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SEQUOIA ANALYTICAL <br /> 819 Striker Avenue, Suite 8 • Sacramento, CA 95834 <br /> (916) 921-9600 • FAX (916) 921-0100 <br /> i <br /> Groundwater Technology Client Project ID Texaco,440 west Charter way,Stockton Sampled May 15, 1992 <br /> 1401 Halyard Drive, Suite 140 Matrix Descript 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# 205-0412 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 /> ug/L Ng/L pg/L pg/L dig/L <br /> (ppb) (ppb) (ppb) (ppb) (ppb) <br /> 205-0412 MW-5 28,000 6,900 900 690 1,500 <br /> 205-0415 Mw-9 27,000 9,500 2,900 1,200 3,900 <br /> 205-0417 MW-4 81,000 18,000 6,600 2,000 4,400 <br /> Detection Limits 12,000 120 120 120 120 <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 /> L� <br /> Michael R Giles <br /> Laboratory Director <br /> 2050406 GRW <4> <br />