Williston Basin Interstate Pipeline Co.

Second Revised Volume No. 1

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

Eighth Revised Sheet No. 229A Eighth Revised Sheet No. 229A

Superseding: Seventh Revised Sheet No. 229A

GENERAL TERMS AND CONDITIONS (Continued)

9. NOMINATION AND SCHEDULING PROCEDURES (Continued)

9.21.3 Scheduled authorized overrun transportation service

shall be interrupted on a pro rata basis.

9.21.4 Park and/or loan service performed at less than the

maximum lawful rate under Rate Schedule PAL-1 shall be interrupted

from the lowest rate to the highest rate.

9.21.5 Park and/or loan service performed at the maximum lawful

rate under Rate Schedule PAL-1 shall be interrupted on a pro rata

basis.

9.21.6 Transportation service performed at less than the

maximum lawful rate under Rate Schedule IT-1 shall be interrupted

from the lowest rate to the highest rate.

9.21.7 Transportation service performed at the maximum lawful

rate under Rate Schedule IT-1 and new NGA Section 7 interruptible

transportation services pursuant to a Service Agreement dated

after June 24, 1988. All such services shall be interrupted on a

pro rata basis.

9.21.8 Transportation by transporter for maintenance of system

integrity.

9.21.9 Transportation service transactions performed under Rate

Schedule FT-1, which involve primary, alternate or segmented

receipt and/or delivery points, shall be interrupted on a pro rata

basis.

9.22 Within each of the nomination cycles defined in Subsection 9.1,

9.2, 9.3 or 9.4, the following scheduling priority listing (in

descending order of priority) shall prevail for storage services

rendered pursuant to Transporter's FERC Gas Tariff, Second Revised

Volume No. 1: