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NEI/GTEL Client ID BLA01CHV08 QUALITY CONTROL RESULTS <br /> ,in Number W70300i2 Volatile Organics <br /> o3ect ID (number) 970225 K1 Method EPA 8020A <br /> ro ect ID (name) CHEVRON/9 4275/2905 W BENJAMIN HOLT DR/5TOCKTON/CA Matrix A ueous <br /> Calibration Verification Sample Summary <br /> Spike Check Sample QC Percent Acceptability Limits <br /> Analyte Amount concentration Recovery Recover <br /> EPA 8020A Units ug/L QC Batch 030797GCI 1 <br /> Benzene 20 0 20 9 105 77-123% <br /> Toluene 20 0 21 1 106 77 5-122 5% <br /> Ethylbenzene 20 0 19 9 99 5 63-1372 <br /> Xylenes (Total) 60 0 66 4 111 85-115% <br /> TPH as Gasoline 500 536 107 80-120% <br /> Notes <br /> QC check source Supelco #LA12389 <br /> NEI/GTEL Wichita K5 <br /> W7030012 4 <br />