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680 <br /> City CA 94063 (650) <br /> FAX(650) 364-9733 <br /> Sequoia 404 Nh Wiget kLane'Ve Walnut Creek CA 94598 (925)988-99600 FAX(925)988-9673 <br /> 8t9 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> CQ Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 1551 Industrial Road San Carlos CA 94070-41 11 (6501 232-9600 FAX(650)132-9612 <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-2 Received Apr 21, 1999 <br /> Dublin, CA 94568 Analysis Method EPA 8250 Analyzed Apr 29, 1999 <br /> _ Attention Deanna Harding-_ - =Lab-Number- 904-1856— -- - - --Reported - May-14, 1999- <br /> OXYGENATED COMPOUNDS (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> Ng/L N9/L <br /> Ethanol 1,000 N D <br /> t-Butanol 200 N D <br /> et y t- uty ter 0 180 <br /> Di-Isopropyl ter <br /> Ethyl t-Butyl Ether(ETBE) 40 N D <br /> t-Amyl Methyl Ether (TAME) 40 N D <br /> Surrogates Control Limit% % Recovery <br /> Dibromofluoromethane 50 150 85 <br /> 1,2-Dlchloroethane-d4 50 150 99 <br /> • <br /> Analytes reported as N 0 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 /> u anne Fegley <br /> olect Manager <br /> 9041854 GET <5> <br />