Williston Basin Interstate Pipeline Co.

Second Revised Volume No. 1

Effective Date: 05/14/2010, Docket: RP10-602-000, Status: Effective

Seventh Revised Sheet No. 230 Seventh Revised Sheet No. 230

Superseding: Sixth Revised Sheet No. 230

GENERAL TERMS AND CONDITIONS (Continued)

9. NOMINATION AND SCHEDULING PROCEDURES (Continued)

9.22.2 Storage service performed under Transporter's Rate

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

9.22.3 Storage service performed at the maximum lawful rate

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

a pro rata basis.

9.22.4 Storage service performed at less than the maximum

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

highest rate to the lowest rate.

9.22.5 Scheduled authorized overrun storage services shall be

scheduled on a pro rata basis. Transporter shall offer all

available but unused storage capabilities on a daily basis and

make uncommitted storage capabilities available via an electronic

communication mechanism.

9.22.6 Storage service nominated and scheduled in accordance

with Subsection 9.10 after the nomination deadline(s) shall be

scheduled on a first come, first served basis.

9.23 The following interruption priority listing (in ascending order

of priority) shall prevail for storage services rendered pursuant to

Transporter's FERC Gas Tariff, Second Revised Volume No. 1:

9.23.1 Scheduled storage service nominated and scheduled in

accordance with Subsection 9.10 after the nomination deadline(s)

shall be interrupted from the lowest rate to the highest rate.

9.23.2 Scheduled authorized overrun storage service shall be

interrupted on a pro rata basis.