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. 185 First Revised Sheet No. 185 : Effective

Superseding: Original Sheet No. 185

GENERAL TERMS AND CONDITIONS (Continued)

5. MEASUREMENT (Continued)

upon request Transporter will submit to Point Operator copies of its

records and charts, together with calculations therefrom, for inspection

and verification.

5.9 Care required: All installations of measuring equipment applying

to or affecting the receipts and/or deliveries of gas shall be made in

such a manner as to permit an accurate determination of the quantity of

gas gathered, transported, and/or stored. Care shall be exercised by

Transporter in the installation, maintenance and operation of measuring

equipment so as to prevent inaccuracies in the determination of the

quantity of gas gathered, transported, and/or stored.

5.10 Calibration and test of meters: The accuracy of Transporter's

measuring equipment shall be verified by Transporter at reasonable

intervals, and if requested, in the presence of representatives of Point

Operator, but Transporter shall not be required to verify the accuracy

of such equipment more frequently than once in any ninety (90) day

period. In the event Point Operator notifies Transporter that it

desires a special test of any measuring equipment, Transporter and Point

Operator shall cooperate to secure a prompt verification of the accuracy

of such equipment. The expense of any such special test, if called for

by Point Operator, shall be borne by Point Operator if the measuring

equipment tested is found to be in error which affects quantity

measurement by not more than two (2) percent.

5.10.1 If, upon test, any measuring equipment is found to be in

error which affects quantity measurement by not more than two (2)

percent, previous recordings of such equipment shall be considered

accurate in computing volumes and/or quantities of gas, but such

equipment shall be adjusted at once to record accurately.

5.10.2 If, upon test, any measuring equipment is found to be in

error which affects quantity measurement exceeding two (2)

percent, any previous recordings of such equipment shall be

corrected to zero error for any period which is known definitely,

but in case the period is not known or agreed upon, such

correction shall be for a period extending for one-half of the

time elapsed since the date of the last test, but not more than 45

days.