Williston Basin Interstate Pipeline Co.

First Revised Volume No. 1

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Effective Date: 09/01/1995, Docket: RP90-137-024, Status: Effective

1st Rev Eleventh Revised Sheet No. 21 1st Rev Eleventh Revised Sheet No. 21 : Superseded

Superseding: Sub Eleventh Revised Sheet No. 21

NOTICE OF CURRENTLY EFFECTIVE RATES

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(ALL RATES ARE STATED IN CENTS PER DEKATHERM OR MCF AS INDICATED)

TOP GAS SUPPLY BASE TARIFF

BASE TARIFF GRI ACA THROUGHPUT REALIGNMENT RATE PLUS

RATE SCHEDULE UNIT RATE SURCHARGE A/ SURCHARGE SURCHARGE B/ SURCHARGE SURCHARGES

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RATE SCHEDULE S-2

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STORAGE ONLY RATE PER MCF 0.000 N.A. N.A. N.A. N.A. 0.000

STORAGE PLUS TRANSPORTATION C/ RATE PER DKT 42.088 D/ 0.850 0.226 16.431 N.A. 59.595 E/

RATE SCHEDULE T-5

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COMMODITY CHARGE

WITH GATHERING C/ F/ RATE PER DKT 67.988 0.850 0.226 16.431 N.A. 85.495

WITHOUT GATHERING C/ RATE PER DKT 42.088 0.850 0.226 16.431 N.A. 59.595

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A/ GRI SURCHARGE IS APPLICABLE TO TRANSPORTATION DELIVERIES TO ALL DELIVERY POINTS EXCEPT POINTS OF INTERCONNECTION WITH GRI MEMBER PIPELINES.

B/ THE THROUGHPUT SURCHARGE IS APPLICABLE TO TRANSPORTATION DELIVERIES IN ACCORDANCE WITH SECTIONS 36 AND 37 OF THE GENERAL TERMS AND CONDITIONS OF THIS FERC GAS

TARIFF. THE THROUGHPUT SURCHARGE CONSISTS OF 8.925 CENTS PER DKT FOR COSTS BEING RECOVERED PURSUANT TO DOCKET NOS. RP90-137-000, PLUS 0.048 CENTS PER DKT FOR

COSTS BEING RECOVERED PURSUANT TO DOCKET NO. RP91-56-000, PLUS 7.458 CENTS PER DKT FOR COSTS BEING RECOVERED PURSUANT TO DOCKET NO. RP93-175-000. THE

THROUGHPUT SURCHARGE IS BASED UPON THE THROUGHPUT UNDERLYING RATES FILED AUGUST 24, 1995 IN DOCKET NOS. RP92-236 ET AL.

C/ SHIPPER MUST REIMBURSE TRANSPORTER IN-KIND FOR TRANSPORTATION FUEL USE, LOST AND UNACCOUNTED FOR GAS. THE APPLICABLE PERCENTAGE IS 3.299%, CONSISTING

OF 4.665% FOR THE CURRENT PERCENTAGE AND (1.366)% FOR THE SURCHARGE ADJUSTMENT. THESE PERCENTAGES SHALL BE APPLIED TO THE APPLICABLE QUANTITIES OF GAS

TENDERED TO TRANSPORTER FOR SHIPPER'S ACCOUNT AT THE RECEIPT POINT(S) INTO TRANSPORTER'S TRANSMISSION FACILITIES.

D/ SUBJECT TO ADJUSTMENT AS PROVIDED IN SECTION 3 OF RATE SCHEDULE S-2.

E/ PAYABLE AT TIME OF TRANSPORTATION AND DELIVERY.

F/ SHIPPER MUST REIMBURSE TRANSPORTER IN-KIND FOR GATHERING FUEL USE, LOST AND UNACCOUNTED FOR GAS. THE APPLICABLE PERCENTAGE IS 0.197%, CONSISTING

OF 0.233% FOR THE CURRENT PERCENTAGE AND (0.036)% FOR THE SURCHARGE ADJUSTMENT. THESE PERCENTAGES SHALL BE APPLIED TO THE APPLICABLE QUANTITIES OF GAS TENDERED

TO TRANSPORTER FOR SHIPPER'S ACCOUNT AT THE RECEIPT POINT(S) INTO TRANSPORTER'S GATHERING FACILITIES.