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Sequoia 680 Chesapeake Drive Redwood dry CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wlget L ne walnut Geek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)92l-0100 <br /> Analytical 1455 McDowell Blvd.North,Ste.D Petaluma.CA 94954 (707)79Z-1865 FAX(707)792-0342 <br /> Gettler Ryan/Geostrategies Client Prol ID Former Unocal SS#2859 Sampled 12/04/98 <br /> 6747 Sierra Court Suite J Sample Descript MW-1 Received 12/04/98 a <br /> Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method EPA 8260 Analyzed 12/08/98 x <br /> Attenilon Deanna Harding _ Lab Number 9812431-02 Reported 12J18J98_� <br /> DC Batch Number M5120898MTSEF2A� - - _ - - -^- —_ ——- - ----- -- --j <br /> Instrument ID F2 <br /> Oxygenate Compounds (EPA 8260) <br /> Analyte Detection Lima Sample Results <br /> ug/L ug/L <br /> Ethanol 500 N D <br /> t-Butanol 100 N D <br /> Methyl t-Butyl Ether(MTBE) 20 N D <br /> Dl-Isopropyl Ether (DIPS) 2.0 N D <br /> Ethyl t-Butyl Ether(ETBE) 2.0 N D <br /> t-Amyl Methyl Ether (TAME) 2.0 N D <br /> Surrogates Control Limits % % Recovery <br /> 1,2-Dichloroethane-d4 76 114 95 <br /> Analytes reported as ere not present above the stated limit of detection <br /> SEQUO NAL ICAL - ELAP #1210 <br /> Tod G nic r <br /> Projec nagger Page: 2 <br />