Northern Natural Gas Company

Fifth Revised Volume No. 1

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

Third Revised Sheet No. 125D Third Revised Sheet No. 125D

Superseding: Second Revised Sheet No. 125D

RATE SCHEDULE LFT

Limited Firm Throughput Service

5. OVERRUN

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Overrun Volumes. Northern agrees to transport volumes in excess of the

MDQ contracted for ("Overrun Volumes") on an interruptible basis for Shipper

in accordance with the terms and conditions of this Rate Schedule and the

GENERAL TERMS AND CONDITIONS of this Tariff, provided that sufficient

capacity exists to transport such Overrun Volumes.

Within total MDQ - While staying within its MDQ in the Area contracted for,

should Shipper, or its Designee, desire to nominate volumes for

transportation a) in excess of the MDQ specified at a point in the Limited

Firm Throughput Service Agreement (Primary Point) or b) at any other point

on Northern's system (Alternate Point), such excess volume shall be

considered firm volumes for billing purposes and shall be transported if

capacity is available and shall be scheduled pursuant to Section 29 of the

GENERAL TERMS AND CONDITIONS of this Tariff.

In Excess of total MDQ - Should Shipper, or its Designee, desire to nominate

volumes for transportation in excess of its MDQ contracted for, such excess

volumes will be interruptible volumes for nomination, scheduling and billing

purposes and shall be scheduled for transportation if capacity is available

pursuant to the terms and conditions of Rate Schedule TI and shall be

scheduled pursuant to Section 29 of the GENERAL TERMS AND CONDITIONS of this

Tariff.

6. RATES AND CHARGES.

The monthly billing for LFT Throughput Service shall be the sum of:

(a) Throughput Reservation Charges

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Shipper shall be billed monthly for reservation charges

associated with its Field, Market or combined LFT agreements.

The monthly bill will be derived by using the applicable LFT

Reservation Rate in effect for the month for the LFT Throughput Service

as shown on Sheet No. 51 of this Tariff, multiplied by the MDQ as shown

on the LFT Agreement. On any day in which a Limited Day has been

called and LFT service is unavailable, Northern shall provide Shipper

a credit.

(b) Throughput Commodity Charge

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The total units of LFT volumes during the respective month shall be

multiplied by the Commodity Rate for each LFT unit transported

as shown on Sheet No. 51 of this Tariff.

The Throughput Commodity rate for LFT service shall be the

commodity rate in effect for the respective month of the LFT

agreement. Such rates are set forth on Sheet No. 51.