Colorado Interstate Gas Company

First Revised Volume No. 1

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Effective Date: 06/01/2010, Docket: RP10-689-000, Status: Effective

Fifth Revised Sheet No. 241 Fifth Revised Sheet No. 241

Superseding: Fourth Revised Sheet No. 241




2. MEASUREMENT (continued)

(a) Atmospheric Pressure. For the purpose of measurement,

calculation and meter calibration, the average absolute

atmospheric (barometric) pressure shall be based on the actual

altitude of each point of measurement irrespective of

variations in natural atmospheric pressure from time to time.


(b) Temperature. The temperature of the Gas shall be determined at

the points of measurement by means of a properly installed

temperature transmitter of standard manufacture determined by

Transporter in exercise of its reasonable judgment to be

installed in accordance with the recommendations contained in

API 14.3 and 21.1 First Edition (Orifice Metering of Natural

Gas). In the event electronic computer measurement is used,

average daily temperature will be computed as a running average

of data determined during each computer scan.


(c) Determination of Heating Value and Specific Gravity. The gross

Heating Value and specific gravity of the Gas may be determined

by Gas chromatographic analysis or any other method mutually

agreed upon. This shall be done by either a Gas sample or by

an on-line Gas chromatograph. In the event a spot or

continuous Gas sampling device is used, intervals mutually

agreed upon should not be less than every Month. The

determination of gross Heating Value and specific gravity from

chromatograph shall input continuously into the computer for

quantity calculations. In the event a spot or continuous Gas

sampler is utilized, then the gross Heating Value and specific

gravity shall be determined in the laboratory by chromatograph

and will be used from the date of the analysis is downloaded

into the flow computer until the date the next sample is

analyzed and downloaded to the flow computer. All gross

Heating Value and specific gravity determinations made with a

chromatograph shall use physical Gas constants for Gas

compounds, as outlined in AGA 5 with any subsequent amendments

or revisions to which the parties may mutually agree.


(d) Compressibility. The measurement hereunder shall be

corrected for deviation from Boyle's law in accordance with AGA

Report No. 8, as amended from time to time.


2.6 Measurement Equipment. Unless otherwise agreed between Transporter

and Operator/Interconnecting Party, Transporter will install,

maintain, operate or cause to be installed, maintained and operated,

measuring stations equipped with flow meters and other necessary

metering and measuring equipment by which the volumes of Gas received

and delivered hereunder shall be determined. Subject to the terms of

the interconnect agreement at Transporter's sole