Williston Basin Interstate Pipeline Co.

Second Revised Volume No. 1

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Effective Date: 08/23/2004, Docket: RP04-410-000, Status: Effective

Third Revised Sheet No. 381 Third Revised Sheet No. 381 : Effective

Superseding: Second Revised Sheet No. 381

GENERAL TERMS AND CONDITIONS (Continued)

49. NOMINATION AGGREGATION SERVICE

49.1 For purposes of this Section 49, the term "nomination

aggregation" means the aggregation of nominations from multiple physical

receipt points to a single nomination aggregation point (nomination

aggregation point) on Transporter's system, and the disaggregation of

such receipt nominations from the nomination aggregation point to

multiple physical delivery points.

49.2 Availability: In order to reduce the number of nominations a

Shipper is required to make under Section 9 of these General Terms and

Conditions, Transporter will provide a Nomination Aggregation Service on

the basis set forth herein and subject to all other terms and conditions

of this Tariff and Shipper's executed Service Agreement under

Transporter's Rate Schedule FT-1 or IT-1. The Nomination Aggregation

Service shall only be available on a single Service Agreement basis and

shall not be offered among different Rate Schedules or Service

Agreements. The following volumes of gas shall not be eligible for

Nomination Aggregation Service:

49.2.1 Volumes received from Transporter's aggregate storage

fields.

49.2.2 Volumes which have been granted a discount rate due to a

specific receipt/delivery point combination.

49.2.3 Volumes pooled under Transporter's Pooling Service, as

defined in Section 48 of these General Terms and Conditions.

49.2.4 Volumes nominated from any alternate receipt point under

executed Rate Schedule FT-1 Service Agreements.

49.3 Nomination, Scheduling and Interruption Procedures: Nomination

Aggregation Service provided hereunder shall be in accordance with

Section 9 of the General Terms and Conditions of this Tariff. Each

Shipper's nominations to and from the nomination aggregation point must

balance daily. If volumes nominated by receipt point to the nomination

aggregation point each day do not match volumes scheduled and confirmed

for delivery that day from the nomination aggregation point, Transporter

shall schedule the lower volume. Scheduling and interruption priorities

shall be based on the transportation