Columbia Gulf Transmission Company

Second Revised Volume No. 1

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Effective Date: 11/01/1993, Docket: RS92- 6-005, Status: Effective

Original Sheet No. 239 Original Sheet No. 239 : Effective

GENERAL TERMS AND CONDITIONS (Continued)

26.5 The Transporter shall determine the deviation of the gas from Ideal Gas Laws in accordance

with the methods prescribed in American Par Research NX-19 (NX-19) Report, titled " Manual for the

Determination of Supercompressibility Factors for Natural Gas". In making such determination

Transporter may also utilize any subsequent amendments, expansions or supersessions of the NX-19

Report which may be mutually acceptable to the parties.

26.6 For purposes of measurement and equipment calibration, the atmospheric pressure shall be

assumed to be constant at 14.7 pounds per square inch absolute.