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. 109 Original Sheet No. 109 : Effective

GENERAL TERMS AND CONDITIONS

(Continued)

9. RECEIPT AND DELIVERY PRESSURE

9.1 Pressure at the Points of Receipt. Shipper shall cause the

gas to be delivered at the Points of Receipt at a pressure

sufficient to allow the Gas to enter the System, provided

Shipper shall, except by mutual agreement, be required to

deliver the Gas at the Points of Receipt at a pressure in

excess of the pressure specified for each Point of Receipt

set forth in Exhibits A and B of the Transportation

Agreement.

9.2 Pressure at Points of Delivery. HIOS shall cause the Gas to

be delivered at the Points of Delivery set forth in the

Transportation Agreement at such uniform pressures as may be

required to allow the Gas to enter the facilities of others

for further transportation. HIOS, however, shall not be

required or permitted to deliver Gas at a pressure in excess

of the pressure specified for each Point of Delivery set

forth in Exhibits A and B of the Transportation Agreement.

10. BILLING AND PAYMENT

10.1 Billing. On or before the 9th business day of each month,

HIOS shall render to Shipper a statement of the total amount

of Gas delivered to HIOS by Shipper at the Points of Receipt

set forth in the Transportation Agreement during the

preceding month and the amount due. "Render" is defined as

postmarked, time-stamped or delivered to the designated

site. Any imbalance statements shall be rendered prior to

or with the statement. Invoices shall be based on actuals

(if available) or best available data, expressed in Dth.

Quantities at points where OBAs exist shall be invoiced

based on scheduled quantities. When information necessary

for billing purposes is in the control of Shipper, Shipper

shall furnish such information to HIOS on or before the 5th

day of the month.