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CALTECH Environmental Laboratories <br /> 6814 Rosecrans Avenue Paiamounl CA 90723-3146 telephone (562) 272-2700 Fax (562) 272-2789 <br /> QA/QC Report <br />' Method 8260B <br />' Matrix Water <br /> Date Analyzed 3/11/05 <br />' Date Extracted 3/1/05 <br />' Perimeters Conc u /L Spike Recover % Control Limits RPD <br /> LCS LCSD Added LCS LCSD Rec RPD <br /> 1,1-Dichloroethene 43 45 50 86 90 70-130 20 4 <br />' Benzene 44 47 50 88 94 70-130 20 6 <br /> Trichloroethene 51 50 50 102 100 70-130 20 2 <br /> Toluene 45 47 50 1 90 94 70-130 20 4 <br /> Chlorobenzene 49 51 50 1 98 102 70-130 1 20 4 <br />' m, -X lenes 87 89 100 1 87 89 70-130 1 20 2 <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 05 <br /> Toluene ND ug/L 05 <br /> Chlorobenzene ND ug/L 05 <br /> t m,p-X lenes ND u /L D 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 ug/L 1 <br /> 1,2-Dic1loroethane ND u /L 0 5 <br /> EDB ND u /L 0 5 <br /> Eth (benzene ND u /L 05 <br /> o-X lene ND ug/L 0 6 <br /> TCE ND u /L 1 <br /> • PCE ND I uglL 1 <br /> TOTALLY DEDIC MED E-O CUSTOMER SATISFACTION <br />