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I <br /> NEI/GTEL Client ID- BLA01CHVOB QUALI'F'Y CONTROL RESULTS <br /> Login Number W7100038 Volatile Orgam cs <br /> �ro�ect ID {number) 970929-M1 Method EPA 8020A <br /> ro ect ID {name} CHEVRON/9-4275/2905 W BENJAMIN HOLT DR/STOCKTON/CA Matrix Aqueous <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 100497GC14-1 <br /> Benzene 20 4 20 3 102 77-1231 <br /> Toluene 20 0 20 1 101 77 5-122 5% <br /> Ethylbenzene 20 0 22 3 112 63-137% <br /> Xylenes (Total) 60 0 63 8 106 85-115% <br /> TPH as Gasoline 590 433 86 6 80-120% <br /> Notes <br /> QC check source Supelco #L.A12389 <br /> NEI/GTEL Wichita KS <br /> W7100038 4 <br />