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Gas Quality Sampling Procedures
· Discovery Gas Transmission LLC procedure is that sampling used in posting gross heating value is performed in accordance with GPA-2166 (latest revision). Gross heating value calculations are performed per GPA-2172 (latest revision).
· Discovery Gas Transmission LLC procedure is that gas analysis used in posting for Nitrogen, Carbon Dioxide and Hydrocarbon Compounds be performed using gas chromatography analysis in accordance with GPA-2261(latest revision). Physical constants used in the calculations are from GPA-2145 (latest revision) with the following 60/30/10% split for C6/C7/C8+, respectively.
· Discovery Gas Transmission LLC procedure is that gas analysis used in posting for H2S compounds be performed using laser absorption spectrometer, lead acetate tape, or other analytical devices and techniques that meet the requirements of ASTM D 5504 (latest revision).
· Discovery Gas Transmission LLC procedure is that gas analysis used in posting for water vapor content be performed using analysis techniques and methods that meet ASTM D 5454 (latest revision).