Canyon Creek Compression Company

Third Revised Volume No. 1

Effective Date: 12/01/1993, Docket: RS92- 57-003, Status: Effective

Original Sheet No. 177 Original Sheet No. 177 : Effective

GENERAL TERMS AND CONDITIONS

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21. QUALITY OF GAS

21.1 HEAT CONTENT

The gas delivered at each of the points of receipt and

the point of delivery hereunder shall contain a Heating Value of not

less than nine hundred fifty (950) Btu per cubic foot.

21.2 FREEDOM FROM OBJECTIONABLE MATTER

The gas received and delivered:

(a) Shall be commercially free from dust, gums,

gum-forming constituents, dirt, impurities or other solid or liquid

matter which might interfere with its merchantability or cause

injury to or interference with proper operation of the pipelines,

regulators, meters, or other equipment of Canyon;

(b) Shall not contain more than one (1) grain of

hydrogen sulfide per one hundred (100) cubic feet of gas, as

determined by methods prescribed in "Standards of Gas Service,

Circular of the National Bureau of Standards," No. 405, page 134

(1934 edition), and shall be considered free from hydrogen sulfide

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

containing five percent (5%) 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

one and one-half (1-1/2) minutes in an apparatus of approved form,

through which the gas is flowing at the rate of approximately five

(5) cubic feet per hour, the gas from the jet not impinging directly

upon the test paper; or the hydrogen sulfide content may be

determined by an instrument selected by Canyon in exercise of its

reasonable judgment;

total sulfur (including the sulfur in any hydrogen sulfide and

mercaptans) per one hundred (100) cubic feet;

(d) Shall not at any time have an oxygen content in

excess of ten parts per million (10 ppm) by volume, and the parties

hereto shall make every reasonable effort to keep the gas free of

oxygen;