Northern Natural Gas Company

Fifth Revised Volume No. 1

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Effective Date: 12/31/9999, Docket: RP07-330-000, Status: Accepted

First Revised Sheet No. 446A First Revised Sheet No. 446A : Pending

Superseding: Original Sheet No. 446A

Interruptible Deferred Delivery Service Agreement

Rate Schedule IDD

This Agreement shall incorporate and in all respects shall be subject to the GENERAL TERMS

AMD CONDITIONS and the applicable Rate Schedule(s) set forth in Northern's FERC Gas

Tariff, as may be revised from time to time. Northern may file and seek Commission

approval under Section 4 of the Natural Gas Act (NGA) at any time and from time to time to

change any rates, charges or other provisions set forth in the applicable Rate Schedule(s)

and the GENERAL TERMS AND CONDITIONS in Northern's FERC Gas Tariff, and Northern shall

have the right to place such changes in effect in accordance with the NGA, and this

Deferred Delivery Service Agreement shall be deemed to include such changes and any

changes which become effective by operation of law and Commission Order, without prejudice

to Shipper's right to protest the same.

Northern Natural Gas Company Shipper

By:_______________________________ By:________________________________

Title:_____________________________ Title:_______________________________

Date:______________________________ Date:_______________________________