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Sequoia680 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 /> Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707) 792-0342 <br /> 1 Gettler RyaniGeostrategles �N --Cliect Proles ID ---UNOCAL 2859, Stockton- �- Sampled 06/18/98 'µ= <br /> 6747 Sierra ourt Suite J Sample Descrlpt MW-5 Received 06/18/98 <br /> Dublin, CA 94588 Matrix LIQUID = <br /> Analysis Method EPA 8260 Analyzed 06/28/98 <br /> Attention Deanna Harding- _ _Lab Number_9806C89-06 _ _ _ __ _ _ _ __ Reported 07jl0198__ _ <br /> QC Batch Number MS062898803052A <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 EtherDIPE) 20 N D <br /> Ethyl t-Butyl Ether(ETRE) 20 N D <br /> t-Amyl Methyl Ether (TAME) 20 N D <br /> Surrogates Control Limits% % Recovery <br /> 1,2-Dlchloroethane-d4 76 114 85 <br /> • <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 41271 <br /> rpranicher <br /> Pr ct Manager Page 13 <br />