Northern Natural Gas Company

Fifth Revised Volume No. 1

Effective Date: 09/01/2010, Docket: RP10-1139-000, Status: Effective

Original Sheet No. 66B.42 Original Sheet No. 66B.42

102/ For the period June 1, 2006 through March 31, 2011, the Total Monthly Charge

for 75,000 Dth/day (Non-Volumetric MDQ) of the Contract MDQ of 102,000 Dth/day

(Contract MDQ) shall be a combined demand and commodity rate of $0.l55/Dth/day

multiplied by 75,000 Dth/day multiplied by 30.4 days per month. Northern reserves

the right to allocate the discounted rate between the demand and commodity

components depending on actual volumes delivered, inclusive of surcharges; provided

however, that none of the rate components shall be above the maximum or below the

minimum rates set forth in Northern's FERC Gas Tariff, as amended from time to time

(Northern's FERC Gas Tariff).

For the period June 1, 2006 through March 31, 2011, for volumes delivered above

75,000 Dth/day up to 102,000 Dth/day (Volumetric MDQ), Shipper shall pay a combined

demand and commodity rate of $0.100/Dth multiplied by the volumes delivered above

75,000 Dth/day up to the Contract MDQ pursuant to this Agreement. Northern reserves

the right to allocate the discounted rate between the demand and commodity

components depending on actual volumes delivered, inclusive of surcharges; provided

however, that none of the rate components shall be above the maximum or below the

minimum rate set forth in Northern's FERC Gas Tariff.

The rates include all of Northern's current and future demand and commodity surcharges.

Northern will allocate the discounted rates above in its discretion between winter

and summer demand and commodity components within Northern's FERC Gas Tariff minimum

and maximum rates. In the event these rates exceed Northern's maximum Tariff rates,

Northern's maximum Tariff rates will apply. In the event these rates are less than

Northern's minimum Tariff rates, Northern's minimum Tariff rates will apply.

In addition, Shipper shall pay fuel use and unaccounted for in accordance with

Northern's FERC Gas Tariff.

Effective June 1, 2006 through March 31, 2011, the Overrun Rate for volumes above

the Contract MDQ delivered to the Pine Bend Refinery shall be $0.100/Dth.

The discounts stated herein are applicable to the receipt and delivery points listed

below. Shipper agrees that if any other receipt or delivery points are used either

on a primary or alternate basis, the discounted rates set forth herein will not be

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

points not listed below are used on the quantity equating to the sum of the highest

daily quantities delivered to such other points on any day during the month,

Delivery Points: Koch Rosemont TBS (POI #57545)

Market Area storage points used on an alternate basis for ultimate

delivery to the Koch Rosemont TBS

Receipt Points: Primary receipt points as set forth in Appendix A

All other Market Area Receipt Points on an alternate basis

In consideration for Northern agreeing to the rates contained herein, Shipper agrees

that it will serve the first 102,000 Dth/day of requirements for the Pine Bend

Refinery from Northern. If Shipper does not serve the first 102,000 Dth/day from

Northern, the discount shall be terminated and Northern's maximum rates will apply.