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i <br /> CALTECH Environmental Laboratories <br /> O6814 Rosecrans Avenue Palan101Ult 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 12/17/04 <br /> ' Date Extracted 12/17/04 <br /> ' Perimeters Conc ug/L- Spike Recover % Control Limits RPD <br /> LCS LCSD Added LCS LCSD Rec RPD <br /> 1,1-Dichloroethene 45 43 50 90 1 86 70-130 20 4 <br /> ' Benzene 47 45 50 94 90 70-130 20 4 <br /> Trichloroethene 51 50 50 102 100 70-130 20 2 <br /> Toluene 47 46 50 94 92 70-130 20 2 <br /> ' Chlorobenzene 45 45 50 90 90 1 70-130 1 20 0 <br /> m, -X lenes 98 1 97 100 98 97 1 70-130 20 1 <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 u IL 0 5 <br /> ' Trichloroethene ND u IL 0 5 <br /> Toluene ND u IL 0 5 <br /> Chlorobenzene ND u /L 0 5 <br /> m,p-X lenes ND ug/L 0 6 <br /> MTBE ND u /L 1 <br /> TBA ND u /L 10 <br /> ' DIPE ND ug/L 1 <br /> ETBE ND u /L 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 (benzene ND u /L 0 5 <br /> o-X lene ND u /L 0 6 <br /> ' <br /> TOE ND ug/L 0 5 <br /> PCE ND u /L 0 5 <br /> 1 � <br /> I <br /> ' TOTALLY DEDICATED ro CUSTOMER SATISFACTION <br />