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680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> Sequoia 404 N WISet Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Stoker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(9 16)921-0100 <br /> 455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Analytical '551 Industrial Road San Carlos CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> Gettler-Ryan- bubiln Client Protect ID Unocal SS#5098, Stockton Sampled ' Jun' 17, 1999- <br /> 6747 Sierra Court, Suite J Sample Descrlpt Water, MW-22D Received Jun 18, 1999 <br /> Dublin, CA 94568 Analysis Method EPA 8260 Analyzed Jun 28, 1999 <br /> Attention Deanna Harding Lab Number 906-1579 Reported Jun 30, 1999 <br /> OXYGENATED COMPOUNDS (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> Ng/L N9/L <br /> Ethanol 500 N D <br /> t-Butanol 100 N D <br /> Methyl t-Butyl Ether(MTBE) 20 N D <br /> Dl-isopropyl Ether (DIPE) 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 /> Dlbromofluoromethane 50 150 100 <br /> 1 2-D+chloroethane-d4 50 150 87 <br /> 4 <br /> 1 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL, #1271 <br /> anne Fegley J Z <br /> Project Manager <br /> 9061562 GET <9> <br />