Williston Basin Interstate Pipeline Co.

Second Revised Volume No. 1

Effective Date: 08/01/1998, Docket: RP98-253-000, Status: Effective

First Revised Sheet No. 726 First Revised Sheet No. 726 : Effective

Superseding: Original Sheet No. 726

OPERATIONAL BALANCING AGREEMENT (Continued)

ARTICLE II

IDENTIFICATION, ELIMINATION OF IMBALANCES

2.1 The Parties agree to communicate by a mutually agreeable

method the confirmed nominations for the gas to be received and/or

delivered at each POI each day. Such confirmed nominations shall

represent the aggregate of nominations made by third parties in

conformance with the provisions of Williston Basin's and

________________________'s Service Agreements and scheduled by

Williston Basin and ____________ for receipts and/or deliveries at the

POI(s).

2.2 The Parties agree to make a reasonable effort on a daily

basis to maintain the actual quantity flowing through the POI(s) at a

level equal to the aggregate of the confirmed receipt and/or delivery

nominations.

2.3 The Party operating the measurement equipment (measuring

Party) shall, as soon as possible, but not later than the 10th day of

the month following the month of service, notify the other Party of

the actual quantities received and/or delivered at the POI(s) that

month. Any difference between the confirmed nominations for the month

and actual receipts and/or deliveries for that month related to each

Party's Service Agreements under which receipts and/or deliveries are

scheduled at each POI (in dkt) shall be deemed to be the Monthly

Imbalance Quantity as between the Parties at that POI.

2.4 The measuring Party operating the measurement equipment at

each POI shall issue a statement reflecting the Monthly Imbalance

Quantities for each POI as defined in Paragraph 2.3 and the Cumulative

Imbalance Quantity for each month by the last business day of the

following month. Such statement shall be mailed to the address

reflected in Article VI herein.

2.5 Each month, the Monthly Imbalance Quantity at each POI

will be aggregated and accumulated with all previous Monthly Imbalance

Quantities at each POI, if any, including Monthly Imbalance Quantities

at each POI as of the effective date hereof, to determine the

Cumulative Imbalance Quantity for each POI. Such Monthly Imbalance

Quantities shall be aggregated and reported separately for each POI.

2.6 The Parties agree to deliver and/or receive quantities,

designated as balancing quantities, in excess of or less than the

current confirmed nominations at the POI(s) so that the Cumulative

Imbalance Quantity is eliminated as soon as is operationally feasible,

but in no event later than 60 days following the determination of any

Cumulative Imbalance Quantity.