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SEQUOIA ANALYTICAL 11Ay <br /> 1900 Bates Avenue • Suae LM • Concord, California 94520 T <br /> (510) 686-9600 FAX (510) 686-9689 <br /> t Y t. <br /> Anon Geoscience Client Project ID: Mobil #04,343/30-0136-01 Sampled. Apr 24, 1992 <br /> 5870 Stoneridge Drive, Suite 6 Matrbc Descript: Water Received: Apr 27, 1992 Y. <br /> Pleasanton, CA 94588 Analysis Method: EPA 5030/8015/8020 Analyzed: 4/28-4/29/92;, <br /> Attention: Stephan Rosen First Sample : 204-1094Reported: May 4, 19W <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 Ng/L N9/L Y9/L Ng/L <br /> (ppb) (ppb) (ppb) (ppb) (ppb) <br /> 204-1094 AW-2 N.D. N.D. N.D. N.D. N.D. <br /> 204-1095 AW-4 N.D. N.D. N.D. N.D. N.D. <br /> 204-1096 AW-8 N.D. N.D. N.D. N.D. N.D. <br /> 204-ID97 AW-6 N.D. N.D. N.D. N.D. N.D. <br /> 204-1098 AW-7 N.D. N.D. N.D. N.D. N.D. <br /> 204-1099 AW-5 N.D. N.D. N.D. N.D. N.D. <br /> 204-1100 AW-1 N.D. N.D. N.D. N.D. N.D. <br /> 204-1101 AW-* 124 N.D. N.D. N.D. N.D. <br /> 204-1102 AW-9 N.D. 5.5 0.35 1.2 0.39 <br /> Detection Limits: 30 0.30 0.30 0.30 0.30 <br /> Low to Medium Boiling Point Hydrocarbons are quantitated against a gasorine standard. <br /> Analytes reported as N.O.were not present above the stated limit of detection. <br /> •SEQUOIA ANALYTICAL ease above sample oes not appear to contain gasoline. LMBP%arocarbons <br /> are caused by high B.P.fust. <br /> Scott A C�Ie110 <br /> Project Manager ZZ 1 <br />