High Island Offshore System, L.L.C.

Third Revised Volume No. 1

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Effective Date: 04/07/1999, Docket: GT99- 17-000, Status: Effective

Original Sheet No. 188 Original Sheet No. 188 : Effective

HIGH ISLAND OFFSHORE SYSTEM, L.L.C.

FIRM SHIPPER

CAPACITY RELEASE FORM

Prearranged Transaction

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(Continued)

B. Specify Terms or Conditions of Interruption or Recall Capacity Release (Refer to

subsections 17.2(e) and 17.12(e) of the General Terms and Condition of this

Tariff)

_________________________________________________________________

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_________________________________________________________________

________________________________________________________________

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C. Date of proposed commencement of capacity release: ______________

Date of proposed termination of capacity release: _______________

3. Minimum Reservation Charge per Dth to be paid for released capacity (not to

exceed the current maximum reservation fee as listed on page 10 of tariff)

$ _________________ per Dth

4. Releasing Shipper's Contract Demand

A. Current Maximum Daily Quantity (MDQ)

Long Haul _________________ Dth per day

Short Haul _________________ Dth per day

B. Requested Maximum Daily Quantity (MDQ) for Capacity Release

(Complete Item 5 first; then give the sum of volumes here)

________________ Dth per day

C. Releasing Shipper's Remaining Maximum Daily Quantity (MDQ)

(Complete Item 7 first; then give the sum of volumes here)

________________ Dth per day