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j Sequoia 680 Chesapeake Dnve Redwood City,CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988-960o FAX(510)968%73 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento CA 95834 (916) 921-9600 FAX(916)921 0100 <br /> Gettler Ryan-lGeosiraiegies -- - Client Proj ID Unocal SS# 5886 ----_ ^-Sampled 03/25/98 <br /> 6747 Sierra Dort Sul#e J Sample Descript MW-5S Received 03/25/98 <br /> Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method EPA 8260 Analyzed 03/31/98 <br /> ,:Attention Deanna Harding _ _ _ Lab Number 9803G82-08 _ Reported 04j08j98 <br /> QC Batch Number MS033198MTBEF3A <br /> Instrument I D 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 <br /> Methyl t-Butyl Ether (MTBE) 2 00 N D <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 76 114 104 <br /> i <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA AN LYTICAL - ELAP #1210 <br /> ory <br /> Pr anager Page Zp <br /> I <br /> m <br />