Gas Transmission Northwest Corp.

Third Revised Volume No. 1-A

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Effective Date: 08/01/2009, Docket: RP09-684-000, Status: Effective

Third Revised Sheet No. 154 Third Revised Sheet No. 154

Superseding: Second Revised Sheet No. 154

TRANSPORTATION GENERAL TERMS AND CONDITIONS

(Continued)

19. PRIORITY OF SERVICE, SCHEDULING AND NOMINATIONS (Continued)

19.4 Nominations (Continued)

19.4(c) Changes to Nominations (Continued)

Intraday Nominations do not have roll-over options and will

replace the Standing Nomination only for the duration of

the Gas Day. Quantities for Intraday Nominations will be

expressed in Dekatherms, and represent the total quantities

to be delivered prior to the end of the effective Gas Day.

(3) In accordance with NAESB Standard 1.3.9, Version 1.8,

all nominations, including Intraday Nominations, should

be based on a daily quantity; thus, an Intraday

Nominator need not submit an hourly nomination.

Intraday nominations should include an effective date

and time. The interconnected parties should agree on

the hourly flows of the Intraday Nomination, if not

otherwise addressed in transporter's contract or

tariff.

(Continued)