Corporation in accordance with the Claims Mediator's Report and
Recommendations and the decision of the U.S. 5th Circuit Court of Appeals. New
Bremen had ten days in which to file notice of an appeal of this Order to the U.
S. District Court. No notice was filed. During Columbia Transmission's
bankruptcy proceedings, New Bremen filed a recalculated claim for approximately
$88 million. Columbia Transmission believes that the Court's Order granting its
motion will result in an allowed claim amount that will be immaterial.

Environmental Matters
Columbia's transmission subsidiaries have implemented programs to continually
review compliance with existing environmental standards. In addition, Columbia
Transmission continues to review past operational activities and to formulate
remediation programs where necessary. Columbia Transmission is currently
conducting assessment, characterization and remediation activities at specific
sites under a 1995 Environmental Protection Agency (EPA) Administrative Order by
Consent (AOC).

Consistent with Statement of Financial Accounting Standards No. 71, "Accounting
for the Effects of Certain Types of Regulation," a regulatory asset has been
recorded to the extent environmental expenditures are expected to be recovered
through rates. As previously reported in Columbia's 1997 Annual Report on Form
10-K, Columbia Transmission's 1997 rate settlement excluded the issue of
environmental cost recovery and provided that a hearing be held to address this
issue. The procedural schedule established by the presiding Administrative Law
Judge provided for a hearing to commence in the fall of 1998. However, at the
request of Columbia Transmission and other active parties, the schedule was
suspended on May 5, 1998, in order to afford the parties an opportunity to
pursue settlement discussions. These discussions are ongoing, however, it is not
possible to predict whether or not they will be successful. Columbia
Transmission also continues to pursue recovery of environmental expenditures
from its insurance carriers and has met with some success; however at this time,
management is unable to determine the total amount or final disposition of any
such recovery. Management does not believe that Columbia Transmission's
environmental expenditures will have a material adverse effect on its
operations, liquidity or financial position, based on known facts and existing
laws and regulations and the long period over which expenditures will be made.

Throughput
Columbia Transmission's throughput consists of transportation and storage
services for local distribution companies and other customers within its market
area, which covers fifteen Northeastern, mid-Atlantic, Midwestern and Southern
states and the District of Columbia. Throughput for Columbia Gulf reflects


                                       18

<PAGE>   19






                         PART I - FINANCIAL INFORMATION
                ITEM 2 - MANAGEMENT'S DISCUSSION AND ANALYSIS OF
           FINANCIAL CONDITION AND RESULTS OF OPERATIONS (CONTINUED)

                TRANSMISSION AND STORAGE OPERATIONS (CONTINUED)


mainline transportation services from Rayne, Louisiana, to West Virginia and
short-haul transportation services from the Gulf of Mexico to Rayne, Louisiana.

Throughput for the transmission and storage segment totaled 230 Bcf for the
second quarter of 1998, and 654.6 Bcf for the six months ended June 30, 1998.
This represents a decrease of 24.7 Bcf and 46.1 Bcf, respectively, from the same
periods last year, primarily reflecting the impact of warmer weather. This
decrease was partially offset by increased throughput associated with new
contracts attributable to Columbia Transmission's market expansion project that
was placed in service in November 1997.

Operating Revenues
Total operating revenues were $185.1 million for the second quarter of 1998 and
$430 million for the six months ended June 30, 1998. This represents a decrease
of $22.6 million and $8.5 million, respectively, compared to the same periods in
1997. This decrease was principally due to the recording of $19.1 million of
revenues in the second quarter of 1997 for the sale of base gas provided for in
Columbia Transmission's regulatory settlement. Revenues in both the current
quarter and year-to-date period were also lower compared to last year due to the
sale of certain gathering facilities in 1997. Revenues were improved in the
current six-month period by the first quarter sale of approximately 5 Bcf of
base gas volumes that were part of Columbia Transmission's overall 1997 rate
settlement. Increased revenues from transportation and storage services,
primarily related to Columbia Transmission's market expansion contracts, and the
effect of Columbia Gulf's regulatory settlement in May 1998 also contributed to
current period revenues.

Operating Income
Operating income for the second quarter was $58.8 million, a decrease of $6
million from the same period last year, reflecting $22.6 million lower operating
revenues that were partially offset by $16.6 million lower operating expenses.
Operation and maintenance expense decreased $13.5 million due to operating
efficiencies gained through restructuring initiatives and reduced costs
attributable to the sale of certain facilities as mentioned above. Part of the
decline in operation and maintenance expense was approximately $7.9 million of
restructuring costs recorded in the second quarter of 1997.

For the first half of 1998, operating income for the transmission and storage
segment of $176.6 million increased $20.3 million over the same period last year
as $28.8 million lower operating expenses more than offset lower operating
revenues. Operation and maintenance expense declined $26.9 million compared to
the same period in 1997, primarily reflecting savings achieved through the
implementation of restructuring initiatives and a $4.5 million reduction in the
cost of certain postretirement benefits, as discussed previously. As mentioned
above, approximately $7.9 million of restructuring costs were recorded in the
second quarter of 1997, which contributed to the decline.


                                       19

<PAGE>   20







                         PART 1 - FINANCIAL INFORMATION
                ITEM 2 - MANAGEMENT'S DISCUSSION AND ANALYSIS OF
           FINANCIAL CONDITION AND RESULTS OF OPERATIONS (CONTINUED)


                             DISTRIBUTION OPERATIONS

<TABLE>
<CAPTION>
                                                                    Three Months                          Six Months
                                                                   Ended June 30,                        Ended June 30,
                                                          -------------------------------       --------------------------------
                                                                1998           1997                   1998              1997
                                                          --------------    -------------       --------------    --------------
                                                                                        (millions)
<S>                                                           <C>            <C>                 <C>                 <C> 
NET REVENUES
    Sales revenues                                             $276.5         $342.8               $1,020.5           $1,368.0
    Less: Cost of gas sold                                      158.3          207.5                  639.8              926.6
                                                               ------         ------               --------           --------
    Net Sales Revenues                                          118.2          135.3                  380.7              441.4
                                                               ------         ------               --------           --------

    Transportation revenues                                      35.8           33.3                   93.5               75.4
    Less: Associated gas costs                                    4.4            3.3                   10.0                6.2
                                                               ------         ------               --------           --------
    Net Transportation Revenues                                  31.4           30.0                   83.5               69.2
                                                               ------         ------               --------           --------

Net Revenues                                                    149.6          165.3                  464.2              510.6
                                                               ------         ------               --------           --------

OPERATING EXPENSES
    Operation and maintenance                                    92.0          102.6                  183.9              212.8
    Depreciation                                                 16.7           12.4                   50.5               48.0
    Other taxes                                                  27.5           29.0                   96.3               87.9
                                                               ------         ------               --------           --------
Total Operating Expenses                                        136.2          144.0                  330.7              348.7
                                                               ------         ------               --------           --------

OPERATING INCOME                                               $ 13.4         $ 21.3               $  133.5           $  161.9
                                                               ======         ======               ========           ========

THROUGHPUT (BCF)
    Sales
        Residential                                              20.9           29.7                   92.9              118.1
        Commercial                                                7.1           10.6                   33.7               44.7
        Industrial and other                                      0.8            0.7                    2.4                1.0
                                                               ------         ------               --------           --------
    Total Sales                                                  28.8           41.0                  129.0              163.8
    Transportation                                               62.5           61.0                  146.6              133.0
                                                               ------         ------               --------           --------
Total Throughput                                                 91.3          102.0                  275.6              296.8
Off-System Sales                                                 22.4           10.9                   51.4               42.2
                                                               ------         ------               --------           --------
Total Sold or Transported                                       113.7          112.9                  327.0              339.0
                                                               ======         ======               ========           ========

SOURCES OF GAS FOR THROUGHPUT (BCF)
    Sources of Gas Sold
        Spot market*                                             57.6           76.8                  119.0              138.4
        Producers                                                 2.9            8.1                    8.6               19.6
        Storage withdrawals (injections)                        (25.9)         (50.7)                  37.8               32.0
        Other                                                    16.6           17.7                   15.0               16.0
                                                               ------         ------               --------           --------
    Total Sources of Gas Sold                                    51.2           51.9                  180.4              206.0
    Transportation received for delivery to customers            62.5           61.0                  146.6              133.0
                                                               ------         ------               --------           --------
Total Sources                                                   113.7          112.9                  327.0              339.0
                                                               ======         ======               ========           ========
</TABLE>

* Purchase contracts of less than one year.



                                       20

<PAGE>   21




                         PART I - FINANCIAL INFORMATION
                ITEM 2 - MANAGEMENT'S DISCUSSION AND ANALYSIS OF
           FINANCIAL CONDITION AND RESULTS OF OPERATIONS (CONTINUED)

                      DISTRIBUTION OPERATIONS (CONTINUED)

Market Conditions
The unusually mild temperatures experienced in the first quarter of 1998
continued into the second quarter. Second quarter weather was 38% warmer than
the same period in 1997 and 11% warmer than normal. As a result, Columbia's
distribution subsidiaries' (Distribution) weather-sensitive deliveries in the
second quarter decreased approximately 16 Bcf from the same quarter last year.
Weather in Distribution's market area through the first half of 1998 was the
warmest on record for that six-month period. It was 20% warmer than the first
six months of 1997 as well as 20% warmer than normal, resulting in a decrease of
34 Bcf in weather-sensitive deliveries from the same period last year.

Regulatory Matters
On March 31, 1998, Columbia Gas of Ohio, Inc. (Columbia of Ohio) filed with the
Public Utilities Commission of Ohio (PUCO) seeking approval to extend its
Customer CHOICE(R) program to all of its nearly 1.3 million Ohio customers. On
June 18, 1998, the PUCO approved the request, with suppliers free to sign up
customers starting August 1, 1998. The PUCO approval to expand and continue the
program was based on the success of Columbia of Ohio's pilot program in three
northwestern Ohio counties where more than 60,000 customers, including 30
percent of eligible residential customers and 46 percent of eligible small
commercial customers, chose to participate.

On July 9, 1998, Columbia Gas of Pennsylvania, Inc. (Columbia of Pennsylvania)
received permission from the Pennsylvania Public Utility Commission (PPUC) to
expand its pilot Customer CHOICE(R) program into five additional counties.
Customers can begin shopping for a new supplier in August 1998 for gas to be
delivered in November. Programs have been in operation in Allegheny and
Washington counties and the approved extension means that over two-thirds of
Columbia of Pennsylvania's 382,000 customer base would be eligible to
participate in the Customer CHOICE(R) program. Meanwhile, Columbia of
Pennsylvania continues to push for a legislative proposal that would set the
terms for natural gas retail competition statewide.

Columbia Gas of Virginia, Inc. (Columbia of Virginia) filed a rate case with the
Virginia State Corporation Commission (VSCC) in May 1998, requesting a $13.8
million increase in annual revenue. Of the requested increase, $8.5 million is
currently being collected, subject to refund, through interim rates from
Columbia of Virginia's 1997 rate filing, which is currently pending before the
VSCC. Rates reflecting the requested additional increase of $5.3 million will go
into effect, also subject to refund, in mid-October 1998. As detailed in the May
1998 filing, the additional revenue increase is necessary to recover plant
additions including those required to replace facilities due to age and
condition along with normal increases in operating expenses. Resolution of these
proceedings will not have a material impact on Columbia's consolidated results.
Columbia of Virginia's two-year pilot transportation program for residential and
small commercial customers began December 1, 1997 and is open to approximately
27,000 customers in the Gainsville market area of Northern Virginia. There are
now over 4,900 customers participating in the program and they are being served
by 7 marketers out of a total of 9 approved to participate. Columbia of Virginia
anticipates expanding the program and eventually have it available to all of its
165,000 customers, depending on the results of the pilot program.

On July 27, 1998, Columbia Gas of Kentucky, Inc. (Columbia of Kentucky) received
approval from the Kentucky Public Service Commission to extend their pilot
off-system sales program for another year until July 31, 1999. The off-system
sales program has been in effect on a pilot basis for two years since August 1,
1996. Columbia of Kentucky must file by July 1, 1999 to continue the program
beyond August 1, 1999.



                                       21

<PAGE>   22



                         PART I - FINANCIAL INFORMATION
                ITEM 2 - MANAGEMENT'S DISCUSSION AND ANALYSIS OF
           FINANCIAL CONDITION AND RESULTS OF OPERATIONS (CONTINUED)

                      DISTRIBUTION OPERATIONS (CONTINUED)



Volumes
Throughput for the second quarter of 1998 was 91.3 Bcf, a decrease of 10.7 Bcf
from the same period in 1997, as the impact of warmer weather was partially
offset by the return to full production at a major industrial customer that had
been idled by a labor strike last year. An increase in transportation volumes
and customer growth also partially offset the adverse impact of the unusual
weather.

For the first half of 1998, throughput of 275.6 Bcf was 21.2 Bcf lower than the
first six months of 1997 as the impact of the record warm weather on tariff
sales was partially offset by customer growth, an increase in transportation
volumes and the return to full production at the major industrial customer.

Net Revenues
Net revenues for the quarter ended June 30, 1998, were $149.6 million, down
$15.7 million from the second quarter of 1997. This decrease primarily reflects
a decline of approximately $25.6 million due to the adverse impact of warm
weather that was partially offset by the beneficial effect of a Columbia of Ohio
regulatory settlement.

For the six months ended June 30, 1998, net revenues were $464.2 million, down
$46.4 million from the same period last year. This decrease primarily reflects
the effect of warmer weather that reduced net revenues approximately $51.8
million compared to the first half of 1997 and was only partially offset by
Columbia of Ohio's regulatory settlement.

Operating Income
Operating income for the second quarter of 1998 was $13.4 million, down $7.9
million from the same period last year. The decline in net revenues was tempered
by a $7.8 million decrease in operating expenses. Operation and maintenance
expense for the second quarter of 1998 was down $10.6 million from the same
period last year primarily reflecting a reduction in net labor and benefits
costs of $7.5 million due to the 1997 restructuring, which resulted in a
reduction in the workforce of approximately 220 employees. Depreciation expense
increased by $4.3 million due in part to plant additions.

For the first six months of 1998, operating income of $133.5 million decreased
$28.4 million from the same period last year due to the decline in net revenues
partially offset by an $18 million decline in operating expenses. Operation and
maintenance expense for the first six months of 1998 decreased $28.9 million
from the same period last year primarily reflecting a $15.9 million decrease in
benefits expense to reflect a reduction in certain postemployment benefits costs
and also due to the ongoing beneficial impact of restructuring. Other taxes
increased $8.4 million primarily due to higher gross receipts and property
taxes. Depreciation expense increased by $2.5 million again due in part to plant
additions.


                                       22

<PAGE>   23



                         PART I - FINANCIAL INFORMATION
                ITEM 2 - MANAGEMENT'S DISCUSSION AND ANALYSIS OF
           FINANCIAL CONDITION AND RESULTS OF OPERATIONS (CONTINUED)

                      EXPLORATION AND PRODUCTION OPERATIONS

<TABLE>
<CAPTION>
                                                           Three Months                                Six Months
                                                          Ended June 30,                             Ended June 30,
                                                ------------------------------------       ------------------------------------
                                                     1998                1997                   1998                 1997
                                                ----------------    ----------------       ----------------    ----------------
                                                                                   (millions)
<S>                                                <C>                   <C>                   <C>                 <C> 
OPERATING REVENUES
    Gas revenues                                    $ 28.8                $ 25.8                $ 62.4              $ 53.7
    Other revenues                                     3.6                   0.9                   7.4                 2.0
                                                    ------                ------                ------              ------
Total Operating Revenues                              32.4                  26.7                  69.8                55.7
                                                    ------                ------                ------              ------

OPERATING EXPENSES
    Operation and maintenance                         12.4                  11.4                  22.8                20.1
    Depreciation and depletion                         8.7                   7.8                  18.9                14.6
    Other taxes                                        2.8                   2.1                   5.2                 3.9
                                                    ------                ------                ------              ------
Total Operating Expenses                              23.9                  21.3                  46.9                38.6
                                                    ------                ------                ------              ------

OPERATING INCOME                                    $  8.5                $  5.4                $ 22.9              $ 17.1
                                                    ======                ======                ======              ======


GAS PRODUCTION STATISTICS
Production (Bcf)
    U.S.                                              10.2                   8.4                  20.1                16.7
    Canada                                             0.1                     -                   0.1                   -
                                                    ------                ------                ------              ------
      Total                                           10.3                   8.4                  20.2                16.7
                                                    ======                ======                ======              ======

Average Price ($ per Mcf)
    U.S.                                              2.81                  2.67                  3.09                2.72
    Canada                                            2.66                     -                  2.79                   -

OIL AND LIQUIDS PRODUCTION STATISTICS
Production (000Bbls)
    U.S.                                                48                    48                   106                 100
    Canada                                               4                     -                     4                   -
                                                    ------                ------                ------              ------
      Total                                             52                    48                   110                 100
                                                    ======                ======                ======              ======

Average Price ($ per Bbl)
    U.S.                                             12.66                 17.67                 13.45               19.45
    Canada                                           17.37                     -                 17.56                   -
      Average                                        12.84                 17.67                 13.61               19.45
</TABLE>





                                       23

<PAGE>   24



                        PART I - FINANCIAL INFORMATION
                ITEM 2 - MANAGEMENT'S DISCUSSION AND ANALYSIS OF
           FINANCIAL CONDITION AND RESULTS OF OPERATIONS (CONTINUED)

                     EXPLORATION AND PRODUCTION (CONTINUED)


Drilling Activity
During the first half of 1998, Columbia Resources participated in 41 gross
wells, of which 73% were successful. These wells added 5.7 net billion cubic
feet equivalent (Bcfe) to reserves, an increase of 3.4 net Bcfe over the first
six months of 1997.

Joint Venture with CanEnerco Limited
During the second quarter of 1998, Columbia Resources entered into a Joint
Venture Agreement with CanEnerco Limited (CanEnerco), a Canadian Corporation, to
jointly develop drilling properties located in southwestern Ontario. This
agreement will include approximately 50,000 net acres owned by CanEnerco and
5,000 net acres owned by Columbia Natural Resources Canada Ltd., a wholly-owned
subsidiary of Columbia Resources.

Volumes
Gas production for the current quarter of 10.3 Bcf increased 1.9 Bcf, or 23%,
over the second quarter of 1997. The properties purchased from Alamco
represented two-thirds of this increase. For the six months ended June 30, 1998,
gas production increased 3.5 Bcf to 20.2 Bcf.

Operating Revenues
Second quarter operating revenues for 1998 increased $5.7 million from the same
period last year to $32.4 million. For the quarter ended June 30, 1998, Columbia
Resources' average gas sales price was $2.81 per Mcf compared to $2.67 per Mcf,
in the second quarter of 1997. In addition, third party gathering revenues
increased $1.6 million. As previously reported in Columbia's 1997 Annual Report
on Form 10-K, certain gathering facilities were transferred from Columbia
Transmission to Columbia Resources in the third quarter of 1997.

Operating revenues of $69.8 million for the first six months of 1998 increased
$14.1 million over the same period last year, primarily due to the increase in
production and higher gas prices. Columbia Resources' average gas sales price
for the six months ended June 30, 1998, was $3.09 per Mcf, up 14% over the same
period last year. The stronger natural gas prices reflected the benefit of
hedging activity last fall when prices were significantly higher. Third party
gathering revenues also increased $3.6 million. Revenues in 1997 benefited from
$4.1 million of revenues recorded in 1997 for a payment made by a cogeneration
partnership to allow it to terminate its gas purchase contract with Columbia
Resources.

Operating Income
Operating income for the three and six months ended June 30, 1998, were $8.5
million and $22.9 million, respectively. This is an increase of $3.1 million and
$5.8 million, respectively, over the same periods last year. The income
improvements occurred notwithstanding higher operation and maintenance expenses
due to additional costs associated with the acquisition of Alamco and the
transfer of gathering facilities, as well as an increase in depletion expense
due to the additional investment in the exploration and production segment.


                                       24


<PAGE>   25



                         PART I - FINANCIAL INFORMATION
                ITEM 2 - MANAGEMENT'S DISCUSSION AND ANALYSIS OF
           FINANCIAL CONDITION AND RESULTS OF OPERATIONS (CONTINUED)

                              MARKETING OPERATIONS

<TABLE>
<CAPTION>
                                                                Three Months                               Six Months
                                                               Ended June 30,                            Ended June 30,
                                                     ----------------------------------         --------------------------------
                                                           1998               1997                  1998               1997
                                                     ----------------   ---------------         -------------    ---------------
                                                                                       (millions)
<S>                                                  <C>                   <C>                    <C>                 <C> 
OPERATING REVENUES
    Gas revenues                                      $781.7                $295.9                 $1,640.8            $602.0
    Power revenues                                      91.5                     -                     97.8                 -
                                                      ------                ------                 --------            ------
    Total Revenues                                     873.2                 295.9                  1,738.6             602.0

    Less: Products purchased                           861.5                 291.7                  1,715.6             592.5
                                                      ------                ------                 --------            ------

Gross Margin                                            11.7                   4.2                     23.0               9.5
                                                      ------                ------                 --------            ------

OPERATING EXPENSES
    Operation and maintenance                           18.0                   4.3                     33.5               8.2
    Depreciation                                         0.7                   0.1                      1.4               0.2
    Other taxes                                          0.6                   0.2                      1.2               0.5
                                                      ------                ------                 --------            ------
Total Operating Expenses                                19.3                   4.6                     36.1               8.9
                                                      ------                ------                 --------            ------

OPERATING INCOME (LOSS)                               $ (7.6)               $ (0.4)                $  (13.1)           $  0.6
                                                      ======                ======                 ========            ======


MARKETING SALES
    Gas (billion cubic feet)                           347.4                 121.7                    711.6             228.4
    Power (thousand megawatt hours)                    3,048                     -                    3,353                 -
</TABLE>




                                       25

<PAGE>   26



                         PART I - FINANCIAL INFORMATION
                ITEM 2 - MANAGEMENT'S DISCUSSION AND ANALYSIS OF
           FINANCIAL CONDITION AND RESULTS OF OPERATIONS (CONTINUED)

                        MARKETING OPERATIONS (CONTINUED)

Columbia's wholesale and retail nonregulated natural gas and electric power
marketing operations are conducted by Columbia Energy Services Corporation
(Columbia Energy Services). These businesses provide integrated energy-related
products and services to wholesale, industrial and commercial, and residential
customers nationwide. The wholesale business line provides products and services
to wholesale customers, including gas and electricity supply, fuel management
and transportation-related services, management of energy-related assets, energy
commodity sales and services, risk management products and financial services.
The retail business line provides energy-related products and services to a
diverse customer base, including industrial and commercial customers as well as
residential customers.

Wholesale Energy Activity
Wholesale energy activity can be categorized into two broad business lines: gas
trading and marketing and electric power trading. Gas trading and marketing
activities have grown significantly since June 30, 1997, when Columbia Energy
Services acquired PennUnion Energy Services, LLC (Penn Union), an energy
marketing affiliate of the Pennzoil Company. Columbia Energy Services' marketing
volumes are exceeding 4.2 Bcf per day as a result of this acquisition together
with internal growth.

Electric power trading and marketing activities began in December 1997. During
the first six months of 1998, Columbia Energy Services has continued to expand
its presence in the electricity market. In the first quarter of 1998, Columbia
Energy Services joined the Pennsylvania-New Jersey-Maryland electric power pool
that covers much of the heavily populated mid-Atlantic region of the U.S. During
the second quarter of 1998, Columbia Energy Services, through a subsidiary,
began trading electricity nationwide when it gained membership into the Western
System Power Pool (WSPP). The WSPP, formed by a group of electric utilities in
the 1980s to buy electricity from energy marketers, binds members to a common
marketing agreement thereby providing a more efficient trading process.

A ten-year natural gas supply contract between Columbia Energy Services and a
municipal gas authority was signed in July 1998. Effective August 1, 1998,
Columbia Energy Services will sell to the municpal gas authority approximately
45 Bcf of natural gas over the ten years. As part of the agreement, in July
1998, the municipal gas authority made an advance payment of $73.5 million for
such future deliveries.

In June 1998, Columbia Energy Services signed a long-term energy management
contract with Hopewell Cogeneration Limited Partnership (HCLP), a 365-megawatt
combined-cycle, natural gas-fired generation facility in Hopewell, Virginia.
Columbia Energy Services began providing HCLP with natural gas on June 1, 1998.
HCLP has a baseload volume of approximately 5,000 million British thermal units
(MMBtu) daily for steam generation and a daily peak demand volume of up to
75,000 MMBtu for electric generation to be sold to Virginia Electric and Power
Company. In addition to supplying HCLP's natural gas, Columbia Energy Services
will also manage HCLP's fuel oil reserve tanks.

Retail Energy Activity
Retail energy activity can also largely be categorized into two broad business
lines: industrial and commercial retail activity and mass market retail
activity. These retail business lines provide energy expertise to end-use
customers, both for gas and power retail markets. These business lines are
favorably positioned for electric retail market unbundling and deregulation.
During 1998, for example, Columbia Energy Services plans to initiate marketing
retail power to customers in Pennsylvania. Under the Pennsylvania program, a
portion of electric power customers for seven Pennsylvania electric companies
will be able to choose their power supplier beginning January 1, 1999, with
customer choice for all customers expected by January 1, 2001.



                                       26

<PAGE>   27



                         PART I - FINANCIAL INFORMATION
                ITEM 2 - MANAGEMENT'S DISCUSSION AND ANALYSIS OF
           FINANCIAL CONDITION AND RESULTS OF OPERATIONS (CONTINUED)

                        MARKETING OPERATIONS (CONTINUED)


Columbia Energy Services is also offering diverse products and services by
participating in several state or local programs related to the deregulation of
retail markets, including Ohio, Pennsylvania, Virginia, Maryland, New Jersey,
and Illinois. For example, Columbia Service Partners, Inc. (Columbia Service), a
subsidiary of Columbia Energy Services, initiated two homeowners' warranty
programs in Pennsylvania. In May 1998, Water Line Guarantee program began in
Allegheny County including Pittsburgh. The Water Line Guarantee program provides
protection of customer-owned water-supply pipes from the curb to the meter
inside the home. This service is expected to be offered in other western
Pennsylvania counties by year-end 1998. In September 1998, Columbia Service
plans to offer the House Line Guarantee program to western Pennsylvania. This
warranty program provides warranty protection to customer-owned gas lines inside
homes.

Gross Margins
Gross margins (revenues less associated products purchased costs) for the second
quarter of 1998 almost tripled compared to the same period last year. Gas
revenues represent the majority of this growth, primarily due to increased
volumetric growth. Gas marketing volumes for Columbia Energy Services almost
tripled for the second quarter, reflecting its significant growth plus the
effect of the PennUnion acquisition and the agreement with Kerr-McGee
Corporation to purchase and market its off-shore natural gas production. Power
revenues were approximately $92 million for the second quarter of 1998
reflecting three million megawatt hours of power sales. There were no power
revenues in the second quarter of 1997.

For the six months ended June 30, 1998, gross margins totaled $23 million,
compared to $9.5 million for the same period last year. This is primarily due to
increased growth in both natural gas volumes and the addition of power traded
volumes. Gas marketing volumes of 711.6 Bcf for the first half of 1998 were over
three times the same period in 1997.

Operating Income (Loss)
An operating loss of $7.6 million for the second quarter of 1998, was $7.2
million greater than the $400,000 loss in last year's second quarter. Operating
expenses of $19.3 million for the second quarter of 1998 were approximately
$14.7 million more than the same period last year. For the first six months of
1998, the marketing segment had an operating loss of $13.1 million compared to
operating income of $600,000 for the first half of 1997, largely due to higher
operating expenses. The higher expenses for the second quarter and year-to-date
periods related to several changes in the business. These changes reflect
Columbia Energy Services' strategy to build its systems and infrastructure,
allowing for future growth in conjunction with the continued deregulation of the
industry. In addition, higher expenses for the second quarter and first six
months of 1998 include costs associated with the development of new products and
services, such as a new internet-based business called Energy.com Corporation as
well as costs associated with adding new mass-market retail customers and
increased staffing levels.


                                       27

<PAGE>   28



                        PART I - FINANCIAL INFORMATION
                ITEM 2 - MANAGEMENT'S DISCUSSION AND ANALYSIS OF
           FINANCIAL CONDITION AND RESULTS OF OPERATIONS (CONTINUED)


                  PROPANE, POWER GENERATION AND LNG OPERATIONS

<TABLE>
<CAPTION>
                                                         Three Months                                 Six Months
                                                        Ended June 30,                              Ended June 30,
                                             ------------------------------------        -----------------------------------
                                                   1998                1997                    1998                1997
                                             ----------------    ----------------        ---------------    ----------------
                                                                                (millions)
<S>                                             <C>                 <C>                        <C>                <C>
NET REVENUES
    Propane revenues                             $11.3                $12.7                     $37.6              $41.2
    Less: Products purchased                       5.6                  7.0                      18.5               23.2
                                                 -----                -----                     -----              -----
    Net Propane Revenues                           5.7                  5.7                      19.1               18.0

    Power Generation                               2.3                  2.3                       3.8                8.4

    Other Revenues                                 2.0                  2.6                       4.4                5.4
                                                 -----                -----                     -----              -----

Net Revenues                                      10.0                 10.6                      27.3               31.8
                                                 -----                -----                     -----              -----

OPERATING EXPENSES
    Operation and maintenance                      8.5                  9.4                      16.8               18.9
    Depreciation                                   1.2                  0.9                       2.2                1.7
    Other taxes                                    0.5                  0.5                       1.0                1.1
                                                 -----                -----                     -----              -----
Total Operating Expenses                          10.2                 10.8                      20.0               21.7
                                                 -----                -----                     -----              -----

OPERATING INCOME (LOSS)                          $(0.2)               $(0.2)                    $ 7.3              $10.1
                                                 =====                =====                     =====              =====


PROPANE SALES (MILLIONS OF GALLONS)
    Retail                                         8.6                  8.8                      31.4               29.9
    Wholesale and Other                            1.4                  3.3                       3.4                7.0
                                                 -----                -----                     -----              -----
Total Propane Sales                               10.0                 12.1                      34.8               36.9
                                                 =====                =====                     =====              =====
</TABLE>




                                       28

<PAGE>   29



                         PART I - FINANCIAL INFORMATION
                ITEM 2 - MANAGEMENT'S DISCUSSION AND ANALYSIS OF
           FINANCIAL CONDITION AND RESULTS OF OPERATIONS (CONTINUED)

            PROPANE, POWER GENERATION AND LNG OPERATIONS (CONTINUED)

Propane Acquisition
In May 1998, Columbia Propane Corporation (Columbia Propane) purchased the
propane assets of James E. Zerkel, Inc., a company in northwest Virginia that
sells approximately 2.8 million gallons of propane annually to 6,000 customers.

Power Generation
On June 4, 1998, Columbia Electric Corporation (Columbia Electric) and LGE Power
Inc., a subsidiary of LGE Energy Corporation, announced an agreement for
Columbia Electric to participate in the development of a natural gas-fired
cogeneration project. The facility will have a total capacity of approximately
550 megawatts and will provide steam and electric services to a Reynolds Metals
plant in Gregory, Texas. The project will also provide electricity to the Texas
energy market and is expected to begin commercial operation in the Electric
Reliability Council of Texas (ERCOT) region in the summer of 2000. Final
negotiation of project documents and financial arrangements are scheduled to be
completed by this fall.

Net Revenues
Net revenues for the second quarter of 1998 decreased $600,000 from the same
period last year to $10 million. Columbia Propane's net revenues of $5.7 million
in the second quarter of 1998 were unchanged from last year's second quarter, as
the decrease in volumes sold was offset by slightly higher margins. Propane
sales decreased 2.1 million gallons due primarily to warmer weather that was
only partially offset by additional sales from recent acquisitions. Other
miscellaneous revenues decreased $600,000 in the second quarter of 1998 compared
to the same period last year.

For the first six months of 1998, net revenues of $27.3 million decreased $4.5
million from last year primarily due to Columbia Electric's $3.2 million revenue
improvement recorded in the first quarter of 1997 from the assumption of a
cogeneration partnership fuel transportation contract. Propane net revenues
increased $1.1 million due to higher margins achieved in the first quarter of
1998 and additional retail sales attributable to recent acquisitions. Propane
volumes in total for the first six months of 1998 decreased 2.1 million gallons
compared to the same period last year due to warmer weather and lower spot
sales.

Operating Income (Loss)
An operating loss of $200,000 for the second quarter of 1998 was unchanged from
the same period last year, because the $600,000 decrease in net revenues was
offset by a similar decrease in operating expenses. In the second quarter of
1997, Columbia Electric recorded a $600,000 loss on the sale of the cogeneration
partnership assets. Operating income for Columbia LNG Corporation for the second
quarter of 1998 reflected a small improvement over the same period last year.

Operating income of $7.3 million for the six months ended June 30, 1998,
decreased $2.8 million from the same period last year, primarily due to the
decrease in net revenues tempered by $1.7 million lower operating expense.
Higher operating costs for the first six months of 1998 from recent propane
acquisitions and additional start-up costs for new services were more than
offset by the loss recorded last year for the cogeneration partnership,
mentioned above and a reduction in certain postretirement benefit costs 
recorded in the first quarter of 1998.



                                       29

<PAGE>   30



                         PART I - FINANCIAL INFORMATION


Item 3.              Quantitative and Qualitative Disclosures About Market Risk

                     Columbia entered into a fixed-to-floating interest rate
                     swap agreement to modify the interest characteristics of
                     $50 million of its outstanding debt in the second quarter
                     1998. As a result of this transaction, that portion of
                     Columbia's long-term debt is now exposed to fluctuations in
                     interest rates. The overall risk to Columbia is not
                     material in the opinion of management.

                     There have not been any material changes regarding
                     quantitative and qualitative disclosures about market risk
                     from the information reported in Columbia's 1997 Annual
                     Report on Form 10-K.


                          PART II - OTHER INFORMATION


Item l.                 Legal Proceedings

            No new reportable matters have arisen and there have been no
            material developments in any legal proceedings reported in
            Columbia's Annual Report on Form 10-K for the year ended December
            31, 1997, except as follows:

            I.    Purchase and Production Matters
                    A.  Pending Producer Matters
                        New Bremen Corp. v. Columbia Gas Transmission Corp.
                        and Columbia Gulf Transmission Co., No. 88V-631
                        (Dist. Ct. Austin County, TX). On July 24, 1998, the
                        Bankruptcy Court entered an Order allowing the claim of
                        New Bremen Corporation in accordance with the Claims
                        Mediator's Report and Recommendations and the decision
                        of the U.S. 5th Circuit Court of Appeals. New Bremen
                        had ten days in which to file notice of an appeal of
                        this Order to the U. S. District Court.  No notice
                        was filed.  During Columbia Transmission's bankruptcy
                        proceedings, New  Bremen filed a recalculated claim
                        for approximately $88 million.  Columbia Transmission
                        believes that the Court's Order granting its motion
                        will result in an allowed claim amount that is
                        immaterial.

            II.    Other
                    A.  MarkWest Hydrocarbon, Inc., Arbitration Proceeding,
                        AAA Case No. 77 181 0035 98 (filed February 13, 1998);
                        Columbia Gas Transmission Corp. v. MarkWest
                        Hydrocarbon, Inc., U.S. D.C., S.D. W.Va., Case No.
                        2:98-03622 (filed April 28, 1998). In the Settlement
                        of Columbia Transmission's last rate case in Docket
                        No. RP95-408, approved by the FERC on April 17, 1997,
                        Columbia Transmission, MarkWest Hydrocarbon, Inc.
                        ("MarkWest") and other parties agreed that Columbia
                        Transmission's gathering and products extraction rates
                        and services would be "unbundled" in compliance with
                        Order No. 636 and that MarkWest would acquire Columbia
                        Transmission's interests in certain products
                        extraction facilities and provide gas processing
                        services to certain shippers on Columbia Transmission's
                        system.  In February, 1998, negotiations surrounding
                        the transfer of facilities and processing services
                        to MarkWest reached an impasse, resulting in an
                        arbitration proceeding and a court proceeding.
                        Columbia Transmission believes MarkWest's claims are
                        essentially without merit, and that any financial
                        consequence to Columbia Transmission will not be
                        material.



                                       30

<PAGE>   31

                           PART II - OTHER INFORMATION

                        Arbitration Proceeding. On February 13, 1998, MarkWest
                        filed a demand for arbitration. In response to
                        Columbia's Transmission's request, the Arbitration
                        Panel (Panel), by orders dated June 10 and June 16,
                        directed MarkWest to file a more specific statement of
                        the claims to be arbitrated and to explain why the
                        claims are arbitrable. MarkWest filed an Amended Demand
                        for Arbitration on June 19, wherein MarkWest seeks an
                        order, inter alia, declaring that certain
                        pre-settlement agreements between Columbia Transmission
                        and MarkWest have not terminated and that specific
                        performance by Columbia Transmission is required.
                        Markwest also alleges interference with its existing
                        and prospective contracts, misrepresentation and civil
                        conspiracy by Columbia Transmission, Columbia Energy
                        Group and Columbia Resources to interfere with
                        MarkWest's business. MarkWest seeks compensatory
                        damages for past and future losses in an amount not
                        less than $391.55 million as well as exemplary damages.
                        Columbia Transmission answered and filed contingent
                        counterclaims on July 2 and contested the arbitrability
                        of all but three issues. On August 3, 1998, the Panel
                        issued an order whereby it found to be non-arbitrable
                        all of MarkWest's claims except those that relate to
                        obligations arising directly under two of the parties'
                        agreements, some of which Columbia Transmission agreed
                        were subject to arbitration. The Panel's decision
                        effectively dismisses MarkWest's interference,
                        fraudulent concealment, misrepresentation and civil
                        conspiracy claims described above. The Panel's decision
                        will reduce, by an amount Columbia Transmission cannot
                        determine, MarkWest's alleged damages.

                        Court Proceeding. Columbia Transmission filed a
                        complaint against MarkWest on April 28, 1998, in
                        Federal District Court for the Southern District of
                        West Virginia seeking, inter alia, (i) a declaratory
                        order that certain gas processing agreements are
                        terminated in whole or in part, (ii) a declaratory
                        order that MarkWest has breached the Settlement of
                        Docket No. RP 95-408, and (iii) an injunction against
                        MarkWest interfering with Columbia Transmission's
                        efforts to spin off its products extraction business.
                        On August 3, 1998, the U.S. District Court issued a
                        memorandum opinion and order granting MarkWest's motion
                        to stay proceedings and compel arbitration.


Item 2.           Changes in Securities and Use of Proceeds

                       None


Item 3.           Defaults Upon Senior Securities

                       None


Item 4.           Submission of Matters to a Vote of Security Holders

                  On May 20, 1998, Columbia held its Annual Meeting of
                  Stockholders.  On the record date,  Columbia had 55,517,028
                  shares of common stock outstanding, each of which was
                  entitled to one vote at the meeting. The election of four
                  directors each to serve a term of three years and the
                  election of Arthur Andersen LLP as independent public
                  accountants were voted upon and approved by the requisite
                  number of shares present in person or by proxy at the
                  meeting.


                                       31

<PAGE>   32


                          PART II - OTHER INFORMATION

      The following is a summary of the results of that meeting:

                  A.  Election of Directors

<TABLE>
<CAPTION>
                  Name of Director               Votes For      Votes Withheld
                  ----------------               ---------      --------------
                 <S>                            <C>               <C> 
                  Richard F. Albosta             44,186,958         509,281 
                  Malcolm Jozoff                 44,164,106         515,072
                  Gerald E. Mayo                 44,179,908         513,594
                  Douglas E. Olesen              44,185,411         509,242
</TABLE>

                  B. Election of Arthur Andersen LLP as independent public 
accountants:

<TABLE>
<CAPTION>
                           Votes For            Votes Against        Abstain
                           ---------            -------------        -------
                         <S>                       <C>               <C>
                          44,266,053               309,556           115,284
</TABLE>

Item 5.           Other Information

                  Rule 14a-4 of the Securities and Exchange Commission's proxy
                  rules allows a company to use discretionary voting authority
                  to vote on matters coming before an annual meeting of
                  stockholders, which matters are not already included in the
                  proxy materials, if the company does not have notice of the
                  matter at least 45 days before the date corresponding to the
                  date on which it first mailed its proxy materials for the
                  prior year's annual meeting of stockholders or the date
                  specified by an overriding advance notice provision in the
                  company's Bylaws. Columbia's Bylaws do not contain such an
                  advance notice provision.

                  Accordingly, for Columbia's Annual Meeting of Stockholders,
                  that is expected to be held on May 19, 1999, stockholders must
                  submit such written notice to the Corporate Secretary on or
                  before February 13, 1999. Proposals for matters to be included
                  in Columbia's proxy materials must still be received by the
                  Corporate Secretary on or before November 30, 1998.


Item 6.           Exhibits and Reports on Form 8-K

<TABLE>
<CAPTION>
                        Exhibit
                        Number
                        -------
                        <S>          <C>
                          3-D         Restated Certificate of Incorporation of Columbia Energy Group, amended and
                                      restated effective as of January 16, 1998
                          3-E         By-Laws of Columbia Energy Group, amended and restated as of January 16, 1998
                          12          Statements of Ratio of Earnings to Fixed Charges
                          27          Financial Data Schedule
</TABLE>

                 The following reports on Form 8-K were filed during the second
                 quarter of 1998.

<TABLE>
<CAPTION>
                                                    Financial
                               Item                Statements
                             Reported               Included             Date of Event                    Date Filed
                             --------              ----------           ----------------               --------------
                                <S>                 <C>                  <C>                          <C> 
                                 5                    No                  May 20, 1998                  May 21, 1998
                                 5                   Yes *                July 13, 1998                 July 13, 1998
</TABLE>

                   * Summary of Financial and Operational data for three and six
                     months ended June 30, 1998.


                                       32

<PAGE>   33




                                   SIGNATURE



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










                                               Columbia Energy Group
                                            -----------------------------
                                                  (Registrant)









   Date:  August 14, 1998              By:     /s/ Jeffrey W. Grossman
                                          -------------------------------------
                                                  Jeffrey W. Grossman
                                              Vice President and Controller
                                              (Principal Accounting Officer
                                              and Duly Authorized Officer)






                                       33




<PAGE>   1
                                                                     Exhibit 3-D


================================================================================


                                    RESTATED

                          CERTIFICATE OF INCORPORATION

                                       Of

                              COLUMBIA ENERGY GROUP






                          [COLUMBIA ENERGY GROUP LOGO]




As Filed with the Delaware Secretary of State on November 28, 1995, and amended
and restated effective as of January 16, 1998.




================================================================================


                                       2


<PAGE>   2

                                    RESTATED

                          CERTIFICATE OF INCORPORATION

                                       OF

                              COLUMBIA ENERGY GROUP


           Columbia Energy Group, a corporation organized and existing under the
      laws of the State of Delaware, hereby certifies as follows: The name of
      the corporation is Columbia Energy Group. Columbia Energy Group was
      originally incorporated under the name Columbia Gas & Electric Corporation
      and the original Certificate of Incorporation of the Corporation was filed
      with the Secretary of State of the State of Delaware on September 30,
      1926. This Restated Certificate of Incorporation was duly adopted pursuant
      to Sections 103, 242 and 245 of the General Corporation Law of the State
      of Delaware. Upon filing with the Secretary of State, in accordance with
      Section 103, this Restated Certificate of Incorporation amends and
      restates and shall henceforth supersede the original Certificate of
      Incorporation and shall, as it may thereafter be amended in accordance
      with its terms and applicable law, be the Certificate of Incorporation of
      the Corporation. The text of the Certificate of Incorporation as
      heretofore amended or supplemented is hereby amended and restated to read
      in its entirety as follows:


                                    Article I
                                      Name

           The name of this Corporation is Columbia Energy Group.

                                   Article II
                                Registered Office

           The registered office of the Corporation in the State of Delaware is
      located at The Corporation Trust Center, 1209 Orange Street, in the City
      of Wilmington, County of New Castle. The name of its registered agent is
      The Corporation Trust Company, and the address of said registered agent is
      Corporation Trust Center, 1209 Orange Street, in said city.


                                   Article III
                              Statement of Purpose

           The nature of the business to be conducted and the purposes of the
      Corporation are to engage in any lawful act or activity for which
      corporations may be organized under the Delaware General Corporation Law,
      as amended.


                                       3
<PAGE>   3

                                   Article IV
                            Classes of Capital Stock

           The total number of shares of all classes of stock which the
      Corporation shall have authority to issue is One hundred forty million
      (140,000,000), of which Forty million (40,000,000) shares of the par value
      of Ten dollars (S10.00) each are to be of a class designated Preferred
      Stock and One hundred million (100,000,000) shares of the par value of Ten
      dollars (S10.00) each are to be of a class designated Common Stock.

           To the extent required by Section 1123(aX6) of the U.S. Bankruptcy
      Code (11 U.S.C Section 1123(a)(6)) no nonvoting equity securities of the
      Corporation shall be issued. This provision shall have no further force
      and effect beyond that required by Section 1123(a)(6) and is applicable
      only for so long as such Section is in effect and applicable to the
      Corporation.

                                 A. Common Stock

           1. Subject to the powers, preferences and other special rights
      afforded Preferred Stock by the provisions of this Article IV or
      resolutions adopted pursuant hereto, the holders of the Common Stock shall
      be entitled to receive to the extent permitted by Delaware law, such
      dividends as may from time to time be declared by the Board of Directors.

           2. Except as otherwise required by Delaware law and as otherwise
      provided in this Article IV and resolutions adopted pursuant hereto with
      respect to Preferred Stock, and subject to the provisions of the Bylaws of
      the Corporation, as from time to time amended, with respect to the closing
      of the transfer books and the fixing of a record date for the
      determination of stockholders entitled to vote, the holders of the Common
      Stock shall exclusively possess voting power for the election of directors
      and for all other purposes, and the holders of the Preferred Stock shall
      have no voting power and shall not be entitled to any notice of any
      meeting of stockholders.

           3. At all elections of directors by stockholders of the Corporation,
      each holder of Common Stock, and each holder of Preferred Stock, if
      entitled to vote at such election, shall be entitled to as many votes as
      shall equal the number of his shares of Common Stock or Preferred Stock,
      as the case may be, multiplied by the number of directors for whom he as
      such holder shall then be entitled to vote, and he may cast all of such
      votes for one of such directors or may distribute them among any two or
      more of them as he may see fit.

           4. Any action required or permitted to be taken by the stockholders
      of the Corporation must be effected at an annual or special meeting of
      stockholders of the Corporation and may not be effected by any consent in
      writing by such stockholders. Except as otherwise required by law and
      subject to the rights of the holders of any class or any series of
      Preferred Stock, special meetings of stockholders of the Corporation may
      be called only by the Board of Directors pursuant to a resolution adopted
      by a majority of the total number of authorized directors

                                       1

<PAGE>   4

      (whether or not there exist any vacancies in previously authorized
      directorships at the time any such resolution is presented to the Board
      for adoption).

           5. In the event of the voluntary or involuntary liquidation,
      dissolution, distribution of assets or winding-up of the Corporation,
      after distribution in full of the preferential amounts, if any, to be
      distributed to the holders of shares of Preferred Stock, as set forth in
      the resolutions adopted with respect to such series under this Article IV,
      holders of Common Stock shall be entitled to receive all of the remaining
      assets of the Corporation of whatever kind available for distribution to
      the stockholders ratably and in proportion to the number of shares of
      Common Stock held by them respectively. The Board of Directors may
      distribute in kind to the holders of Common Stock such remaining assets of
      the Corporation or may sell, transfer, otherwise dispose of all or any
      part of such remaining assets to any other corporation, trust or other
      entity and receive payment therefor in cash, stock or obligations of such
      other corporation, trust or other entity, or a combination thereof, and
      may set all or make any part of the consideration so received and
      distributed or any balance thereof in kind to holders of Common Stock. The
      merger or consolidation of the Corporation into or with any other
      corporation, or the merger of any other corporation into it, or any
      purchase or redemption of shares of stock of the Corporation of any class,
      shall not be deemed to be a dissolution, liquidation, or winding-up of the
      Corporation for the purposes of this Article IV.

                               B. Preferred Stock

           The designations and the powers, preferences and rights, and the
      qualifications, limitations or restrictions thereof, of the classes of
      stock of the Corporation which are fixed by the Certificate of
      Incorporation, and the express grant of authority to the Board of
      Directors of the Corporation to fix by resolution or resolutions the
      designations and the powers, preferences and rights, and the
      qualifications, limitations or restrictions thereof, of the shares of
      Preferred Stock, which are not fixed by the Certificate of Incorporation,
      are as follows:

           1. The Preferred Stock may be issued from time to time in any amount,
      not exceeding in the aggregate the total number of shares of Preferred
      Stock herein above authorized, as Preferred Stock of one or more series,
      as hereinafter provided. All shares of any one series of Preferred Stock
      shall be alike in every particular, each series thereof shall be
      distinctively designated by letter or descriptive words, and all series of
      Preferred Stock shall rank equally and be identical in all respects except
      as permitted by the provisions of Subsection B.2 of this Article IV.

           2. Authority is hereby expressly granted to and vested in the Board
      of Directors from time to time to issue the Preferred Stock as Preferred
      Stock of any series and in connection with the creation of each such
      series to fix, by the resolution or resolutions providing for the issue of
      shares thereof, the voting powers, designations, preferences and relative,
      participating, optional or other special rights, and the qualifications,
      limitations or restrictions thereof, if any, of such series, to the full
      extent now or hereafter permitted by the laws of the State of Delaware.
      Pursuant to the foregoing general authority vested in the Board of
      Directors, but not in limitation of the powers conferred on the Board of
      Directors thereby and by the laws of the State of Delaware, the

                                       2
<PAGE>   5

      Board of Directors is expressly authorized to determine with respect to 
      each series of Preferred Stock:


           (a)  the designation of such series and number of shares constituting
                such series;

           (b)  the dividend rate or amount of such series, the payment dates
                for dividends on shares of such series, the status of such
                dividends as cumulative or non-cumulative, the date from which
                dividends on shares of such series, if cumulative, shall be
                cumulative, and the status of such as participating or
                non-participating after the payment of dividends as to which
                such shares are entitled to any preference;

           (c)  the price or prices (which amount may vary under different
                conditions or at different dates) at which, and the times, terms
                and conditions on which, the shares of such series may be
                redeemed at the option of the Corporation;

           (d)  whether or not the shares of such series shall be made
                optionally or mandatorily convertible into, or exchangeable for,
                shares of any other class or classes or of any other series of
                the same or any other class or classes of stock of the
                Corporation or other securities and, if made so convertible or
                exchangeable, the conversion price or prices, or the rates of
                exchange, and the adjustments thereof, if any, at which such
                conversion or exchange may be made and any other terms and
                conditions of such conversion or exchange;

           (e)  whether or not the shares of such series shall be entitled to
                the benefit of a retirement or sinking fund to be applied to the
                purchase or redemption of shares of such series, and if so
                entitled, the amount of such fund and the manner of its
                application, including the price or prices at which shares of
                such series may be redeemed or purchased through the application
                of such fund;

           (f)  whether or not the issue of any additional shares of such series
                or any future series in addition to such series or of any shares
                of any other class of stock of the Corporation shall be subject
                to restrictions and, if so, the nature thereof;

           (g)  the rights and preferences, if any, of the holders of such
                series of Preferred Stock upon the voluntary or involuntary
                liquidation, dissolution or winding-up of the Corporation, and
                the status of the shares of such series as participating or
                non-participating after the satisfaction of any such rights and
                preferences;

           (h)  the full or limited voting rights, if any, to be provided for
                shares of such series, in addition to the voting rights provided
                by law; and

                                       3


<PAGE>   6

           (i)  any other relative powers, preferences and participating,
                optional or other special rights and the qualifications,
                limitations or restrictions thereof, of shares of such series;

      in each case, so far as not inconsistent with the provisions of this
      Certificate of Incorporation or the Delaware General Corporation Law then
      in effect.











                                       4



<PAGE>   7




                                    Article V
                               Board of Directors

                      A. Election and Removal of Directors

           1. The Board of Directors shall consist of not less than thirteen
      (13) or more than eighteen (18) persons, the exact number to be fixed from
      time to time exclusively by the Board of Directors pursuant to a
      resolution adopted by a majority of the total number of authorized
      directors (whether or not there exist any vacancies in previously
      authorized directorships at the time any such resolution is presented to
      the Board for adoption), provided, however, this provision shall not act
      to limit Board size in the event a class or classes of Preferred Stock are
      entitled to elect directors to the exclusion of holders of Common Stock.
      The directors shall be classified, with respect to the time for which they
      severally hold office, into three classes, as nearly equal in number as
      possible, as may be, provided in the manner specified in the Bylaws, Class
      I Directors to hold office initially for a term expiring at the annual
      meeting of stockholders to be held in 1997, Class II Directors to hold
      office initially for a term expiring at the annual meeting of stockholders
      to be held in 1998, and Class III Directors to hold office initially for a
      term expiring at the annual meeting of stockholders to be held in 1999,
      with the members of each class to hold office until their successors are
      duly elected and qualified. At each annual meeting of the stockholders of
      the Corporation, the successors to the class, of directors whose term
      expires at that meeting shall be elected to hold office for a term
      expiring at the annual meeting of stockholders held in the third year
      following the year of their election.

           2. Notwithstanding the foregoing and except as otherwise provided by
      law, whenever the holders of any series of the Preferred Stock shall have
      the right (to the exclusion of holders of Common Stock) to elect directors
      of the Corporation pursuant to the provisions of Article IV and any
      resolution adopted pursuant thereto, the election of such directors of the
      Corporation shall be governed by the terms and provisions of said
      resolutions and such directors so elected shall not be divided into
      classes pursuant to this Subsection A.2 of Article V and shall be elected
      to hold office for a term expiring at the annual meeting of stockholders
      held in the first year following their election or, if such right of the
      holders of the Preferred Stock is terminated, for a term expiring in
      accordance with the provisions of such resolutions.

           3. Newly-created directorships resulting from any increase in the
      authorized number of directors or any vacancies in the Board of Directors
      resulting from death, resignation, retirement, disqualification, removal
      from office or other cause may be filled only by a majority vote of the
      directors then in office, even though less than a quorum of the Board of
      Directors, acting at a regular or special meeting. If any applicable
      provision of the Delaware General Corporation Law or any resolution
      adopted pursuant to Article IV expressly confers power on stockholders to
      fill such a directorship at a special meeting of stockholders, such a
      directorship may be filled at such a meeting only by the affirmative vote
      of at least 80 percent of the combined voting powers of the outstanding
      shares of stock of the Corporation entitled to vote generally; provided,
      however, that when (a) pursuant to the provisions of Article IV or any
      resolutions adopted pursuant thereto, the holders of any series of
      Preferred Stock have the right (to the exclusion of holders of 

                                       5
<PAGE>   8

      the Common Stock), and have exercised such right, to elect directors
      and (b) Delaware General Corporation Law or any such resolution expressly
      confers on stockholders voting rights as aforesaid, if the directorship to
      be filled had been occupied by a director elected by the holders of Common
      Stock, then such directorship shall be filled by an 80 percent vote as
      aforesaid, but if such directorship to be filled had been elected by
      holders of Preferred Stock, then such directorship shall be filled in
      accordance with the applicable resolutions adopted under Article IV. Any
      director elected in accordance with the two preceding sentences shall hold
      office for the remainder of the full term of the class of directors in
      which the new directorship was created or the vacancy occurred and until
      such director's successor shall have been elected and qualified unless
      such director was elected by holders of Preferred Stock (acting to the
      exclusion of the holders of Common Stock), in which case such director's
      term shall expire in accordance with the applicable resolutions adopted
      pursuant to Article IV. No decrease in the number of authorized directors
      constituting the entire Board of Directors shall shorten the term of any
      incumbent director, except, as otherwise provided in the applicable
      resolutions adopted pursuant to Article IV, with respect to directorships
      created pursuant to one or more series of Preferred Stock.

           4. Subject to the rights of the holders of any class or series of
      Preferred Stock to elect directors under specified circumstances, any
      director or directors may be removed from office at any time, but only for
      cause and only by the affirmative vote of the holders of at least 80
      percent of the combined voting power of all of the then-outstanding shares
      of stock of the Corporation entitled to vote generally, voting together as
      a single class (it being understood that for all purposes of this Article
      V, each share of Preferred Stock shall have the number of votes, if any,
      granted to it pursuant to this Certificate of Incorporation or any
      designation of terms of any class or series of Preferred Stock made
      pursuant to this Certificate of Incorporation).

           5. Notwithstanding any other provision of this Certificate of
      Incorporation or any provision of law which might otherwise permit a
      lesser vote or no vote, but in addition to any affirmative vote of the
      holders of any particular class or series of the stock of the Corporation
      required by law, this Certificate of Incorporation or any Preferred Stock
      certificate of designation, the affirmative vote of at least 80 percent of
      the total number of authorized directors (whether or not there exist any
      vacancies in previously authorized directorships at the time any such
      alteration, amendment or repeal is presented to the Board for adoption),
      shall be required to alter, amend or repeal this Article V, or any
      provision hereof.

                   B. Liability, Indemnification and Insurance

           1. Limitation on Liability. To the fullest extent that the Delaware
      General Corporation Law as it exists on the date hereof or as it may
      hereafter be amended permits the limitation or elimination of the personal
      liability of directors, no director of the Corporation shall be liable to
      the Corporation or its stockholders for monetary damages for breach of
      fiduciary duty as a director. No amendment to or repeal of this Section B.
      1 shall apply to or have any effect on the liability or alleged liability
      of any director of the Corporation for or with respect to any acts or
      omissions of such director occurring prior to such amendment or repeal.

                                       6

<PAGE>   9

           2. Right to Indemnification. The Corporation shall to the fullest
      extent permitted by applicable law as then in effect indemnify 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 of the
      Columbia Energy Group Service 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 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.

           3. 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
      Subsection B.2 of this Section B or incurred by any Indemnitee in
      connection with any Proceeding referred to in Subsection B.1 of this
      Section B, 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 in furtherance of the
      provisions of this Section B and may create a trust fund, grant a security
      interest or use other means (including, without limitation, a letter of
      credit) to ensure the payment of such amounts as may be necessary to
      effect indemnification as provided in this Section B.

           4. Indemnification; No Exclusive Right. The right of indemnification
      provided in this Section B shall not be exclusive of any other rights to
      which those seeking indemnification may otherwise be entitled, and the
      provisions of this Section B shall inure to the benefit of the heirs and
      legal representatives of any person entitled to indemnity under this
      Section B and shall be applicable to Proceedings commenced or continuing
      after the adoption of this Section B, whether arising from acts or
      omissions occurring before or after such adoption.

           5. 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 Section B:

                (a) Advancement of Expenses. All reasonable expenses 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 

                                       7
<PAGE>   10

           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 Section B.

               (b)  Procedure for Determination of Entitlement to 
                    Indemnification.

                    (i) To obtain indemnification under this Section B, 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 the Supporting Documentation. The
               Secretary of the Corporation shall, promptly upon receipt of such
               a request for indemnification, advise the Board of Directors in
               writing that the Indemnitee has requested indemnification.

                    (ii) The Indemnitee's entitlement to indemnification under
               this Section B shall be determined in one of the following ways:
               (A) by a majority vote of the disinterested Directors (as
               hereinafter defined), even if they constitute less than a quorum
               of the Board; (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) if there are no Disinterested Directors or a majority of such
               Disinterested Directors so directs; (C) by the stockholders of
               the Corporation (but only if a majority of the Disinterested
               Directors presents the issue of entitlement to indemnification to
               the stockholders for their determination); or (D) as provided in
               Section B.5(c).

                    (iii) In the event the determination of entitlement to
               indemnification is to be made by Independent Counsel pursuant to
               Section B.5(b)(ii), a majority of the Disinterested Directors
               shall select the Independent Counsel (except that if there are no
               Disinterested Directors, the Corporation's Chief Legal Officer
               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.

                    (iv) The only basis upon which a finding of no entitlement
               to indemnification may be made is that indemnification is
               prohibited by law


                                       8

<PAGE>   11


                (c) Presumptions and Effect of Certain Proceedings. Except as
           otherwise expressly provided in this Section B, if a Change of
           Control shall have occurred, the Indemnitee Shall be presumed to be
           entitled to indemnification under this Section B upon submission of a
           request for indemnification together with the Supporting
           Documentation in accordance with Section B.5 (b)(i), 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 B.5(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 (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. The termination of any Proceeding described in
           Section B.2, 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 B.5(b) that the Indemnitee is not entitled to
                indemnification under this Section B, (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 nova 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 Section B.

                    (ii) If a determination shall have been made or deemed to
                have been made, pursuant to Section B.5(b) or (c), 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 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 B.5(a) or (y) 

                                       9
<PAGE>   12

                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 B.5(b) or
                (c), 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.

                    (iii) The Corporation shall be precluded from asserting in
                any judicial Proceeding or arbitration commenced pursuant to
                this Section B.5(d) that the procedures and preemptions of this
                Section B 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 Section
                B.

                    (iv) In the event that the Indemnitee, pursuant to this
                Section B.5(d), seeks a judicial adjudication of or an award in
                arbitration to enforce his rights under, or to recover damages
                for breach of, this Section B, 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 B.5:

                    (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 Act by virtue of his, hers or its
                influence over the management or policies of the Corporation, or
                (B) whether or not said 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 Sections 13(d) and 14(d) of
                the Act) is or becomes the "beneficial owner" (as defined in
                Rule 13d-3 under the Act), directly 

                                       10

<PAGE>   13

                or indirectly, of securities of the Corporation representing
                ten percent 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 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 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 Section B. Notwithstanding the
                foregoing, the term "Independent Counsel" shall not include any
                person who, under the applicable standards of professional
                conduct then prevailing under the Delaware law, 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 Section B.

           6. Severability. If any provision or provisions of this Section B
      shall be held to be invalid, illegal or unenforceable for any reason
      whatsoever: (i) the validity, legality and enforceability of the remaining
      provision of this Section B (including, without limitation, all portions
      of any paragraph of this Section B 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
      Section B (including, without limitation, all portions of any paragraph of
      this Section B 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.

           7. 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 VI

                                       11

<PAGE>   14

                    General Powers of the Board of Directors

                                    A. Bylaws

           The Board of Directors shall have the power to make, alter, amend and
      repeal the Bylaws of the Corporation in such form and with such terms as
      the Board may determine, subject to the power granted to stockholders to
      alter or repeal the Bylaws provided under Delaware law; provided, however,
      that, notwithstanding any other provision of this Certificate of
      Incorporation or any provision of law which might otherwise permit a
      lesser vote or no vote the affirmative vote of at least 80 percent of the
      total number of authorized directors (whether or not there exist any
      vacancies in previously authorized directorships at the time any such
      alteration, amendment or repeal is presented to the Board for adoption),
      shall be required to alter, amend or repeal any provision of the Bylaws
      which is to the same effect as any one or more sections of this Article
      VI.

                              B. Charter Amendments

           Subject to the provisions hereof, the Corporation, through its Board
      of Directors, reserves the right at any time, and from time to time, to
      amend, alter, repeal or rescind any provision contained in this Restated
      Certificate of Incorporation in the manner now or hereinafter prescribed
      by law, and any other provisions authorized by Delaware law at the time
      enforced may be added or inserted, in the manner now or hereinafter
      prescribed by law, and any and all rights, preferences and privileges of
      whatsoever nature conferred upon stockholders, directors or any other
      persons whomsoever by and pursuant to this Restated Certificate of
      Incorporation in its present form or as hereinafter amended are granted
      subject to the rights reserved in this Article.

           IN WITNESS WHEREOF, this Restated Certificate of Incorporation has
      been signed under the Seal of the Corporation as of this 16th day of
      January, 1998.


                                   COLUMBIA ENERGY GROUP




Attest:  /s/C. M. Afshar           BY:    /s/  M. W. O'Donnell
         -----------------                ------------------------------
         Secretary                        Senior Vice President and Chief
                                          Financial Officer


[SEAL]


                                       12

<PAGE>   1
                                                                     Exhibit 3-E







===============================================================================



                            COLUMBIA ENERGY GROUP

                                    ------

                                   BY-LAWS



               AS OF NOVEMBER 18, 1987; AMENDED AND RESTATED AS OF
                                JANUARY 16, 1998







===============================================================================



<PAGE>   2



                                     BY-LAWS

                                       Of

                              COLUMBIA ENERGY GROUP


                                    ---------


                                   ARTICLE I.

                                      SEAL.

           The corporate seal of the Corporation shall consist of a metallic
      stamp circular in form, bearing in its center the figures "1926" and the
      words "Incorporated" and "Delaware" and on the outer edge the name of the
      Corporation.


                                   ARTICLE II.

                                    OFFICES.

           The location of the Corporation's principal office shall be in the
      County of New Castle, State of Delaware.

           The Corporation may, in addition to its principal office in the State
      of Delaware, establish and maintain an office or offices in such other
      states and places as the Board of Directors may from time to time find
      necessary or desirable.

           The books, documents, and papers of the Corporation, except as may be
      otherwise required by the laws of the State of Delaware, may be kept
      outside of the said State at such places as the Board of Directors may
      from time to time designate.


                                  ARTICLE III.

                                 CAPITAL STOCK.

           Every stockholder shall be entitled to have a certificate, signed by,
      or in the name of the Corporation by, the Chairman of the Board, the
      President or a Vice President and the Treasurer or an Assistant Treasurer
      or the Secretary or an Assistant Secretary of the Corporation, certifying
      the number of shares owned by him in


<PAGE>   3

      the Corporation; provided, however, that any such signature on the
      certificate may be a facsimile. In case any officer or officers, Transfer
      Agent or Registrar who shall have signed, or whose facsimile signature or
      signatures shall have been used on any such certificate or certificates
      shall cease to be such officer or officers of the Corporation, Transfer
      Agent or Registrar, whether because of death, resignation or otherwise,
      before such certificate or certificates shall have been delivered by the
      Corporation, such certificate or certificates may nevertheless be issued
      and delivered as though the person or persons who signed such certificate
      or certificates or whose facsimile signature or signatures shall have been
      used thereon had not ceased to be such officer or officers of the
      Corporation, Transfer Agent or Registrar. Such certificates shall be
      transferable on the stock books of the Corporation in person or by
      attorney, but, except as hereinafter provided in the case of loss,
      destruction or mutilation of certificates, no transfer of stock shall be
      entered until the previous certificate, if any, given for the same shall
      have been surrendered and cancelled.

           The person in whose name shares of stock stand on the books of the
      Corporation shall be deemed the owner thereof for all purposes as regards
      the Corporation.

           The Board of Directors may make such rules and regulations as it may
      deem expedient, not inconsistent with these By-Laws, concerning the issue,
      transfer and registration of certificates for shares of the capital stock
      of the Corporation. It may appoint one or more Transfer Agents or one or
      more Registrars or both, and may require all certificates of stock to bear
      the signature of either or both.

           In order that the Corporation may determine the stockholders entitled
      to notice of, or to vote at, a 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 other 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 nor less than
      ten days before the date of such meeting, nor more than sixty days prior
      to any other action. If in any case involving the determination of
      stockholders for any purpose other than notice of or voting at a meeting
      of stockholders the Board shall not fix such a record date, 

                                       2
<PAGE>   4

      the record date for determining stockholders for such purpose shall
      be the close of business on the day on which the Board shall adopt the
      resolution relating thereto. A determination of stockholders 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 may fix a
      new record date for the adjourned meeting.

           In case of loss, destruction or mutilation of any certificate of
      stock, another may be issued in its place upon proof of such loss,
      destruction or mutilation and upon the giving to the Corporation of a bond
      sufficient to indemnify the Corporation, its Transfer Agents and
      Registrars, against any claim that may be made against it or them on
      account of the alleged loss or destruction of any such certificate or the
      issuance of such new certificate; provided, however, that a new
      certificate may be issued without requiring any bond when, in the judgment
      of the Board of Directors, it is proper so to do.

                                   ARTICLE IV.

                             STOCKHOLDERS' MEETINGS.

           (a) All meetings of the stockholders shall be held either at the
      principal office of the Corporation in the State of Delaware, or at such
      other place, either within or without the State of Delaware as the Board
      of Directors shall determine. The place at which any given meeting shall
      be held shall be distinctly specified in the notice of such meeting.

           (b) The annual meeting of the stockholders of the Corporation, for
      the election of Directors and for the transaction of such other business
      as may come before the meeting, shall be held on the second Wednesday in
      May of each year, at one o'clock in the afternoon, unless such day shall
      fall on a legal holiday, in which event the annual meeting shall be held
      on the day following. Such date and time of meeting may be changed by
      action of the Board of Directors.

           (c) Special meetings of stockholders of the Corporation may be called
      only by the Board of Directors pursuant to a 

                                       3
<PAGE>   5

      resolution adopted by a majority of the total number of authorized
      directors (whether or not there exist any vacancies in previously
      authorized directorships at the time any such resolution is presented to
      the Board for adoption).

           (d) If the annual meeting of the stockholders be not held as herein
      prescribed, the election of Directors may be held at any meeting
      thereafter called pursuant to these By-Laws.

           (e) Notice of the annual and of all special meetings of the
      stockholders shall be given each holder of stock of the Corporation having
      power to vote at such meeting by depositing in the United States mail a
      written or printed notice of the same not less than ten nor more than
      sixty days prior to the meeting, with postage prepaid, to each such
      stockholder of record of the Corporation and addressed to him at his
      address as registered upon the books of the Corporation. Except in special
      cases where other provision is made by statute, no publication of any
      notice of a meeting of stockholders shall be required. Every notice of a
      meeting of stockholders shall state the place, date and hour of the
      meeting and, in the case of a special meeting, the purpose or purposes for
      which the meeting is called. Notice of any meeting of stockholders shall
      not be required to be given to any stockholder who shall attend such
      meeting in person or by proxy except a stockholder who shall attend such
      meeting for the express purpose of objecting, at the beginning of the
      meeting, to the transaction of any business because the meeting was not
      lawfully called or convened. Except where otherwise required by statute
      for an adjournment exceeding thirty days or if a new record date is fixed
      for the adjourned meeting, notice of any adjourned meeting of the
      stockholders of the Corporation shall not be required to be given if the
      time and place thereof are announced at the meeting which is adjourned.

           It shall be the duty of the officer who shall have charge of the
      stock ledger of the Corporation to prepare and make, at least ten days
      before every meeting of stockholders, a complete list of the stockholders
      entitled to vote at said meeting, arranged in alphabetical order, showing
      their addresses of record and the number of shares held by each. 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 days prior to the meeting, either at a place within the city,
      town or 

                                       4
<PAGE>   6

      village where the meeting is to be held and which place shall be
      specified in the notice of the meeting, or, if not so specified, at the
      place where said meeting is to be held, and the list shall be produced and
      kept at the time and place of the meeting during the whole time thereof,
      and subject to the inspection of any stockholder who may be present.

           (f) The holders of a majority of the stock issued and outstanding and
      entitled to vote thereat, present in person, or represented by proxy,
      shall be requisite and shall constitute a quorum at all meetings of the
      stockholders for the transaction of any business except as otherwise
      provided by law, by the Certificate of Incorporation or by these By-Laws.
      If, however, such majority shall not be present or represented at any
      meeting of the stockholders, the stockholders entitled to vote thereat
      present in person or by proxy shall have power to adjourn the meeting from
      time to time. At any such adjourned meeting at which the requisite amount
      of voting stock shall be represented any business may be transacted which
      might have been transacted at the meeting as originally called.

           (g) Any action required or permitted to be taken by the stockholders
      of the Corporation must be effected at a duly called annual or special
      meeting of stockholders of the Corporation and may not be effected by any
      consent in writing by such stockholders.

                                   ARTICLE V.

                               BOARD OF DIRECTORS.

           (a) The management of business and affairs of the Corporation shall
      be under the direction of a Board of Directors consisting of not less than
      thirteen (13) or more than eighteen (18) persons, the exact number to be
      fixed from time to time exclusively by the Board of Directors pursuant to
      a resolution adopted by a majority of the total number of authorized
      directors (whether or not there exist any vacancies in previously
      authorized directorships at the time of any such resolution is presented
      to the Board for adoption). At the 1986 annual meeting of stockholders,
      the directors shall be divided into three classes, as nearly equal in

                                       5
<PAGE>   7

      number as possible, with the term of office of the first class to expire
      at the 1987 annual meeting of stockholders, the term of office of the
      second class to expire at the 1988 annual meeting of stockholders and the
      term of office of the third class to expire at the 1989 annual meeting of
      the stockholders. Except as otherwise provided in the Corporation's
      Certificate of Incorporation, at each annual meeting of the stockholders
      following such initial classification and election, directors elected to
      succeed those directors whose terms expire shall be elected for a term of
      office to expire at the third succeeding annual meeting of the
      stockholders after their election.

           (b) Any director of the Corporation may resign at any time by giving
      written notice thereof to the Corporation. Such resignation shall take
      effect at the time specified therefor, and unless otherwise specified with
      respect thereto the acceptance of such resignation shall not be necessary
      to make it effective. Subject to the rights of the holders of the
      Preferred Stock to elect directors under specified circumstances, any
      director, or the entire Board of Directors, may be removed from office at
      any time, but only for cause and only by the affirmative vote of the
      holders of at least 80 percent of the combined voting power of all of the
      then outstanding shares of stock of all classes and series of the
      Corporation entitled to vote generally (the "Voting Stock"), voting
      together as a single class (it being understood that, for all purposes of
      these By-Laws, each share of the Preferred Stock shall have the number of
      votes granted to it pursuant to the Corporation's Certificate of
      Incorporation or any designation of terms of any class or series of
      Preferred Stock made pursuant to the Certificate of Incorporation). The
      Corporation must notify the director of the grounds of his impending
      removal and the director shall have an opportunity, at the expense of the
      Corporation, to present his defense to the stockholders by a statement
      which accompanies or precedes the Corporation's solicitation of proxies to
      remove him. The term 'entire Board' as used in these By-Laws means the
      total number of directors which the Corporation would have if there were
      no vacancies.

           (c) Newly created directorships resulting from any increase in the
      authorized number of directors or any vacancies in the Board of Directors
      resulting from death, resignation, retirement, 

                                       6
<PAGE>   8

      disqualification, removal from office or other cause may be filled
      only by a majority vote of the directors then in office, even though less
      than a quorum of the Board of Directors, acting at a regular or special
      meeting. If any applicable provision of the Delaware General Corporation
      Law expressly confers power on stockholders to fill such a directorship at
      a special meeting of stockholders, such a directorship may be filled at
      such a meeting only by the affirmative vote of at least 80 percent of the
      Voting Stock of the Corporation; provided, however, that when (a) pursuant
      to the provision of Article Fourth of the Certificate of Incorporation the
      holders of Preferred Stock have the right, and have exercised such right,
      to elect directors and (b) The Delaware General Corporation Law expressly
      confers on stockholders voting rights as aforesaid, if the directorship to
      be filled had been occupied by a director elected by holders of Common
      Stock, then such directorship shall be filled by an 80 percent vote as
      aforesaid, but if such directorship to be filled had been elected by
      holders of Preferred Stock, then such directorship shall be filled by the
      majority vote of the holders of Preferred Stock. Any director elected in
      accordance with the two preceding sentences shall hold office for the
      remainder of the full term of the directors in which the new directorship
      was created or the vacancy occurred and until such director's successor
      shall have been elected and qualified. No decrease in the authorized
      number of directors constituting the entire Board of Directors shall
      shorten the term of any incumbent director.

           (d) Without prejudice to the general powers conferred by subdivision
      (a) of this Article, the Board of Directors shall have and exercise each
      and every power granted to them in Article Ninth of the Certificate of
      Incorporation of the Corporation.

           (e) Regular meetings of the Board of Directors shall be held at such
      office or offices, whether within or without the State of Delaware, and at
      such times as the Board shall from time to time determine.

           Special meetings of the Board of Directors may be called at any time
      by the Chief Executive Officer or, if he is incapacitated or unable to
      call such meetings, by any member of the Board of Directors. Such meetings
      may take place in the office of the Corporation in the State of Delaware
      or in such office or offices as the Directors may establish.

                                       7
<PAGE>   9

           (f) Except as aforesaid, notice of all special meetings of the Board
      of Directors shall be given to each Director by five days' service of the
      same by telegram, or telephone or letter or personally. Notice of any
      special meeting of the Board of Directors shall state the place and hour
      of the meeting, but need not state the purposes thereof. Notice of any
      meeting of the Board or of any Committee need not be given to any Director
      if waived by him in writing, or by telegraph or cable, whether before or
      after such meeting be held, or if he shall be present at the meeting; and
      any meeting of the Board of Directors or of any Committee shall be a legal
      meeting without any notice thereof having been given, if all the members
      shall be present thereat. Notice of regular meetings of the Board need not
      be given. In the absence of written instructions from a Director
      designating some other address, notice shall be sufficiently given if
      addressed to him at his usual business address.

           (g) Except as provided in clause (c) of this Article, one-third of
      the total number of Directors shall constitute a quorum for the
      transaction of business at all meetings of the Board of Directors; but
      less than a quorum may adjourn the meeting.

           (h) Each Director of the Corporation shall be entitled to receive
      such fixed sum per meeting of the Board of Directors attended, or such
      annual sum, or both, as the Board shall from time to time determine,
      together with his expenses of attendance at such meeting.



                                   ARTICLE VI.

                              STANDING COMMITTEES.

           (a) The Board of Directors shall, by resolution adopted by a majority
      of the whole Board, designate annually three or more of their number, one
      of whom shall be the Chief Executive Officer, to constitute an Executive
      Committee which shall have power to authorize the seal of the Corporation
      to be affixed to all papers which may require it, and shall have and may
      exercise in the intervals between the meetings of the Board of Directors
      the 

                                       8
<PAGE>   10

      powers of the Board in the management of the business and affairs of
      the Corporation (including the power and authority to declare a dividend
      and to authorize the issuance of stock) except the power in reference to
      amending the Certificate of Incorporation, adopting an agreement of merger
      or consolidation, recommending to the stockholders the sale, lease or
      exchange of all or substantially all the Corporation's property and
      assets, recommending to the stockholders a dissolution of the Corporation
      or a revocation of a dissolution, or amending the By-Laws of the
      Corporation. The Executive Committee shall study and report to the Board
      of Directors on such matters as shall be referred to it by the Board or by
      the Chairman of the Board or Chief Executive Officer. The Board of
      Directors may also designate one or more other Directors as alternate
      members of the Executive Committee, who may replace any absent or
      disqualified member at any meeting of the Committee. In the absence or
      disqualification of a member of the 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
      Director to act at the meeting in the place of any such absent or
      disqualified member. Each member of the Executive Committee shall continue
      to be a member thereof only during the pleasure of a majority of the whole
      Board.

           (b) The Board of Directors shall designate the Chairman of the
      Executive Committee, who may be any member thereof. In the absence from
      any meeting of the Executive Committee of its Chairman, the Committee may
      appoint a Chairman of the meeting. At any meeting at which the Executive
      Committee may exercise its power to act in intervals between the meetings
      of the Board in the management of the business and affairs of the
      Corporation, the Secretary of the Corporation shall act as Secretary
      thereof. In the absence from any such meeting of the Secretary, and at any
      other meeting of the Committee, the Committee may appoint a Secretary of
      the meeting.

           (c) Meetings of the Executive Committee may be called at the request
      of any member of the Committee. Two days' notice of each meeting of the
      Executive Committee shall be given by mail, telegraph or telephone or be
      delivered personally, to each member of the Committee. Notice of any
      meeting need not be given to any 

                                       9
<PAGE>   11

      member of the Executive Committee if waived by him in writing or by
      telegraph or cable, whether before or after such meeting be held, or if he
      shall be present at the meeting; and any meeting of the Committee shall be
      a legal meeting without any notice thereof having been given, if all the
      members of the Committee shall be present thereat. In the absence of
      written instructions from a member of the Executive Committee designating
      some other address, notice shall be sufficiently given if addressed to him
      at his usual business address. Subject to the provisions of this Article
      VI, the Executive Committee, by resolution of a majority of all of its
      members, shall fix its own rules of procedure and shall keep a record of
      its proceedings and report them to the Board of Directors at the next
      regular meeting thereof after such proceedings shall have been taken. All
      such proceedings shall be subject to revision or alteration by the Board
      of Directors; provided, however, that third parties shall not be
      prejudiced by such revision or alteration.

           (d) A quorum of the Executive Committee for the transaction of
      business shall consist of not less than one-third of the total number of
      members thereof nor less than two members thereof, and the act of a
      majority of those present at a meeting at which a quorum is present shall
      be the act of the Executive Committee. Less than a quorum may adjourn a
      meeting. The members of the Executive Committee shall act only as a
      committee, and the individual members shall have no power as such.

           (e) Any member of the Executive Committee may resign at any time by
      giving written notice to the Chief Executive Officer or to the Secretary
      of the Corporation. Such resignation shall take effect at the time
      specified in such notice and, unless otherwise specified therein, the
      acceptance of such resignation shall not be necessary to make it
      effective.

           (f) Any vacancy in the Executive Committee shall be filled by the
      vote of a majority of the whole Board of Directors.

           (g) The members of the Executive Committee shall be entitled to
      receive such fees and compensation as the Board of Directors may
      determine.

                                       10
<PAGE>   12

           (h) The Board of Directors may, by resolution adopted by a majority
      of the whole Board, also appoint such other standing or temporary
      committees from time to time as they may see fit, investing them with all
      or any part of their own powers. All committees shall adopt their own
      rules of procedure and shall keep regular minutes of their transactions in
      books kept in the office of the Corporation, and shall report the same to
      the Board of Directors or to the Executive Committee at the various
      meetings thereof.





                                  ARTICLE VII.

                                    OFFICERS.

           (a) The officers of the Corporation shall be the President, one or
      more Vice Presidents, the Secretary and the Treasurer, who shall be
      elected by the Board of Directors, and such additional Assistant
      Secretaries, Assistant Treasurers, and special subordinate officers as may
      from time to time be elected or appointed by the Board of Directors or
      appointed by the Chief Executive Officer. A Chairman of the Board and a
      Vice Chairman of the Board may be elected by the Board of Directors. The
      Board shall designate an officer as the Chief Executive Officer.

           Any two of the above offices, not counting the title of Chief
      Executive Officer, may be held by the same person.

           The Chief Executive Officer shall, if present, preside at all
      meetings of the stockholders and at all meetings of the Board of
      Directors, provided, however, that if there is a Chairman of the Board who
      is not the Chief Executive Officer, the Chairman of the Board, if present,
      shall preside at all meetings of the stockholders and the Board of
      Directors. The Chief Executive Officer or an officer designated by him
      shall make a report on the state of the business of the Corporation at
      each annual meeting of stockholders. From time to time, the Chief
      Executive Officer or officers designated by him shall report to the
      stockholders and to the Board of Directors and to the Executive Committee
      all matters within the knowledge of the Chief Executive Officer which in
      his 

                                       11
<PAGE>   13

      judgment the interests of the Corporation may require to be brought
      to their notice.

           All of the officers of the Corporation shall hold office for one year
      and until others are elected or appointed and qualified in their stead,
      unless in the election or appointment of the officer it shall be specified
      that he holds his office for a shorter period or subject to the pleasure
      of the Board of Directors or the Chief Executive Officer.

           All vacancies in such offices by resignation, death or otherwise may
      be filled by the Board of Directors. In the case of absence or inability
      to act of any officer of the Corporation, and of any person herein
      authorized to act in his place, the Board of Directors may from time to
      time delegate the powers or duties of such officer to any other officer or
      any Director or other person whom they may select.

           (b) The Chief Executive Officer shall have general and active
      supervision and direction over the business and affairs of the Corporation
      and over its several officers; subject, however, to the control of the
      Board of Directors and of the Executive Committee. He shall see that all
      orders and resolutions of the Board of Directors and of the Executive
      Committee are carried into effect. He may be ex officio a member of all
      standing committees of the Board of Directors, and he shall perform such
      other duties as may be assigned to him from time to time by the Board of
      Directors or by the Executive Committee.

           (c) The Chairman or Vice Chairman of the Board, if elected, shall
      perform such duties as from time to time may be assigned by the Board of
      Directors or by the Executive Committee.

           (d) The President and the Vice Presidents shall perform such duties
      as the Board of Directors shall, from time to time, require.

           (e) The Treasurer shall keep full and accurate accounts of receipts
      and disbursements in books belonging to the Corporation, shall deposit all
      moneys and other valuables in the name and to the credit of the
      Corporation, in such depositaries as may be directed by the Board of
      Directors, shall disburse the funds of the Corporation as may be ordered
      by the Board or the Chief 

                                       12
<PAGE>   14

      Executive Officer taking proper vouchers therefor, and shall render
      to the Chief Executive Officer and the Directors whenever they may require
      it an account of all his transactions as Treasurer and of the financial
      condition of the Corporation.

           He shall also perform such other duties as the Board of Directors may
      from time to time require.

           If required by the Board of Directors he shall give the Corporation a
      bond in a form and in a sum with surety satisfactory to the Board of
      Directors for the faithful performance of the duties of his office and the
      restoration to the Corporation in the case of his death, resignation or
      removal from office, of all books, papers, vouchers, money and other
      property of whatever kind in his possession belonging to the Corporation.

           At the request of the Treasurer, or in his absence or inability to
      act, the Assistant Treasurer or, if there be more than one, the Assistant
      Treasurer designated by the Treasurer, shall perform the duties of the
      Treasurer and when so acting shall have the powers of and be subject to
      all the restrictions of the Treasurer. The Assistant Treasurers shall
      perform such other duties as may from time to time be assigned to them by
      the Chief Executive Officer, the Treasurer or the Board of Directors.

           (f) The Secretary shall attend all meetings of the Board of Directors
      and of the stockholders and act as Clerk thereof and record all votes and
      the minutes of all proceedings in a book to be kept for that purpose, and
      shall perform like duties for the standing committees when required.

           He shall keep in safe custody the seal of the Corporation and,
      whenever authorized by the Board or the Executive Committee, affix the
      seal to any instrument requiring the same.

           He shall see that proper notice is given of all meetings of the
      stockholders of the Corporation and of the Board of Directors and shall
      perform such other duties as may be prescribed from time to time by the
      Board of Directors or the Chief Executive Officer.

           At the request of the Secretary, or in his absence or inability to
      act, the Assistant Secretary or, if there be more than one, the Assistant
      Secretary designated by the Secretary, shall perform the duties of the
      Secretary and when so acting shall have all the powers of and be subject
      to all the restrictions of the Secretary. The Assistant Secretaries shall
      perform such other duties 

                                       13
<PAGE>   15

      as may from time to time be assigned to them by the Chief Executive
      Officer, the Secretary or the Board of Directors.

           (g) Any officer of the Corporation may be removed, either with or
      without cause, at any time, by resolution adopted by the Board of
      Directors at a regular meeting or at a special meeting of the Board called
      for that purpose, by any Committee upon whom such power of removal may be
      conferred by the Board of Directors or by a superior officer upon whom
      such power of removal may be conferred by the Board of Directors.


                                  ARTICLE VIII.

                         CONTRACTS, CHECKS, NOTES, ETC.

           (a) All contracts and agreements authorized by the Board of Directors
      or the Executive Committee, and all checks, drafts, notes, bonds, bills of
      exchange and orders for the payment of money (including orders for
      repetitive or non-repetitive electronic funds transfers) shall, unless
      otherwise directed by the Board of Directors, or unless otherwise required
      by law, be signed by any two of the following officers: the Chairman of
      the Board, the President, any Vice President, the Treasurer, the
      Secretary, any Assistant Treasurer or any Assistant Secretary; provided
      that in every case at least one such officer shall be the Chairman of the
      Board, the President, a Vice President, the Treasurer or the Secretary.
      The Board of Directors may, however, notwithstanding the foregoing
      provision, by resolution adopted at any meeting, authorize any of said
      officers to sign checks, drafts and such orders for the payment of money
      singly and without necessity of countersignature, and may designate
      officers of the Corporation other than those named above, or different
      combinations of such officers, who may, in the name of the Corporation,
      execute checks, drafts, and such orders for the payment of money in its
      behalf. Further, the Treasurer is authorized to designate to the
      Corporation's banks, in writing, individuals employed in the Columbia
      Energy Group Service Corporation Cash Management Department, who need not
      be officers or employees of the Corporation, to give in the name of the
      Corporation telephonic, telegraphic, or electronic transfer instructions
      for the payment of

                                       14
<PAGE>   16

      money, which may, with respect to routine items, include instructions
      as to the amount to be transferred, to any bank, pursuant to previously
      issued written orders, signed by officers of the Corporation in any manner
      provided above, which designate the recipients of such amounts and which
      identify what shall be treated as routine items.

           (b) Anything in subdivision (a) of this Article VIII to the contrary
      notwithstanding, the officers of this Corporation may open in the name of
      the Corporation special accounts appropriately designated in which shall
      be deposited funds of the Corporation transferred from the Corporation's
      other accounts by its checks signed in accordance with the requirements of
      subdivision (a) of this Article VIII, but from which special accounts
      funds may be disbursed by check, draft, or other instrument of the
      Corporation designated as drawn against such special account and signed by
      the single signature of any one of the executive officers of the
      Corporation authorized by subdivision (a) of this Article VIII to sign
      checks, drafts and other instruments of the Corporation or signed by the
      single signature of any other person expressly authorized by the Board to
      sign checks, drafts and other instruments disbursing funds from such
      special accounts.

           (c) Anything in subdivision (a) of this Article VIII to the contrary
      notwithstanding, (i) bonds, notes, debentures and other evidence of
      indebtedness of the Corporation issued under an indenture may be executed
      in the name of the Corporation by the facsimile signature, printed,
      engraved or otherwise used thereon, of the Chairman of the Board, the
      President or any Vice President of the Corporation, and the corporate seal
      affixed thereto or impressed, printed, engraved or otherwise reproduced
      thereon may be attested by the facsimile signature of the Secretary or an
      Assistant Secretary of the Corporation, provided that the indenture
      require the same to be authenticated by the trustee under such indenture,
      and (ii) interest coupons attached to any such bond, note, debenture or
      other evidence of indebtedness may be executed on behalf of the
      Corporation by the facsimile signature of the Treasurer of the
      Corporation.

                                       15

<PAGE>   17




                                   ARTICLE IX.

                                  FISCAL YEAR.

           The fiscal year of the Corporation shall begin on the first day of
      January in each year.


                                   ARTICLE X.

                              AMENDMENT OF BY LAWS.

           These By-Laws may be amended, added to, rescinded or repealed at any
      meeting of the Board of Directors or of the stockholders, provided notice
      of the proposed change was given in the notice of the meeting or, in the
      case of a meeting of the Board of Directors, in a notice given not less
      than two days prior to the meeting; provided, however, that,
      notwithstanding any other provisions of these By-Laws or any provision of
      law which might otherwise permit a lesser vote or no vote, but in addition
      to any affirmative vote of the holders of any particular class or series
      of the Voting Stock required by law, the Certificate of Incorporation, any
      class or series of Preferred Stock or these By-Laws, the affirmative vote
      of at least 80 percent of the total number of authorized directors
      (whether or not there exist any vacancies in previously authorized
      directorships at the time any such alteration, amendment or repeal is
      presented to the Board for adoption), shall be required to alter, amend or
      repeal Article IV (c), IV (g), V (a), V (b), V (c), and V (g) of these
      By-Laws or this proviso to this Article X of these By-Laws.


                                   ARTICLE XI.

                               NATIONAL EMERGENCY.

           (a) Definition and Application. For the purposes of this Article XI
      the term "national emergency" is defined as an emergency situation
      resulting from an attack upon the United States, a nuclear disaster within
      the United States, a catastrophe, or 

                                       16
<PAGE>   18

      other emergency condition, as a result of which attack, disaster,
      catastrophe or emergency condition a quorum of the Board of Directors
      cannot readily be convened for action. Persons not directors of the
      Corporation may conclusively rely upon a determination by the Board of
      Directors of the Corporation, at a meeting held or purporting to be held
      pursuant to this Article XII that a national emergency as hereinabove
      defined exists regardless of the correctness of such determination made or
      purporting to be made as hereinafter provided. During the existence of a
      national emergency the provisions of this Article XII shall become
      operative, but, to the extent not inconsistent with such provisions, the
      other provisions of these By-Laws shall remain in effect during any
      national emergency and upon its termination the provisions of this Article
      XII shall cease to be operative.

           (b) Meetings, etc. When it is determined in good faith by any
      director that a national emergency exists, special meetings of the Board
      of Directors may be called by such director. The director calling any such
      special meeting shall make a reasonable effort to notify all other
      directors of the time and place of such special meeting, and such effort
      shall be deemed to constitute the giving of notice of such special
      meeting, and every director shall be deemed to have waived any
      requirement, of law or otherwise, that any other notice of such special
      meeting be given. At any such special meeting two directors shall
      constitute a quorum for the transaction of business including, without
      limiting the generality hereof, the filling of vacancies among directors
      and officers of the Corporation and the election of additional Vice
      Presidents, Assistant Secretaries and Assistant Treasurers. The act of a
      majority of the directors present thereat shall be the act of the Board of
      Directors. If at any such special meeting of the Board of Directors there
      shall be only one director present, such director present may adjourn the
      meeting from time to time until a quorum is obtained, and no further
      notice thereof need be given of any such adjournment.

           The directors present at any such special meeting shall make
      reasonable effort to report any action taken thereat to all absent
      directors, but failure to give such report shall not affect the validity
      of the action taken at any such meeting. All directors, officers,
      employees and agents of, and all persons dealing with, the Corporation, if
      acting in good faith, may conclusively rely upon any action taken at any
      such special meeting.

                                       17
<PAGE>   19

           (c) Amendment. The Board of Directors shall have the power to alter,
      amend, or repeal any of these By-Laws by the affirmative vote of at least
      two-thirds (2/3) of the directors present at any special meeting attended
      by two (2) or more directors and held in the manner prescribed in (b) of
      this Article, if it is determined in good faith by said two-thirds (2/3)
      that such alteration, amendment or repeal would be conducive to the proper
      direction of the Corporation's affairs.

           (d) Chief Executive Officer. If, during the existence of a national
      emergency, the Chief Executive Officer of the Corporation becomes
      incapacitated, cannot by reasonable effort be located, or otherwise is
      unable or unavailable to perform the duties of his office, an Executive
      Vice President of the Corporation, if there be one, is hereby designated
      as Chief Executive Officer. The Executive Vice President senior in office,
      if there be more than one, shall so serve. If an Executive Vice President
      is unable or unavailable to perform the duties of the Chief Executive
      Officer of the Corporation, the senior available Vice President shall be
      designated as Chief Executive Officer, such seniority to be determined by
      the date on which such Vice President was first elected or appointed to
      such office. If none of the foregoing officers is able or available to
      perform the duties of the Chief Executive Officer, the next senior
      available officer of the Corporation is hereby designated as Chief
      Executive Officer, such seniority to be determined by the date on which he
      was first elected or appointed to serve.

           (e) Substitute Directors. To the extent required to constitute a
      quorum at any meeting of the Board of Directors during a national
      emergency, the officers of the Corporation who are present shall be
      deemed, in order of rank of office and within the same rank in order of
      election or appointment to such office, directors for such meeting.


           I, Secretary of COLUMBIA ENERGY GROUP, hereby certify that the
      foregoing constitutes a true and correct copy of the By-Laws of said
      Corporation, effective November 18,1987; and 

                                       18
<PAGE>   20

      amended and restated as of January 16, 1998, to reflect the change in
      the Corporation's name.

           IN WITNESS WHEREOF, I have hereunto set my hand and the seal of said
      Corporation, this day of


                                             /s/ C.M.Afshar
                                        -------------------------
                                                 Secretary






                                       19

<PAGE>   1
                                                                      Exhibit 12
                     COLUMBIA ENERGY GROUP AND SUBSIDIARIES
                Statements of Ratio of Earnings to Fixed Charges
                                 ($ in millions)

<TABLE>
<CAPTION>
                                                                                Twelve Months
                                                                                Ended June 30,
                                                                    --------------------------------------
                                                                        1998                     1997
                                                                    --------------           -------------
<S>                                                                   <C>                     <C>  
Consolidated Income (Loss) from Continuing Operations                  359.7                     372.5

Adjustments:
  Interest during construction                                          (2.6)                      1.6
  Distributed (Undistributed) equity income                              2.7                       1.8
  Fixed charges *                                                      181.8                     181.2
                                                                       -----                     -----
    Earnings Available                                                 541.6                     557.1
                                                                       -----                     -----

Fixed Charges:
  Interest on long-term and short-term debt                            146.8                     145.3
  Other interest                                                        15.8                      14.8
  Portion of rentals representing interest                              19.2                      21.1
                                                                       -----                     -----
Total Fixed Charges **, ***                                            181.8                     181.2
                                                                       -----                     -----

Ratio of Earnings to Fixed Charges                                      2.98                      3.07
                                                                       =====                     =====
<CAPTION>
                                                                                       Twelve Months
                                                                                      Ended December 31,
                                                       ------------------------------------------------------------------------
                                                          1997           1996            1995           1994            1993
                                                       ------------  ------------    ------------   -----------    ------------
<S>                                                     <C>             <C>            <C>             <C>              <C> 
Consolidated Income (Loss) from Continuing Operations    392.2           337.5          (643.0)          392.2           288.1

Adjustments:
  Interest during construction                            (3.0)           (1.1)          (20.2)              -               -
  Distributed (Undistributed) equity income                3.6             1.5            (7.9)           (0.9)           (0.1)
  Fixed charges *                                        182.0           184.6         1,061.3            33.7           120.0
                                                         -----           -----         -------           -----           -----
    Earnings Available                                   574.8           522.5           390.2           425.0           408.0
                                                         -----           -----         -------           -----           -----

Fixed Charges:
  Interest on long-term and short-term debt              145.6           150.8           987.2             0.7             3.1
  Other interest                                          15.4            13.5            53.6            14.1            98.4
  Portion of rentals representing interest                21.0            20.3            20.5            18.9            18.5
                                                         -----           -----         -------           -----           -----
Total Fixed Charges **, ***                              182.0           184.6         1,061.3            33.7           120.0
                                                         -----           -----         -------           -----           -----

Ratio of Earnings to Fixed Charges                        3.16            2.83         N/A (a)           12.61            3.40
                                                         =====           =====         =======           =====           =====
</TABLE>

(a) To achieve a one-to-one coverage, the Corporation would need an additional
$671.1 million of earnings for the twelve months ended December 31, 1995.

*  Amounts for the twelve months ended December 31, 1993 through December 31,
1996 have been restated to conform to 1998 presentation.

** This amount excludes approximately $230 million and $210 million of interest
expense not recorded for the twelve months ended December 31, 1994 and 1993.
This amount includes interest expense of $982.9 million including the write-off
of unamortized discounts on debentures recorded in 1995.

*** This amount excludes $8.6 million of interest expense not recorded with
respect to the registrant's guarantee of LESOP Trust's debentures for the twelve
months ended December 31, 1994 and 1993.


                                       36
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> OPUR1
<CIK> 0000022099
<NAME> COLUMBIA ENERGY GROUP AND SUBSIDIARIES
<SUBSIDIARY>
   <NUMBER> 1
   <NAME> CEG
<MULTIPLIER> 1,000
       
<S>                             <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1998             DEC-31-1998
<PERIOD-START>                             APR-01-1998             JAN-01-1998
<PERIOD-END>                               JUN-30-1998             JUN-30-1998
<BOOK-VALUE>                                  PER BOOK                PER BOOK
<TOTAL-NET-UTILITY-PLANT>                    3,902,400               3,902,400
<OTHER-PROPERTY-AND-INVEST>                    560,700                 560,700
<TOTAL-CURRENT-ASSETS>                       1,379,300               1,379,300
<TOTAL-DEFERRED-CHARGES>                        76,600                  76,600
<OTHER-ASSETS>                                 383,000                 383,000
<TOTAL-ASSETS>                               6,302,000               6,302,000
<COMMON>                                       833,700                 833,700
<CAPITAL-SURPLUS-PAID-IN>                      758,300                 758,300
<RETAINED-EARNINGS>                            344,000                 344,000
<TOTAL-COMMON-STOCKHOLDERS-EQ>               1,935,000               1,935,000
                                0                       0
                                          0                       0
<LONG-TERM-DEBT-NET>                         2,002,200               2,002,200
<SHORT-TERM-NOTES>                                   0                       0
<LONG-TERM-NOTES-PAYABLE>                            0                       0
<COMMERCIAL-PAPER-OBLIGATIONS>                  45,900                  45,900
<LONG-TERM-DEBT-CURRENT-PORT>                      300                     300
                            0                       0
<CAPITAL-LEASE-OBLIGATIONS>                      2,100                   2,100
<LEASES-CURRENT>                                     0                       0
<OTHER-ITEMS-CAPITAL-AND-LIAB>               2,364,800               2,364,800
<TOT-CAPITALIZATION-AND-LIAB>                6,302,000               6,302,000
<GROSS-OPERATING-REVENUE>                    1,326,800               3,174,200
<INCOME-TAX-EXPENSE>                            12,800                  80,200
<OTHER-OPERATING-EXPENSES>                   1,255,900               2,849,100
<TOTAL-OPERATING-EXPENSES>                   1,255,900               2,849,100
<OPERATING-INCOME-LOSS>                         70,900                 325,100
<OTHER-INCOME-NET>                               3,200                   5,500
<INCOME-BEFORE-INTEREST-EXPEN>                  74,100                 330,600
<TOTAL-INTEREST-EXPENSE>                        38,500                  80,100
<NET-INCOME>                                    22,800                 170,300
                          0                       0
<EARNINGS-AVAILABLE-FOR-COMM>                   22,800                 170,300
<COMMON-STOCK-DIVIDENDS>                        17,300                  31,100
<TOTAL-INTEREST-ON-BONDS>                       35,100                  70,200
<CASH-FLOW-OPERATIONS>                         120,400                 552,200
<EPS-PRIMARY>                                     0.27                    2.04
<EPS-DILUTED>                                     0.27                    2.03
        

</TABLE>


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