Northern Border Pipeline Company

First Revised Volume No. 1

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Effective Date: 04/01/2007, Docket: RP07-311-001, Status: Effective

Substitute Fifth Revised Sheet No. 0 Northern Border Pipeline Company: First Revised Volume No. 1

Substitute Fifth Revised Sheet No. 0 : Effective

Superseding: Fourth Revised Sheet No. 0

FERC GAS TARIFF

First Revised Volume No. 1

of

NORTHERN BORDER PIPELINE COMPANY

Filed with

Federal Energy Regulatory Commission

Communications Concerning This Tariff

Should Be Addressed To:

Bambi L. Heckerman

Manager, Regulatory Affairs

Telephone: (402) 492-7575

Facsimile: (402) 492-7492

TransCanada Northern Border Inc., its Operator

P. O. Box 542500

Omaha, Nebraska 68154-8550

Courier Address: 13710 FNB Parkway

Omaha, Nebraska 68154-5200