Northwest Pipeline Corporation G P

Fourth Revised Volume No. 1

Effective Date: 11/01/2009, Docket: RP09-1056-000, Status: Effective

First Revised Sheet No. 202A First Revised Sheet No. 202A

Superseding: Original Sheet No. 202A

GENERAL TERMS AND CONDITIONS (Continued)

1. DEFINITIONS (Continued)

1.14 Electronic Data Interchange (EDI): The transfer of information

between Transporter's and Service Requester's Designated Sites using

NAESB approved standard data sets developed and maintained by the

American National Standards Institute's (ANSI) Accredited Standards

Committee X12 (ASC X12). EDI data exchange is governed by an executed

Trading Partner Agreement between Transporter and Service Requester.

1.15 Firm Service: Transportation or Storage service which is defined

as firm in the Rate Schedule in Transporter's Tariff applicable to such

Shipper's Executed Firm Service Agreement. Firm Service for

Transportation can yield Primary Firm Service Rights or Secondary Firm

Service Rights.

1.16 Electronic Delivery Mechanism (EDM): The computer technology

model which allows all parties sending and receiving data to accept a

Transmission Control Protocol/Internet Protocol (TCP/IP) using Point to

Point Protocol (PPP) connection. At a minimum, sending and receiving

parties should designate an Internet address as a Designated Site for

the receipt and delivery of NAESB standardized data sets.

1.17 End Date: The Gas Day specified by Service Requester when a

transaction is to end.

1.18 Gas Day: A period of twenty-four (24) consecutive hours

beginning and ending as near as practicable at nine o'clock (9 a.m.)

Central Clock Time (8 a.m. Mountain Clock Time). Per NAESB WGQ Standard

1.3.1, "Standard time for the gas day should be 9 a.m. to 9 a.m.

(central clock time)." Reference to a specific day shall mean the

twenty-four hours starting at 9 a.m. Central Clock Time (8 a.m. Mountain

Clock Time) of that calendar day.

1.19 Gas or Natural Gas: 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.