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GTEL Client ID BLAO1CHV0B QUALITY CONTROL RESULTS <br /> Login Number W6050i78 Volat�7e Organics <br /> o�ect ID (number) 960507-W4 Method EPA 8020 <br /> ra ect ID (name) CHEVRON/9.0342/1347 5 EL DORADO ST/STOCKTQN/CA Matrix A ueous <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 051696GC17-1 <br /> Benzene 20 0 21 1 106 77-123% <br /> Toluene 20 0 21 5 108 77 5-122 5% <br /> Ethylbenzene 20 0 20 9 105 63--137% <br /> Xylenes (Total) 60 0 63 5 106 85-115% <br /> TPH as Gasoline 500 443 88 6 80-120% <br /> Notes <br /> QC check source Supelco #LA12389 <br /> GTEL Wichita KS <br /> W6050178 4 <br />