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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 404 N Wiget[.ane Walnut Creek.CA 94598 (925)988-9600 FAX(925)988-9673 <br /> (D— Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921 0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707) 792-1865 FAX(707)792-0342 <br /> Pacific <br /> AX(707)792-0342 <br /> Pacific Environmental GroupClient Project ID Tosco 5417 Manteca CA Sampled 24 1 <br /> j ped Aug 998 <br /> 11315 Sunrise Gold Circle, Ste M Sample Descnpt Water, Drum 1 Received Aug 25, 1998 <br /> Rancho Cordova, CA 95742 Analysis Method EPA 5030/8240 Analyzed Sep 11 1998 <br /> Attention Mike Mitchener Lab Number S808248 -01 Reported Sep 4, 1998 <br /> VOLATILE ORGANICS by GC/MS (EPA 8240) <br /> Analyte Reporting Limit Sample Results <br /> Ng/L 11g/L <br /> MTBE 20 N D <br /> Benzene 2 0 N D <br /> Bromodichloromethane 2 0 N D <br /> Bromoform 2 0 N D <br /> Bromomethane 2 0 N D <br /> 2-Butanone 10 N D <br /> Carbon disulftde 2 0 N D <br /> Carbon tetrachloride 2 0 N D <br /> Chlorobenzene 2 0 N D <br /> Chloroethane 2 0 N D <br /> Chloroform 2 0 N D <br /> Chloromethane 2 0 N D <br /> Dibromochloromethane 2 0 N D <br /> 1,1-Dichloroethane 2 0 N D <br /> I*,2-Dichloroethane 2 0 N D <br /> 1,1-Dichloroethene 20 N D <br /> cls-1,2-Dichloroethene 20 N D <br /> trans-1,2-Dichloroethene 2 0 N D <br /> 1,2-Dichloropropane 2 0 N D <br /> cis-1,3-Dichloropropene 2 0 N D <br /> trans-1,3-Dichloropropene 2 0 N D <br /> Ethylbenzene . . . . . . . . . . . ... 2.0 .. . . 2 9 <br /> 2-Hexanone 10 N D <br /> Methylene chloride 5 0 N D <br /> 4-Methyl-2-pentanone 10 N D <br /> Styrene 2 0 N D <br /> 1,1,2,2-Tetrachloroethane 2 0 N D <br /> Tetrachloroethene 2 0 N D <br /> Toluene 2 0 N D <br /> 1,1,1-Trichloroethane 2 0 N D <br /> 1,1,2-Trichloroethane 2 0 N D <br /> Trichloroethene 2 0 N D <br /> Trichlorofluoromethane 2 0 N D <br /> Vinyl acetate 5 0 N D <br /> Vinyl chloride 2 0 N D <br /> Total Xylenes ... .. . ... .. .. .. .. .. . 2.0 . .. . .. .. .. .. . 23 <br /> Analytes reported as N D were not detected at or above the reporting limit <br /> SEQUOIA ANALYTICAL, EPA#1271 Surrogate Recovery Limits Percent Recovery <br /> r <br /> 1,2-Dichloroethane-D4 50-150°0!0 90 <br /> (G Toluene-D8 50-150% 98 <br />/ lnda C Schneider 4-Bromofluorobenzene 50-150° 93 <br /> Project Manager/Sacramento Laboratory <br /> S808248 PES <5> <br />