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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 /> ,� Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)9zt-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaiuma.CA 94954 (707)79Z-1865 FAX(707)792 0342 <br /> 0 <br /> OE- -- --- - — - -_- - — -^ - _ ------- -- <br /> Gettler Ryan/G eostrateg ies Client Prod ID Unocal 5886, 180137 85w - Sampled-06/17/98 <br /> 6747 Sierra Court Suite J Sample Descript MW-4S Received 06/17/98 µ� <br /> Dublin, CA 94568 Matrix LIQUID <br /> w Analysis Method EPA 8260 Analyzed 06/27/98 - <br /> Attention Deanna Harding _ _ Lab Number 9806C26-06 - -Reported 07109/98 <br /> 90C 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 12 <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-Dichloroethane-d4 76 114 95 <br /> • <br /> • <br /> •Analytes reported as N D were not present above the stated lima of detection <br /> SEQUOIA ANALYTICAL - ELAP #1271 <br /> Granicher <br /> ect Manager Page 14 <br /> • <br />