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CALTECH Environmental Laboratories <br /> 6814 Rosecrans Avenue Paramount CA 90723-3 146 <br /> Telephone (562) 272-2700 Fax (562) 272-2789 <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 48 45 50 96 90 60-140 6 <br /> Benzene 46 44 50 92 88 60-140 4 <br /> Trichloroethene 42 44 50 84 88 60-140 4 <br /> Toluene 45 47 50 90 94 60-140 4 <br /> Chlorobenzene 45 47 50 90 94 60-140 4 <br /> m, -X lenes 106 1 102 100 106 102 60-140 4 <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, -X lenes 0 70-130 <br /> TOTALLY DFI)I(AFf I) TU CUSTOMER SATISFACTION <br />