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CALTECH Environmental Laboratories <br />' O6814 Rosecrans Avenue Paramount CA 90723-3146 <br /> Telephone (562) 272-2700 Fa\ (562) 272-27089 <br /> QA/QC Report <br />' Method 8260B <br />' Matrix Water <br /> Date Analyzed 5/19/04 <br />' Units ug/L <br />' Perimeters LSC LCSD Spike LCS % LCSD % Limits RPD <br /> Added Rec Rec <br />' 1,1-Dichloroethene 42 44 50 - 84 88 60-140 4 <br /> Benzene 50 52 50 100 104 60-140 4 <br /> Trichloroethene 45 49 50 90 98 60-140 8 <br /> Toluene 44 46 50 e 88 92 60-140 4 <br />' Chlorobenzene 48 50 50 96 100 60-140 6 <br /> m,p-X lenes 97 100 100 97 100 60-140 3 <br /> 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, -X lenes 0 70-130 <br /> I <br /> TOTALLY DEDICATED rte CUSTOMER SATISFACTION <br />