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GTEL Client ID BLA01CHV08 QUALITY CONTROL RESULTS Volatile Organics <br /> ogin Number W6060168 Method. EPA 8020A <br /> roJect ID (number3. 960618-T2 Matrix A ueous <br /> Pro ect ID (name? CHEVRON/g-427512905 W BENJAMIN HOLT DR/STOCKTON/CA <br /> Calibration Verification Sample Summary <br /> Spike Check Sample QC Percent Acceptability Limits <br /> Analyte mount <br /> Concentration Recovery Recovery <br /> EPA 8020A Units ug/L QC Batch 062796GC420 31 102 77-131 <br /> Benzene 20 0 20 0 20 8 104 77 5-122 5% <br /> Toluene <br /> 2U O 21 3 1137 f:;3-1372Ethylbenzene 64 4 107 85-115% <br /> Xylenes (Total) 60 0 80-I2d% <br /> TPN as Gasoline Ann 60(3 120 <br /> Notes <br /> QC check source Supelco #LA123B9 <br /> GTEL Wichita KS <br /> W6060368 4 <br />