High Island Offshore System, L.L.C.

Third Revised Volume No. 1

Effective Date: 11/27/2005, Docket: RP06- 53-000, Status: Effective

First Revised Sheet No. 86 First Revised Sheet No. 86 : Effective

Superseding: Original Sheet No. 86

GENERAL TERMS AND CONDITIONS

(Continued)

if a strip of white filter paper, moistened with a solution

containing five (5) percent by weight of lead acetate, is not

distinctly darker than a second paper freshly moistened with the

same solution, after the first paper has been exposed to the Gas

for 1-1/2 minutes in an apparatus of approved form, through

which the Gas is flowing at the rate of approximately five cubic

feet per hour, the Gas from the jet not impinging directly upon

the test paper; or the hydrogen sulphide content may be

determined by an instrument of approved type and by approved

methods when mutually agreeable to the parties.

4.3(c) Shall not contain more than 20 grains of total sulphur (including

the sulphur in any hydrogen sulphide and mercaptans) per 100

cubic feet;

4.3(d) Shall not at any time have an oxygen content in excess of one

percent by volume, and the parties hereto shall make every

reasonable effort to keep the Gas free of oxygen;

4.3(e) Shall contain not more than seven (7) pounds of water vapor per

million cubic feet of gas;

4.3(f) Shall not contain more than three (3) percent by volume of carbon

dioxide; provided, however, that Shipper will in any event inject

corrosion inhibitor in accordance with standards established by

HIOS;

4.3(g) Shall be delivered at a temperature not in excess of 120 degrees

Fahrenheit or less than 65 degrees Fahrenheit;

4.3(h) Shall not contain more than three (3) percent by volume of

nitrogen.