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9 mI <br /> CEO- EO 10N,1TOR, -1 .,. <br /> P.O. BOX 1428 ,. `I ,�;.lf :,,,�,,�T <br /> :at=rf"E� s a <br /> 17152 DARWIN AVENUE !;'`�!" � '�� ' l�Tf <br /> MONITOR, HESPERIA,Califiornia 92345tr's iC <br /> INC. (619) 244-3481 ' PM <br /> j Edi <br /> Date Started: 4129193 Date Finished: 513/93 <br /> QUALITY ASSURANCE/QUALITY CONTROILkSUMMARY <br /> 61 .r , <br /> FOR BTXE <br /> `ANALY'TE �CONC FOUND `_.ACCURACY `MEAN A -- <br /> CCURACYRPD <br /> Spike S. Dup Spike S. Dup. <br /> 3 <br /> 124" 119 9.1' <br /> E'Benzene 5.7 6.2 114 <br /> Toluene 4.2 5.7 97.1' 127 105.6 7.3 <br /> z, <br /> spike level= 5 ppb unless otherwise specified <br /> 13 <br /> SAMPLES: 93GC240-251 <br /> CONTINUING CALIBRATION <br /> ANALYTE CONC. CONC. FOUND,, %RECOVERY <br /> (uglL) ��; '(ug/P <br /> enzene <br /> B20.0 22 110 <br /> .� .. P ._ I�' - '1816' , . "93 �f <br /> Toluene 20.0 <br /> E-benzene 20.0 18.6' 93 <br /> M&P-xylene 40.0 43.6 109 <br /> O-xylene 20.0 17.1 91 <br /> Mmmme:gch42"3 <br />