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CALTECH Environmental Laboratories <br /> O6814 Rosecrans Avenue Pat amount 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 12/14/04 <br />' Date Extracted 12/14/04 <br />' Perimeters Conc ug/L Spike Recover % Control Limas RPD <br /> LCS LCSD Added LCS LCSD Rec RPD <br /> 1,1-Dichloroethene 47 49 50 94 98 70-130 20 4 <br />' Benzene 47 48 50 94 96 70-130 20 2 <br /> Trichloroethene 53 54 50 1 106 108 70-130 20 2 <br /> Toluene 59 60 50 118 120 70-130 20 2 <br />' Chlorobenzene 45 45 50 90 90 70-130 20 0 <br /> m, -X lenes 97 97 100 97 1 97 70-130 1 20 0 <br /> l <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 u /L 0 5 <br /> Chlorobenzene ND u /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 ug/L 1 <br /> ETRE ND urr/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 lbenzene ND u /L 0 5 <br /> lo-Xylene ND ug/L 0 6 <br /> 1 <br /> TOTAI_I Y DFDICArM FO CUSTOMER SATISFACTION <br />