Centerpoint Energy - Mississippi River

Third Revised Volume No. 1

Effective Date: 01/19/2005, Docket: RP05-129-000, Status: Effective

Seventh Revised Sheet No. 149 Seventh Revised Sheet No. 149 : Effective

Superseding: Sixth Revised Sheet No. 149

GENERAL TERMS AND CONDITIONS

(Continued)

10. TRANSPORTATION BALANCING (Continued)

(vii) Any imbalances resulting from revised flow information that

are determined after the transportation or storage for that month has

been billed will be cashed out at the average of the applicable Index

Buy and Index Sell prices for the month being adjusted after any

necessary revised NNT storage adjustments have been made. However, if

the adjusted imbalance is in the opposite position than the original

imbalance (i.e., original imbalance was over-deliveries and adjusted

imbalance was over-receipts or vice versa) then the adjusted imbalance

will be credited or charged at the original Index Buy or Index Sell

Price, up to the original imbalance, and any remaining adjusted

imbalance will be credited or charged at such average price.

(viii) No imbalance penalty should be imposed when a prior period

adjustment applied to the current period causes or increases a current

month penalty.

10.4 Gas Trading Program

(a) The Gas Trading Program will be available to permit

one Customer to trade gas with another Customer to offset

imbalances incurred during the same month. All imbalance trades

shall operate to reduce imbalances for both Customers involved,

and no imbalance trade shall create or increase an imbalance for a

Customer.

(b) Once a Customer has been notified of its prior month

imbalance as provided in Section 10.3(a) above, a Customer may

request that MRT post on its Internet web site the imbalance

quantity, zone and whether the imbalance quantity is owed to MRT

or to the Customer. Such request shall be made electronically via

the Internet in the form prescribed by MRT. In such case,

provided such notification is received prior to 11:45 a.m. on a

business day, MRT will post Customer's imbalance no later than

8:00 a.m. on the next business day. Additionally, a Customer may

notify MRT prior to the time of imbalance notification that

Customer desires to have its imbalance for the month posted and

MRT will post such imbalance on or before the ninth (9th) business

day of the month next following. Customer shall specify the date

through which its imbalances are to be posted and shall provide a

name, telephone number and e-mail address of a contact person.

Customers shall have the ability to view and download such

postings. Parties interested in negotiating a trade must contact

directly the posting Customer.