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Sequoia 680 Chesapeake Drive Redwood City Ca 94063 (654)364-9600 FAX(650)364-9233 <br /> 404 N W Set lane Walnut Creek.CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue Suit.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)792-034Z <br /> tiler-Ryan - Dublin Client Project ID Unocal SS#5686, Stockton Sampled Mar 1, 1999 <br /> 47 Sierra Court, Suite J Sample Descript Water, MW-5S Received Mar 2, 1999 <br /> Dublin, CA 94568 Analysis Method EPA 8260 Analyzed Mar 15, 1999 <br /> Attention Deanna Harding Lab Number 903-0240 Reported Mar 24, 1999 <br /> OXYGENATED COMPOUNDS (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> yg/L pg/L <br /> Ethanol 500 N D <br /> t-Butanol 100 N D <br /> Methylt- uty Ether 20 34 <br /> Di-isopropyl ter 2 0 <br /> Ethyl t-Butyl Ether (ETBE) 2 0 N D <br /> t-Amyl Methyl Ether (TAME) 2 0 N D <br /> Surrogates Control Limit % % Recovery <br /> Dibromofluoromethane 50 150 97 <br /> 1 2-Dlchloroethane-d4 50 150 83 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL, #1271 <br /> Wt,A•U N--A* <br /> nne Fegley <br /> Project Manager <br /> SM0233 GET <11> <br />