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. 80 Original Sheet No. 80 : Effective

GENERAL TERMS AND CONDITIONS

(Continued)

equipment shall also be approved by HIOS before same is

fabricated and installed. In the event Shipper fails to

comply with HIOS' measurement standards for installation and

for operation and maintenance of such facilities, as described

in Sections 3.7, 3.8 and 6.6, HIOS reserves its right to suspend

service for noncompliance at any time during the term of the

agreement, to preserve the control, operation and accurate gas

measurement on its system. Either of the parties may install

check measuring equipment, provided that such equipment shall be

so installed as not to interfere with the operation of the other.

Shipper and HIOS, in the presence of each other, shall have access

to all measuring equipment at all reasonable times, but the reading,

calibrating and adjusting thereof shall be done by the Operator,

unless otherwise agreed upon. Shipper and HIOS shall have the

right to be present at the time of any installing, reading,

cleaning, changing, repairing, inspecting, testing, calibrating,

or adjusting done in connection with all measuring equipment. The

records from such measuring equipment shall remain the property of

their owner, but upon request, either party will cause to be

submitted to the other records, together with calculations

therefrom, for inspection, subject to return within 30 days after

receipt thereof. Reasonable care shall be exercised in the

installation, maintenance, and operation of measuring equipment so

as to avoid any inaccuracy in the determination of the volume of

Gas received and delivered.