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SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue • Suite LM e Concord, California 94520 <br /> (510) 686-9600 • FAX (510) 686-9689 <br /> ORM-West (Walnut Creek) Client project ID #1572 01, Stockton Sampled ` `V Jun 3, 1992 <br /> 1777 Botelho Dr, Suite 260 Matruc Descript Water Received Jun 3, 1992 <br /> Walnut Creek, CA 94596 Analysis Method EPA 5030/8015/8020 Analyzed Jun 4, 1992 <br /> Attention Bruce Pfaff First Sample# 206-0092 Reported Jun 19, 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 Mg/L Ng/L pg/L <br /> (ppb) (ppb) (ppb) (ppb) (ppb) <br /> 206-0092 MW-1 N D N D N D N D N D <br /> 206-0093 MW-2 N D N D N D N D N D <br /> 206-0094 MW-3 N D N D N D N D N D <br /> 206-0095 MW-4 150 0 42 - 069 N D 072 <br />. 206-0099 MW-3A N D N D N D N D N D <br /> 206-0100 MW-4A N D N D N D N D N D <br /> 206-0101 Trip Blank N D N D N D N D N D <br /> 206-0102 Field Blank N D 063 50 11 53 <br /> Detection Limits 30 030 0.30 030 030 <br /> Low to Medium Boiling Point Hydrocarbons are quantitated against a gasoline standard M <br /> Analytes reported as N D were not present above the stated limit of detection 11 y <br /> SEQUOIA ANALYTICAL SUN 2 41992 <br /> ER�-WEST FILE# <br /> o WALNUT CREEK.CA — � <br /> 2060092 ERM <1� <br /> jcpoAChieff <br /> rojecManager <br />