Northern Natural Gas Company

Fifth Revised Volume No. 1

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Effective Date: 07/09/2007, Docket: RP07-483-000, Status: Effective

Sixth Revised Sheet No. 141 Sixth Revised Sheet No. 141 : Effective

Superseding: Fifth Revised Sheet No. 141

RATE SCHEDULE FDD

Firm Deferred Delivery Service

Billing for FDD service will commence in accordance with Section 6 of this Rate

Schedule.

Northern may file with and seek Commission approval under Section 4 of the Natural Gas

Act to change any rates or charges set forth in this Rate Schedule from time to time,

whenever in Northern's judgment such change is necessary to assure just and reasonable

rates. Northern shall notify Shipper of such filing in accordance with Section 4(d) of

the Natural Gas Act. Northern may collect such change in rates in accordance with

Section 4(e) of the Natural Gas Act.

Transportation Service Associated with Storage Service

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Deliveries and redeliveries of the FDD quantities shall be subject to the rates, terms

and conditions of the upstream or downstream Firm or Interruptible Throughput Service

Agreement including transportation entitlements and capacity allocations.

A Shipper utilizing a Firm Throughput Service Agreement to transport its FDD volumes is

required to have a storage point as a Primary Receipt Point on such Firm Throughput

Service Agreement. The MDQ for such points shall be the Shipper's lowest daily maximum

withdrawal quantity during the Withdrawal Period. If the Shipper has multiple Firm

Throughput Service Agreements, the required MDQ may be split among the Agreements. In

the event a Shipper has a Firm Throughput Service Agreement but does not utilize such

Agreement to transport its FDD volumes, such Shipper will not be required to have a

storage point as a Primary Receipt Point. Such Shipper must provide Northern with an

affidavit affirming that it will not transport its FDD volumes under its Firm Throughput

Service Agreement. In the event such shipper subsequently decides to transport its FDD

volumes on its Firm Throughput Service Agreement, the Firm Throughput Service Agreement

shall be amended within 30 days of notice from Northern to add a storage point as a

Primary Receipt Point with an MDQ equal to the Shipper's lowest daily maximum withdrawal

quantity during the Withdrawal Period. If the amendment is not executed within the

30-day period, Northern will tender an amendment to the Shipper reflecting the addition

of the storage point and the MDQ. To balance the Shipper's total receipt point MDQ, the

primary receipt point MDQs will be reduced pro rata by an amount equal to the increase in

the storage point. Such amendment would be deemed effective as of the date issued by

Northern.

A transportation rate and fuel is charged both into and out of a Field Area storage

point. Except as provided below with regard to a transportation point and its associated

storage point, a transportation rate and fuel is charged for delivery to the Ogden

storage point. If redelivery from Ogden is to a Market Area point, there is no

additional transportation or fuel charge. If the redelivery is to a Field Area point,

the Field Area mileage/MID transportation rate and fuel is charged. To the extent a

volume is transported between a transportation point and its associated storage point, no

transportation fee or fuel shall be assessed. With the exception of Ogden, to the extent

a volume is transported from a storage point to a transportation point other than its own

associated transportation point then a transportation fee and fuel will be assessed.

When the Ogden storage point is used, the Shipper must use the same type of service

(i.e., firm or interruptible) to transport to and from the storage point, unless agreed

to otherwise by Northern on a non-discriminatory basis. However, in the event Shipper

has used interruptible service into the FDD account, Shipper may utilize released

capacity, under the terms and conditions of Section 47, Capacity Release, to transport

quantities from the FDD account.