High Island Offshore System, L.L.C.

Third Revised Volume No. 1

Effective Date: 10/01/2009, Docket: RP09-487-001, Status: Effective

Substitute Fourth Revised Sheet No. 15 Substitute Fourth Revised Sheet No. 15

Superseding: Substitute Third Revised Sheet No. 15

RATE SCHEDULE FT-1

FIRM TRANSPORTATION SERVICE

(Continued)

(a) The reservation charge shall be the product of Shipper's MBQ and

Transporter's effective Long Haul or Short Haul reservation rate

per Dth, as applicable, for FT-1 service, as set forth on Sheet

No. 10 of this Tariff. For purposes of this calculation, the MBQ

shall be equal to the peak day deliveries by Transporter for

Shipper during the applicable Month, but in no event shall the

MBQ be less than 90% of the MDQ, or more than 100% of the MDQ

specified in the Transportation Agreement.

(b) The commodity charge shall be the sum of the product of the

monthly volumes of gas expressed in Dth received by HIOS from

Shipper, or for the account of Shipper, at the Points of

Receipt set forth in Exhibits A and B of the Transportation

Agreement, and HIOS' effective Long Haul or Short Haul

commodity rate per Dth, as applicable, as set forth on Sheet

No. 10 of this Tariff.

4.2 Partial Month's Service. If at the commencement or termination of the

Transportation Agreement, service is provided for only a portion of a

month, then the monthly reservation charge for such month shall be

reduced proportionately based on the ratio of the number of days that

transportation service was not in effect to the total number of days in

each month.