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45) Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 5900 Bates Avenue Suite L Concord,CA 94520 (510) 686 9600 FAX(510)686 9689 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> l0roundwater Technology Client Project I0 Chevron #9-1918, Stockton, CA Sampled Jun 1, 1985, <br /> 1401 Halyard Drive, Suite 140 Sample Matrix Sod Received Jun 2, 1995 <br /> West Sacramento, CA 95691 Analysis Method EPA 5030/8015/8020 Reported Jun 6, 1995, <br /> Attention Jason Fedota First Sample# 506-0134 > <br /> .i i v {}h n r r i . n } j♦ v n } x } vn n? • ♦ v rt v <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit I.D I.D ID I.D ID ID <br /> mg/kg 506-0134 506-0135 506-0136 506-0137 506-0140 506-0141 <br /> SB11-36 0 SB11-41 0 SB11-46 0 SB11-51 0 SB13-15 0 SB13-20 0 <br /> Purgeable <br /> Hydrocarbons 10 N D N D 11 N D 1,600 2,700 <br /> Benzene 00050 N D N D N D N D N D N D <br /> Toluene 00050 ND ND ND ND ND ND <br /> Ethyl Benzene 00050 N D N D N D N D N D N D <br /> *Total Xylenes 00050 N D N D N D N D N D N D <br /> Chromatogram Pattern Weathered - weathered Weathered <br /> Gasoline Gasoline Gasoline <br /> C6-C12 C6-C12 06-C12 <br /> Quality Control Data <br /> Report Limit Multiplication Factor 10 1 0 1 0 10 100 100 <br /> Date Analyzed 6/2/95 6/5/95 6/2/95 6/2/95 6/5/95 6/2/95 <br /> Instrument Identification GCHP-2 GCHP-2 GCHP-2 GCHP-2 GCHP-1 GCHP-1 <br /> Surrogate Recovery, % 92 91 91 89 85 70 <br /> (QC Limits = 70-130%) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N D were not detected at or above the reporting limit <br /> SEQUOIA ANALYTICAL, FLAP #1624 <br /> kyr / <br /> j Linda C Schneider <br /> Project Manager <br /> 5060120 GRW <3> <br />