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i <br /> s. t. <br /> Sequoia 680 Chesapeake Dave Redwood City CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek.CA 94598 (92S)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 RyanlGeostrategles _ Client Prol ID Unocal SS#5886/2701 W March - - Sampled 09/01/98 <br /> 6747 Sierra Court Sutte J Sample Descript MW-4S 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 9809049-06 _ _ Reported 10101198 <br /> nstrument ID MS2 <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) 2 0 80 <br /> Di-Isopropyl Ether (DIPE) 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-Dichloroethane-d4 76 114 92 <br /> 0 <br /> �rialytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1271 <br /> T Granicher <br /> Drolect Manager Page 16 <br />