Northwest Pipeline Corporation

First Revised Volume No. 1-A

Effective Date: 10/01/1992, Docket: RP92-224-000, Status: Effective

Second Revised Sheet No. 401 Second Revised Sheet No. 401 : Effective

Superseding: First Revised Sheet No. 401

GENERAL TRANSPORTATION TERMS AND CONDITIONS

1. DEFINITIONS

1.1 British Thermal Unit or "Btu" shall mean a Btu as defined in

the American Gas Association Report No. 3, as revised from time to

time.

1.2 Cubic Foot means the volume of gas which occupies one cubic

foot of space when held at a base temperature of sixty degrees

Fahrenheit (60øF) and a base pressure of 14.73 psia.

1.1 Gas Day means a period of twenty-four (24) consecutive hours

beginning and ending as near as practicable at eight o'clock (8 a.m)

Pacific Standard Time (9 a.m. Mountain Standard Time). Reference to

a specific day shall mean the twenty-four hours starting at 8 a.m.

Pacific Standard Time of that calendar day, e.g., April 1 shall mean

the twenty-four hours starting at 8 a.m. Pacific Standard Time on

April 1.

1.4 FERC means the Federal Energy Regulatory Commission or any

successor entity thereto.

1.5 Gas or Natural Gas. The term "gas" or "natural gas" shall

mean any mixture of hydrocarbons or of hydrocarbons and

non-combustible gases, in a gaseous state, consisting essentially of

methane. Such gas may be either in its natural state produced from

wells, including casinghead and residue gas, or after manufacture or

other methods of producing synthetic gas.