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SEQUOIA ANALYTICAL <br /> 819 Striker Avenue, Suite 8 o Sacramento CA 95834 <br /> (916) 921 9600 o FAX (916) 921 0100 <br /> Alton Geoscience Client Project ID #42-0014, Cal Trans Sampled 3/30-31/92 <br /> 3035 Prospect Park Dr , Suite 80 Matrix Descrlpt Soil Received Apr 1, 1992 <br /> Rancho Cordova, CA 95670 Analysis Method EPA 5030/8015/8020 Analyzed 4/1,6/92 <br /> Attention Matthew Taylor First Sample # 204-0020 Reported Apr 8, 1992 <br /> TOTAL PETROLEUM FUEL HYDROCARBONS with BTEX DISTINCTION (EPA 8015/8020) <br /> Sample Sample Low/Medium B P Ethyl <br /> Number Description Hydrocarbons Benzene Toluene Benzene Xylenes � <br /> mg/kg mg/kg mg/kg mg/kg mg/kg <br /> (ppm) (Ppm) (Ppm) (Ppm) (ppm) <br /> 204-0020 Mw 12 71 71 5 N D 00098 N D N D N D <br /> Detection Limits 1 0 0 0050 00050 00050 00050 <br /> Low to Medium Belling Point Hydrocarbons are quantitated against a gasoline standara <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL <br /> Michael R Giles <br /> Laboratory Director <br /> 2040009 ALFi <2> <br />