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GTEL Client ID BLA01CHVOB QUALITY CONTROL RESULTS <br /> '4ogin Number W6110559 Volatile Or <br /> o0ect iD (number) 961126 A2 Method EPA 8420A <br /> Pro ect ID {name) CHEVRON/9-0342/1347 5 EL DORADO ST/STOCKTON/CA Matrix A ueous <br /> Calibration Verification Sample Summary <br /> Spike Check Sample GC Percent Acceptability Limits <br /> Analyte Amount Concentration Recovery Recovery <br /> EPA 8020A Units ug/L QC Batch 120696GC10-4 <br /> Benzene 20 0 17 3 89 G 77-123% <br /> Toluene 20 0 17 4 87 0 77 5-122 5% <br /> Ethylbenzene 20 0 17 3 86 5 63-1372 <br /> Xylenes (Total) 60 0 54 0 90 0 85-115% <br /> TPH as Gasoline 500 480 90 0 80-120% <br /> Notes <br /> QC check source Supelco #LA12389 <br /> NEI/GTEL Wichita, KS <br /> W6110559 4 <br />