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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 404 N Wlget lane Walnut Creek CA 94598 (510) 988-9600 FAX(510)988-9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,C4 95834 (916) 921 9600 FAX(916)921-0100 <br /> _ Gettler Ryan/Geostrategles M - Client Prof ED Former Unocal 2859, 260054 85 --- Sampled 03/06/98 <br /> 6747 Sierra Court Suite J Sample Descript MW-3 Received 03/06/98 <br /> Dublin, CA 94568 Matnx LIQUID <br /> Analysis Method EPA 8260 Analyzed 03/10/98 <br /> Attention Deanna Harding _ Lab Number 9803390-04 _ _ Reported_03118198 <br /> Q�f Batch Number MS031098MTSEF3A <br /> Instrument ID F3 <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 29 <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 76 114 101 <br /> 0 <br /> Anaiytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Amiliii, A//X� <br /> r ry <br /> Project Manager Page 9 <br />