Petal Gas Storage Company

Original Volume No. 1

Effective Date: 10/01/2002, Docket: RP02-435-000, Status: Pending

Third Revised Sheet No. 54 Third Revised Sheet No. 54 : Pending

Superseding: Second Revised Sheet No. 54

ISS RATE SCHEDULE

INTERRUPTIBLE STORAGE SERVICE (Continued)

7.2 Petal shall have the right to propose to the FERC or other governing

regulatory body such changes in its rates and terms of service as it

deems necessary, and this Agreement shall be deemed to include any

changes which are made effective pursuant to order or regulation or

provisions of law, without prejudice to Customer's right to protest the

same; provided however, that any negotiated rates between Petal and its

Customer(s) shall remain in effect during the term of the ISS

Agreement(s).

8. CURTAILMENT

If, due to any cause whatsoever, Petal's capability to receive or deliver

volumes is impaired so that Petal is unable to receive or deliver the volumes

provided for in its ISS Agreements with Customers, then capacity, withdrawals,

and/or injections will be allocated according to the priority of service as set

forth in Section 4 of the General Terms and Conditions of this Tariff.

9. EXPIRATION OF TERM

At least thirty (30) Business Days prior to the end of the primary term or any

renewed term of the Customer's ISS Agreement, Petal shall notify Customer to

withdraw all of the ISS gas quantities held in storage by Petal for the account

of Customer. If Customer fails to withdraw all of the ISS storage gas by the

end of the term, then Petal may take, free and clear of any adverse claims,

title to such ISS storage quantities as Customer was required to withdraw, and

Petal shall be able to sell such ISS gas. Petal's notice to Customer may be

given verbally, but shall be confirmed in writing or via Petal's Internet

website. If Customer was unable to withdraw its ISS gas quantities due to an

interruption of Customer's withdrawal service during the last ten days before

termination, Customer shall be allowed to withdraw its remaining gas at a

schedule to be determined by Petal.