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bEO-MON' <br /> ITORtic. <br /> cooeoX 4z�`I'VI�'#.;�sWEINTAL �fEALTi: <br /> 17152 DARWIN AVENO <br /> MONITOR, HESPERIA, Caiiforniag9gl4j 17 $ <br /> -. INC. (619) 244-34$1 <br /> ji <br /> Date Started: 7112193 :Date Finished: 7/19193 <br /> QUALITY ASSURANCE/QUALITY CONTROL SUMMARY <br /> FOR BTXE, <br /> ANALYTE CONC FOUND ACCURACY MEAN ACCURACY RPD <br />' Spike S. Dup Spike S. Dup. <br /> Benzene 11.1 11.1 111:: 1I1 111 0 <br /> Toluene 11.0 10.9 110 109 109.5 0.9 <br /> ,i <br /> SAMPLES: 93GC444-452 <br /> i <br /> it <br /> CONTINUING CALIBRATION <br /> j <br /> i <br /> _ANALYTE CONC.' CONC. FOUND %RECOVERY <br /> (ug/L) . (ug/L) <br /> i: <br /> Benzene 19.6 ' 21.6 110 <br /> Toluene 20.0 Ir 21.9 110 <br /> E-benzene 10.0 10.0 100 <br /> M&P-xylene 19.7 20.1 102 <br /> O-xylene 10.8 8.6 81 <br /> i <br />