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01 7u1Y 2008 <br /> AGE-NC Project No. 97-0301 <br /> Page 8 of 8 <br /> conversion chart. Flow rates will be measured in 30 minute intervals and documented in scfin and <br /> inches of water of differential pressure. <br /> Influent vapor samples (air flow samples) will be collected at the start-up and at two-hour intervals <br /> thereafter from the inlet of the extraction well to measure concentrations of extracted hydrocarbon <br /> vapor. The samples will be collected in Tedlar bags using a hand air-vacuum pump. Following <br /> sample collection, the samples will be placed in a covered container and transported under chain of <br /> custody to a CDPH-certified analytical laboratory for analysis. Each sample will be analyzed within <br /> i72 ho s for TPH-g. BTEX and fuel additives (MTBE, 1 ,2-DCA) in accordance with EPA Methods <br /> M and 8260. <br /> If applicable, soil vapor field parameters and analytical results will facilitate the design of an SVE <br /> system and vapor flow data will be used to determine a general radius of influence for spacing of <br /> additional SVE wells, if warranted, and the selection of an appropriate SVE system. <br /> Advanced GeoEnviromnental, Inc. <br />