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NEI/GTEL Client ID BLAOICHV08 QUALITY CONTROL RESULTS <br /> Login Number W7030066 Volatile Organics <br /> Project ID (number) 970228-F3 Method EPA 8020A <br /> Project ID (name) CHEVRON/9-1846/1257 YOSEMITE WEST/MANTECA/CA Matrix A ueous <br /> Duplicate Sample Results <br /> Original Duplicate Acceptability <br /> Analyte Concentration Concentration RPD X Limits X <br /> EPA 8020A Units ug/L QC Batch 031197GC17 8 GTEL Sample ID W7030048 01 Client ID Batch QC <br /> Benzene 3640 3360 8 00 23 9 <br /> Toluene 31 4 33 5 6 47 27 2 <br /> Ethylbenzene 285 314 9 68 21 6 <br /> Xylenes (Total) 292 309 5 66 22 0 <br /> EPA 8020A Units ug/L QC Batch 031197GC17-7 GTEL Sample ID W7030099 12 Client ID Batch QC <br /> Benzene 295 288 2 40 23 9 <br /> Toluene 5 64 6 40 12 6 27 2 <br /> Ethylbenzene 339 339 NA 21 6 <br /> Xylenes (Total) 176 187 6 06 22 0 <br /> Notes <br /> NA The concentration of the analyte is less than the reporting limit <br /> NEI/GTEL Wichita KS <br /> W7030066 5 <br />