Williston Basin Interstate Pipeline Co.

Second Revised Volume No. 1

Effective Date: 08/04/2006, Docket: RP06-427-000, Status: Effective

Third Revised Sheet No. 628 Third Revised Sheet No. 628 : Effective

Superseding: Second Revised Sheet No. 628

FORM OF SERVICE AGREEMENT

APPLICABLE TO RATE SCHEDULE FS-1 (Continued)

3. Title to any gas stored hereunder resides with Shipper.

4. Rate Schedule. Shipper shall each month pay Transporter for

storage service rendered hereunder at rates established pursuant to

Transporter's Rate Schedule FS-1, or any effective superseding Rate Schedule

on file with the FERC. Such rates shall not be applicable to service provided

pursuant to Section 51 of the General Terms and Conditions of this Tariff.

5. Incorporation by Reference. This Service Agreement in all

respects shall be subject to the provisions of Rate Schedule FS-1 and to the

applicable provisions of the General Terms and Conditions of Transporter's

FERC Gas Tariff, Second Revised Volume No. 1 as such are on file with the FERC

(subject to such adjustments to the General Terms and Conditions as may be

made pursuant to Section 16 of this Service Agreement) all of which are by

reference made a part hereof.

6. 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 rates for storage service hereunder shall be as listed on Exhibit "A"

which is attached hereto and made a part hereof.

7. Effective Date. This Service Agreement shall become effective on

(specific date or triggering event) _____________.

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