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" Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650) 364-9233 <br /> 404 N ",let lane Walnut Creek.CA 94598 <br /> $ (925}988-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)9Z1-9600 FAX(916)9Zl-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-034Z <br /> Obettler-Ryan - Dublin Client Project ID Unocal 88#5886, Stockton Sampled Mar 1, 1999 <br /> 6747 Sierra Court, Suite J Sample Descript Water, MW-2 Received Mar 2 1999 <br /> Dublin, CA 94568 Analysis Method EPA 8260 Analyzed Mar 15, 1999 <br /> Attention Deanna Harding Lab Number 903-0235 Reported Mar 24, 1999 <br /> OXYGENATED COMPOUNDS (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> 119/L lig/L <br /> Ethanol <br /> 25,000 N D <br /> t-Butanol 5 000 N D <br /> Methylt-Butyl ter 100 <br /> I-sopropy ter 100 <br /> Ethyl t-Butyl Ether (ETSE) 100 N D <br /> t-Amyl Methyl Ether (TAME) 100 N D <br /> Surrogates Control Limit% % Recovery <br /> Dibromofluoromethane 50 150 92 <br /> 1 2-Dichloroethane-d4 50 150 79 <br /> 0 <br /> Analytes reported as N 0 were not present above the stated limit of detection Because matrix effects and/or other factors <br /> required additional sample dilution,detection limits for this sample have been raised <br /> SEQUOIA ANALYTICAL, #1271 <br /> 0 -�'A* <br /> J anne Fegley <br /> roject Manager <br /> 9030233 GET c6> <br />