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GTEL Client ID BLAOICHV08 QUALITY CONTROL RESULTS <br /> �Login Number W6114204 Volatile Organics <br /> ro0ect ID (number) 961106-C1 Method EPA 8020A <br /> pro ect ID (name) CHEVRON/9 1848/1257 YOSEMITE WEST/MANTECA/CA Matrix A ueaus <br /> Calibration Verification Sample Summary <br /> Spike Check Sample OC Percent Acceptability Limits <br /> Analyte Amount Concentration Recovery Recovery <br /> EPA 8020A Units ug/L QC Batch 111896GC4 1 <br /> Benzene 20 0 16 9 84 5 77-123% <br /> Toluene 20 0 18 5 92 5 77 5-122 5% <br /> tthylbenzene 20 0 18 6 93 O 63-137% <br /> Xylenes (Total) 60 0 57 1 95 2 85-115% <br /> TPH as Gasoline 500 589 118 80-120% <br /> Notes <br /> QC check source Supelco #LAI2389 <br /> NEI/GTEL Wichita KS <br /> W6110204 4 <br />