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Sequoia 68o Chesapeake Dnve Redwood City,CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 404 N W1Set Lane Walnut Creek CA 94598 (510) 988-9600 FAX(510)988-%73 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 92t 9600 FAX(916)921 0100 <br /> Gettler Ryan/Geostrategles - - - -Client Prod 10 Former Unocal 2859, 280054 85 - Re Cpl d 03/06/98 <br /> 03/06/98/0 / - <br /> 6747 Sierra Court Suite J Sample Descript MW-7 <br /> » Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method EPA 8260 Analyzed 03/10/98 <br /> Attention Deanna Harding Lab Number 9803391-08 _ _ _ 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 /> 20 ND <br /> Methyl t-Butyl Ether (MTBE) N D <br /> Di-Isopropyl Ether (DIPS) 20 <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-Dichloroethane-d4 76 114 101 <br /> 0 <br /> Analytes reported as N d were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> .. Z4��� <br /> e ory <br /> Project Manager Page 5 <br />