High Island Offshore System, L.L.C.

Third Revised Volume No. 1

Effective Date: 09/01/2000, Docket: RP00-439-000, Status: Effective

Second Revised Sheet No. 97 Second Revised Sheet No. 97 : Effective

Superseding: First Revised Sheet No. 97

GENERAL TERMS AND CONDITIONS

(Continued)

Unless otherwise agreed to, HIOS shall provide Shippers and point

operators, via HIOS' Interactive Internet Website, the quantities that

have been scheduled to flow for that Shipper and point operator in

accordance with Section 7.2 (2)-(4). If HIOS finds a discrepancy in

such nominated supply during confirmation of the nominated gas volumes,

then HIOS shall so notify the Shipper(s) or Shipper's Nominating Agent,

and upon such notice, HIOS has the right to change the Shipper's

nomination to match with the receipts and deliveries confirmed by the

upstream and downstream parties. HIOS will notify the Shipper(s) or

Shipper's Nominating Agent of any changes to its nomination made by HIOS

because of discrepancies with the receipts and deliveries confirmed by

the upstream parties and/or the downstream parties during the

confirmation process.

7.5 Designated Allocator. HIOS assumes that the production operator at the

specific HIOS measurement point will be the Designated Allocator, unless

appropriately notified of an alternate party. The production operator

shall be the only party allowed to appoint an alternate Designated

Allocator and shall do so by providing HIOS with written notification,

communicated by mail or facsimile, specifying the name, address, telephone

number and facsimile number of the alternate party. The alternate party

will remain as the Designated Allocator until revoked or changed, in

writing, by the production