1 Exhibit 10-CP AMENDMENT NO. 1 TO THE U.S. $900,000,000 CREDIT AGREEMENT DATED AS OF MARCH 11, 1998 THIS AMENDMENT NO. 1, dated as of February 15, 2000 (this "Amendment No. 1") to the Credit Agreement, dated as of March 11, 1998 (the "Agreement") among Columbia Energy Group, a Delaware corporation (the "Borrower"), the banks, financial institutions and other institutional lenders listed on the signature page of the Agreement (collectively, the "Lenders") and Citibank N.A., as administrative and syndication agent for the Lenders, evidences the agreement of the parties as follows: WHEREAS, the Borrower and the Required Lenders desire to amend the Agreement in accordance with Section 8.01 thereof. NOW, THEREFORE, in consideration of the foregoing and the respective covenants, agreements and conditions hereinafter set forth, and intending to be legally bound hereby, the parties hereto agree as follows: SECTION 1. Amendment to Agreement. Section 6.01(h) of the Agreement is amended to delete the following text therefrom: "(iii) any Person or two or more Persons acting in concert shall have acquired by contract or otherwise (excluding employment contracts with officers of the Borrower) or shall have entered into a contract or arrangement (excluding employment contracts with officers of the Borrower), that, upon consummation, will result in its or their acquisition of the power to exercise, directly or indirectly, a controlling influence over the management or policies of the Borrower; or" SECTION 2. Capitalized Terms. Capitalized terms used but not otherwise defined in this Amendment No. 1 shall have the respective meanings ascribed to such terms in the Agreement. 2 SECTION 3. Execution in Counterparts. This Amendment No. 1 may be executed in any number of counterparts and by different parties hereto on separate counterparts, each of which when so executed shall be deemed to be an original and all of which taken together shall constitute but one and the same agreement. Delivery of an executed counterpart of a signature page to this Amendment No. 1 by telecopier shall be effective as delivery of a manually executed counterpart of this Amendment No. 1. SECTION 4. Governing Law. This Amendment No. 1 shall be governed by, and construed in accordance with the laws of the State of New York. SECTION 5. Jurisdiction, Etc. (a) Each of the parties hereto hereby irrevocably and unconditionally submits, for itself and its property, to the nonexclusive jurisdiction of any New York State court or federal court of the United States of America sitting in New York City, and any appellate court for any thereof, in any action or proceeding arising out of or relating to this Agreement or the Notes, or for recognition or enforcement of any judgment, and each of the parties hereto hereby irrevocably and unconditionally agrees that all claims in respect of any such action or proceeding may be heard and determined in any such New York State court or, to the extent permitted by law, in such federal court. Each of the parties hereto agrees that a final judgment in any such action or proceeding shall be conclusive and may be enforced in other jurisdictions by suit on the judgment or in any other manner provided by law. Nothing in this Agreement shall affect any right that any party may otherwise have to bring any action or proceeding relating to this Agreement or the Notes in the courts of any jurisdiction. (b) Each of the parties hereto irrevocably and unconditionally waives, to the fullest extent it may legally and effectively do so, any objection that it may now or hereafter have to the laying of venue of any suit, action or proceeding arising out of or relating to this Agreement or the Notes in any New York State or federal court. Each of the parties hereto hereby irrevocably waives, to the fullest extent permitted by law, the defense of an inconvenient forum to the maintenance of such action or proceeding in any such court. SECTION 6. Severability of Provisions. Any provision of this Agreement which is prohibited or unenforceable in any jurisdiction shall, as to such jurisdiction, be ineffective to the extent of such prohibition or unenforceability without invalidating the remaining provisions hereof or affecting the validity or enforceability of such provision in any other jurisdiction. 3 IN WITNESS WHEREOF, the parties hereto have caused this Amendment No. 1 to be executed by their respective officers thereunto duly authorized, as of the date first above written. COLUMBIA ENERGY GROUP By: /s/ Michael W. O'Donnell ______________________________ Name: Michael W. O'Donnell Title: Senior Vice President Chief Financial Officer SALOMON SMITH BARNEY INC. as Arranger and Book Manager By: /s/ J. Christopher Lyons ______________________________ Name: J. Christopher Lyons Title: Attorney-in-Fact CITIBANK, N.A. as Administrative and Syndication Agent By: /s/ J. Christopher Lyons ______________________________ Name: J. Christopher Lyons Title: Attorney-in-Fact Lenders CITIBANK, N.A. By: /s/ J. Christopher Lyons ______________________________ Name: J. Christopher Lyons Title: Attorney-in-Fact THE CHASE MANHATTAN BANK By: /s/ Steven Wood ______________________________ Name: Steven Wood Title: Vice President 4 PNC BANK, NATIONAL ASSOCIATION By: /s/ Thomas A. Majeski ______________________________ Name: Thomas A. Majeski Title: Vice President BANK OF MONTREAL By: /s/ Ian M. Plester ______________________________ Name: Ian M. Plester Title: Director CANADIAN IMPERIAL BANK OF COMMERCE By: /s/ M. Beth Miller ______________________________ Name: M. Beth Miller Title: Authorized Signatory FIRST UNION NATIONAL BANK By: /s/ Michael J. Kolosowsky ______________________________ Name: Michael J. Kolosowsky Title: Vice President BANKERS TRUST COMPANY By: ______________________________ Name: Title: BANK ONE By: /s/ George R. Schanz ______________________________ Name: George R. Schanz Title: First Vice President 5 MORGAN GUARANTY TRUST COMPANY OF NEW YORK By: /s/ Robert Bottamedi ______________________________ Name: Robert Bottamedi Title: Vice President ALLFIRST BANK By: /s/ Shaun E. Murphy ______________________________ Name: Shaun E. Murphy Title: Senior Vice President NATIONAL CITY BANK By: /s/ Gregory D. Miller ______________________________ Name: Gregory D. Miller Title: Vice President COMMERZBANK AG, NEW YORK BRANCH By: /s/ Andrew Kjoller Timothy Chin ______________________________ Name: Andrew Kjoller Timothy Chin Title: Assistant Vice President NATIONSBANK, N.A. By: /s/ Paula Z. Kramp ______________________________ Name: Paula Z. Kramp Title: Principal ARAB BANK, PLC By: ______________________________ Name: Title: 6 THE BANK OF NOVA SCOTIA By: /s/ F.C.H. Ashby ______________________________ Name: F.C.H. Ashby Title: Senior Manager Loan Operations BANK OF TOKYO-MITSUBISHI TRUST COMPANY By: /s/ Nicholas R. Battista ______________________________ Name: Nicholas R. Battista Title: Vice President CREDIT AGRICOLE By: ______________________________ Name: Title: CRESTAR BANK By: /s/ Nancy R. Petrash ______________________________ Name: Nancy R. Petrash Title: Senior Vice President BANCA MONTE DEI PASCHI DI SIENA, S.p.A. By: ______________________________ Name: Title: SOCIETE GENERALE By: /s/ Gordon R. Eadon ______________________________ Name: Gordon R. Eadon Title: Director 7 UNION BANK OF CALIFORNIA By: /s/ David Musicant ______________________________ Name: David Musicant Title: Vice President