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. 655 Fourth Revised Sheet No. 655 : Effective

Superseding: Third Revised Sheet No. 655

FORM OF SERVICE AGREEMENT

APPLICABLE TO RATE SCHEDULE IS-1 (Continued)

13. 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 to 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.

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

operating provisions.

15. 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.)