Northwest Pipeline Corporation

First Revised Volume No. 1-A

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Effective Date: 06/02/1991, Docket: RP91-150-000, Status: Effective

First Revised Sheet No. 402 First Revised Sheet No. 402 : Effective

Superseding: Original Sheet No. 402




1. DEFINITIONS (Continued)


1.6 Gross Heating Value shall mean the total Btu content for a cubic

foot of gas on a dry basis as determined by calculation from

compositional analysis using physical properties of gases at 14.73

psia and 60øF as prescribed by the American Gas Association.


1.7 Mcf means one thousand cubic feet of gas.


1.8 MMBtu means one million Btu's.


1.9 Month means a calendar month; provided, however, that Month shall

mean Transporter's normal business month for purposes of metering at

the wellhead.


1.10 psia means pressure expressed in pounds per square inch absolute.


1.11 Thermally Equivalent means an equal number of MMBtu's.


1.12 Transportation means the receipt of gas of Shipper at input points

on Transporter's mainline transportation system (referred to as

"Receipt Points"), and the delivery of thermally equivalent quantities

by Transporter to Shipper or for Shipper's account (after making

allowance for any requisite fuel reimbursement furnished in-kind) at

other points on Transporter's mainline transportation system (referred

to as Delivery Points) regardless of the direction of flow of gas in

Transporter's pipelines between the Receipt and Delivery Points, or of

changes in such directions of flow.


1.13 Transporter means Northwest Pipeline Corporation.