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CALTECH Environmental Laboratories <br /> I • 6814 Rosecrans Avenue Paramount CA 9072')-3146 <br /> Telephone (562) 272-2700 € ax (562) 272-2789 <br /> QA/QC Report <br /> Method 8260B <br />' Matrix Water <br /> Date Analyzed 2/11/04 <br /> rUnits ug/L <br /> Perimeters LSC LCSD Spike LCS % LCSD % Limits RPD <br /> Added Rec Rec <br /> I 1,1-D,chloroethene 40 42 50 80 84 60-140 4 <br /> Benzene 42 42 50 84 84 60-140 0 <br /> Trichloroethene 48 44 50 96 88 60-140 8 <br /> Toluene 47 1 43 1 50 94 86 60-140 8 <br /> I Chlorobenzene 49 1 45 1 50 98 90 60-140 8 <br /> m, -X lentis 92 1 90 1 100 92 1 90 60-140 2 <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 /> 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-Xylenes 0 70-130 <br /> I <br />' TOTAI I Y DI=DICAI'LD TO CUSTOMER SATISFACTION <br />