Gas Transmission Northwest Corp.

Third Revised Volume No. 1-A

Effective Date: 10/06/2003, Docket: RP04- 23-000, Status: Effective

Original Sheet No. 131 Original Sheet No. 131 : Effective

TRANSPORTATION GENERAL TERMS AND CONDITIONS

(Continued)

18. OPERATING PROVISIONS (Continued)

18.1 Firm Service (Continued)

(f) If GTN accepts the winning bid(s) and tenders a

Service Agreement, requestor(s) shall complete and return

the Service Agreement within thirty (30) days.

(g) Except as provided in Paragraph 28, GTN shall not be

obligated to tender or execute a Service Agreement for

service at any rate less than the Maximum Rate set forth

in the Statement of Effective Rates and Charges

applicable to the service requested.

(h) A Shipper receiving service under FTS-1 shall not lose

its priority for purposes of Paragraph 19 by the renewal

or extension of term of that service; provided, however,

any renewal or extension must be pursuant to a rollover

or evergreen provision of the Service Agreement. Shipper's

preexisting priority shall not apply, however, to any

increase in transportation quantity or new primary point

of delivery.

18.2 Interruptible Service

The provisions of this Paragraph 18.2 shall be applicable to

interruptible transportation service under Rate Schedule ITS-1

contained in this Third Revised Volume No. 1-A.

(a) Interruptible transportation service under this Third

Revised Volume No. 1-A shall be provided when, and to the

extent that, capacity is available in GTN's existing

facilities, which capacity is not subject to a prior

claim under a pre-existing agreement pursuant to Rate

Schedule FTS-1 or under another class of firm service.

(b) In the event where natural gas tendered by Shipper to GTN

at the receipt point(s) for transportation, or

delivered by GTN to Shipper (or for Shipper's

account) at the delivery point(s), is commingled with

other natural gas at the time of measurement, the

determination of deliveries applicable to Shipper shall

be made in accordance with operating arrangements

satisfactory to Shipper, GTN and any third party

transporting to or from GTN's system.

(Continued)