Northern Border Pipeline Company

First Revised Volume No. 1

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Effective Date: 04/01/1997, Docket: RP97- 22-003, Status: Effective

First Revised Sheet Number 232 First Revised Sheet Number 232 : Effective

Superseding: Original Sheet Number 232

GENERAL TERMS AND CONDITIONS

5. QUALITY OF GAS (Continued)

5.1 Quality Standards of Gas Received by Company (Continued)

5.13 The gas shall not contain more than 0.3 grains of

hydrogen sulphide per Ccf.

5.14 The gas shall not contain more than 2 grains of

total sulphur per Ccf.

5.15 The gas shall contain not more than 0.3 grains of

mercaptan sulphur per Ccf, or such higher content

as, in Company's judgment, will not result in

deliveries by Company to Shippers of gas containing

more than 0.3 grains of mercaptan sulphur per Ccf.

5.16 The gas shall not contain more than 2 percent by

volume of carbon dioxide.

5.17 The gas shall not have a water vapor content in

excess of 4 pounds per MMcf.

5.18 The gas shall be as free of oxygen as it can be kept

through the exercise of all reasonable precautions

and shall not in any event contain more than 0.4

percent by volume of oxygen.

5.19 The gas shall have a gross heating value of not less

than 967 Btu per cf.

5.2 Quality Tests

At each Point of Receipt of a Shipper, Company shall cause

tests to be made, by approved standard methods in general

use in the gas industry, to determine whether the gas

conforms to the quality specifications set out in

Subsection 5.1 hereof. Such tests shall be made at such

intervals as Company may deem reasonable, and at other

times, but not more often than once per day, at the request

of any Shipper.