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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,440 West Charter Way,Stockton Sampled May 15, 1992 <br /> 1401 Halyard Drive, Suite 140 Matrix Descrlpt Water Received May 18, 1992 <br /> West Sacramento, CA 95691 Analysis Method EPA 5030/8015/8020 Analyzed 5/27-28/92 <br /> Attention John Bower First Sample # 205-0409 Reported Jun 2, 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 /> pg/L N9/L pg/L Ng/L Ng/L <br /> (ppb) (ppb) (ppb) (ppb) (ppb) <br /> 205-0409 Mw-10 7,100 2,000 N D 34 230 <br /> 205-0411 MW-7 9,400 1,200 46 230 570 <br /> 205-0414 MW-3 31,000 1,900 3,300 1,200 4,300 <br /> 205-0416 MW-1 f 42,000 8,000 8,400 1,600 4,900 <br /> Detection Limits 3,000 30 30 30 30 <br /> Low to Medium Boding 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 /> L <br /> Michael R Giles <br /> Laboratory Director <br /> 2050406 GRW <2> <br />