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CALTECH Environmental Laboratories <br /> O6814 Rosecrans Avenue Paramount CA 90723-3146 <br /> Telephone (562) 272-2700 Fax (562) 272-2789 <br />' <br /> QA/QC Report <br />' Method 8260B <br /> Matrix Water <br /> Date Analyzed 1/18/05 <br />' Date Extracted 1/18/05 <br />' Perimeters Conc u /L Spike recover % Control Limits RPD <br /> LCS LCSD Added LCS LCSD Rec RPD <br /> 1,1-Dichloroethene 46 45 50 92 90 70-130 20 2 <br />' Benzene 51 54 50 102 108 70-130 20 6 <br /> Trichloroethene 48 49 50 96 98 70-130 20 2 <br /> Toluene 52 51 50 1 104 102 70-130 20 2 <br />' Chlorobenzene 52 51 50 104 102 70-130 20 2 <br /> m,2-Xylenes 97 90 100 97 90 70-130 20 7 <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,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 /> ETBE ND u iL 1 <br /> TAME ND ug/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 /> o-X lene ND ug/L 0 6 <br /> TCE ND u /L 1 <br /> PCE ND u /L 1 <br /> 1 <br /> TOTALI Y DEDICATED TO CUSTOMER SATISFACTION <br />