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CALTECH Environmental Laboratories <br /> 6814 Rosecrans Avenue Pat amount CA 90723-3146 <br /> Telephone (562) 272-2700 Fax (562) 272-2789 <br /> QA/QC Report <br /> Method 8260E <br /> Matrix Water <br /> Date Analyzed 2/25/05 <br /> Date Extracted 2/25/05 <br /> E Perimeters Conc_ ug/L Spike Recover % Control Limits RPD <br /> LCS LCSD Added LCS LCSD Rec RPD <br /> 1,1-Dichloroethene 41 40 50 82 80 70-130 20 2 <br /> Benzene 50 45 50 100 90 70-130 20 10 <br /> Trichloroethene 44 43 50 88 86 70-130 20 2 <br /> Toluene 44 43 50 88 86 70-130 20 2 <br /> Chlorobenzene 41 42 50 82 84 70-130 1 20 2 <br /> rn -X lenes 87 86 100 87 1 86 70-130 1 20 1 <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 ug/L 0 5 <br /> Toluene ND u /L 0 5 <br /> Chlorobenzene ND u /L 0 5 <br /> m, -X lenes ND u /L 0 6 <br /> MTBE ND u /L 1 <br /> TBA ND u /L 10 <br /> DIPE ND ug/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 0 5 <br /> Eth (benzene ND u /L 0 5 <br /> o-X lene ND u /L 06 <br /> TCE ND ug/L 1 <br /> PCE ND u /L 1 <br /> Y <br /> TOTALI Y DEDICATL'D TO CUSTOMER SATISFACTION <br />