Northern Border Pipeline Company

First Revised Volume No. 1

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Effective Date: 03/22/2010, Docket: RP10-385-001, Status: Effective

Substitute Second Revised Sheet No. 249A Substitute Second Revised Sheet No. 249A

Superseding: Substitute First Revised Sheet No. 249A

GENERAL TERMS AND CONDITIONS

10. NOMINATIONS/CONFIRMATIONS/SCHEDULING/INTERRUPTION OF SERVICE

(Continued)

10.4 Capacity Allocation and Confirmation Process (Continued)

10.41 Allocation of Constrained Pipeline Capacity

In those instances in which the aggregate quantity

of all validated nominations exceed the physical

capacity of Company's system at a specific pipeline

location or segment, Company will allocate capacity

to the validated nominations at the constrained

pipeline location in the following order:

(a) IPID Rate Schedule T-1/T-1B firm transportation

nominations.

Pro rata allocation of capacity within this

nomination class, if necessary, will be based

on Shipper's Maximum Receipt Quantity.

(b) IPOD Rate Schedule T-1/T-1B firm transportation

nominations.

Pro rata allocation of capacity within this

nomination class, if necessary, will be based

on Shipper's Maximum Receipt Quantity.

(c) OPID Rate Schedule T-1/T-1B firm transportation

nominations.

Pro rata allocation of capacity within this

nomination class, if necessary, will be based

on Shipper's Maximum Receipt Quantity.