Northern Natural Gas Company

Fifth Revised Volume No. 1

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

Fourth Revised Sheet No. 123 Fourth Revised Sheet No. 123 : Effective

Superseding: Third Revised Sheet No. 123

RATE SCHEDULE TFX

Firm Throughput Service

Unless otherwise mutually agreed to by Northern and Shipper,

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

Schedule, shall be within the minimum and maximum levels shown on

Sheet Nos. 51 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 services under this Rate Schedule shall

include each of the following:

(d) 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.

(e) Fuel

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

In addition to the daily quantities delivered, prior to the

beginning of each calendar month Shipper shall elect to either: