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Sequoia680 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,Swte 8 Sacramento,CA 95834 (916) 921-9600 FAX (916)921-0100 <br /> low <br /> Enviros Client Pro ID Shell 6131 PaRic, Stockton Sampled 09/16/97 » <br /> 270 Perkins Ave Sample Descript MW-4-56' Received 09/19/97 M- <br /> Sonoma, CA 95476 Matrix SOLID Extracted 09/29/97 I <br /> Analysis Method EPA 8260 Analyzed 09/29/97 <br /> Attention J Gaarder Lab Number 9709009-01 _ Reported 10/03 _ <br /> 3C Batch Number MS092997MTBEEXA <br /> nstrument 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 EtherMTBE) 100 N D <br /> Di-Isopropyl Ether IDIPE) 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 94 <br /> Ft <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 01210 <br /> M r gory <br /> Project Manager Page 2 <br />