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~ Sequoia �O Drive Redwood City U 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (925)988-%W FAX(925)988-%73 <br /> Analytical 619 Striker Avenue,Suite 6 Sacramento,U 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 /> •ur—•__ — ..«=s` ..s.[«�.s...a __." t —_ �.._______—=mss�m;.x.._ __ ___ _ —_— <br /> Gettler Ryan/Geostrategies «Client ProIDFormer Unocal SS#2859 Sampled: 12/04/98 31 <br /> - <br /> 6747 Sierra Court Suite J Sample Descnpt MW-5 Received- 12/04/98 43 <br /> ' Dublin, CA 94568 Matrix LIQUID <br /> M Analysis Method EPA 8260 Analyzed 12/09/98 -3 <br /> ;_Attention Deanna Harding _ _ — Lab Nl�mber- 9812431-06 __ _ _ Reported 12 18 98 ;, <br /> DC Batch Number MSt20998MT61=F2A� T - -- -- - <br /> Instrument ID F2 <br /> Oxygenate Compounds (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/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(DIPS) 20 N D <br /> Ethyl t-Butyl Ether(ETBE) 20 N D <br /> t-Amyl Methyl Ether (TAME) 20 N D <br /> Surrogates Control Limits % % Recovery <br /> 1,2-0ichloroethane-d4 76 114 98 <br /> 0 <br /> i <br /> i <br /> Analytes reported as ere not present above the stated limit of detection <br /> SEOU AL ICAL - ELAP #1210 <br /> TW <br /> ra er <br /> Project Manager Page- 10 <br />