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i <br /> i <br /> Sequoia 690 Chesapeake Dnve 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 g 19 Stnker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> Cambria Environmentaf Client Project ICS Shell, 2494 Fremont, Stockton, CA Sampled Apr 24, 1991 <br /> P 0 Box 259 Sample Descript Soil, SB-3-40" Received Apr 27, 199 <br /> Sonoma, CA 95476-0259 Analysis Method EPA 5030/8260 Analyzed May 4, 1998 <br /> Attention Mike Murphy Lab Number S804231 -00 Reported May 12, 1998 <br /> OXYGENATES by GC/MS (EPA 8260) <br /> Analyte Reporting Limit Sample Results <br /> Ng/kg pg/kg <br /> Ethanol 250,000 N D <br /> Tertiary butanol 50,000 N D <br /> Methyl tertiary butyl ether(MTBE) 1,000 N D <br /> Di-isopropyl ether (DIPS) 1,000 N D <br /> Ethyl tertiary butyl ether(ETBE) 1,000 N D <br /> Tertiary amyl methyl ether (TAME) 1,000 N D <br /> Surrogates Recovery Limits <br /> 1,2-Dichloroethane-d4 85% 70-120% <br /> Analytes reported as N D were not detected at or above the reporting limit Because matrix effects and/or other factors <br /> required additional sample dilution,reporting limits for this sample have been raised <br /> SEQUOI ANALYTICAL LAP #1210 <br /> ntla C Schnei er <br /> Project Manager/Sacramento Laboratory <br /> S804231 CES <1> <br />