Williston Basin Interstate Pipeline Co.

Second Revised Volume No. 1

Effective Date: 08/23/2004, Docket: RP04-410-000, Status: Effective

Fourth Revised Sheet No. 630 Fourth Revised Sheet No. 630 : Effective

Superseding: Third Revised Sheet No. 630

FORM OF SERVICE AGREEMENT

APPLICABLE TO RATE SCHEDULE FS-1 (Continued)

14. Shipper may sell, assign or otherwise transfer all or any portion

of its gas held in storage hereunder to another Shipper having an executed

Storage Service Agreement with Transporter upon twenty-four (24) hours notice

to Transporter without the incurrence of withdrawal or injection fees solely

as a result of the sale, assignment or transfer, with the prior written

consent of Transporter, which consent shall not be unreasonably withheld. If

such sale, assignment or transfer shall occur, the original Shipper is

responsible for the charges applicable to the transportation of such gas to

storage for injection as if no stop-in-time had been applied to such

transportation and for applicable storage charges up to the date of transfer

and such acquiring Shipper is responsible for paying all storage charges

applicable to such gas under its Storage Service Agreement on and after the

date of transfer and for separately paying the charges for the transportation

of such gas after withdrawal as if no stop-in-time had been applied to such

transportation. In the event the original Shipper having an executed

Interruptible Storage Service Agreement under Rate Schedule IS-1 sells,

assigns, or otherwise transfers gas held in storage such acquiring Shipper

having an executed Firm Storage Service Agreement under Rate Schedule FS-1,

the original Shipper shall be billed by Transporter on the date of transfer

the difference in the withdrawal rate between Rate Schedules IS-1 and FS-1 as

set forth on Sheet Nos. 19 and 20 of Transporter's Tariff.

15. This section to be utilized when necessary to specify other

operating provisions.

16. Adjustments to General Terms and Conditions. Certain of the

General Terms and Conditions are to be adjusted for purposes of this Service

Agreement, as specified below:

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