Northern Border Pipeline Company

First Revised Volume No. 1

Effective Date: 07/26/2010, Docket: RP10-888-000, Status: Effective

Third Revised Sheet No. 178 Third Revised Sheet No. 178

Superseding: Second Revised Sheet No. 178

RATE SCHEDULE T-1B

FIRM BACKHAUL SERVICE

1. AVAILABILITY (Continued)

1.2 Limitation on Availability of Service (Continued)

1.23 Prerequisite to Backhaul Service (Continued)

as a nominated Point of Receipt is permitted under this Rate

Schedule. However, Company provides no guarantee that it will be

able to confirm and schedule nominations under a T-1B Agreement

that request the receipt and/or delivery of gas by displacement.

2. APPLICABILITY AND CHARACTER OF SERVICE

2.1 Applicability

This Rate Schedule shall apply to firm Backhaul transportation service after the

Billing Commencement Date, whether or not gas is actually transported, under a

Shipper's T-1B Transportation Agreement, other than service specifically

provided for in another Rate Schedule. A Shipper's Maximum Receipt Quantity

shall be a uniform quantity throughout the contract term, except that the

Company may, on a not unduly discriminatory basis, agree to differing monthly

amounts in the Shipper's Maximum Receipt Quantity during the term of Shipper's

contract. Shipper's Maximum Receipt Quantity and any differing amounts in the

Maximum Receipt Quantity, as well as the period of such differing Maximum

Receipt Quantity amounts, shall be specified in the executed Firm Backhaul

Service Agreement.

2.2 Excess Receipts

Shipper may not nominate transportation in excess of Shipper's Maximum

Receipt Quantity; however if quantities of gas are transported in excess of

Shipper's Maximum Receipt Quantity as specified in Shipper's T-1B

Transportation Agreement, such shall be scheduled, received, and delivered

on an interruptible basis. For such excess receipts, Shipper shall pay the

Maximum Commodity Rate pursuant to Rate Schedule IT-1.