Northern Natural Gas Company                                                Original Sheet No. 66B.10
FERC Gas Tariff
Fifth Revised Volume No. 1




52/ For the period 11/01/2008 through 10/31/2018, for the contract MDQ, Shipper shall pay a total monthly
    reservation charge equal to $0.4330/Dth multiplied by the contract MDQ multiplied by 30.4. In addition,
    Shipper shall pay a commodity rate equal to the maximum rate provided in Northern's FERC Gas Tariff as
    amended from time to time. These rates include the applicable Annual Charge Adjustment and electric
    compression charges.

    In addition to the above rate(s), Shipper shall pay any applicable fuel use and unaccounted for.

    The negotiated rate stated above is applicable to all receipt and delivery points in Northern's Market Area;
    provided, however, if the negotiated rate becomes less than the annual average of the maximum rates set
    forth in Northern's FERC Gas Tariff, such rate would be applicable only to the receipt and delivery points
    listed below.  If any other points are used either on a primary or alternate basis, the negotiated rate will
    not be applicable  and the annual average of the applicable maximum rates will apply for the entire contract
    during the month that any points not listed below are used.

    Primary Receipt Point: NBPL/NNG Welcome Primary Delivery Point: Galva Ethanol Plant

    Alternate Receipt Point: Ogden Deferred Delivery Alternate Delivery Point: Ogden Deferred Delivery

    In addition to the above rates, Shipper shall pay (i) the FERC approved Carlton surcharge and (ii) all FERC
    approved surcharges that are made effective after the effective date of this Amendment and applicable to the
    service provided hereunder.

53/ For the period 11/01/2008 through 10/31/2013, Shipper shall pay a negotiated reservation rate for
    3,600 DTH/day of winter entitlement equal to the winter maximum reservation rate as revised from time to
    time plus capital of $0.6651 DTH/day (currently the reservation rate would be equal to $1.1636/Dth/day).

    In addition, Shipper shall pay a commodity rate equal to the maximum rate provided in Northern's FERC Gas
    Tariff. This rate includes the applicable Annual Charge Adjustment and electric compression charges.

    In addition to the above rates, Shipper shall provide any applicable fuel use and unaccounted-for, and pay
    any applicable FERC-approved reservation and commodity surcharges.


























Issued by: Mary Kay Miller, V.P. Regulatory & Government Affairs
Issued on: October 31, 2008                                              Effective: November 1, 2008