Centerpoint Energy Gas Transmission Company

Sixth Revised Volume No. 1

Effective Date: 02/28/2003, Docket: RP03-239-000, Status: Effective

Original Sheet No. 164 Original Sheet No. 164 : Effective

RATE SCHEDULE RSS

REVERSE STORAGE SERVICE

(continued)

7. MONTHLY BILL:

7.1 Calculations. The bill for a Service Month shall be the sum of:

(a) The product of the applicable Reservation Fee (the

Reservation Fee shall be dependent on the MSWQ option

selected and whether Shipper elects an optional billing

pattern) and each Dth of Maximum Daily Withdrawal Quantity;

and

(b) The Commodity Rate, multiplied by the total Dth of Gas

delivered during the Service Month under the Service

Agreement.

scheduled during the Service Month for either transportation

and injection, or withdrawal from storage and transportation

to the Delivery Point(s), in accordance with the Overrun

Service provisions of this Rate Schedule.

7.2 Overrun Service. During the Reverse Withdrawal Period,

Transporter may (but is not obligated to), upon request from

Shipper, withdraw and deliver as authorized Overrun Service those

quantities in excess of a Shipper's MDWQ and/or MSWQ. Transporter

may (but is not obligated to), upon request from Shipper, receive

for injection hereunder during the Reverse Injection Period as

authorized Overrun Service quantities in excess of Shipper's MDIQ.

Such requests can be granted when, in Transporter's reasonable

judgment, the capacity, operating capability and management of Gas

and storage operations on its system will permit without impairing

the ability of Transporter to meet its other service obligations

of higher priority; provided, however, that in no event will

Shipper be allowed to inject by the end of the Reverse Injection

Period a quantity of Gas which does not equal Shipper's RSS

Balance as of the end of October.