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GTEL Client ID BLA01CHV08 QUALITY CONTROL RESULTS <br /> *gin Number W5120090 Volatile Organics <br /> oject. ID (number) 951201 G1 Method EPA 8020 <br /> Project ID (name) CHEVRON/9 1848/1257 YOSEMITE WEST/MANTECA/CA Matrix A ueous <br /> Calibration Verification Sample Summary <br /> Spike Check Sample QC Percent Acceptability Limits <br /> Analyte Amount Concentration Recovery Recovery <br /> EPA 8020 Units ug/L QC Batch 121395GC5 4 <br /> Benzene 20 0 19 6 98 0 77-123% <br /> Toluene 20 0 18 8 94 0 77 5-122 5% <br /> Ethylbenzene 20 0 19 8 99 0 63-137% <br /> Xylenes (Total) 60 0 59 3 98 8 85-115% <br /> TPH as Gasoline 500 544 109 80-120% <br /> Notes <br /> QC check source Supelco #LA12389 <br /> GTEL Wichita KS <br /> W5120090 4 <br />