Centerpoint Energy Gas Transmission Company

Sixth Revised Volume No. 1

Effective Date: 05/01/2010, Docket: RP10-567-000, Status: Effective

First Revised Sheet No. 187 First Revised Sheet No. 187

Superseding: Original Sheet No. 187

RATE SCHEDULE FSS

FIRM STORAGE SERVICE

(continued)

4. FLEXIBILITY OF RATES (continued)

this Rate Schedule are specified in Transporter's Statement of Effective

Rates and Charges for Transportation of Gas, as on file and in effect

from time to time, in this Tariff. Any discount from the maximum rate

applicable to any service shall be in accordance with terms and

conditions set forth and agreed to by Transporter under an agreement for

such discounted service. Said rates are subject to adjustment as

provided in the General Terms and Conditions.

5. MONTHLY BILL:

5.1 Calculation.

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

(a) The product of the Deliverability Fee and each Dth of the

Maximum Deliverability Quantity,

(b) The product of the Capacity Fee and each Dth of the Maximum

Storage Quantity,

and received for injection into storage during the Service

Month,

(d) The product of the Overrun Rate and each Dth of Gas

scheduled during the Service Month for either injection, or

withdrawal from storage, in accordance with the Storage

Overrun Service provisions of this Rate Schedule.

5.2 Adjustments.

(a) Failure to Deliver Maximum Daily Withdrawal Quantity:

Except as provided in Section 2.10 of this Rate Schedule, if

during one or more Days in the Service Month during the

Withdrawal Period Transporter is unable to tender to a

Shipper which is paying the maximum rate the Gas nominated

and scheduled and held in storage by Transporter for the

account of Shipper, up to the applicable Maximum Daily

Withdrawal Quantity, then, for Shippers paying the maximum

rate, the bill for the Service Month shall be