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CALTECH Environmental Laboratories <br /> i6814 Rosecrans Avenue Pai amount CA 90723-3146 i Teiephone (562) 272-2700 Fa\ (562) 272-2789 <br /> QA/QC Report <br /> Method 8260B <br /> Matrix Water <br /> Date Analyzed 417/05 <br />' Date Extracted 4/7/05 <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 1 47 50 98 94 70-130 20 4 <br /> m, -X lenes 106 1 102 100 106 102 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-Dichloroethene ND u /L 1 <br />' Benzene ND u /L 0 5 <br /> Trichloroethene ND u /L 0 5 <br /> Toluene ND ug/L. 0 5 <br /> Chlorobenzene ND u /L 0 5 <br />' m, -X lenes ND u /L 0 6 <br /> MTBE ND u IL 1 <br /> TBA ND u /L 10 <br /> DIPE ND u /L 1 <br /> ETRE NU ug/L I <br /> TAME ND u /L 1 <br />' 1,2-Dichloroethane ND u /L 0 5 <br /> EDB ND u /L 0 5 <br /> Eth (benzene ND u /L 0 5 <br /> o-X lene ND u /L 0 6 <br /> TCE ND ug/L 0 5 <br /> PCE ND u /L 05 <br /> I <br /> TOTALLY DED1CAI 1 I) 1-0 CtISTOMLR SATISFACTION <br />