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680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364 9233 ' <br /> a 444 N Wlget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988 9673 <br /> Sequoi <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 551 Industrial Road San Carlos CA 94070-4111 (650)232-9600 FAX(650)232-9612' <br /> Pinnacle Client Project ID Arco #6020, Manteca - Sampled Apr 30, 1999 <br /> 3939 Cambridge Road Sample Descript Soil, PL-5 (3') Received Apr 30, 1999 <br /> Cameron Park, CA 95682 Analysis Method EPA 8260 Analyzed May 5, 1999 <br /> Attention Joel Coffman Lab Number 905-0042 Reported May 5, 1999 <br /> QC Batch Number SP0504998260EXA <br /> Instrument Ip GC/MS 2 <br /> OXYGENATED COMPOUNDS (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> lug/Kg lug/Kg , <br /> t-Butanol 5,000 N D <br /> Methyl t-Butyl Ether (MTBE) 100 N D <br /> DI-isopropyl Ether (D1PE) 100 N D ' <br /> Ethyl t-Butyl Ether (ETRE) 100 N D <br /> t-Amyl Methyl Ether (TAME) 100 N D <br /> Surrogates Control Limit % % Recovery <br /> Dlbromofluoromethane 50 150 81 <br /> 1,2-Dlchloroethane-d4 50 150 99 <br /> AN <br /> a <br /> 1 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL, #1271 <br /> Melissa A Brewer <br /> Project Manager <br /> 9050030 PPP <16> e <br />