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CAL TECH Environmental Laboratories <br /> • O 6814 Rosecrans Avenue Paramount CA 90723-3146 <br /> Telephone (5621272-2700 Fax (562) 272-2789 <br /> QA/QC Report <br /> Method 8260B <br /> Matrix Water <br /> Date Analyzed 3129/04 <br /> Units ug/L <br /> Perimeters LCS LCSD Spike LCS % LCSD% Limits RPD <br /> Added Rec Rec <br /> 1,1-Dichloroethene 50 51 50 100 102 60-140 2 <br /> Benzene 42 45 50 84 90 60-140 7 <br /> Trichloroethene 49 47 50 98 94 60-140 4 <br /> Toluene 40 40 50 80 80 60-140 0 <br /> Chlorobenzene 42 43 1 50 84 86 60-140 2 <br /> m, -X lenes 92 82 100 92 1 82 60-140 11 <br /> • <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 70-130 <br /> 10 i'ALI-Y DI i)1( A 1 11") f() CUSTOMER SATISFACTION <br />