Pacific Gas Transmission Company

First Revised Volume No. 1-A

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Effective Date: 09/15/1998, Docket: RP98-375-000, Status: Effective

Third Revised Sheet No. 60 Third Revised Sheet No. 60 : Effective

Superseding: Second Revised Sheet No. 60

TRANSPORTATION GENERAL TERMS AND CONDITIONS

(Continued)

5. MEASUREMENTS

5.1 Metering: The gas shall be metered by one or more orifice,

turbine, ultrasonic, displacement or other-type meters, at

the discretion of PG&E GT-NW. All meters shall be installed

and maintained, and volumes shall be measured,in accordance

with applicable A.G.A. standards for the meter in question.

5.2 Specific Gravity: The specific gravity of the gas delivered

hereunder shall be determined from the read-outs of

continuously operating measuring instruments. The method

shall consist of one of the following:

(a) gravitometer

(b) gas chromatography

(c) other instruments acceptable to both parties

Analysis of chromatograph shall comply with the standards set

forth in ASTM D 1945. Calculation of the specific gravity from

compositional analysis by gas chromatography shall comply with

the standards set forth in ASTM D 3588. Measurement of the

specific gravity with a gravitometer shall comply with the

standards set forth in ASTM D 1070.

5.3 Flowing Temperature: Flowing gas temperature shall be

continuously measured and used in flow calculations.

(Continued)