Williston Basin Interstate Pipeline Co.

Second Revised Volume No. 1

Effective Date: 08/01/2004, Docket: RP04-377-000, Status: Effective

Tenth Revised Sheet No. 288A Tenth Revised Sheet No. 288A : Effective

Superseding: Ninth Revised Sheet No. 288A

GENERAL TERMS AND CONDITIONS (Continued)

21. PAYMENTS (Continued)

21.5 Filing fees: Shipper shall reimburse Transporter, within

fifteen (15) days of receipt of an invoice, for any and all filing fees

incurred by Transporter in connection with the service to be provided

Shipper under a Service Agreement.

21.6 Application of Rate Discounts

21.6.1 Reservation Rate Discounts - Any rate discount from a

maximum reservation charge granted by Transporter in accordance

with the applicable Section of the FERC's Regulations for any

Shipper receiving service pursuant to Part 284 of the FERC's

Regulations shall apply first to the Gas Technology Institute

(GTI) surcharge, followed by the base tariff rate, and last, all

Gas Supply Realignment (GSR) surcharges.

21.6.2 Commodity Rate Discounts - Any rate discount from a

maximum commodity charge granted by Transporter in accordance with

the applicable Section of the FERC's Regulations for any Shipper

receiving service pursuant to Part 284 of the FERC's Regulations

shall apply first to the base tariff rate, excluding the variable

cost component and Take-or-Pay Throughput surcharges on a pro rata

basis, and last, to all Gas Supply Realignment (GSR) surcharges.

21.7 Shipper making payment should submit supporting documentation;

Transporter receiving payment should apply payment per supporting

documentation provided by the paying Shipper; and if payment differs

from invoiced amount, remittance detail should be provided with the

payment except when payment is made by electronic funds transfer (EFT),

in which case, the remittance detail is due within two business days of

the payment due date.

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