Gas Transmission Northwest Corp.

Third Revised Volume No. 1-A

Effective Date: 04/30/2010, Docket: RP10-550-000, Status: Effective

Second Revised Sheet No. 293 Second Revised Sheet No. 293

Superseding: First Revised Sheet No. 293

FORM OF SERVICE AGREEMENT

APPLICABLE TO AUTHORIZED IMBALANCE SERVICE

UNDER RATE SCHEDULE AIS-1

(Continued)

VII

Miscellaneous

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7.3 Unless herein provided to the contrary, any notice called for in

this Agreement shall be in writing and shall be considered as

having been given if delivered by registered mail or telex with

all postage or charges prepaid, to either GTN or Shipper

at the place designated below. Routine communications, including

monthly statements and payment, shall be considered as duly

delivered when received by ordinary mail. Unless changed, the

addresses of the parties are as follows:

"GTN" GAS TRANSMISSION NORTHWEST CORPORATION

717 Texas Street, Suite 2400

Houston, Texas 77002-2761

Attention: Commercial Services

"Shipper" ____________________________________

____________________________________

Attention: ________________________

________________________

7.4 A waiver by either party of any one or more defaults by the other

hereunder shall not operate as a waiver of any future default or

defaults, whether of a like or of a different character.

7.5 This Agreement may only be amended by an instrument in writing

executed by both parties hereto.

7.6 Nothing in this Agreement shall be deemed to create any rights or

obligations between the parties hereto after the expiration of the

term set forth herein, except that termination of this Agreement

shall not relieve either party of the obligation to correct any

quantity imbalances or Shipper of the obligation to pay any amounts

due hereunder to GTN.

7.7 Exhibit(s) ___ attached hereto is/are incorporated herein by

reference and made a part hereof for all purposes.

(Continued)