Rockies Express Pipeline LLC (Entrega)

Second Revised Volume No. 1

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Effective Date: 09/01/2007, Docket: CP06-354-002, Status: Effective

Original Sheet No. 228 Original Sheet No. 228 : Effective

GENERAL TERMS AND CONDITIONS

18. MEASUREMENT (Contd.)

18.4 TEMPERATURE

The temperature of the Gas shall be determined at the Points of

measurement by means of a properly installed recording thermometer

or continuous electronic transducer.

18.5 DETERMINATION OF GAS COMPOSITION, TOTAL HEATING VALUE AND SPECIFIC

GRAVITY

A. Total Heating Value shall be the number of Btus per cubic

foot of Gas at the base condition of 14.73 psia 60 degrees

Fahrenheit dry. The Btu value will be determined utilizing

the complete actual composition of the Gas according to the

methods in GPA Standard 2172-96, titled "Calculation of

Gross Heating Value, Relative Density and Compressibility

Factor for Natural Gas Mixtures from Compositional

Analysis," and corrected to the base conditions. For

reporting purposes, Btu conversion factors will be reported

to not less than three (3) decimal places and Pressure Base

conversion factors will be reported to not less than six (6)

decimal places. For calculation purposes, not less than six

(6) decimal places will be used for both conversion factors.