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CALTECH Environmental Laboratories <br /> I <br /> 7681,.4Rosecrans Avenue, Paraount CA 90723-3146 <br /> m <br /> hone (562) 272-2700 r7ax (362) 272-2789 <br /> QA/QC Report <br /> Method 8260B <br />' Matrix Water <br /> Date Analyzed 12/17/03 <br /> Units ug/L <br />' Perimeters LSC LCSD Spike LCS % LCSD % Limits RPD <br /> _ Added Rec Rec <br />' 1,1-Dichloroethene_ 44 42 50 88 82 60-140 7 <br /> Benzene 43 48 50 86 96 60-140 12 <br /> Trichloroethene 43 42 50 86 84 60-140 4 <br /> I Toluene 45 43 50 90 66 60-140 4 <br /> Chlorobenzene 48 45 50 96 90 60-140 6 <br /> M, -Xylenes 108 105 100 108 105 60-140 3 <br /> I <br /> LCS Laboratory Control Standard <br />' LCSD Laboratory Control Standard Duplicate <br /> RPD Relative Percent Difference of LCS arta 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 /> I <br /> I <br /> IOTALLY DEDICATED 10 CUSTOMER SATISFACTION <br />