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CALTECH Environmental Laboratories <br />' 6814 Rosecrans Avenue, Pat anIOUnt CA 90723-3146 <br /> i Telephone (562) 272-2700 Fax (562) 272-2789 <br /> QA/QC Report <br />' Method 8260B <br />' Matrix Water <br /> Date Analyzed 2/18/05 <br />' Date Extracted 2/18/05 <br />' Perimeters Conc u IL Spike Recover % Control Limits RPD <br /> LCS LCSD Added LCS LCSD Rec RPD <br /> 1,1-Dichloroethene 48 46 50 96 92 70-130 20 4 <br />' Benzene 47 45 50 94 90 70-130 20 4 <br /> Trichloroethene 52 48 50 104 96 70-130 20 8 <br /> Toluene 51 50 50 102 100 70-130 20 2 <br />' Chlorobenzene 49 47 50 98 94 70-130 20 4 <br /> m, -X lenes 106 102 100 106 102 70-130 20 4 <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-Dtchloroethene ND u /L 1 <br />' Benzene ND u /L 05 <br /> Trichloroethene ND ug/L 05 <br /> Toluene ND u /L 05 <br /> Chlorobenzene ND ug/L 05 <br />' m, -X lenes ND u /L 06 <br /> MTBE ND u /L 1 <br /> TBA ND u /L 10 <br /> DIPE ND u /L 1 <br /> ETBE ND ug/L_ 1 <br /> TAME ND ug/L 1 <br /> 1,2-Dtchloroethane ND u /L 05 <br /> EDB ND u /L 05 <br /> Eth lbenzene ND u /L 05 <br /> o-X leve ND u /L 06 <br /> TCE ND u /L 1 <br /> PCE ND u /L 1 <br /> I <br /> TOTALLY DEDICATED TO CUSTOMER SATISFACTION <br />