Texas Gas Transmission Corporation

First Revised Volume No. 2-A

Effective Date: 11/01/1990, Docket: RP90-192-000, Status: Effective

Original Sheet No. 77 Original Sheet No. 77 : Effective

GENERAL TERMS AND CONDITIONS

(Continued)

(e) The specific gravity of the gas shall be

determined for any day by taking the arith-

metic average of the hourly reading or by

transmitting the gravity directly to the flow

computer from a gravitometer of approved type

which shall be checked at least once each

month by the use of an Edwards balance or by

any other industry accepted method, by chro-

matographic analysis using the compound values

contained in the American Gas Association Gas

Measurement Committee Report No. 3. Septem-

ber, 1985 (ANSI/API 2530 approval May, 1985),

or any revision thereof; provided, however,

that where quantities of gas metered will not

be materially affected by doing so, the

specific gravity of the gas for any day may be

determined by any other recognized method

which may be practicable in the circumstances.

3.4 All orifice meter volumes shall be computed in

accordance with the American Gas Association Mea-

surement Committee Report No. 3, September, 1985

(ANSI/ API 2530 approval May, 1985), including the

Appendices thereto and modifications and amendments

thereof.

3.5 All turbine meter volumes shall be computed in

accordance with the American Gas Association Trans-

mission Measurement Committee Report No. 7, Novem-

ber, 1984, including the Appendices thereto and

modifications and amendments thereof.

3.6 In the cases where measurements shall be other than

orifice or turbine meters all necessary factors for

proper volume determination shall be applied.

3.7 Spot gas samples taken from the pipeline system for

purposes of determining or deriving quantitative

values that will be used in the computation of gas