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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> ID 404 N Wlget Lane Walnut Creel.CA 94598 (925)985-9600 FAX(925)988-%73 <br /> 819 Striker Avenue,Suite 8 Sacramento CA 95834 (916)92I-9600 FAX(916)921-0100 <br /> IQF Analytical 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Gettler Ryan/Geostrategles Client Prol ID� Unocal SS#5417, 180179 85 Sampled 11/23/98 <br /> 6747 Sierra Court Suite J Sample Descript MW-1 Received 11/23/98 <br /> Dublin, CA 94568 Matrix LIQUID " <br /> Analysis Method EPA 8260 Analyzed 11/30/98 <br /> Attention Deanna Harding " _ Lab Number 9811A00-02 _ _ _ ___ Reported 12J17198__ i <br /> DC Batch Number -MS113098MTBEH6A <br /> nstrument ID H6 <br /> Oxygenate Compounds (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 /> Dl-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 76 114 104 <br /> 10 <br /> lnalytes reported as f3 D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Icher <br /> ct Manager Page 2 <br />