Northern Border Pipeline Company

First Revised Volume No. 1

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Effective Date: 06/01/2001, Docket: RP01-388-000, Status: Effective

First Revised Sheet Number 233 First Revised Sheet Number 233 : Effective

Superseding: Original Sheet Number 233

GENERAL TERMS AND CONDITIONS

5. QUALITY OF GAS (Continued)

5.3 Failure to Conform

If gas delivered by a Shipper does not comply with the

quality specifications set out in Subsection 5.1 hereof,

Company shall have the right, in addition to all other

remedies available to it by law, to refuse to accept any

such gas through the issuance of an OFO. Company may, at

its option and upon notice to Shipper, accept receipt of gas

not complying with the quality specifications set out in

Subsection 5.1 hereof provided Company, at the expense of

such Shipper, makes all changes necessary to bring such gas

into compliance with such specifications; provided, however,

that nothing herein shall be inconsistent with FERC Order

No. 45. Any change in the gross heating value of gas

treated by Company pursuant to this Subsection 5.3 shall,

for purposes of Section 13 hereof, be appropriately

reflected in the total Btu content of gas received by

Company from the Shipper whose gas is so treated.

5.4 Quality Standards of Gas Transported by Company

Company shall use reasonable diligence to deliver gas under

a Shipper's Agreement which shall meet the quality

specifications set out in Subsection 5.1 hereof, but shall

only be obligated to deliver gas of the quality which

results from the commingling of the gas received by Company

from Shippers and, except as Company may choose to do so

pursuant to Subsection 5.3 hereof, shall not be required to

treat any gas delivered to it by a Shipper. Company may

treat any gas delivered to it by a Shipper to the extent

required, in Company's opinion, to prevent damage to or

interference with the efficient operation of Company's

facilities, provided it determines, except in the case of

treatment pursuant to Subsection 5.3 hereof, that the gross

heating value of such gas will not be materially reduced, or

the other quality standards of such gas materially adversely

affected, thereby.