Williston Basin Interstate Pipeline Co.

Second Revised Volume No. 1

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Effective Date: 05/05/2006, Docket: RP00-107-010, Status: Effective

Thirteenth Revised Sheet No. 252 Thirteenth Revised Sheet No. 252 : Effective

Superseding: Twelfth Revised Sheet No. 252

GENERAL TERMS AND CONDITIONS (Continued)

15. BALANCING AND NOMINATION VARIANCE PROCEDURES (Continued)

would have been made pursuant to Subsection 15.14.5 at the

FERC-approved interest rate prescribed in Section 154.501 of

the FERC's Regulations, based on the ratio of each

Qualifying Shipper's applicable transportation delivery

quantities during the applicable period to the total of the

Qualifying Shippers' transportation delivery quantities

during the period in which the Nomination Variance Charge

obligation(s) was incurred by the Affiliate(s).

15.14.6 Nomination Variance Penalty Credits for nomination

variance penalties incurred after the effectiveness of Order Nos.

637, et seq.: For Nomination Variance Penalty Credits associated

with nomination variance penalties incurred after the

effectiveness of Order Nos. 637, et seq., Transporter shall credit

to Qualifying Rate Schedule FT-1 and IT-1 Shipper(s) any

Nomination Variance Penalty revenues received from any of

Transporter's Shippers, net of Transporter's costs. For purposes

of this Subsection, Qualifying Rate Schedule FT-1 and IT-1

Shippers shall include those Shippers who did not themselves incur

any Nomination Variance Penalty obligation under Subsections

15.14.2, 15.14.3, or 15.14.4 during the month in which the

Nomination Variance obligation(s) was incurred. Nomination

Variance Penalty revenues to be credited shall be calculated by

summing the revenues received for Nomination Variance Penalties

less any costs incurred by Transporter. If the sum is positive

(net Nomination Variance Penalty revenues exceed net costs)

Transporter shall credit such excess revenues to the Qualified

Shipper(s). If the sum is negative (net Nomination Variance

Penalty revenues are less than net costs) Transporter shall carry

over such amount to the subsequent month and include it in such

subsequent month's calculation until Transporter is made whole.

The portion of any Nomination Variance Penalty revenues to be

credited to each Qualifying Shipper shall be based on the ratio of

each Qualifying Shipper's applicable monthly transportation

delivery quantities to the total of the Qualifying Shippers'

monthly transportation delivery quantities for the month in which

the Nomination Variance Penalty obligation(s) is incurred. The

credit shall be applied to each Qualifying Shipper's monthly bill

issued three (3) months subsequent to the month the Nomination

Variance Penalty obligation(s) was paid.