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1 <br /> CALTECH Environmental Laboratories <br /> O6814 Rosecrans Avenue Paramount CA 90723-3 146 <br /> Telephone (562) 272-2700 Fa\ (562) 272-2789 <br /> QA/QC Report <br /> Method 8260B <br /> IMatrix Water <br /> Date Analyzed 11/11/05 <br /> Date Extracted 11/11/05 <br /> Perimeters Conc ug1L Spike Recovery % Control Limits RPD <br /> LCS LCSD Added LCS LCSD Rec RPD <br /> 1,1-Dichloroethene 45 44 50 90 88 70-130 20 2 <br /> Benzene 47 49 50 94 98 70-130 20 4 <br /> Trichloroethene 49 51 50 98 102 70-130 20 4 <br /> Toluene 51 53 50 102 106 70-130 20 4 <br /> Chlorobenzene 45 47 50 90 94 70-130 20 4 <br /> m,p-Xylenes 96 102 100 96 102 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-Dichloroethene ND ug/L 1 <br /> Benzene ND ug/L 0 5 <br /> Trichloroethene ND ug/L 0 5 <br /> Toluene ND ug/L 0 5 <br /> Chlorobenzene ND ug/L 0 5 <br /> m,p-Xylenes ND u IL 0 6 <br /> MTBE ND ug/L 1 <br /> TBA ND ug/L 10 <br /> I D1PE ND ug/L 1 <br /> ETBE ND u IL 1 <br /> TAME ND ug/L_ 1 <br /> I 1,2-Dichloroethane ND ug/L 0 5 <br /> EDB ND ug/L 05 <br /> Ethylbenzene ND ug/L 0 5 <br /> I o-X lene ND ugIL 0 6 <br /> TCE ND ug/L 05 <br /> PCE ND ug/L 0 5 <br /> 1 <br /> I O TALLY DFDIC Al LD TO CUSTOMER SATISFACTION <br />