Northern Natural Gas Company

Fifth Revised Volume No. 1

Effective Date: 03/08/2009, Docket: RP09-344-000, Status: Effective

First Revised Sheet No. 67A First Revised Sheet No. 67A

Superseding: Original Sheet No. 67A

1/ Unless otherwise noted, negotiated Service Agreements do not deviate in any material respect from the

applicable form of service agreement set forth in Northern's FERC Gas Tariff. The negotiated rates

beginning on Sheet No. 67 reflect negotiated rate transactions that require 30 day filings.

2/ The rate stated in the Negotiated Rate column is exclusive of all surcharges.

3/ As noted on Tariff Sheet Nos. 80, 80A or 80B, this contract is also a non-conforming agreement.

4/ 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 2010

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

Demarcation plus (c) $0.0550 ("Formula Rate"). The Transaction charges shall be the Formula Rate

multiplied by the Contract Total Quantity.

5/ 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) July 2009 "Inside FERC Gas Market Report" Spot Gas Delivered to Pipelines, Northern Natural

Gas Company, Demarcation minus (c) $0.15 ("Formula Rate"). The Transaction charges shall be the

Formula Rate multiplied by the Contract Total Quantity.