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Sequoia 680 Chesapeake Drive Redwood City, CA 94063 (650) 364-9600 FAX(650)364 9233 <br /> 404N Wiget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921-0100 <br /> •••��-_ .....sem ss:s.sy=�sSsi:.—"s use= s+^—_sir�ssssusssus.0=r�....:s:»....i.�sisisils3s_——im.asssu ssc{.u!:.. ^••:'M-,�—T..z•••i-"• --+suwsus7lu:u^_^—u.ssisis�uus�sw'�sssi....i....tist <br /> t=.»..s.-.ss=—=.ss.sW-•.:sem <br /> Client Pra ID Shell 6131 Pacific, Stockton Sampled 09/16/97 <br /> _ Ertytros 1 p <br /> P <br /> 270 Perkins Ave Sample Descnpt MW-6-30' Received 09/19/97 IM <br /> Is Sonoma, CA 95476 Matrix SOLID Extracted 09/29/97 i< <br /> Analysis Method EPA 8260 Analyzed 09/30/97 M <br /> —IT-Attention J=Gaarder <br /> Lab Nu ✓-9709C09-08 _ Reported 10/103 97 <br /> '----- ,.........Number-- _- -- -- - _ - _ ...-.:..:.._...... _..._. . _........— <br /> QC Batch Number MSQ92997MTBEEXA- <br /> Instrument ID F2 <br /> Oxygenate Compounds (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> ug/Kg ug/Kg <br /> Ethanol 50000 N D <br /> t-Butanol 5000 N D <br /> Metyl t-Butyl Ether (MTBE) 100 N D <br /> Di-Isopropyl Ether (DIPE) 100 N D ' <br /> Ethyl t-Butyl Ether (ETBE) 100 N D <br /> t-Amyl Methyl Ether(TAME) 100 N D <br /> Surrogates Control Limits % % Recovery <br /> 1,2-Dichloroethane-d4 70 121 92 <br /> Analytes reported as N D were not present above the stated Irmit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Mike/degcProject Manager Page 23 <br />