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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650) 364-9600 FAX(650)364 9233 <br /> ,!D 404 N Wiget Lane Walnut Creek CA 94598 (510) 989-9600 FAX(510)988 9673 <br /> /e n alytica a 19 Stnker Avenue,Suite 8 Sacramento CA 95834 (916) 921-9600 FAX(916)921 0100 <br /> Cambria Client Pro) ID Shell Manteca Sampled 03/25/98 <br /> 1144 65th St Suite C Sample Descript MW-1, 21-22 5 Received 03/26/98 <br /> Oakland, CA 94608 Matrix SOLID Extracted 04/01/98 <br /> Analysis Method EPA 8260 Analyzed 04/01/98 <br /> Attention Paul Waite Lab Number 9803J57-05 -Reported 04J09198 <br /> OC Batch Number MSO40198MTBEEXA <br /> Instrument ID H6 <br /> Oxygenate Compounds (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> ug/kg ug/kg <br /> Ethanol 25000 N D <br /> t-Butanol 5000 N D <br /> Methyl 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 75 <br /> i <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Fo <br /> rd Herling <br /> P ct Manager Page 10 <br />