1 Exhibit 10.28 FIRST AMENDMENT TO CREDIT AGREEMENT THIS FIRST AMENDMENT TO CREDIT AGREEMENT (herein called this "Amendment") is made as of March 27, 2001 by and between North Coast Energy, Inc., a Delaware corporation ("Borrower"), and Union Bank of California, N.A., as Agent (herein called "Agent"), and the other Lenders from time to time parties to the Credit Agreement (as defined below). W I T N E S S E T H: WHEREAS, Borrower, Agent and Lenders have entered into that certain Credit Agreement dated as of September 26, 2000 (as amended, supplemented, or restated to the date hereof, the "Original Agreement"), for the purposes and consideration therein expressed, pursuant to which Lenders became obligated to make loans to Borrower as therein provided; and WHEREAS, Borrower, Agent, and Lenders desire to amend the Original Agreement as provided herein. NOW, THEREFORE, in consideration of the premises and the mutual covenants and agreements contained herein and in the Original Agreement, in consideration of the loans which may hereafter be made by Lenders to Borrower, and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto do hereby agree as follows: ARTICLE I. DEFINITIONS AND REFERENCES Section 1.1 TERMS DEFINED IN THE ORIGINAL AGREEMENT. Unless the context otherwise requires or unless otherwise expressly defined herein, the terms defined in the Original Agreement shall have the same meanings whenever used in this Amendment. Section 1.2. OTHER DEFINED TERMS. Unless the context otherwise requires, the following terms when used in this Amendment shall have the meanings assigned to them in this Section 1.2. "AMENDMENT" means this First Amendment to Credit Agreement. "CREDIT AGREEMENT" means the Original Agreement as amended hereby. ARTICLE II. AMENDMENT TO ORIGINAL AGREEMENT Section 2.1. HEDGING CONTRACTS. Each reference to "seventy-five percent (75%)" in Section 7.3(a) of the Original Agreement is hereby amended to read "eighty-five percent (85%)". 2 ARTICLE III. CONDITIONS OF EFFECTIVENESS Section 3.1. CONDITIONS OF EFFECTIVENESS. This Amendment shall become effective as of the date first above written when and only when each of the following conditions shall have been satisfied: (a) Agent shall have received, at Agent's office, each of the following in form, substance and date satisfactory to Agent: (i) a counterpart of this Amendment executed and delivered by Borrower and Majority Lenders; and (ii) a certificate of a duly authorized officer of Borrower dated the date of this Amendment certifying: (A) that all of the representations and warranties set forth in Section 4.1 hereof are true and correct at and as of the time of such effectiveness; and (B) as to such other corporate matters as Agent shall deem necessary; and (b) Agent shall have additionally received such other documents as Agent may reasonably request. ARTICLE IV. REPRESENTATIONS AND WARRANTIES Section 4.1. REPRESENTATIONS AND WARRANTIES OF BORROWER. In order to induce Agent and Lenders to enter into this Amendment, Borrower represents and warrants as of the date on which this Amendment becomes effective to Agent that: (a) The representations and warranties contained in Article V of the Credit Agreement are true and correct at and as of the time of the effectiveness hereof. (b) Each Restricted Person is duly authorized to execute and deliver each Loan Document to which it is a party and Borrower is and will continue to be duly authorized to borrow and to perform its obligations under the Credit Agreement. Each Restricted Person has duly taken all corporate action necessary to authorize the execution and delivery of each Loan Document to which it is a party and to authorize the performance of the obligations of it hereunder and thereunder. (c) The execution and delivery by each Restricted Person of the Loan Documents to which it is a party, the performance by each Restricted Person of its obligations hereunder and thereunder, and the consummation of the transactions contemplated hereby and thereby do not and will not conflict with any provision of law, statute, rule or regulation or of the articles of incorporation and bylaws of any Restricted Person, or of any material agreement, judgment, license, order or permit applicable to or binding upon any Restricted Person, or result in the creation of any lien, charge or encumbrance upon any assets or properties of any Restricted Person. Except for those -2- 3 which have been duly obtained, no consent, approval, authorization or order of any court or governmental authority or third party is required in connection with the execution and delivery by any Restricted Person of the Loan Documents to which it is a party, or to consummate the transactions contemplated hereby and thereby. (d) When duly executed and delivered, each of this Amendment and each Loan Document (as amended or affected by this Amendment) will be a legal and binding instrument and agreement of each Restricted Person that is a party thereto, enforceable in accordance with its terms, except as limited by bankruptcy, insolvency and similar laws applying to creditors' rights generally and by principles of equity applying to creditors' rights generally. (e) The audited quarterly financial statements of Borrower dated as of December 31, 2000 fairly present the financial position at such dates and the statement of operations and the changes in financial position for the periods ending on such dates for Borrower. Copies of such financial statements have heretofore been delivered to Agent. Since December 31, 2000, no material adverse change has occurred in the financial condition or businesses of Borrower. ARTICLE V. MISCELLANEOUS Section 5.1. RATIFICATION OF AGREEMENTS. Each Loan Document, as amended or affected hereby, is hereby ratified and confirmed in all respects. Any reference to the Credit Agreement in any Loan Document shall be deemed to refer to this Agreement also. The execution, delivery and effectiveness of this Amendment shall not, except as expressly provided herein or therein, operate as a wavier of any right, power or remedy of Agent or Lenders under the Credit Agreement or any other Loan Document nor constitute a waiver of any provision of the Credit Agreement or any other Loan Document. Section 5.2. SURVIVAL OF AGREEMENTS. All representations, warranties, covenants and agreements of Borrower herein shall survive the execution and delivery of this Amendment and the performance hereof, including without limitation the making or granting of the Loan, and shall further survive until all of the Obligations are paid in full. All statements and agreements contained in any certificate or instrument delivered by any Restricted Person hereunder or under the Credit Agreement to Agent shall be deemed to constitute representations and warranties by, or agreements and covenants of, Borrower under this Amendment and under the Credit Agreement. Section 5.3. LOAN DOCUMENTS. This Amendment is a Loan Document, and all provisions in the Credit Agreement pertaining to Loan Documents apply hereto and thereto. -3- 4 Section 5.4. GOVERNING LAW. This Amendment shall be governed by and construed in accordance with the laws of the State of Texas and any applicable laws of the United States of America in all respects. including construction, validity and performance. Section 5.5. COUNTERPARTS. This Amendment may be separately executed in counterparts and by the different parties hereto in separate counterparts, each of which when so executed shall be deemed to constitute one and the same Amendment. THIS AMENDMENT AND THE OTHER LOAN DOCUMENTS REPRESENT THE FINAL AGREEMENET BETWEEN THE PARTIES AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS, OR SUBSEQUENT ORAL AGREEMENTS OF THE PARTIES. THERE ARE NO UNWRITTEN ORAL AGREEMENTS OF THE PARTIES. -4- 5 IN WITNESS WHEREOF, this Amendment is executed as of the date first above written. NORTH COAST ENERGY, INC. By: /s/ Omer Yonel ------------------------------------- Omer Yonel Chief Executive Officer UNION BANK OF CALIFORNIA, N.A., as Agent and Lender By: /s/ Randall L. Osterberg ------------------------------------- Name: Randall L. Osterberg Title: Senior Vice - President BANK ONE, NA (Main Office Chicago), Lender By: /s/ Charles Kingswell-Smith ------------------------------------- Name: Charles Kingswell-Smith Title: First Vice President COMERICA BANK-TEXAS, Lender By: /s/ H. Vadgama ------------------------------------- Name: Huma Vadgama Title: Corporate Banking Officer FORTIS CAPITAL CORP., Lender By: /s/ Deirdre Sanborn ------------------------------------- Name: Deirdre Sanborn Title: Vice President By: /s/ John C. Preneta ------------------------------------- Name: John C. Preneta Title: Executive Vice President -5-