Northern Natural Gas Company                                              Fifth Revised Sheet No. 447
FERC Gas Tariff                                                                           Superseding
Fifth Revised Volume No. 1                                               Fourth Revised Sheet No. 447

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(Placement on page, number of pages, format, capitalization and font my vary)


                          Firm Deferred Delivery Service Agreement
                                      Rate Schedule FDD
                              2008 Market-Based Rate Expansion


                                                  Date:__________________



Shipper's Name and Address for Notices:           Shipper's Name and Address for Invoices:
_______________________________________           ________________________________________
_______________________________________           ________________________________________
ATTN:__________________________________           ATTN:___________________________________


Contract No.:    _________________



Term:  From__________   to__________


Firm Storage Quantity - Maximum FDD Account Balance Quantity: _______ Dth

Through ________ the rates and charges for services under this Agreement shall be as
follows:

        Reservation Charge - The reservation charge shall be equal to ________ and shall be
        billed pursuant to the terms of Northern's FERC Gas Tariff.

        Capacity Charge - The capacity charge shall be equal to _______ and shall be billed
        pursuant to the terms of Northern's FERC Gas Tariff.

        Injection Charge - The injection charge per Dth shall be equal to _______ and shall
        be billed pursuant to the terms of Northern's FERC Gas Tariff. The injection charge
        in the Withdrawal Period shall equal _______.

        Withdrawal Charge - The withdrawal charge per Dth shall be equal to _______ and
        shall be billed pursuant to the terms of Northern's FERC Gas Tariff.

        Fuel - The FDD storage fuel rate shall be equal to ________ and shall be billed
        pursuant to the terms of Northern's FERC Gas Tariff.

        Rollover Charge - The rollover charge per Dth shall be equal to _______,
        and shall be billed pursuant to the terms of Northern's FERC Gas Tariff.
        [If applicable - Provided, however, through _______, the rollover charge per Dth
        shall be equal to _______  for any volume less than or equal to _______ of the
        contract FSQ on May 31 of each year.]

        Authorized Overrun Charge - The authorized overrun charge shall be equal to _______
        and shall be billed pursuant to the terms of Northern's FERC Gas Tariff.

        [if applicable - Other Rate Provisions]


Issued by: Mary Kay Miller, V.P. Regulatory & Government Affairs
Issued on: January 21, 2009                                             Effective: February 21, 2009