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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 'Y `Z 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 fAX(925)988-9673 <br /> �111� Analytical 119 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-0342 <br /> ettler-Ryan - Dublin Client Project ID Unocal SS#5886, Stockton Sampled Mar 1, 1999 <br /> 47 Sierra Court, Suite J Sample Descript Water, MW-71D Received Mar 2, 1999 <br /> [Dublin, CA 94568 Analysis Method EPA 8260 Analyzed Mar 15, 1999 <br /> Attention Deanna Harding Lab Number 903-0243 Reported Mar 24, 1999 <br /> OXYGENATED COMPOUNDS (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> Ng/L Fig/L <br /> Ethanol 500 N D <br /> t-Butanol 100 N D <br /> Methyl t-Butyl Ether (MTBE) 20 N D <br /> Di-Isopropyl Ether (DIPS) 20 N D <br /> Ethyl t-Butyl Ether (ETBE) 20 N D <br /> t-Amyl Methyl Ether (TAME) 20 N D <br /> Surrogates Control Limit % % Recovery <br /> Dibromofluoromethane 50 150 100 <br /> 1,2-Dichloroethane-d4 50 150 89 <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL, #1271 <br /> I <br /> I <br /> ITU-1-1aAne Fegley <br /> Project Manager <br /> 9030233 GET <14> <br />