Williston Basin Interstate Pipeline Co.

Second Revised Volume No. 1

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

Third Revised Sheet No. 303 Third Revised Sheet No. 303

Superseding: Second Revised Sheet No. 303

GENERAL TERMS AND CONDITIONS (Continued)

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

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

36.3.3 Determination of Throughput Surcharge - The throughput

surcharge for the total recovery period shall be calculated to

recover a percentage to be determined by Transporter of the

amortized amount. The throughput surcharge shall be determined by

dividing the annual principal amount of the costs to be recovered

through the surcharge, plus carrying charges in accordance with

Section 154.501 of the FERC's Regulations, by the effective total

throughput. Such surcharge rate will be specified, as applicable,

on tariff sheets contained in Transporter's FERC Gas Tariff,

Second Revised Volume No. 1. Such rate will be in effect until

adjusted in accordance with Subsection 36.3.4. The throughput

surcharge shall be assessed to all Shippers subject to

Transporter's applicable transportation rates and/or Rate

Schedules contained in Transporter's FERC Gas Tariff, Second

Revised Volume No. 1.

Transporter may from time to time, and at any time, selectively

and separately discount any or all of the throughput surcharge

applicable to transportation service for any Shipper receiving

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

Transporter under its FERC Gas Tariff, Second Revised Volume No.

1. Such discounting, however, shall be in accordance with Section

284.7(c)(5) of the FERC's Regulations. The maximum throughput

surcharge shall be stated on Sheet Nos. 15, 18 and 21 of

Transporter's FERC Gas Tariff, Second Revised Volume No. 1. The

minimum rate for each such throughput surcharge is zero.

36.3.4 Annual Throughput Surcharge Reconciliation - On or

before May 31 of each year, commencing on May 31, 1991,

Transporter shall recalculate the throughput surcharge to reflect

revisions for the actual FERC published interest rates during the

recovery period ending the preceding March 31 applied to actual

buyout/buydown payments made by Transporter, reduced, as

applicable, to reflect interest owed by Transporter to Shipper(s)

on buyout/buydown costs collected from Shipper(s)