Northern Natural Gas Company

Fifth Revised Volume No. 1

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Effective Date: 04/17/2010, Docket: RP10-502-000, Status: Effective

Eighth Revised Sheet No. 109 Eighth Revised Sheet No. 109

Superseding: Seventh Revised Sheet No. 109

RATE SCHEDULE TF

Firm Throughput Services

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:

(1) provide the appropriate Fuel; or

(2) purchase the appropriate Fuel from Northern.

The scheduling priority for Fuel shall be the same priority as

the respective volumes scheduled to flow. The overall Fuel

and unaccounted for percentages are set forth on Sheet No. 54, and

detailed by receipt-to-delivery MID path on Sheet Nos. 61-64 of this

Tariff.

A Shipper's fuel and unaccounted for is determined by multiplying the

volumes at the receipt point by the applicable receipt-to-delivery

MID path rate as shown on Sheet Nos. 61-64. If the Shipper's receipt

point is a mainline fuel point, the applicable fuel rate is the "ML

Fuel" rate from the MIDs matrix. If the Shipper's receipt point is a

field fuel point, the applicable fuel rate is the "TOTAL" rate from

the MIDs matrix.

Electric Compression

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In addition, Shipper shall pay the applicable Market Area and Field

Area electric compression commodity rate, as shown on Sheet No. 54 of

this Tariff, pursuant to Section 53B of the GENERAL TERMS AND

CONDITIONS of this Tariff.

(f) Daily Delivery Variance Charges (DDVC)

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Shipper shall pay the applicable Daily Delivery Variances

charges pursuant to Section 48 of the GENERAL TERMS AND

CONDITIONS of this Tariff.