Centerpoint Energy Gas Transmission Company

Sixth Revised Volume No. 1

Effective Date: 08/27/2008, Docket: RP08-456-000, Status: Effective

First Revised Sheet No. 75 First Revised Sheet No. 75

Superseding: Original Sheet No. 75

RATE SCHEDULE HFT

HOURLY FIRM TRANSPORTATION SERVICE

(continued)

4. MONTHLY BILL (continued)

Excess Contract Quantities under this Rate Schedule are

categorized by percentage of Shipper's Contract Limitations or

other authorized amount, as follows:

greater than 102% but less than or equal to 105%;

greater than 105% but less than or equal to 110%;

and greater than 110%.

For a Service Month in which Excess Contract Quantities are

transported, Shipper shall be billed the sum of the products of

(i) the Excess Contract Quantities within each of the above

specified percentage ranges, multiplied by (ii) the applicable

Excess Contract Quantities Rate, as specified in Transporter's

Statement of Effective Rates and Charges for Transportation of

Gas contained in this Tariff. In the event that Transporter

has invoked the provisions of Section 20 of the General Terms

and Conditions, the higher charges shown on Transporter's

Statement of Effective Rates and Charges for Transportation of

Gas for the Excess Contract Quantities will be assessed. If

Transporter has not invoked the provisions of Section 20 of the

General Terms and Conditions, it will not assess Excess

Contract Quantities penalties until it has first given the

affected Shipper(s) twenty-four (24) hours' notice, which

notice shall be, in Transporter's sole discretion

notwithstanding any other provisions contained in this Tariff,

via facsimile, telephone (including a message via voice mail or

other messaging) or e-mail, or otherwise during the scheduling

process via the Internet. Transporter may waive all or part of

any such charges.

4.3 Overrun Gas:

(a) Authorized Overrun: Shipper may request, in accordance with

the provisions of this Rate Schedule and nominate, in

accordance with Section 5 of the General Terms and Conditions,

quantities of gas for any applicable time period during the

Service Month in excess of the Contract Limitations.