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Sequoia680 Chesapeake Dnve Redwood Cory,CA 94063 (650) 364 9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988-9600 FAX(510)988-9673 <br /> Analytical 819 Sinker Avenue,Suste 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Sam98 <br /> Gettler Ryan/Geostrategies _ Client µID Former Unocal 2859, 280054 85 -� Received03//06/98/ <br />" 6747erra Court Suite J Sample Descript MW-9 <br /> ' Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method EPA 8260 Analyzed 03/10/98 <br /> Attention Deanna Harding _ _ _ Lab Number _9803391_10 _ _ ___ _ ____ Reported 03/18/98 <br /> QC Batch Number MS031098MTBEF3A <br /> Instrument ID F3 <br /> Oxygenate Compounds (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> Ethanol 500 N D <br /> 100 N D <br /> t-Butanol <br /> Methyl t-Butyl Ether (MTBE) 20 <br /> N D <br /> Di-Isopropyl Ether (DIPE) 20 N D <br /> Ethyl t-Butyl Ether (ETBE) 20 <br /> N D <br /> t-Amyl Methyl Ether (TAME) 20 N D <br /> Surrogates Control LiMdS% % Recovery <br /> 1,2-Dlchloroethane-d4 76 114 106 <br /> • <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP *1210 <br /> i <br /> egory Page 9 <br /> Project Manager <br />