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. 62 Original Sheet No. 62 : Effective

FORM OF TRANSPORTATION AGREEMENT

(For Use Under Transporter's Rate Schedule IT)

Continued)

EXHIBIT A

Maximum Daily Quantity: _____ Dth

Points of Receipt 1/

-----------------

Maximum Daily

Long Haul Volume in Minimum

Location Dth 2/ Pressure

--------------------------------- ------------- --------

Points of Delivery

------------------

Maximum Daily

Long Haul

Volume in Minimum

Location Dth Pressure

-------------------------------- ------------- --------

_____________________

1/ See subsections 6.2 and 6.3 of Section 6 of the General Terms

and Conditions for the definitions of Primary Points of Receipt

and Secondary Points of Receipt, respectively.

2/ The sum of the Maximum Daily Volumes must equal the Maximum

Daily Quantity.