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• 1 <br /> Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 1 404 N Wigo Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(936)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-034Z <br /> Gettler Ryan/Geostrategies r Client Prol ID Unocal SS#0123 -- - " Sampled 09/28/98 <br /> 6747 Sierra Court Suite J Sample Descript U-3 Received 09/28/98 <br /> Dublin, CA 944568 Matrix LIQUID = <br /> Analysis Method EPA 8010 Analyzed 10/07/98 <br /> 'Attention Deanna Harding - Lab Number- 9809H50-04 _ Reported 11110198 = <br /> QC Batch Number GC1006980VOA32A <br /> Instrument ID GCHP32 <br /> Halogenated Volatile Organics (EPA 8010) <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/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 10 N D <br /> Chloroform 050 N D <br /> Chloromethane 10 N D <br /> Dibromochloromethane 050 N D <br /> 1,2-Dichlorobenzene 0 50 N D <br /> 1,3-Dichlorobenzene 050 N D <br /> 1,4-Dichlorobenzene 050 N D <br /> 1 1-D tchloroethane 050 N D <br /> Dichloroethane 050 N D <br /> -Dichloroethene 0 50 N D <br /> cis-1,2-Dlchloroethene 050 N D <br /> trans-1,2-Dlchloroethene 050 N D <br /> 1,2-Dichloropro pane 050 N D <br /> cis-1,3-Dichloropropene 050 N D <br /> trans-l,3-Dichloropropene 050 N D <br /> Methylene chloride 5 0 N D <br /> 1,1,2,2-Tetrachloroethane 050 N D <br /> Tetra chloro ethene 050 30 <br /> 1,1,1-Trichloroethane 050 N D <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 Limits % % Recovery <br /> 4-Bromofluorobenzene 70 130 91 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> PGranicher <br /> rollect Manager Page 13 <br />