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I <br /> CALTECH Environmental Laboratories <br /> I <br /> QA/QC Report <br /> Method <br /> 8260B <br /> iMatrix Soil <br /> Date Analyzed 6/9/03 <br /> iUnits ug/Kg <br /> IPerimeters LSC LCSD Spike LCS % I LCSD % Limits RPD <br /> Added Rec Rec <br /> I 1,1-Dchloroethene 55 52 50 110 104 60-140 6 <br /> Benzene 48 45 50 96 90 60-140 6 <br /> Trichloroethene 48 43 50 96 86 60-140 10 <br /> Toluene 49 47 50 98 94 60-140 4 <br /> Chlorobenzene 46 44 50 92 88 60-140 4 <br /> m,p-X lenes 108 96 100 108 96 60-140 11 <br /> I <br /> LCS Laboratory Control Standard <br /> LCSD Laboratory Control Standard Duplicate <br /> RPD Relative Percent Difference of LCS and LCSD <br /> I <br /> Perimeters Blank Limits RPD <br /> I1,1-Dichloroethene 0 70-130 <br /> Benzene 0 70-130 <br /> I Trichloroethene 0 70-130 <br /> Toluene 0 70-130 <br /> Chlorobenzene 0 70-130 <br /> m,p-X lenes 0 70-130 <br /> I <br />