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I <br /> I <br /> NEI/GTEL Client ID BLAO1CHV08 QUALITY CONTROL RESULTS <br /> Login Number W7050168 Volatile Organics <br /> *Pro-ject- <br /> roject ID (number) 970506-51 Method EPA 8020A <br /> ID (name) CHEVRON/9 4275/2905 W BENJAMIN HOLT DR/STOCKTON/CA Matrix Aqueous <br /> Calibration Verification Sample Summary <br /> Spike Check Sample QC Percent Acceptability Limits <br /> Analyte Amount Concentration Recovery Recovery <br /> EPA 8020A Units ug/L QC Batch 051597GC5-1 <br /> Benzene 20 0 20 8 104 77-123% <br /> Toluene 20 0 20 8 104 77 5-122 5% <br /> Etfiylbenzene 20 0 20 1 101 63-137% <br /> Xylenes (Total) 60 0 61 2 102 85-115% <br /> TPH as Gasoline 500 516 103 80-120% <br /> Nates <br /> QC check source Supelco #LA12389 <br /> • <br /> i <br /> NEI/GTEL Wichita KS <br /> W7050168 4 <br />