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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 = _ <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> 'Wr,!D— Analytiea1 819 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> &PD$ Services Client Project ID Tosco#0123, 1034 Central Ave Tracy Sampled Jun 4, 1997 <br /> 2401 Stanwell Dr, Ste 300 Sample Descript Water, U 3 Received Jun 4, 1997 <br /> Concord, CA 94520 Analysis Method EPA 5030/8010 Analyzed Jun 17, 1997 <br /> Attention Jarrel Crider Lab Number 706-0360 Reported Jun 20, 1997 <br /> HALOGENATED VOLATILE ORGANICS (EPA 8010) <br /> Analyte Detection Limit Sample Results <br /> Ng/L Ng/L <br /> Bromod i chlo ro methane 050 N D <br /> Bromoform 1 0 N D <br /> Bromomethane 1 0 N D <br /> Carbon tetrachloride 050 N D <br /> Chlorobenzene 050 N D <br /> Chloroethane 1 0 N D <br /> 2-Chloroethylvinyl ether 10 N D <br /> Chloroform 050 N D <br /> Chloromethane 10 N D <br /> Dibromochloromethane 050 N D <br /> 1,2-Dichlorobenzene 050 N D <br /> 1,3-Dichlorobenzene 050 N D <br /> 1,4-Dichlorobenzene 050 N D <br /> 1,1-Diehl oroethane 050 N D <br /> 1 2-Dlchloroethane 050 N D <br /> 01 1-Dichloroethene 050 N D <br /> cls-1,2-Dichloroethene 050 N D <br /> trans-1,2-Dichloroethene 050 N D <br /> 1,2-Dichloropropane 050 N D <br /> cls-1,3-Dichloropropene 1 0 N D <br /> trans-1,3-Dtchloropropene 1 0 N D <br /> Methylene chloride 20 N D <br /> 1,1,2,2-Tetrachloroethane 050 N D <br /> Tetra c oroe ene 050 31 <br /> 11,11- ric oroet ane 050 <br /> 1,1,2-Trichloroethane 050 N D <br /> Trichloroethene 050 N D <br /> Trichlorofluoromethane 1 0 N D <br /> 1,1,2-Trichloro-1,2,2-trifluoroethane 050 N D <br /> Vinyl chloride 1 0 N D <br /> Surrogates Control Limit% % Recovery <br /> Dibromodlfluoromethane 50 150 56 <br /> 4-Bromofluorobenzene 50 150 81 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL, #1271 <br /> *ignature on File <br /> Alan B Kemp <br /> Project Manager <br /> 7060358 MPD <7> <br />