Northern Natural Gas Company

Fifth Revised Volume No. 1

Effective Date: 07/21/2009, Docket: RP96-272-095, Status: Effective

First Revised Sheet No. 66B.21 First Revised Sheet No. 66B.21

Superseding: Original Sheet No. 66B.21

76/ For the period 05/01/2009 through 10/31/2009, Shipper shall pay a volumetric

reservation rate equal to $0.0900/DTH multiplied by the daily volumes delivered

pursuant to this Agreement up to the total MDQ of the Agreement.

In addition to the above reservation rate, Shipper shall (i) pay a commodity rate

equal to the maximum commodity rate provided in Northern's FERC Gas Tariff as

revised from time to time (these rates include the applicable Annual Charge

Adjustment and electric compression charges), (ii) provide any applicable fuel

use and unaccounted for, and (iii) pay all FERC approved surcharges applicable to

the service provided hereunder.

Notwithstanding the paragraphs above, Northern shall receive a minimum of

$100,000 in total revenue from reservation and commodity charges excluding

overrun under this Agreement.

For overrun volumes, Shipper shall pay an overrun rate of $0.1200/DTH on volumes

ultimately delivered to the primary and alternate delivery points listed herein.

In consideration for the above rates, all gas transportation services for

Shipper's Plants shall be provided for under this Agreement or Contract

No. 112052. If another agreement is used to serve these markets, the rates

granted herein shall be terminated for any month in which another agreement is

used and Northern's maximum rate will apply. This clause does not apply on days

Northern cannot provide such service. Shipper's use of fuel oil is not precluded

herein.

The rate stated herein is applicable to the receipt and (or) delivery points (POI)

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

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

applicable and Northern's maximum tariff rates will apply for the entire contract if

any points not listed below are used.

Primary Receipt Point: NBPL/NNG Ventura Primary Delivery Point: Minneapolis #1Q

Alternate Receipt Points: GRLKS/NNG Carlton, Ventura Pooling Point, Viking

Chisago/Isanti, Ventura Deferred Delivery Alternate Delivery Points: GRE Cambridge

Power Plant, GRE Elk River Plant, MID 17 Pooling Point, Pleasant Valley Power Plant,

Ventura Pooling Point, Ventura Deferred Delivery

For the month of May, 2009, the total MDQ of the agreement is 90,000 DTH/day. For

the months of June through October 2009, the total MDQ of the agreement is

120,000 DTH/day.