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x <br /> r <br /> Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650) 364-9600 FAX-(650)364-9233 <br /> 404 N.Wiget Lane Walnut Creek,CA 94598 (510) 988.9600 FAX(510)988-9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921-0100 <br /> CIMPDS Services Glient'ProjectlD': Tosco#5421,7303 Pacific Ave., Stockton ............ <br /> ampled. Dec 10, 1997:' <br /> 2401 Stanwell Dr., Ste. 300 Sample Descript: Liquid, MW-3 Received: Dec 10, 1997I< <br /> Concord, CA 94520 Analysis Method: EPA 8260 Analyzed: Dec 18, 1997.. <br /> Attention: .Jarrel Crider Lab Number: 712-1027 Reported: Dec 31, 1997 : <br /> OXYGENATE COMPOUNDS (EPA 8260) <br /> i <br /> Analyte Detection Limit Sample Results <br /> Ng/L Ng/L <br /> Ethanol.............................................................................. 500 ..................................... N.D. <br /> t-Butanol............................................................................ 100 ..................................... N.D. <br /> Methyl t-Butyl Ether (MTBE)............................................. 2.0 ............... N.D. <br /> DI-Isopropyl Ether (DIPE)................................................. 2.0 ...............I.................. N.D. <br /> Ethyl t=Butyl Ether(ETBE)................................................. 12.0 ............................... N.D. <br /> t-Amyl Methyl Ether (TAME)............................................. 2.0 ............:.................. N.D. <br /> Surrogates Control Limit% % Recovery <br /> j 1,2-Dichloroethane-d4...................................................... 76 114..................................... 98 <br /> Analytes reported as N.D.were not present above the stated limit of detection. <br /> l <br /> SEQUOIA ANALYTICAL, #1210 <br /> signature on File f <br /> Alan B- Kemp l <br /> Project Manager <br /> 1 7121025.MPD <8> <br />