Tres Palacios Gas Storage LLC

Original Volume No. 1

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

First Revised Sheet No. 234 First Revised Sheet No. 234

Superseding: Original Sheet No. 234

INTERRUPTIBLE HOURLY BALANCING SERVICE AGREEMENT

(Continued)

(For Use Under Rate Schedule IHBS)

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 IHBS 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.

ARTICLE VI - NOTICES

Except as otherwise provided in the General Terms and Conditions

applicable to this Agreement, any notice under this Agreement

shall be in writing and may be sent by facsimile transmission or

mailed to the post office address of the Party intended to receive

the same, as follows:

TRES PALACIOS: ______________________________

______________________________

Attention: ____________________

CUSTOMER:

NOTICES: _______________________________

_______________________________

Attention: _______________________________

BILLING: ______________________________

Attention: ______________________________

or to such other address as either Party shall designate by formal

written notice to the other. In all instances, the Parties shall

use their best efforts to provide notice by facsimile prior to 5

p.m. Eastern Time. Notice received before 5 p.m. Eastern Time

shall be deemed effective the day of receipt. Notice received

after 5 p.m. Eastern Time shall be deemed effective the day

following receipt.