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GTEL Client ID BLAOICHV08 QUALITY CONTROL RESULTS Volatile Organics <br /> ,In Number W6030467 Method EPA 8020 <br /> o3ect ID (number) 950318-Z1 Matrix A ueous <br /> Pro ect ID (name) CHEVRON/9-4275/2905 W BENJAMIN HOLT DR/STOCKTON/CA <br /> Calibration Verification Sample Summary <br /> Spike Check Sample OC Percent Acceptability LIMItS <br /> Analyte Amount concentration Recovery Recovery <br /> EPA 8020 Units ug/L QC Batch 032796GC5-1 77.1123% <br /> Benzene 24 0 16 8 84 O <br /> Toluene 20 0 17 6 86 0 77 5-122 5� <br /> Etbylbenzene 20 0 18 1 90 b3-137% <br /> Xylenes (Total ) 60 0 53 1 88 5 85-115% <br /> TPH as Gasoline 500 573 115 80-120% <br /> Notes <br /> QC check source Supelco #LA12369 <br /> GTEL Wichita, KS <br /> W6030467 4 <br />