Williston Basin Interstate Pipeline Co.

Second Revised Volume No. 1

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Effective Date: 01/01/1999, Docket: RP98-104-004, Status: Effective

First Revised Sheet No. 379 First Revised Sheet No. 379 : Effective

Superseding: Sheet No. 379

GENERAL TERMS AND CONDITIONS (Continued)

48. POOLING SERVICE (Continued)

48.4.3.1 Scheduling and interruption priorities of

gas received from the WBI Storage Pool shall be based

on the executed storage Service Agreement(s) utilized

to withdraw gas from storage in instances of storage

withdrawal capacity constraints and on the executed

transportation Service Agreement(s) used to deliver gas

from the pool to the ultimate delivery points(s) in

instances of pipeline capacity constraints, in

accordance with the priority of service listings in

Subsections 9.22, 9.23 and 9.20, 9.21 of these General

Terms and Conditions, as applicable.

48.4.4 Scheduling and interruption priorities for the

transportation of gas that is pooled are the same as that

for the transportation of gas that is not pooled.

48.5 Variances and Imbalances: No nomination variances or

imbalances shall be created at any pool.

48.5.1 Nomination variances shall be calculated under the

downstream executed transportation Service Agreement and

shall be deemed to have been created at the physical receipt

and/or delivery point(s), as applicable, pursuant to the

procedures set forth in Section 15 of these General Terms

and Conditions.

48.5.2 Imbalances shall be calculated and cleared under

the downstream executed transportation Service Agreement

pursuant to the procedures set forth in Section 15 of these

General Terms and Conditions.

48.6 Transportation Service Charges: There will be no

transportation service charges assessed for transportation of gas

from an associated receipt point(s) to a designated pool.

Transportation of gas from a non-associated receipt point(s) to a

designated pool and/or from a pool to the ultimate delivery

point(s) shall be assessed the applicable transportation service

charges set forth in the executed Service Agreement under which

the gas was transported.