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680 Chesapeake Drive Redwood City CA 94063 (650)364 9600 FAX(650) 364-9233 <br /> Sequoia 404 N Wiget Lane Walnut Creek CA 9459B (925)988-9600 FAX(925)988-9673 <br /> r3939819 Striker Avenue Suite 8 Sacramento CA 95834 (916)9Z 1-9600 FAX(916)921-0 100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (650)792-1865 FAX(707) 792 0312 <br /> 1551 Industrial Road San Carlos CA 94070 41II (650) 232-9600 FAX(650)232 961Z <br /> Client Project ID Arco#6020, Manteca Sampled Apr 30, 1999 <br /> bridge Road Sample Descript Soil, PL-2 (2 5') Received Apr 30, 1999 <br /> Cameron Park, CA 95682 Analysis Method EPA 8260 Analyzed May 5, 1999 <br /> Attention Joel Coffman Lab Number 905-0039 Reported May 5, 1999 <br /> QC Batch Number SP0504998260EXA <br /> Instrument ID GC/MS-2 <br />' OXYGENATED COMPOUNDS (EPA 8260) <br /> Analyte Detection Limit Sample Results <br />' pg/Kg Ng/Kg <br /> t-Butanol 5,000 N D <br /> Methyl t-Butyl Ether (MTBE) 100 N D <br /> 1 DI-Isopropyl Ether (DIPS) 100 N D <br /> Ethyl t-Butyl Ether (ETBE) 100 N D <br /> t-Amyl Methyl Ether(TAME) 100 N D <br /> Surrogates Control Limit% % Recovery <br /> 1 Dibromofluoromethane 50 150 80 <br /> 1,2-Dichloroethane-d4 50 150 98 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL, #1271 <br /> Melissa A Brewer <br /> Protect Manager <br /> ,�}, 9050030 PPP <13> <br />