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a <br /> 0 ON <br /> x <br /> Page: 7 <br /> IT ANALYTICAL SERVICES <br /> Company: IT Corporation, Martinez SAW JOSE,CA <br /> Date: 05/14/90 <br /> Client Work ID: 148019 SP Stockton Work order: TO-04-284 <br /> TEST CODE 501 TEST NAME Ha2ocarboas by 8010/601 <br /> The method of analysis for volatile halocarbons is taken from <br /> E.P.A. Methods 601 and 8010. Samples are examined using the purge <br /> and trap technique. Final detection is by gas chromatography using <br /> an electrolytic conductivity detector. <br /> TEST CODE OH(i85t TEST NAME EPA 503E in Soil <br /> r ? <br /> The method of analysis for oil and grease in taken from Standard Methods <br /> for the Examination of Water and Wastewater, Section 503E. Samples are <br /> extracted with repeated portions of solvent and the extract is treated with <br /> silica gel to remove polar compounds. The extract is evaporated and oil and <br /> grease is determined gravimetrically, <br /> TEST CODE TPHN 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 /> I, <br /> TEST CODE TPBVB TEST NAME TPH Gaz,BT8Z by 8015/8020 <br /> The method of analysis for low boiling hydrocarbons is taken from <br /> EPA Methods 8015, 8020 and 5030. The sample is examined using the purge <br /> and trap technique. Final detection is by gas chromatography using a <br /> flame ionization detector as well as a photoionization detector. The result <br /> for total low boiling hydrocarbons is calculated as gasoline and includes <br /> benzene, toluene, ethylbenzene and xylenes. <br /> 9 <br /> 1 � <br />