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Se uoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> q 404 N Wiget Lane Walnut Creek.CA 94598 (925)988-%00 FAX(92 5)988-9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)92i-9600 FAX(916)921-0106 <br /> 1455 MCDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 3 Gettler Ryan/Geostrategies Client Proj ID'»» Unocal SS#5886%2701 W March' »» Sampled 09/O1%98 µ <br /> 6747 Sierra Court Suite J Sample Descript MW-4D Received 49/02/98 <br /> Dublin, CA 94568 Matrix LIQUID = <br /> Analysis Method EPA 8260 Analyzed 09/09/98 <br /> Attention-Deanna Harding Lab Number 9809049-05 Reported_10f 01/98 <br /> Instrument 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) 20 15 <br /> DI-Isopropyi Ether (DIPS) 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 /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1271 <br /> 0--- 1Granlcher <br /> Project Manager Page 12 <br />