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680 Chesapeake Drive Redwood Co CA 94063 (650)364-9600 FAX(650)3649233 <br /> Sequoia 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(9Z5)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-%W FAX(916)921-0100 <br /> low Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-0341 <br /> 1551 Industrial Road San Carlos CA 94070-41 It (650)232-9600 FAX(650)232-9612 <br /> ettier-Ryan -Dublin Client Project 1D Unocal 88#5098, Stockton Sampled `June 17, 1999, <br /> 747 Sierra Court, Suite J Sample Descript Water, MW-22S Received Jun 18, 1999 <br /> Dublin, CA 94568 Analysis Method EPA 8260 Analyzed Jun 28, 1999 <br /> Attention Deanna Harding Lab Number 906-1578 Reported Jun 30, 1999 ` <br /> OXYGENATED COMPOUNDS (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> Ng/L Ng/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(ETBE) 20 N D <br /> t-Amyl Methyl Ether(TAME) 20 N D <br /> Surrogates Control Limit% % Recovery <br /> Dibromofluoromethane 50 150 101 <br /> 1,2-Dlchloroethane-d4 50 150 99 <br /> Analytes reported as N O were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL, #1271 <br /> i �vl <br /> Janne Fegley <br /> Project Manager <br /> 9061562 GU <8> <br /> m � <br />