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SEQUOIA ANALYTICAL <br /> 819 Striker Avenue Suite 8 • 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 Sol[ 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 # 204-0009 Reported Apr 8, 1992 <br /> TOTAL PET ROLEUM 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/k9 mg/kg mg/kg mg/kg <br /> (ppm) (ppm) (ppm) (ppm) (ppm) <br /> 204-0009 MW 10 21 21 5 N D N D N D N D N D <br /> 201 0011 MW 10 56 56 5 40 081 062 0 055 032 <br /> 201-0012 MW 10 71 71 5 ND ND ND ND ND <br /> 201-0013 MW 11 16 15 5 ND ND ND ND ND <br /> 201-0014 MW 11 31 31 5 ND ND ND ND ND <br /> 201-0015 MW 11 56 56 5 ND ND ND ND ND <br /> 201-0016 MW 11 66 66 5 N D N D N D N D N D <br /> 201-0017 MW 12 16 16 5 ND ND ND ND ND <br /> i <br /> 201-0018 MW 12 36 36 5 N D N D N D N D N D <br /> 201-0019 MW 12 56 56 5 N D N D N D N D N D <br /> Detection Limits 1 0 0 0050 0 0050 0 0050 0 0050 <br /> Low to Medium soiling Point Hydrocarbons are quantitated against a gasoline standard <br /> Analytes reported as N 0 were not present above the stated limit at detection <br /> SEQUOIA ANALYTICAL <br /> L.1 <br /> Michael R Giles <br /> Laboratory Director <br /> 2040009 ALF; <1> <br />