Williston Basin Interstate Pipeline Co.

Second Revised Volume No. 1

Effective Date: 06/02/2006, Docket: RP06-344-000, Status: Effective

First Revised Sheet No. 184 First Revised Sheet No. 184 : Effective

Superseding: Original Sheet No. 184

GENERAL TERMS AND CONDITIONS (Continued)

5. MEASUREMENT (Continued)

5.6 Temperature: The temperature of the gas flowing through a

measuring station, as specified in Subsection 5.1 hereof, shall be

determined by an indicating thermometer, a recording thermometer, or an

electronic temperature measuring device installed and operated by

Transporter. The arithmetical average of the temperature so recorded or

integrated while the gas is flowing during each metering interval shall

be used in correcting volumes of gas received or delivered hereunder to

the unit of volume specified in Subsection 5.3 hereof.

5.7 Heating value: The heating value of the gas shall be determined

by Transporter by taking samples of the gas at the point(s) of receipt

and delivery or at point(s) representative of such receipt and/or

delivery point(s) at necessary intervals, but at least once each ninety

(90) days unless otherwise mutually agreed upon. Transporter may, at

its option, install and operate an intermittent sampling device to

automatically collect samples of the subject gas at the point(s) of

receipt and/or delivery or at point(s) representative of such point(s).

At Transporter's option, the heating value of the gas may be determined

by a recording calorimeter or gas chromatograph, installed by

Transporter at the point(s) of receipt and/or delivery, or at point(s)

representative of such point(s), in which event the arithmetic average

of the hourly flowing gas heating value recorded each day shall be

considered as the average heating value of the gas received or delivered

for that day. If the heating value of the gas is determined from gas

samples taken, such gas samples shall be run on Transporter's recording

calorimeter or gas chromatograph to determine the heating value of the

subject gas, and the results shall be applied to daily gas receipts

and/or deliveries during the billing interval for which the sample was

taken, unless otherwise mutually agreed upon.

5.8 Right to be present: Point Operator shall have the right to have

representatives present at the time of any installing, reading,

cleaning, changing, repairing, inspecting, testing, calibrating or

adjusting done in connection with Transporter's measuring equipment used

in measuring or checking the measurement of the receipts and/or

deliveries of gas. The records from such measuring equipment shall

remain the property of Transporter, but