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CALTECH Environmental Laboratories <br /> �TSI,4Rosecrans Avenue Paraount CA 90723-3146 <br /> m <br /> hone (562) 272-2700 Fax (562) 272-2789 <br />' QA/QC Report <br />' Method 8260B <br /> Matrix Water <br /> Date Analyzed 2/1/05 <br /> Date Extracted 2/1/05 <br /> Perimeters Cone u /L Spike Recover % Control Limits RPD <br /> LCS LCSD Added LCS LCSD Rec RPD <br /> 1,1-Dichloroethene 45 43 50 90 86 70-130 20 4 <br />' Benzene 50 49 50 100 98 70-130 20 2 <br /> Trichloroethene 46 46 50 92 92 70-130 20 0 <br /> Toluene 45 44 50 90 88 70-130 20 2 <br /> Chlorobenzene 45 43 50 90 86 70-130 20 4 <br /> m, -X lenes 95 92 100 95 92 70-130 20 3 <br />'. LCS Laboratory Control Standard <br /> LCSD Laboratory Control Standard Duplicate <br />' RPD Relative Percent Difference of LCS and LCSD <br />' Perimeters Method Units Det <br /> Blank Limit <br /> 1,1-Dichloroethene ND u /L 1 <br />' Benzene ND u /L 05 <br /> Trichloroethene ND ug/L. 05 <br /> Toluene ND ug/L 0 5 <br /> Chlorobenzene ND ug/L 0 5 <br />' m, -X lenes ND ug/L 06 <br /> MTBE ND u /L 1 <br /> TBA ND u /L 10 <br />' DIPE ND u /L 1 <br /> ETBE ND u /L 1 <br /> TAME ND u /L 1 <br /> 1,2-Dichloroethane ND u /L 0 5 <br /> EDB ND u /L 05 <br /> Eth (benzene ND u /L 05 <br /> o-X lene ND u /L 0 6 <br /> TCE ND ug/L 1 <br /> PCE ND u /L L 1 <br /> TOTALLY DEDICATED TO CUSTOMER SATISFACTION <br />