Tres Palacios Gas Storage LLC

Original Volume No. 1

Effective Date: 07/25/2009, Docket: RP09-260-000, Status: Effective

First Revised Sheet No. 227 First Revised Sheet No. 227

Superseding: Original Sheet No. 227

INTERRUPTIBLE STORAGE SERVICE AGREEMENT

(Continued)

(For Use Under Rate Schedule ISS)

ARTICLE III - PRICE

3.1. Customer agrees to pay TRES PALACIOS the charges set forth

on Exhibit "A" hereto for all Gas storage service furnished to

Customer hereunder.

3.2. Customer further agrees to pay TRES PALACIOS all other

applicable fees and charges as set forth in the General Terms and

Conditions and in Rate Schedule ISS.

3.3. Customer shall reimburse TRES PALACIOS for all applicable

taxes as may be assessed against TRES PALACIOS for the receipt,

injection, storage, withdrawal and/or delivery of Customer's Gas.

In addition, Customer shall reimburse TRES PALACIOS for Customer's

pro rata portion, calculated using the same methodology as that

used to assess the tax, of all ad valorem taxes, property taxes

and/or other similar taxes on Customer's gas in storage assessed

against and paid by TRES PALACIOS.

ARTICLE IV - INCORPORATION OF RATE SCHEDULE AND TARIFF PROVISIONS

This Agreement shall be subject to the terms and conditions

specified in TRES PALACIOS' Rate Schedule ISS and the provisions

of TRES PALACIOS' FERC Gas Tariff, as filed with the Federal

Energy Regulatory Commission, together with the General Terms and

Conditions applicable thereto (including any changes in said Rate

Schedule, Tariff or General Terms and Conditions as may from time

to time be filed and made effective by TRES PALACIOS).

ARTICLE V - TERM OF AGREEMENT

This Agreement shall be effective as of__________, ____, and

shall remain in force and effect until _________, ____ (the

"Primary Term"); provided that this Agreement shall remain in

effect until the expiration of any transaction(s) executed by the

parties pursuant to this Agreement.