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9! d 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 /> Analy tical 819 Striker Avenue,Suite a Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Cambria Client Proj ID Shell 341 E Main Sampled 03/23/98 <br /> 1144 65th St Suite C Sample Descript MW-1, 28 7 Received 03/24/98 <br /> Oakland, CA 94608 Matrix LIQUID <br /> Analysis Method EPA 8260 Analyzed 03/25/98 <br /> Attention Paul Waite_ Lab Number 9803F79-08 - Reported 03131198 <br /> QC Batch Number MS032598MTBIrH6A <br /> Instrument ID H6 <br /> Oxygenate Compounds (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> Ethanol 330000 N D <br /> t-Butanol 67000 N D <br /> Methyl t-Butyl Ether (MTBE) .. 1300 ... 97000 <br /> Di-Isopropyl Ether(DIPE) 1300 N D <br /> Ethyl t-Butyl Ether(ETRE) 1300 N D <br /> t-Amyl Methyl Ether(TAME) 1300 N D <br /> Surrogates Control Limits% % Recovery <br /> 1,2-Dichloroethane-d4 76 114 84 <br /> Anaiytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTIZ- EP 01210 <br /> rd Herling <br /> roject Manager Page 15 <br />