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FRIEDMAN & BRUYA, INC. <br /> ENVIRONMENTAL CHEMISTS <br /> Date of Report: 06/14/02 <br /> Date Received: 05/23102 <br /> Project: 6447.001 (LTS Can) <br /> QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF SOIL SAMPLES <br /> FOR VOLATILES BY EPA METHOD 8260B <br /> Laboratory Code: 206006-01 (Duplicate) <br /> Relative Percent <br /> Reporting Sample Duplicate Difference <br /> Analyte Units Result Result (Limit 20) <br /> 1,1-Dichloroethene µg/g (ppm) <0.005 <0.005 _ nm <br /> Benzene µg/g (ppm) <0.005 <0.005 nm <br /> Trichloroethene µglg (ppm) <0.005 <0.005 nm <br /> Toluene µg/g (ppm) <0.005 <0.005 nm <br /> Chlorobenzene y1g/g(ppm) <0.005 <0.005 nm <br /> Laboratory Code: 206006-01 (Matrix spike) <br /> Percent <br /> Reporting Spike Sample Recovery Acceptance <br /> Analyte Units Level Result MSCriteria <br /> 1,1-Dichloroethene µg/g (ppm) 0.05 <0.005 „1.3 50-150 <br /> Benzene µg/g (ppm) 0.05 <0.005 119 50-150 <br /> Trichloroethene µg/g (ppm) 0.05 <0.005 123 50-150 <br /> Toluene n/g (ppm) 0.05 <0.005 112 50-150 <br /> Chlorobenzene I & (ppm) 0.05 <0.005 95 50-150 <br /> Laboratory Code: Laboratory Control Sample <br /> Percent Percent <br /> Reporting Spike Recovery Recovery Acceptance RPD <br /> Analyte Units Level LCS LCSD Criteria (Limit 20) <br /> 1,1-Dichloroethene ytg/g (ppm) 0.05 107 105 50-150 2 <br /> Benzene µg/g (ppm) 0.05 105 106 50-150 1 <br /> Trichloroethene }Lg/g (ppm) 0.05 108 109 50-150 1 <br /> Toluene }Lg/g (ppm) 0.05 101 98 50-150 3 <br /> Chlorobenzene pg/g (ppm) 0.05 99 100 50.150 1 <br /> nm . The analyte was not detected in one or more of the duplicate analyses. Therefore, calculation of <br /> the RPD is not applicable. <br /> 5 <br />