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• 680 Chesapeake Drive Redwood City CA 94063 (650)364 9600 FAX(650)364-4233 <br /> Sequoia W4 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9573 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> eettler-Plyan <br /> Analytical 1455 McDowell 8a d North Ste D Petaluma CA 94954 (650)232-1865 FAX(650)792-0342 <br /> 1551 industrial Road San Carlos CA 94070-4i 11 (6S0)232-9600 FAX(650)232-9612 <br /> -Dublin Client Project ID Tosca SS#6981, Stockton Sampled Apr 19-20, 1999 <br /> 6747 Sierra Court, Suite J Sample Descnpt Water, VW-3 Received Apr 21, 1999 <br /> Dublin, CA 94568 Analysis Method EPA 8260 Analyzed Apr 29, 1999 <br /> Attention Deanna Harding Lab Number 9041866 Reported May 14, 1999 <br /> OXYGENATED COMPOUNDS (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> Ng/L Jig/L <br /> Ethanol 5,000 N D <br /> t-Butanol 1,000 N D <br /> [Methylf-Butyl Ether 20 890 <br /> I- sopropy ter 2 <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 87 <br /> k 1,2-Dichloroethane-d4 50 150 102 <br /> 0 <br /> Analytes reported as N D 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 /> troj.ectnne Fegley <br /> Manager <br /> 9041854 GET <15> <br /> r� <br />