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GTEL Client ID BLA01CHV08 QUALITY CONTROL RESULTS <br /> Login Number W6120102 Volatile Organics <br /> .ProOect ID (number) 961204-Z1 Method EPA 8020A <br /> Pro ect ID (name} CHEVRON/9-4275/2905 W BENJAMIN HOLT DR/STOCKTON/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 8020A Un is ug/L QC Batch 121096GC17-1 <br /> Benzene 24 0 18 3 91 5 77-123% <br /> Toluene 20 0 20 1 101 77 5-122 5% <br /> Ethylbenzene 20 0 20 2 101 63-137% <br /> Xylenes (Total) 60 0 59 0 98 3 85-115% <br /> TPH as Gasoline 500 505 101 80-120% <br /> Notes <br /> QC check source Supelco #LA12389 <br /> • <br /> • <br /> NEI/GTEL Wichita KS <br /> W6120102 4 <br />