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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 404 N Wlget Larne Walnut Creek.CA 94598 (925)988-9600 FAX(9Z5)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 /> zZ <br /> Gettler Ryan[Geostrategies _ — Client Prol ID Unocal SS#5417, 180179 85 -Sampled 11/23/98µ�µ <br /> 6747 Sierra Court Suite J Sample Descnpt MW-2 Received 11/23/98 ' <br /> Dublin, CA 94568 Matrix LIQUID - <br /> Analysis Method EPA 8260 Analyzed 11/30/98 "= <br /> Attention Deanna Harding _ _ Lab Number 9811A00-03 - _ _ _Reported 12j17j98 <br /> X Batch Number M8113098MTSEH6A <br /> nstrument ID H6 <br /> Oxygenate Compounds (EPA 8260) <br /> Analyte Detection Limit 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 /> Dc-Isopropyl Ether (DIPE) 20 N D <br /> Ethyl t-Butyl Ether (ETRE) 20 N D <br /> t-Amyl Methyl Ether (TAME) 20 N D <br /> Surrogates Control Limits % % Recovery <br /> 1,2-Dlchloroethane-d4 76 114 103 <br /> 0 <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 41210 <br /> a her <br /> ect Manager Page 4 <br /> .max <br />