Gas Transmission Northwest Corp.

Third Revised Volume No. 1-A

Effective Date: 09/03/2004, Docket: RP04-440-000, Status: Effective

First Revised Sheet No. 292 First Revised Sheet No. 292 : Effective

Superseding: Original Sheet No. 292

FORM OF SERVICE AGREEMENT

APPLICABLE TO AUTHORIZED IMBALANCE SERVICE

UNDER RATE SCHEDULE AIS-1

V. Operating Procedure

5.1 Shipper shall conform to the operating procedures set forth in

GTN's Transportation General Terms and Conditions.

5.2 Nothing in Section 5.1 shall compel GTN to advance gas pur-

suant to Shipper's request on any given day. GTN shall have

the right to interrupt or curtail the advancement and return of gas for

the account of Shipper pursuant to GTN's Rate Schedule AIS-1.

VI. Rate(s), Rate Schedules,

and General Terms and Conditions of Service

6.1 Shipper shall pay GTN each month for services rendered

pursuant to this Agreement in accordance with GTN's Rate

Schedule AIS-1, or superseding rate schedule(s), on file with and

subject to the jurisdiction of FERC. In the event GTN and

Shipper agree on a Negotiated Rate, that rate, and any provisions

governing such Negotiated Rate, shall be set forth in Exhibit B

attached hereto.

6.2 This Agreement in all respects shall be and remains subject to the

applicable provisions of Rate Schedule AIS-1, or superseding rate

schedule(s) and of the applicable Transportation General Terms and

Conditions of GTN's FERC Gas Tariff, Third Revised Volume

No. 1-A on file with the FERC, all of which are by this reference

made a part thereof.

6.3 GTN shall have the unilateral right from time to time to

propose and file with FERC such changes in the rates and charges

applicable to Authorized Imbalance Service pursuant to this

Agreement, the rate schedule(s) under which this service is

hereunder provided, or any provisions of GTN's

Transportation General Terms and Conditions applicable to such

services. Shipper shall have the right to protest any such changes

proposed by GTN and to exercise any other rights that Shipper

may have with respect thereto.

VII. Miscellaneous

7.1 This Agreement shall be interpreted according to the laws of the

State of California.

7.2 Shipper agrees to indemnify and hold GTN harmless for

refusal to advance gas hereunder in the event any downstream

Transporter fails to receive gas as contemplated by this Agreement.