Questar Southern Trails Pipeline Company

Original Volume No. 1

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Effective Date: 10/24/2003, Docket: RP03-612-000, Status: Effective

First Revised Sheet No. 73 First Revised Sheet No. 73 : Effective

Superseding: Original Sheet No. 73

GENERAL TERMS AND CONDITIONS

 

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 Turbin 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).

 

12.2 Use of Measurement. Unless otherwise agreed to by Southern

Trails, Southern Trails 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 Southern

Trails' specifications and in a manner that will not interfere with the

operations of Southern Trails. 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.