Pacific Gas Transmission Company

First Revised Volume No. 1-A

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Effective Date: 08/01/1999, Docket: RP99-399-001, Status: Effective

Fourth Revised Sheet No. 53 Fourth Revised Sheet No. 53 : Effective

Superseding: Third Revised Sheet No. 53



1. DEFINITIONS (Continued)


1.8 Dekatherm: The term "Dekatherm" (or "Dth") is the

quantity of heat energy equivalent to one million

(1,000,000 British Thermal Units (MMBtu). Dth is the

standard quantity for Nominations, confirmations and

Scheduled Quantities in the United States. For purposes

of this tariff and associated Service Agreements, the terms

MMBtu and Dth are synonymous.


1.9 Btu: The term "Btu" shall mean British Thermal Unit. The

term "MMBtu" shall mean one million (1,000,000) British

Thermal Units. The reporting basis for Btu shall be

standardized as 14.73 dry psia and 60 degrees (60o)

Fahrenheit (101.325 kPa and 15.6 degrees C).


1.10 Gross Heating Value. The term "gross heating value" shall

mean the number of Btus in a cubic foot of gas at a

temperature of sixty degrees (600) Fahrenheit, saturated

with water vapor, and at an absolute pressure equivalent to

thirty (30) inches of mercury at thirty-two degrees (320)



1.11 Psig. The term "psig" shall means pounds per square inch



1.12 Releasing Shipper: A firm transportation Shipper which

intends to post its service to be released to a Replacement

Shipper, has posted the service for release, or has released

its service.


1.13 Replacement Shipper: A Shipper which has contracted to

utilize a Releasing Shipper's service for a specified period

of time.


1.14 Posting Period: The period of time during which a Releasing

Shipper may post, or have posted by the pipeline, all or a

part of its service for release to a Replacement Shipper.


1.15 Release Term: The period of time during which a Releasing

Shipper intends to release, or has released all or a portion

of its contracted quantity of service to a Replacement