Northern Natural Gas Company

Fifth Revised Volume No. 1

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Effective Date: 08/01/2004, Docket: RP04-420-000, Status: Effective

Second Revised Sheet No. 131 Second Revised Sheet No. 131 : Effective

Superseding: First Revised Sheet No. 131

RATE SCHEDULE TI

Interruptible Throughput Service

Unless otherwise mutually agreed to by Northern and Shipper,

all rates for service under (a) and (b) above of this Rate Schedule

shall be within the minimum and maximum levels shown on Sheet Nos. 52

and 53, respectively. The rate(s) Shipper shall pay will be set forth in

Shipper's Service Agreement, or otherwise agreed to in writing.

Northern will provide similar rates to similarly situated Shippers

upon request.

Other rates and charges for service under this Rate Schedule shall

include each of the following:

(c) A.C.A. Charge

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Shipper shall pay the applicable Annual Charge Adjustment ("A.C.A.")

pursuant to Section 36 of the "GENERAL TERMS AND CONDITIONS" for

volumes transported for Shipper.

(d) Fuel

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This Section (d), "Fuel", shall apply to all throughput.