Williston Basin Interstate Pipeline Co.

Second Revised Volume No. 1

Effective Date: 11/01/1993, Docket: RS92- 13-004, Status: Effective

Original Sheet No. 347 Original Sheet No. 347 : Effective

GENERAL TERMS AND CONDITIONS (Continued)

39. TRANSITION COST RECOVERY MECHANISMS (Continued)

available actual data for the recovery period

ending the preceding March 31. The adjusted

fixed monthly surcharge resulting from the

Annual Reconciliation filing shall be

effective on July 1 following the filing of

the Annual Reconciliation. Such adjusted

fixed monthly surcharge shall be determined by

dividing the adjusted unamortized Account No.

191 underrecovery balance, plus the adjusted

interest, by the number of months remaining in

the applicable Total Recovery Period and

adding thereto carrying charges for the next

twelve (12) months. At the completion of the

applicable Total Recovery Period, Transporter

shall bill or return to Applicable Shipper(s),

including interest, any undercollections or

overcollections of the costs recoverable under

this Subsection 39.3.1.

39.3.1.4 Accounting Procedures for Account No. 191

Underrecovery Balance - Transporter shall

maintain separate principal and interest

subaccounts in Account No. 191 to record the

balance to be recovered from each Applicable

Shipper. The principal subaccounts for the

fixed monthly surcharge will be debited with

Transporter's applicable Account No. 191

underrecovery balance allocable to a specific

Applicable Shipper and permitted to become

effective by order(s) of FERC. Each month the

principal subaccounts shall be credited with

the principal portion of the fixed monthly

surcharge recovered from Applicable Shippers,

if any. 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 monthly

for interest accrued at the current FERC

published interest rate, and credited with the

interest portion of the fixed monthly

surcharge recovered.