Arkansas Western Pipeline Company

First Revised Volume No. 1

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Effective Date: 06/01/1997, Docket: RP97-187-003, Status: Effective

Original Sheet No. 11A Original Sheet No. 11A : Superseded

4.1 The natural gas delivered at the Point(s) of Receipt and the

Point(s) of Delivery under an executed Service Agreement shall

contain a heating value of not less than 975 Btu per cubic

foot. The heating value shall be determined by Transporter by

the installation of a recording calorimeter, a continuous

sample accumulator, an on-stream chromatograph, or by means of

spot samples; provided, however, that in lieu of a recording

calorimeter, Transporter may determine the heat content on the

basis of samples taken at periodic intervals. If periodic

determinations of heating value are made, the initial

determination is to be made within sixty (60) days after the

date of initial deliveries of natural gas under an executed

Service Agreement and subsequent determinations shall be made

each three (3) months thereafter. The recording calorimeter

mentioned herein shall be tested periodically using a reference

sample of natural gas of known heating value.

4.2 The natural gas received and delivered under an executed

Service Agreement: