August 9, 1995 Mr. John Rudiak Connecticut Natural Gas Corporation 100 Columbus Boulevard; P.O. Box 1500 Hartford, Connecticut 06144-1500 Re: Amendment No.1-A to Gas Storage Contract Dated December 1, 1994 Service Package No.1626 Dear John: TENNESSEE GAS PIPELINE COMPANY and CONNECTICUT NATURAL GAS CORP (CNG) agree to amend the above referenced gas storage contract effective July 1, 1995, to increase the Maximum Daily Withdrawal Quantity (MDWQ) when Shipper's storage balance is equal to or less than 30% of the Maximum Storage Quantity (MSQ) and 20% of the MSQ, respectively, as reflected in the attached Exhibit A-1 and as described below. The parties agree to amend Article I of the subject gas storage contract as follows: Following the commencement of services hereunder, in accordance with the terms of Transporter's Rate Schedule FS, and of this Agreement, Transporter shall receive for injection for Shipper's account a daily quantity of gas up to Shipper's Maximum Injection Quantity of 4,067 dekatherms (Dth) and Maximum Storage Quantity (MSQ) of 610,003 (Dth) (on a cumulative basis) and on demand shall withdraw from Shipper's storage account and deliver to Shipper a daily quantity of gas up to Shipper's Maximum Daily Withdrawal Quantity (MDWQ) of 13,826 Dth; provided, however, that when Shipper's storage balance is equal to or less than 30% of the MSQ but greater than 20% of the MSQ, the Maximum Daily Withdrawal Quantity shall be 8,687 Dth; and provided further, that when Shipper's storage balance is less than or equal to 20% of the MSQ, the Maximum Daily Withdrawal Quantity shall be 5,212 Dth. For demand charge purposes, the MDWQ for balances greater than 30% of the MSQ shall be used. Except as amended herein, all terms and provisions of the above referenced gas storage contract shall remain in full force and effect as written. If the foregoing is in accordance with your understanding of our agreement, please so indicate by signing and returning to my attention both originals of this letter. Upon Tennessee's execution, an original will be forwarded to you for your files. August 9, 1995 CONNECTICUT NATURAL GAS CORP Page 2 Contract number: 1626 Amendment number: 1-A Amendment effective date: July 1, 1995 Should you have any questions, please do not hesitate to contact me at (713) 757-2828. Sincerely, Alan Cook Account Manager ACCEPTED AND AGREED TO This ___ day of ________, 19__. TENNESSEE GAS PIPELINE COMPANY By: L. C. Kaestner ------------------------------ Title: Agent and Attorney in Fact Date: April 11, 1996 ACCEPTED AND AGREED TO This ___ Day of _________, 19__. CONNECTICUT NATURAL GAS CORP By: Edna M. Karanian ------------------------------ Title: Assistant Vice President --------------------------- Date: March 19, 1996 ---------------------------- GAS STORAGE SERVICE AGREEMENT EXHIBIT "A-1" SHOWING REQUESTED CHANGES AMENDMENT #1-A TO GAS STORAGE CONTRACT DATED December 1, 1994 BETWEEN TENNESSEE GAS PIPELINE COMPANY AND CONNECTICUT NATURAL GAS CORPORATION SERVICE PACKAGE MSQ: 610,003 Dth MAXIMUM DAILY INJECTION QUANTITY: 4,067 Dth MAXIMUM DAILY WITHDRAWAL QUANTITY (MDWQ): STORAGE BALANCE STORAGE BALANCE MAXIMUM DAILY WITHDRAWAL FROM DTH TO DTH QUANTITY DTH 183,002 610,003 13,826 Ratchet 0 122,002 183,001 8,687 Ratchet 1 0 122,001 5,212 Ratchet 2 SERVICE POINT: Compressor Station 313 INJECTION METER: 060018 TGP-NORTHERN STORAGE INJECTION WITHDRAWAL METER: 070018 TGP-NORTHERN STORAGE WITHDRAWAL STORAGE STORAGE MDIQ METER METER NAME COUNTY ST ZONE I/W LEG BALANCE FROM BALANCE TO MDWQ 060018 TGP-NORTHERN STORAGE INJECTION POTTER PA 04 I 300 4,067 070018 TGP-NORTHERN STORAGE WITHDRAWAL POTTER PA 04 W 300 183,002 610,003 13,826 Ratchet 0 122,002 183,001 8,687 Ratchet 1 0 122,001 5,212 Ratchet 2