Centerpoint Energy - Mississippi River

Third Revised Volume No. 1

Effective Date: 01/21/2008, Docket: RP08-135-000, Status: Effective

Fourth Revised Sheet No. 39 Fourth Revised Sheet No. 39 : Effective

Superseding: Third Revised Sheet No. 39

RATE SCHEDULE FSS

FIRM STORAGE SERVICE

(Continued)

3. INJECTIONS (Continued)

"MIQ" or "Maximum Injection Quantity" equals the Customer's total injections

scheduled for the current injection cycle. "MSQ" or "Maximum Stored Quantity"

equals the stored gas in the Customer's account at the start of the injection

cycle plus the Customer's MIQ, not to exceed the Customer's contracted storage

capacity.

3.2 Each Rate Schedule FSS Customer must provide MRT with written

notice of its MIQ by the end of the gas day of May 16 of each year. Once

submitted, the MIQ cannot be reduced, but it can be increased effective on the

first day of any month during the injection cycle upon thirty (30) days prior

written notice to MRT. In no event will a Customer be entitled to exceed the

maximum injection rates set forth in Section 3.1 hereof or to exceed its MSQ.

3.3 Customers must nominate daily injections in accordance with the

nomination procedures and deadlines set forth in Section 8 of the General

Terms and Conditions.

3.4 Each Rate Schedule FSS Customer will be required to meet the

minimum monthly injection requirements set forth in the injection schedule

under Section 3.1 (or, if applicable, Section 9.1). If a Customer's monthly

injections are deficient by more than 5% of its minimum monthly injection

requirement and such deficiencies are not the result of operational

constraints on MRT's system, the Customer shall pay a penalty of $10.00 per

Dth for quantities which it fails to inject which exceed the 5% tolerance.

4. WITHDRAWALS

4.1 Rate Schedule FSS Customers shall withdraw their gas from storage

in accordance with the following withdrawal schedule: