Northern Natural Gas Company

Fifth Revised Volume No. 1

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Effective Date: 06/05/2009, Docket: RP96-272-093, Status: Effective

Fourth Revised Sheet No. 66B.14 Fourth Revised Sheet No. 66B.14

Superseding: Third Revised Sheet No. 66B.14

62/ For the period 11/01/2009 through 10/31/2019 Shipper shall pay a negotiated reservation rate

equal to $0.3686/Dth/day multiplied by the contract quantity multiplied by 30.4, inclusive of

surcharges, and a commodity rate equal to the maximum rate provided in Northern's FERC Gas

Tariff as revised from time to time. In addition, Shipper shall provide any applicable fuel use

and unaccounted-for, and pay the electric compression charge and the Carlton commodity

surcharge, and any other applicable FERC approved commodity surcharges.

The reservation rate in subparagraph a. above shall be adjusted based on Northern's actual

capital requirements.

In the event the adjusted rate based on Northern's actual capital requirements results in a rate

less than Northern's maximum annual average reservation rate the following rate provisions will

apply:

Shipper shall pay a base reservation rate, inclusive of surcharges, allocated between summer and

winter such that none of the rate components shall be above the maximum or below the minimum

rates set forth in Northern's FERC Gas Tariff, and a commodity rate equal to the maximum rate

provided in Northern's FERC Gas Tariff as revised from time to time. In addition, Shipper shall

provide any applicable fuel use and unaccounted-for, and pay the electric compression charge and

the Carlton commodity surcharge, and any other applicable FERC approved commodity surcharges.

In no event shall the rates exceed the maximum rate or be less than the minimum rate authorized

under Northern's FERC Gas Tariff, as revised from time to time. In the event the rates agreed

to pursuant hereto are or become greater than the maximum or less than the minimum under

Northern's FERC Gas Tariff, as revised from time to time, then Shipper agrees that Northern will

immediately decrease the rate(s) herein down to the maximum or increase the rate(s) herein up to

the minimum. In such event, other rate components may be adjusted upward or downward to achieve

the agreed-upon overall rate, provided that the resulting rate component shall not exceed the

maximum rate or be below the minimum rate applicable to the rate component.

This discounted rate is applicable only to the receipt and delivery points listed below. If any

other points are used either on a primary or alternate basis, the discounted rate will not be

applicable and Northern's maximum rates will apply for the entire contract during the month that

any points not listed above are used.

63/ The Total Transaction Rate charged shall be as follows: (a) December 2009 "Inside FERC Gas

Market Report" Spot Gas Delivered to Pipelines, Northern Natural Gas Company, Demarcation minus

(b) April 2009 "Inside FERC Gas Market Report" Spot Gas Delivered to Pipelines, Northern Natural

Gas Company, Demarcation minus (c) $0.28 ("Formula Rate"). The Transaction charges shall be the

Formula Rate multiplied by the Contract Total Quantity.

64/ The Total Transaction Rate charged shall be as follows: (a) January 2010 "Inside FERC Gas

Market Report" Spot Gas Delivered to Pipelines, Northern Natural Gas Company, Demarcation minus

(b) April 2009 "Inside FERC Gas Market Report" Spot Gas Delivered to Pipelines, Northern Natural

Gas Company, Demarcation minus (c) $0.28 ("Formula Rate"). The Transaction charges shall be the

Formula Rate multiplied by the Contract Total Quantity.

65/ The Total Transaction Rate charged shall be as follows: (a) February 2010 "Inside FERC Gas Market

Report" Spot Gas Delivered to Pipelines, Northern Natural Gas Company, Demarcation minus

(b) October 2009 "Inside FERC Gas Market Report" Spot Gas Delivered to Pipelines, Northern

Natural Gas Company, Demarcation minus (c) $0.14 ("Formula Rate"). The Transaction charges shall

be the Formula Rate multiplied by the Contract Total Quantity.

66/ The Total Transaction Rate charged shall be as follows: (a) February 2010 "Inside FERC Gas Market

Report" Spot Gas Delivered to Pipelines, Northern Natural Gas Company, Demarcation minus (b)

September 2009 "Inside FERC Gas Market Report" Spot Gas Delivered to Pipelines, Northern Natural

Gas Company, Demarcation minus (c) $0.1550 ("Formula Rate"). The Transaction charges shall be the

Formula Rate multiplied by the Contract Total Quantity.