Northern Natural Gas Company

Fifth Revised Volume No. 1

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Effective Date: 04/17/2010, Docket: RP10-502-000, Status: Effective

Fourth Revised Sheet No. 133 Fourth Revised Sheet No. 133

Superseding: Third Revised Sheet No. 133

RATE SCHEDULE TI

Interruptible Throughput Service

(f) Fees

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Upon billing by Northern and in a manner mutually agreed to,

Shipper shall bear all fees imposed by governmental or

regulatory bodies for any filings required in conjunction with

service provided for Shipper.

(g) PowerPak Option

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Shipper may elect to include a PowerPak Option with a service

agreement under this Rate Schedule and service under one of Shipper's

Deferred Delivery Service Agreements. Each service shall be

separately contracted, nominated, scheduled and/or curtailed in

accordance with the GENERAL TERMS AND CONDITIONS of this tariff. The

PowerPak option can only be at points with EFM with real time

communication for the location. The PowerPak Option shall apply to

all volumes under the applicable service agreements or transaction.

The maximum rate shall be the maximum TI rate plus the maximum rate

for the applicable Deferred Delivery Service. A Shipper will be

charged separately stated transportation and deferred delivery rates.

Northern and Shipper will agree to the specific volumetric parameters

(such as maximum injections, withdrawals, and inventory limitation)

as set forth in the applicable deferred delivery service agreement or

transaction. Shipper must execute a PowerPak addendum (as set forth

on Sheet 432 herein as may be revised from time to time) to its

throughput service agreement. To the extent Northern and Shipper have

agreed to a discounted rate and Shipper fails to deliver or receive

volumes in accordance with the parameters, which shall be set forth in

the related service agreements or transaction, the rate shall be the

maximum rate applicable to both rate schedules. Northern, on behalf

of the shipper, will schedule volumes to and from the storage account

to minimize imbalances and delivery point variances. This

reconciliation shall take place daily during the last nomination cycle

of the gas day. This reconciliation will be based on the information

available to Northern. Northern will not be responsible for any

remaining imbalances or scheduling variances ultimately charged.

Shipper shall resolve any remaining imbalances in accordance with the

tariff and shall pay any applicable DDVC charges.

(h) Other

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Any additional costs which may be properly billed in

accordance with the provisions of this Rate Schedule and the

GENERAL TERMS AND CONDITIONS.

7. GENERAL TERMS AND CONDITIONS.

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The GENERAL TERMS AND CONDITIONS of this Tariff are hereby

incorporated into and made a part of this Rate Schedule.