Centerpoint Energy - Mississippi River

Third Revised Volume No. 1

Effective Date: 05/01/1997, Docket: RP97-298-000, Status: Effective

Second Revised Sheet No. 311 Second Revised Sheet No. 311 : Superseded

Superseding: First Revised Sheet No. 311

EXHIBIT A

Release Addendum Contract No. ______

Release No. ______

Master Capacity Release Agreement Between

Mississippi River Transmission Corporation

and ______________________________________

Releasing Customer's : Rate Schedule ______ Contract No. ______

Replacement Customer's: Maximum Daily Quantity (MDQ) (MMBtu/day):______________________

Term of Release:_______________________________________________

Conditions of Recall:__________________________________________

_______________________________________________________________

Other Terms and Conditions:____________________________________

_______________________________________________________________

Rates: Reservation: _______________________________________________________________

_______________________________________________________________

Usage Charge: _______________________________________________________________

_______________________________________________________________

Surcharges: ACA, GRI (when applicable), Fuel, and any other surcharges.

Point of Receipt Specified in Release Offer:

Maximum

Maximum Receipt

Receipt Point

Receipt Pressure Quantity

Point (PSIG) (MMBtu/day) Legal Description

Firm Point(s) of Receipt: Except for Rate Schedule FSS capacity released pursuant to Section 14 of the

General Terms and Conditions of MRT's FERC Gas Tariff, Third Revised Volume No. l, Replacement

Customer shall receive all Receipt Points on MRT's system as Secondary Receipt Points; however,

Customer shall be assessed any additional charges applicable to its utilization of a Secondary

Receipt Point.

Point of Delivery Specified in Release Offer:

Maximum

Maximum Delivery

Delivery Point

Delivery Pressure Quantity

Point (PSIG) (MMBtu/day) Legal Description

Firm Point(s) of Delivery: Except for Rate Schedule FSS capacity released pursuant to Section 14 of the

General Terms and Conditions of MRT's FERC Gas Tariff, Third Revised Volume No. 1, Delivery Point(s)

within those rate zones for which Releasing Customer has capacity shall be Secondary Delivery

Point(s); provided that Secondary Delivery Point(s) may only be utilized if deliveries to such points

are determined by MRT to be operationally feasible.

MRT shall not be obligated to receive from all receipt points or deliver to all delivery points a

cumulative quantity in excess of the MDQ set forth herein.