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GTEL Client ID SIEOICHV08 QUALITY CONTROL RESULTS <br /> gin Number W4100126 Volatile Orgam cs <br /> Sect ID (number) 1 14fi 04 Method EFA 8020 <br /> ra�ect ID (name) CHV/9-fi171/6633 PACIFIC AVE/MARTINEZ/CA _ Matrix Aqueous <br /> Calibration Verification Sample Summary <br /> Spike Check Sample QC Percent Acceptability Limits <br /> Analyte Amount Concentration Recovery Recovery <br /> EPA 8020 Units ug/L QC Batch 101394GC17-5 <br /> Benzene 20 0 18.9 94.5 85-1151 <br /> Toluene 20 0 19 1 95 5 85-115% <br /> Ethylhenzene 20.0 19 1 95 5 85--11.5% <br /> Xylenes (Total) 60 0 57 9 96 5 85-115% <br /> Notes <br /> QC check source Supelco #LA12389 <br /> GTEL Wichita KS <br /> W4100126 4 <br />