Williston Basin Interstate Pipeline Co.

Second Revised Volume No. 1

Effective Date: 07/30/2001, Docket: CP01-370-001, Status: Effective

Fourth Revised Sheet No. 230A Fourth Revised Sheet No. 230A : Effective

Superseding: Third Revised Sheet No. 230A

GENERAL TERMS AND CONDITIONS (Continued)

9. NOMINATION AND SCHEDULING PROCEDURES (Continued)

9.23.3 Storage service performed at less than the maximum

lawful rate under Rate Schedule IS-1 shall be interrupted from the

lowest rate to the highest rate.

9.23.4 Storage service performed at the maximum lawful rate

under Rate Schedule IS-1. All such services shall be interrupted

on a pro rata basis.

9.23.5 Storage service performed under Transporter's Rate

Schedule FS-1, which shall be interrupted on a pro rata basis.

9.23.6 Storage capabilities retained by Transporter for

maintenance of system integrity.

9.24 For purposes of determining the amount of firm capacity

available to serve new firm service requests, Transporter shall reserve

sufficient capacity or capability in its existing facilities to meet its

obligation to those services shown in Subsections 9.20.1, 9.20.2,

9.20.3, 9.22.1 and 9.22.2, and shall not reserve capacity or capability

for those services shown in Subsections 9.20.4, 9.20.5, 9.20.6, 9.20.7,

9.20.8, 9.20.9, 9.20.10, 9.22.3, 9.22.4, 9.22.5, and 9.22.6.

9.25 For gas that is scheduled for delivery at interconnections with

other pipelines, the priority of service will be established

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