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SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue • Suite LM • Concord,California 94520 NOY 0 z 1992 <br /> (510) 686.9600 0 FAX (510) 686-9689 <br /> Anon Geosclence Client Project iD: Mobq #rU4-043/30-0136-10 mpled: Oct 21, 1992 <br /> 5870 Stoneridge Drive, Suite 6 Sample Matrb(: Water Received: Oct 22, 1992 . <br /> Pleasanton, CA 94588 Analysis Method: EPA 5030/8015/8020 Reported: Oct 28, 1992 <br /> Attention: Stephan Rosen First Sample#: 210-0728 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample <br /> Analyte Llmlt I.D. I.D. I.D. <br /> Ng/L 210-0728 210-0729 210-0730 <br /> AW-9 AW-8 AW-3 <br /> Purgeable <br /> Hydrocarbons 50 N.D. N.D. 65 <br /> Benzene 0.5 1.2 N.D. N.D_ <br /> Toluene 0.5 N.D. N.D. N.D. <br /> Ethyl Benzene 0.5 N.D. N.D. N.D. <br /> Total Xylenes 0.5 N.D. N.D. N.D. <br /> i <br /> Chromatogram Pattem: -- Non Gasoline <br /> Mucture <br /> (>Cg) <br /> Quality Control Data <br /> Report Limit Multiplication Factor: 1.0 1.0 1.0 <br /> Date Analyzed: 10/23/92 10/23/92 10/27/92 <br /> Instrument Identification: HP-2 HP-2 HP-4 <br /> Surrogate Recovery,%: 99 99 98 <br /> (OC Limits = 70-130%) <br /> Purgeable Hydrocarbons are quantitated against a trash gasoline standard. <br /> Analytes teported as N.D.were not detected above the stated reporting limit. <br /> SEQUOIA ANALYTICAL <br /> ott <br /> h o , <br /> 2400rnut -c2>Project Manager <br />