Gas Transmission Northwest Corp.

Third Revised Volume No. 1-A

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Effective Date: 04/16/2008, Docket: RP08-274-000, Status: Effective

Original Sheet No. 127A Original Sheet No. 127A : Effective

TRANSPORTATION GENERAL TERMS AND CONDITIONS

18. OPERATING PROVISIONS (Continued)

18.1 Firm Service (Continued)

(b) Future Sales of Capacity: (Continued)

pre-arranged Shipper elects not to match a higher competing

bid, the capacity will be awarded to the highest creditworthy

bidder in accordance with Paragraph 18.1(e). If there is an

open season ongoing for certain capacity, GTN will not enter

into a pre-arranged deal for that capacity during the open

season.

GTN will separately identify on its Internet website all

capacity that is anticipated to become available and is not

subject to a right of first refusal or unilateral evergreen

provision. GTN will not enter into any pre-arranged deals for

capacity that has not previously been posted on its Internet

website.

(Continued)