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CHEMWEST ANALYTICAL LABORATORIES <br /> BENZENE, TOLUENE, ETHYL BENZENE, XYLENES <br /> CW:CALUFT <br /> Quality Control <br /> Client ID: LQCS GC-6 5608 CHEMWEST ID: 9805- C1 <br /> Date Analyzed: 07/09/92 4 <br /> yMatrix Soil <br /> Spike <br /> Conc. Recovery Recovery <br />' Compound (mg/Kg) 9805-MBS 9805-MBSD RPD <br /> ------------------------------------------------------------ <br /> 0 . 50 98% <br /> Benzene 96% 2% <br /> Toluene 0 .50 98% 96% 2% <br />' Ethylbenzene 0. 50 100% 98% 2% <br /> p-Xylene 0 . 25 98% 96% 2% <br /> m-Xylene 0 .25 100% 98% 2% <br /> o-Xylene50100% 98% 2% <br /> Total-Xylenes 1 . 0 99% 2% <br /> -� <br /> -- ------------------- --------------------- <br /> Spike % % <br />' Conc. Recovery Recovery <br /> Surrogate (mg/Kg) 9805-MBS 9805-MBSD <br /> ------------------------------------------- <br /> Bromofluorobenzene - 100% <br /> -------------------------0--------- - <br /> CALUFT: See Narrative <br /> 1 <br /> 1 ' <br /> 1 <br />' Date Reported: <br /> Approved by: }� 07/21/92 REV 5 : 1. 90 <br /> COMPUCHEM WESTERN DIVISION <br />