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i <br /> 680 Chesapeake Drive Redwood City CA 94063 (650)361-9600 FAX(650)3(A-9233 <br /> ` Sequoia 404 N Wiget Lane Walnut Geek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 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 /> Analytical <br /> 1551 Industrial Road San Carlos CA 94070-4111 {650)232-9600 FAX(650)232-9612 . <br /> Gettler-Ryan - Dublin Client Project ID Tosco SS#6981, Stockton Sampled Apr 19-20, 1999 <br /> 6747 Sierra Court, Suite J Sample Descrlpt Water, MW-5 Received Apr 21, 1999 <br /> Dublin, CA 94568 Analysis Method EPA 8260 Analyzed Apr 29, 1999 <br /> Attention Deanna Harding __ -Lab Number _ _ _904-1858= _ _ _ _--Reported TMay-14, 1999 - <br /> OXYGENATED COMPOUNDS (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> Ng/L lig/L <br /> Ethanol 500 <br /> N D <br /> t-Butanol <br /> 100 N D <br /> Methyl t- uty ter 20 22 <br /> Di-Isopropyl ter 0 ND <br /> Ethyl t-Butyl Ether (ETBE) 20 N D <br /> t-Amyl Methyl Ether (TAME) 20 N D <br /> Surrogates Control Limit % % Recovery <br /> Dlbromoftuoromethane 50 150 85 <br /> 1,2-Dichloroethane-d4 50 150 104 <br /> • <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL, #1271 <br /> PK.11 <br /> � <br /> J llanne Fegley <br /> roJect Manager <br /> 9041854 GET <7> <br />