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r <br /> NEI/GTEL Client ID BLAO1CHV08 QUALITY CONTROL RESULTS <br /> Login Number W7040077 Volatile Organics <br /> roJect ID (number) 970401-F'1 Method EPA 8020A <br /> ro ect ID (name) CHEVRON/9 4275/2905 W BENJAMIN HOLT DR/STOCKTON/CA Hatrix A ueous <br /> Calibration Verification Sample Summary <br /> Spike Check Sample QC Percent Acceptability Limits <br /> Analyte Amount Concentration Recovery Recovery <br /> EPA 8020A Units ug/L QC Batch 040897GC14 1 <br /> Benzene 20 0 17 9 89 5 77-123% <br /> Toluene 20 0 17 4 87 0 77 5-122 5% <br /> Ethylbenzene 20 0 16 0 80 0 63-137% <br /> Xylenes (Total) 60 0 56 0 93 3 85-115% <br /> TPH as Gasoline 500 564 113 80-120% <br /> Notes <br /> QC check source Supelco KA12389 <br /> NEI/GTEL Wichita KS <br /> W7040077 4 <br />