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GTEL Client ID GTR0lCHV08 QUALITY CONTROL RESULTS <br /> Login Number W6030124 Volatile Organics <br /> Project ID (number) 52:97 85 Method EPA 8020 <br /> Project ID (name) CHEVRON/9-0959/103 W 11TH STREET/TRACY/CA Matrix Aqueous <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 031396GC17-3 <br /> Benzene 2-0 0 19 5 97 5 77-123% <br /> Toluene 20 0 21 0 105 77 5-122 5% <br /> Ethylbenzene 20 0 2G 5 103 63-137% <br /> Xylenes (Total) 60 0 63 6 106 85-115% <br /> TPH as Gasoline 500 539 108 80.120% <br /> Notes <br /> QC check source Supelco #LA12389 <br />�j <br /> GTEL Wichita KS <br /> W6030124 4 <br />