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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 Dave, Suite 140 Matrix Descrlpt Water Received Feb 5, 1992 <br /> West Sacramento, CA 95691 Analysis Method FPA 5030/8015/8020 Analyzed 2/14,2/18/92, <br /> Attention John Bower First Sample# 202-0131 Reported Feb 18, 1992 <br /> N ' <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 pg/L Fig/L N9/L yg/L <br /> (ppb) (ppb) (ppb) (ppb) (ppb) <br /> 202-0131 Mw5 66,000 7,000 810 690 1,400 <br /> 202-0132 Mwt1 130,000 8,500 10,000 2,100 5,900 <br /> 202-0133 mm 9,500 12,000 2,800 1,700 3,700 <br /> 202-0134 Mw4 160,000 17,000 5,400 2,100 4,400 <br /> Detection Limits 12,400 120 120 120 120 <br /> Low to Medium Boiling 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 limits for this sample have been raised <br /> EOUOIA ANALYTICAL <br /> L/W//4/ <br /> Michael R Giles <br /> Laboratory Director 2020125 GGG <4> <br />