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Page: 8 <br />IT ANALYTICAL SERVICES <br />Company: IT Corporation, Martinez SAN JOSE, CA <br />Date: 07/19/90 <br />Client Work ID: 142089 Pacific Bell Work order: TO -06-261 <br />TEST CODE BTEX TEST NAME BTEX by 8020/602 <br />The method of analysis for volatile aromatics is taken from E.P.A. <br />Methods 602 and 8020. Samples are examined using the purge and trap technique. <br />Final detection is by gas chromatography using a photoionization detector. <br />TEST CODE TPH11 TEST NAME TPH High Boiling by 8015 <br />The method of analysis for high boiling hydrocarbons involves extracting <br />the samples with solvent and examining the extracts by gas chromatography <br />using a flame ionization detector. <br />682-1-89 <br />