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SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue • Suite LM • Concord, California 94520 <br /> (510) 686-9600 FAX (510) 686-9689 <br /> Mon ib Ctlent Project 1D: Mobil #03-343%30-0136-01 Sampled: Apr 7, 1992 <br /> 5870 Stoneridge Drive, Suite 6 Matrix Descript: Water Received: Apr 8, 1992 <br /> Pleasanton,CA 94588 Analysis Method: EPA 5030/8015/8020 Analyzed: Apr B, 1992 <br /> Attention: Stephan Rosen First Sample #: 204-0232 Reported: Apr 9, 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 pg/L Fig/L pg/L N9/L <br /> (Ppb) (Ppb) (ppb) (ppb) (ppb) <br /> 244-0232 AW-3 N.D. N.D. N.D. N.D. N.D. <br /> 204-0238 AW-9 72 15 N.D. 5.1 1.3 <br /> Detection Umlts: 30 0.30 0.30 0.30 0.30 <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. <br /> SEQUOIA ANALYTICAL <br /> tt A. Chieffo <br /> Project Manager <br /> 2040232.ALT <I> <br />