Northern Border Pipeline Company
FERC Gas Tariff
First Revised Volume No. 1

Third Revised Sheet No. 4
Superseding
Second Revised Sheet No. 4

                      Third Revised Sheet Number 4 (Map)
                             is not required to be
                          filed in electronic format.

Issued by: Bambi L. Heckerman, Manager, Regulatory Affairs
Issued on: April 28, 2009                     Effective on: June 1, 2009