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CHEMWEST ANALYTICAL LABORATORIES <br />HALOGENATED VOLATILEORGANICS <br />EPA METHOD:8010 <br />Quality <br />Client ID: LQCS GC -1 5102 <br />Date Analyzed: 04/28/92 <br />CHEMWEST ID: 9501-QC1 <br />Matrix : Soil <br />Date Reported: <br />Approved by: Y9 04/30/92 <br />COMPUCHEM WESTERN DIVISION <br />spike <br />% <br />% <br />Conc. <br />Recovery <br />Recovery <br />Compound <br />---------------------------------------------------------------- <br />(MG/KG) <br />9501 -MBS <br />9501-MBSD <br />RPD <br />1,1-Dichloroethane <br />0.30 <br />103% <br />110% <br />7% <br />Chloroform <br />0.30 <br />110% <br />113% <br />3% <br />Trichloroethene <br />0.30 <br />100% <br />107% <br />7% <br />Bromodichloromethane <br />0.30 <br />97% <br />103% <br />6% <br />Tetrachloroethene <br />0.30 <br />110% <br />113% <br />3% <br />Chlorobenzene <br />------------------------------------------------------------------- <br />0.30 <br />93% <br />97% <br />4% <br />Spike <br />% <br />% <br />Conc. <br />Recovery <br />Recovery <br />Surrogates <br />---------------------------------------------------------------- <br />(G/KG) <br />9501 -MBS <br />9501-MBSD <br />Bromochloromethane <br />10 <br />97% <br />103% <br />Ortho-Chlorotoluene <br />20 <br />91% <br />96% <br />Date Reported: <br />Approved by: Y9 04/30/92 <br />COMPUCHEM WESTERN DIVISION <br />