Transwestern Pipeline Company

Second Revised Volume No. 1

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Effective Date: 02/01/1993, Docket: RS92- 87-003, Status: Effective

3rd Revised Sheet No. 57 3rd Revised Sheet No. 57 : Effective

Superseding: 2nd Revised Sheet No. 57

GENERAL TERMS AND CONDITIONS

(continued)

F. Deviation of the natural gas from Boyle's and Charles' Laws shall be

calculated as per AGA Par Research Project NX-19 or by AGA

Transmission Measurement Committee Report No. 8, as may be amended

from time to time. The gas analysis required by Part E above shall

be used for the chemical composition of the gas as required for

calculation by NX-19 or AGA-8.

5. MEASURING STATIONS

5.1 Measuring Station:

A. Measurement facilities installed and operated hereunder shall

include standard orifice meters, turbine or standard

displacement meters, or any other method mutually agreed upon by

the interconnecting parties, and other necessary measuring

equipment by which the quantity of gas hereunder shall be

measured. The measurement facilities, including all