Questar Overthrust Pipeline Company

Second Revised Volume No. 1-A

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

Original Sheet No. 77 Original Sheet No. 77 : Effective

GENERAL TERMS AND CONDITIONS

American Gas Association, Compressibility Factors of Natural Gas and Other

Related Hydrocarbon Gases, Transmission Measurement Committee Report No. 8

(AGA Report No. 8).

American Gas Association, Measurement of Gas by Multipath Ultrasonic Meters,

Transmission Measurement Committee Report No. 9 (AGA Report No. 9).

American Gas Association, Measurement of Gas by Turbine Meters, Transmission

Measurement Committee Report No. 7 (AGA Report No. 7).

American Petroleum Institute, Manual of Petroleum Measurement Standards

Chapter 14, Natural Gas Fluids Measurement, Section 1, Collecting and Handling

of Natural Gas Samples for Custody Transfer (API Chapter 14.1).

American Petroleum Institute, Manual of Petroleum Measurement Standards

Chapter 14, Natural Gas Fluids Measurement, Section 3, Orifice Metering of

Natural Gas and Other Related Hydrocarbon Fluids, API Standard 2530 (API

Chapter 14.3).

American Petroleum Institute, Manual of Petroleum Measurement Standards

Chapter 21, Flow Measurement Using Electronic Metering Systems, Section 1,

Electronic Gas Measurement (API Chapter 21.1).

Gas Processors Association Standard 2145-03, Table of Physical Constants for

Hydrocarbons and Other Compounds of Interest to the Natural Gas Industry (GPA

Standard 2145-03).

Gas Processors Association Standard 2172-96, Calculation of Gross Heating

Value, Relative Density and Compressibility Factor for Natural Gas Mixtures

from Compositional Analysis (GPA Standard 2172-96).

Gas Processors Association Standard 2261-00, Analysis for Natural Gas and

Similar Gaseous Mixtures by Gas Chromatography (GPA Standard 2261-00).

13.2 Use of Measurement. Unless otherwise agreed to by Overthrust,

Overthrust will install, maintain and operate all measurement stations, which

shall be equipped with electronic flow computers or conventional chart

recorders and other measurement equipment. The interconnecting operator may

install check measurement equipment at its own cost and expense if the

equipment is installed in accordance with Overthrust's specifications and in a

manner that will not interfere with the operations of Overthrust. Gas volumes

determined according to this section will be used for billing, balancing, and

calculation of fuel use and lost and unaccounted-for gas, etc.