Questar Overthrust Pipeline Company

Second Revised Volume No. 1-A

Effective Date: 04/25/2007, Docket: RP07-360-000, Status: Effective

Original Sheet No. 80 Original Sheet No. 80 : Effective

GENERAL TERMS AND CONDITIONS

and gas volumes computed according to the standards prescribed in AGA Report

No. 9.

(d) Square Root Error. If unacceptable square root error or

gauge line error is caused by an interconnecting company's equipment or by a

shipper on the interconnecting company pipeline, Overthrust will refuse to

accept gas from the interconnecting pipeline at that location until the

problem is corrected. Unacceptable square root error is defined to be equal

to or greater than 0.5%. If there is a disagreement over the degree of error

between Overthrust and the operator of the source, a mutually agreeable

independent third-party will be requested to determine the source and degree

of error. The party deemed responsible for the pulsation source will incur

all costs for the consultation and the installation of remedial devises or

filtering equipment, as necessary.

(e) New Standards. Overthrust may adopt the most recent edition

of: API Chapter 14.3; AGA Report No. 3, Part 2; AGA Report No. 7; and AGA

Report No. 9.

13.9 New Measurement Techniques. If a new method or technique is

developed for gas measurement, the new method or technique may be substituted

by Overthrust. Overthrust will promptly inform all Shippers of any new

techniques adopted.

13.10 Rights Concerning Measurement Equipment.

(a) Overthrust and the operator of any interconnecting

facility, in the presence of each other or their contractually designated

representative, may have access to the other's measurement equipment at all

reasonable times for installing, reading, cleaning, changing, repairing,

inspecting, testing, calibrating or adjusting done in connection with the

other's measurement equipment. Only the party owning the equipment may

perform these operations, unless otherwise agreed. The failure of either

party to witness such operations will not affect the validity of the

operations.

(b) The records from measurement equipment will remain the

property of the party owning the equipment, but within ten days of a request,

each will permit the other party to inspect its records and data, together

with related calculations.

interconnecting facility will be for check purposes only and, except as

expressly provided in these General Terms and Conditions, will not be used in

the custody measurement of gas.