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CALTECH Environmental Laboratories <br /> a6814 Rosecrans Avenue Pataniount 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 3/7105 <br />' Date Extracted 3/7/05 <br />' Perimeters Conc u /L Spike Recover % Control Limits RPD <br /> LCS LCSD Added LCS LCSD Rec RPD <br /> 1,1-Dichloroethene 43 44 50 86 1 88 70-130 20 2 <br />' Benzene 47 49 50 94 98 70-130 20 4 <br /> Trichloroethene 45 48 50 90 96 7 70-130 20 6 <br /> Toluene 46 48 50 92 96 70-130 20 4 <br /> Chlorobenzene 44 47 50 88 94 70-130 20 6 <br />' m, -X lenes 89 1 95 loo--1 89 1 95 70-130 20 6 <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-Dich loroethene 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, -X lenes ND u /L 0 6 <br /> MTBE ND u /L 1 1 <br /> TBA ND u /L 10 <br /> DIPS ND ug/L i <br /> ETRE ND ug/L 1 <br /> TAME ND u /L 1 <br />' 1,2-Dichloroethane ND u /L 0 5 <br /> EDB ND u /L 05 <br /> Eth lbenzene ND u /L 05 <br /> o-X lene ND u /L 0 6 <br />' TCE ND u /L 1 <br /> . PCE ND u /L 1 <br /> 1 <br /> 1 <br /> TOTALLY DEDIC ATED TO CUSTOMER SATISFACTION <br />