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CALTECH Environmental Laboratories <br /> O6814 Rosecran, Avenite CA 90723-3146 <br /> lelenhone (162) 272-'700 fax 1 62) 272--,789 <br /> I <br /> QA/QC Report <br /> Method 8260B <br /> Matrix Water <br /> Date Analyzed 3/31/04 <br /> Units ug/L <br /> Perimeters LSC LCSD Spike LCS % LCSD % Limits RPD <br /> Added Rec Rec <br /> 1,1-Dichloroethene 40 41 50 80 82 60-140 2 <br /> Benzene 49 46 50 96 92 60-140 4 <br /> Trichloroethene 53 54 50 106 108 60-140 2 <br /> Toluene 41 42 50 82 84 60-140 2 <br /> Chlorobenzene 1 46 1 45 50 92 90 60-140 2 <br /> m,p-Xylenes 99 1 100 100 99 100 60-1 d0 1 <br /> LCS Laboratory Control Standard <br />' LCSD Laboratory Control Standard Duplicate <br /> RPD Relative Percent Difference of LCS and LCSD <br /> Perimeters Blank Limits RPD <br />' 1,1-Dichloroethene 0 70-130 <br /> Benzene 0 70-130 <br />' Trichloroethene 0 70-130 <br /> Toluene 0 70-130 <br /> Chlorobenzene 0 70-130 <br />' m,p-X lenes 0 1 70-130 <br /> 1 <br /> C <br />' TOTAI I Y DLDICt� f LD TO C LSTOMEP SATISFACTION <br />