Northern Natural Gas Company

Fifth Revised Volume No. 1

Effective Date: 11/01/2009, Docket: RP09-569-000, Status: Pending

31 Revised Sheet No. 54 31 Revised Sheet No. 54

Superseding: 30 Revised Sheet No. 54

R A T E S C H E D U L E S T F, T F X, L F T, G S - T, T I, & F D D

Fuel Percentages/Electric Compression Rates

Percentages

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FUEL PERCENTAGES: 1/

Market Area (including Out-of-Balance) 1.49%

Field Area 2/ 3/ 5/ 6/

UNACCOUNTED FOR PERCENTAGE (including Out-of-Balance) 0.32% 4/ 5/

FDD Storage Fuel 0.91%

Electric Compression

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COMMODITY RATES: 1/

Market Area $0.0003

Field Area $0.0000

1/ Northern will adjust its Fuel percentages and electric compression commodity

rates in accordance with Sections 53A and 53B, respectively, of the General

Terms and Conditions of this Tariff.

2/ Fuel shall be determined by Mileage Indicator Districts (MIDS) for the Field

Area.

3/ Fuel charged in the Field and Market Areas for a pooling transaction or for

processing plant transactions will not exceed the fuel charged on a unified

Field-to-Market transaction having the same initial Field receipt point and

ultimate Market delivery point, i.e., the total fuel collected for

transactions that go into and out of pooling points or processing plants in

either the Field Area or the Market Area will be no greater than the fuel

collected on the total path between the original receipt point and the

ultimate delivery point, subject to the shipper(s) providing Northern the

requisite information.

4/ The Unaccounted For percentage utilizes the most recent twelve-month period

ending December 31.

5/ Sheet No. 54A identifies the specific transportation transactions exempt

from fuel and unaccounted-for retention charges.

6/ The Out-of-Balance Fuel Percentage for deliveries in MIDS 1-7 shall be the

applicable Section 1 Mainline Fuel percentage, and for deliveries in

MIDS 8-16B shall be the applicable Section 2 Mainline Fuel percentage.

In the event facilities have been abandoned, Northern shall have the right to file to

reduce the applicable MID fuel percentage(s) on a common basis for all transactions

affected by the abandonment to reflect the reduction in use for the remainder of the

PRA period. In the event such abandoned facilities (gas compressors) have been

replaced with electric compressors installed after October 1, 1998, and Northern

reduces the applicable MID fuel percentages, Northern has the right to file to

increase the applicable electric compression commodity rate.