Petal Gas Storage, L. L. C.

Original Volume No. 1

Effective Date: 06/01/2002, Docket: RP02-332-000, Status: Effective

First Revised Sheet No. 215 First Revised Sheet No. 215 : Effective

FORM OF ADVANCING SERVICE AGREEMENT

THIS AGREEMENT made this ___ day of ________, ___ by and between Petal Gas Storage,

L.L.C., a Delaware limited liability corporation (hereinafter called "Petal") and

___________________ (hereinafter called "Customer").

WITNESSETH

That in consideration of the mutual covenants herein contained, Petal and Customer

agree that Petal will advance natural gas for Customer during the term, at the rates

and on the terms and conditions hereinafter provided.

ARTICLE I - SCOPE AND QUANTITIES

1. Petal's service hereunder shall be subject to receipt of all requisite

regulatory authorizations from the Federal Energy Regulatory Commission

("Commission"), or any successor regulatory authority, and any other necessary

governmental organizations, in a manner and form acceptable to Petal.

2. Subject to the terms and conditions of this Agreement and Appendix 1 attached

hereto, Petal, upon Customer's request, may deliver or cause to be delivered to

Customer on an interruptible basis, Gas up to the Maximum Advancing Quantity,

less Petal's Fuel Reimbursement.

3. Subject to the terms and conditions of this Agreement and Appendix 1 attached

hereto, Customer agrees to redeliver or cause to be redelivered Equivalent

Quantities of Gas up to the Advancing Account Balance plus Petal's Fuel

Reimbursement.

ARTICLE II - DELIVERY AND RECEIPT POINTS

The point(s) at which the gas is to be tendered by Petal to Customer under this

Agreement shall be appropriately designated as such on Appendix 1, as Delivery

Point(s).

The point(s) at which the gas is to be tendered by Customer to Petal under this

Agreement shall be appropriately designated as such on Appendix 1, as Receipt

Point(s).