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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wlget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Gettler RyanGeostrategies- - Client Prol ID Unocal 5886,µ1S0137 85 - �� Sampled 06/17/98 <br /> / <br /> 6747 Sierra Court Suite J Sample Descript MW-1 Received 06/17/98 <br /> Dublin, CA 94568 Matrix LIQUID <br /> ' Analysis Method EPA 8260 Analyzed 06/27/98 <br /> Attention_Deanna Harding Lab Number -9806C26-02 Reported 07f09198 <br /> QC Batch Number MS062798826052A - <br /> Instrument ID MS-2 <br /> Fuel Oxygenates by 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 /> 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 Limits% % Recovery <br /> 1,2-Dlchloroethane-d4 76 114 93 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - EL.AP #1271 <br /> X).-- <br /> Tg rMann r <br /> t Manager Page 2 <br />