Williston Basin Interstate Pipeline Co.

Second Revised Volume No. 1

Effective Date: 08/01/1997, Docket: RP97-410-000, Status: Effective

First Revised Sheet No. 580 First Revised Sheet No. 580 : Effective

Superseding: Original Sheet No. 580

FORM OF TRANSPORTATION SERVICE AGREEMENT

APPLICABLE TO RATE SCHEDULE STN-1 (Continued)

7. Changes in Rates and Terms. Nothing contained herein shall be

construed as affecting in any way the right of Transporter to make

unilateral changes in the applicable rates, charges, adjustments, terms,

conditions, tariffs and rate schedules pursuant to Section 4 of the Natural

Gas Act, or any other applicable statute, and the rules and regulations

promulgated thereunder. Shipper agrees to pay such rates as may be made

effective hereunder without prejudice to the rights of Shipper to contest

such changes. The rate for service hereunder shall be as listed on Exhibit

"D" which is attached hereto and made a part hereof.

8. Effective Date. This Service Agreement shall become effective

on _________________________.

9. Termination Date. This Service Agreement shall continue in

full force and effect for a term ending _____________________________,

unless Transporter terminates service prior to that date pursuant to the

provisions of Transporter's FERC Gas Tariff, Second Revised Volume No. 1 or

other applicable authority.

10. Termination Obligations. Termination of this Service Agreement

shall not relieve Transporter and Shipper of its obligation to pay money

due hereunder to Transporter for services rendered.

11. Cancellation of Prior Contracts. When this Service Agreement

becomes effective, it shall supersede and cancel the following contract(s)

between the Parties hereto:

(The rest of this sheet has been intentionally left blank).