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SEQUOIA ANALYTICAL <br /> 819 Striker Avenue, Suite 8 • Sacramento, CA 95834 <br /> (916) 921-9600 • FAX (916) 921-0100 <br /> Groundwater Technology Client Project ID Texaco, Charter Way, Stockton Sampled Feb 5, 1992 - <br /> 1401 Halyard Drive, Suite 140 Matrix Descript Water Received Feb 5, 1992, <br /> West Sacramento, CA 95691 Analysis Method EPA 5030/8015/8020 Analyzed 2/13-2/14/92 <br /> Attention John Bower First Sample# 202-0128 Reported Feb 18, 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 /> Ng/L Ng/L Fig/L Ng/L ug/L <br /> (ppb) (ppb) (ppb) (ppb) (ppb) <br /> 202-0128 MW7 24,000 1,100 60 430 780 <br /> 202-0129 MW3 80,000 1,900 3,100 1,200 5,300 <br /> Detection Limits 3,000 30 30 30 30 <br /> Low to Medium Boiling Point Hydrocarbons are quantitated against a gasoline standard <br /> Analytes reported as N D were not present above the stated limit of detection Because matrix effects and/or other factors <br /> required additional sample dilution,detection limits for this sample have been raised <br /> SEQUOIA ANALYTICAL <br /> Michael R Giles <br /> Laboratory Director 2020125 GGG <2> <br />