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4 <br /> Client Number: 020704238 <br /> Consuhant Project Number: 020704238 <br /> Facility Number: 9.7780 <br /> Project 1D: 3246 East Fremont Street <br /> Stockton,CA <br /> Work Order Number: 0311-0045 <br /> QC Matrix Spike and Duplicate Spike Results <br /> Matrix: Water <br /> Sample Spike Recovery, Duplicate Control <br /> Analyte ID Amount Units % Recovery, % RPD, % Limits <br /> Modified EPA 8020: <br /> Benzene C3110036-03 20 ug/L 93.0 86.5 7.2 55-129 <br /> Toluene C3110036-03 20 ug/L 97.0 90.5 6.9 72 -149 <br /> Ethylbenzene C3110036-03 20 ug/L 96.5 90.0 7.0 75 -138 <br /> Xytene, total C311003"3 60 u /L 99.6 91.8 8.3 74-147 <br /> • <br /> GTEL Concord,CA CGTEL <br /> C:3110045.pC ENVIRONMENTAL <br /> LABORATORIES, INC <br />