Williston Basin Interstate Pipeline Co.

Second Revised Volume No. 1

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

First Revised Sheet No. 316 First Revised Sheet No. 316

Superseding: Original Sheet No. 316

GENERAL TERMS AND CONDITIONS (Continued)

37. TAKE-OR-PAY BUYOUT AND BUYDOWN COST RECOVERY MECHANISM

(For Filings Submitted to FERC After November 1, 1990) (Continued)

that Shipper's throughput to which the throughput surcharge was

applied during the last year of the total recovery period to the

total throughput to which the throughput surcharge was applied

during that same period.

37.4 Accounting Procedures for Buyout/Buydown Costs. Transporter

shall maintain separate principal and interest subaccounts in Account

186 to record take-or-pay buyout/buydown costs for each surcharge

recovery mechanism. The principal subaccounts for the fixed monthly

surcharge and/or throughput surcharge will be debited with that portion

of Transporter's applicable take-or-pay buyout/buydown costs elected by

Transporter and permitted to become effective by order(s) of FERC and

for the amount(s) necessary to ensure that Seller is kept whole whenever

FERC determines that particular services may not be assessed a specific

surcharge. Each month these principal subaccounts shall be credited

with the principal portion of the fixed monthly surcharge, if any, and

an amount determined by applying the principal portion of the throughput

surcharge to the actual total applicable transportation throughput

experienced during the month under Transporter's then effective FERC Gas

Tariff, Second Revised Volume No. 1. The balance is the result of

applying the current month's credits as calculated above against the

prior month's balance. The interest subaccounts will be debited and/or

credited monthly, as applicable, for interest accrued or owed at the

current FERC published interest rate, and credited with the interest

portion of the fixed monthly surcharge and an amount determined by

applying the interest portion of the throughput surcharge to the actual

total applicable transportation throughput experienced during the month

under Transporter's then effective FERC Gas Tariff, Second Revised

Volume No. 1.

37.5 Obligation to Pay. Any Shipper liable for charges under this

Section 37 as a result of filings submitted to FERC after the

effectiveness of this Section 37 or as a result of the effectiveness of

Section 33 of the General Terms and Conditions of Transporter's canceled

FERC Gas Tariff, First Revised Volume No. 1, prior to the effectiveness

of this Second Revised Volume No. 1 Tariff shall not be relieved of its

obligation under this Section 37 the event that the Service Agreement,

between