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` Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 4(T) 404 N Wlget Lane Walnut Creek.CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX{916)921 0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> ler-Ryan - Dublin Client Prolect ID Unocal 88#0123, Traci Sampled VMar 16, 1999 <br /> 7 Sierra Court, Suite J Sample Descript Water, U-3 Received Mar 17, 1999 <br /> Dublin, CA 94568 Analysis Method EPA 5030/8010 Analyzed Mar 29, 1999 <br /> Attention Deanna Harding Lab Number 903-1669 ri A w nN Reported Apr 2, 1999 <br /> HALOGENATED VOLATILE ORGANICS (EPA 8010) <br /> Analyte Detection Limit Sample Results <br /> N9/L N9/L <br /> Bromodlchloromethane 050 N D <br /> Bromoform 050 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 /> Chloroform 050 N D <br /> Chloromethane 1 0 N D <br /> Dibromochloromethane 050 N D <br /> 1,3-Dichlorobenzene 050 N D <br /> 1,4-Dichlorobenzene 050 N D <br /> 1,2-Dichlorobenzene 050 N D <br /> 1 1-Dtchloroethane 050 N D <br /> 1,2-Dtchloroethane 050 N D <br /> 1 1-Dtchloroethene 050 N D <br /> qW1,2-Dtchloroethene 050 ND <br /> ns-1,2-Dtchloroethene 050 N D <br /> 1,2-Dlchloro propane 050 N D <br /> cls-1,3-Dlchloropropene 050 N D <br /> trans-1,3-Dlchloropropene 050 N D <br /> [Methylene chloride 5 0 - • - 15 <br /> 1,1,2,2- etrac oroet ane 050 ND <br /> ITetrachloroethene - • - - 050 - - 28 <br /> 1,1,1-I richlorciethane 050 <br /> 1,1,2-Trichloroethane 050 N D <br /> Trichloroethene 050 N D <br /> Trichlorofluoromethane 050 N D <br /> Vinyl chloride 10 N D <br /> Surrogates Control Limit % % Recovery <br /> Dibromodifluoromethane 50 150 101 <br /> 4-Bromofluorobenzene 50 150 96 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL, #1271 <br /> r <br /> ulianne Fegley <br /> Project Manager <br /> 9031666 GET <6> <br />