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SEQUOIA ANALYTICAL <br /> 819 Striker Avenue, Suite 8 • Sacramento, CA 95834 <br /> (916) 921 9600 • FAX (916) 921 0100 <br /> Alton Geoscience Client Project ID #42-0012-00, Cal Trans Sampled Apr 6, 1992 <br /> 3035 Prospect Pa~k Dr , Suite 80 Sample Descript Water, MW-1 Received Apr 7, 1992 <br /> Rancho Cordova CA 95670 Analysis Method FPA 5030/ 8015/8020 Analyzed Apr 14, 1992 <br /> Attention MatthGN Taylor Lab Numoer 204-0131 Reported Apr 14, 1992 <br /> TOTAL PETROLEUM FUEL HYDROCARBONS WITH BTEX DISTINCTION (EPA 8015/8020) <br /> Analyte Detection Limit Sample Results <br /> Ng/L (ppb) Ng/L (ppb) <br /> Low to Medium Boiling Point Hydrocarbons 3,000 4,900, <br /> Benzene. 30 1,100 <br /> Toluene 30 360 <br /> Eihvl Benzene 30 N D <br /> X lenes 30 400 <br /> Low to Medium Baling Point Hydrocarbons are quantitated against a gasoline standard <br /> Analytes reported as N 0 were not present above the stated limit of detection Because matrix effects and/or other factors <br /> required additional sample dilution detection limas for this sample have been raised <br /> SEQUOIA ANAL"TICAL .. <br /> Michael R Glles <br /> Laboratory (Director <br /> 2040131 ALFt a 1> <br />