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CAL TECH Environmental Laboratories <br /> O6814 RoseLrans 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 3/15/04 <br /> Units ug/L <br /> Perimeters LSC LCSD Spike LCS % LCSD % Limits RPD <br /> Added Rec Rec <br /> 1,1-Dfchloroethene 42 44 50 84 88 60-140 4 <br /> Benzene 40 44 50 80 88 60-140 9 <br /> Trichloroethene 48 50 50 96 100 60-140 4 <br /> Toluene 1 45 48 50 90 96 60-140 1 6 <br /> Chlorobenzene 46 49 50 92 98 60-140 1 6 <br /> m,2-Xylenes 113 117 100 113 117 60-140 1 4 <br /> LCS Laboratory Control Standafd <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 /> • <br /> TOTALLY DI-DICAFFD TO CUSTOMER SATISFAC"I ION <br />