High Island Offshore System, L.L.C.

Third Revised Volume No. 1

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

Original Sheet No. 87 Original Sheet No. 87 : Effective

GENERAL TERMS AND CONDITIONS

(Continued)

4.4 Failure to Meet Receipt Specifications. Should any Gas

tendered for delivery to HIOS hereunder fail at any time to

conform to any of the specifications of this Article,

HIOS shall notify Shipper of any such failure, and HIOS may

at its options suspend all or a portion of the receipt of

any such Gas, and HIOS shall be relieved of its obligations

hereunder for the duration of such time as the Gas does not

meet such specifications.

4.5 Failure to Meet Delivery Specifications. Should the Gas

tendered for delivery by HIOS hereunder fail at any time to

conform to any of the specifications of this Article, HIOS

shall make a diligent effort to correct such failure by

treatment not prohibited by these General Terms and

Conditions and consistent with prudent operations and by

means which are economically feasible in HIOS'opinion so as

to deliver Gas conforming to the above specifications.

4.6 Commingling. It is recognized that Gas delivered by Shipper

will be commingled with the Gas of others in the System.

Accordingly, the Gas of Shipper shall be subject to such

changes in Btu value as may result from such commingling.

Equivalent Volumes, as referenced in the Transportation

Agreement, and as defined in Article IV, Section 4.1, 4.2

and 4.3 of the Gas Allocation Agreement, will be redelivered

for the account of Shipper.