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CALTECH Environmental Laboratories <br /> 14) C� 6814 Rosecrans Avenue, f aiamount CA 90723-3146 <br /> Telephone (562) 272-2700 fax (562) 272-2789 <br />' QA/QC Report <br /> Method 8260B <br />' Matrix Water <br /> Date Analyzed 12/21/04 <br />' Date Extracted 12/21/04 <br />' Perimeters Conc u /L Spike Recover % Control Limits RPD <br /> LCS LCSD Added LCS LCSD Rec RPD <br /> 1,1-Dichloroethene 48 46 50 96 1 92 70-130 20 4 <br />' Benzene 52 49 50 104 98 70-130 20 6 <br /> Trichloroethene 51 48 50 102 96 70-130 20 6 <br /> Toluene 49 46 50 98 92 70-130 20 6 <br />' Chlorobenzene 47 44 50 94 88 70-130 1 20 6 <br /> m, -X Penes 98 93100 98 93 70-130 1 20 5 <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 IL 1 <br />' Benzene ND ug/L_ 0 5 <br /> Trichloroethene ND u /L 0 5 <br /> Toluene ND u /L 0 5 <br /> Chlorobenzene ND ug/L 0 5 <br /> m,p-X lenes ND u /L 0 6 <br /> MTBE ND u /L 1 <br /> TBA ND u /L 10 <br />' DIPE ND u /L 1 <br /> ETRE ND u /L 1 <br /> TAME ND ug/L 1 <br />' 1,2-Dichloroethane ND u IL 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 u /L 0 5 <br /> PCE ND u /L 0 5 <br /> 1 <br /> TOTALI Y DE DICA I H) -10 C US1 OM ER SATISFACI ION <br />