Northern Natural Gas Company

Fifth Revised Volume No. 1

Effective Date: 08/01/2009, Docket: RP09-786-001, Status: Effective

Sub 1 Revised 30 Revised Sheet No. 54 Sub 1 Revised 30 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) 2.68%

Field Area 2/ 3/ 5/ 6/

UNACCOUNTED FOR PERCENTAGE (including Out-of-Balance) -0.12% 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

May 31, 2009. For deliveries subject only to UAF, the UAF rate is zero; provided,

however, Northern will issue a volume credit on the Shipper's monthly imbalance

statement equivalent to the -0.12% UAF associated with such deliveries.

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.