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• ' IT <br /> • 680 Chesapeake Drive Redwood City CA 94063 (650)364 9600 FAX(650)364-9233 <br /> Sequoia 404 N Wiget lane Walnut Creek CA 94598 (92S)988 9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (9 16)9Z1-9600 FAX(916)921-0100 <br /> Vettier-Ryan <br /> Analytical 1451 Ind strial Blvd North Ste D Petaluma CA 94954 (650)792 ]865 FAX(707)232-0342 <br /> 551 Industrial Road Sart Carlos CA 94070 411 l (650)232 9600 FAX(6S0)232-9fi12 <br /> - Dublin Client Protect ID Tosco SS#6981, Stockton Sampled Apr 19-20, 1999 <br /> 6747 Sierra Court, Suite J Sample Descript Water, MW-6 Received Apr 21, 1999 <br /> Dublin, CA 94568 Analysis Method EPA 8260 Analyzed Apr 29, 1999 <br /> Attention Deanna Harding Lab Number 904-1859 Reported May 14, 1999 <br /> OXYGENATED COMPOUNDS (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> Mg/L N9/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 (DIPE) 20 N D <br /> Ethyl t-Butyl Ether (ETRE) 20 N D <br /> t-Amyl Methyl Ether (FAME) 20 N D <br /> Surrogates Control Limit % % Recovery <br /> Dlbromofluoromethane 50 150 82 <br /> 1,2-Dichloroethane-d4 50 150 97 <br /> l <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL, #1271 <br /> J Janne Fegley <br /> roject Manager <br /> 9041854 GET <8> <br />