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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650) 364 9600 FAX(650)364-9733 <br /> 404 N Wiget lane Walnut Creek,CA 94598 (510) 988-9600 FAX(510)988 9673 <br /> q4W Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(9t6)921 0100 <br /> .E Gettler RyanIGeostrategies -- Giant Prod ID'-µ-Unocal SS# 5886 - — Serripled 03/25%98 " <br /> 6747 Sierra Court Suite J Sample Descript MW-3 Received 03/25/98 ' <br /> Dublin, CA 94568 Matrix LIQUID , <br /> Analysis Method EPA 8260 Analyzed 03/30/98 <br /> 2_Attention Deanna Harding _ -__Lab Number 9803G82-04 _ Reported 04JO8198 <br /> QC Batch Number MS032898MTBEH6A - <br /> Instrument ID H6 <br /> Oxygenate Compounds (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> Ethanol 25000 N D <br /> t-Butanol 5000 6100 <br /> Methyl t-Butyl Ether(MTBE) 100 8500 <br /> Di-Isopropyl Ether (DIPE) 100 N D <br /> Ethyl t-Butyl Ether(ETBE) 100 N D <br /> t-Amy] Methyl Ether (TAME) 100 N D <br /> Surrogates Control Limits% % Recovery <br /> 1,2-Dichloroethane-d4 76 114 92 <br /> i <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 41210 <br /> rolellt=ager <br /> Page 8 <br />