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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> ftill� Analytical 1455 McDowell Blvd North Ste D retalumL CA 94954 (707)792 1865 FAX(707)792-0342 <br /> Gettler Ryan/Geostrategies z - "Client Proj ID Unocal SS#5886%2701 W March-- Sampled 09/01/98 - <br /> 6747 Sierra Court Suite J Sample Descript MW-1 Received 09/02/98 " <br /> Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method EPA 8260 Analyzed 09/08/98 = <br /> Attention Deanna Harding Lab Number_ 9809049-02 . _Reported 10/01198 <br /> nstrument 1D MS2 <br /> Fuel Oxygenates by EPA 8260 <br /> Analyte Detection Limit Sample Results <br /> ug/L. us/L <br /> Ethanol 500 N D <br /> t-Butanol 100 N D <br /> Methyl t-Butyl Ether (MTBE) 20 N D <br /> Didsopropyl Ether (RIPE) 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-Dichloroethane-d4 76 114 92 <br /> i <br /> naEytes reported as N D were not present above the stated limit of detection <br /> ;EOUOIA ANALYTICAL - ELAP #1271 <br /> Po Granicher <br /> 'rolect Manager <br /> Page 2 <br />