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40 <br /> Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N W1Set lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> G) 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 /> i v4 ri <br /> ~ v { <br /> Ottle'r- yan -Dublin n Client Project 1D ` Unocal SS#0123,Tiacy Y "r Sampled'` Dec 14, 1998 <br /> ' 6747 Sierra Court, Suite J Sample Descrlpt Water, U-4 Received Dec 15, 19984 <br /> Dublin, CA 94568 Analysis Method EPA 5030/8010 Analyzed Dec 22, 1998 <br /> ' Attention Deanna Harding Lab Number 812-1238 Reported Dec 31, 1998, <br /> HALOGENATED VOLATILE ORGANICS (EPA 8010) <br /> Analyte Detection Limit Sample Results <br /> N9/L Ng/L <br /> Bromodichloromethane 050 N D <br /> Bromoform 050 N D <br /> Bromomethane 10 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 10 N D <br /> Dlbromochloromethane 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-Dlchloroethane 050 N D <br /> 1,2-Dlchloroethane 050 N D <br /> ,MgL1-Dichloroethene 050 N D <br /> WS-11,2-mchloroethene 050 085 <br /> trans-1 2-Uichloroethene 050 <br /> 1,2-Dlchloropropane 050 N D <br /> cls-1,3-Dlchloropropene 050 N D <br /> trans-1,3-Dlchloropropene 050 N D <br /> Methylene chloride 50 N D <br /> 1,1,2,2-Tetrachloroethane 050 N D <br /> Tetra chi oro et erre . . 050 . . .. . 2.0 <br /> 1,1,1-jricnioroetnane 050 <br /> 1,1,2 Trichloroethane 050 N D <br /> ThChloroethene 050 057 <br /> nc oro uoromet ane —050 <br /> Vinyl chloride 10 N D <br /> Surrogates Control Limit % % Recovery <br /> Dibromodifluoromethane 50 150 84 <br /> 4-Bromofluoro benzene 50 150 73 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL, #1271 <br /> I�IianneF�egley <br /> Project Manager <br /> 8121234 GET t7> <br />