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CALTECH Environmental Laboratories <br />' 68Rosecrans Avenue Pai amount CA 90723-3146 <br /> Tele14 phone (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 u /L Spike Recover % Control Limits RPD <br /> LCS LCSD Added LCS LCSD Rec RPD <br /> 1,1-Dichloroethene 47 46 50 94 92 70-130 20 0 <br /> Benzene 53 51 50 106 102 70-130 20 4 <br /> Trichloroethene 51 50 50 102 100 70-130 20 2 <br /> Toluene 53 52 50 106 104 70-130 20 1 2 <br /> Chlorobenzene 52 51 50 104 102 70-130 20 2 <br /> m, -X lenes 113 118 100 113 118 70-130 20 5 <br /> LCS Laboratory Control Standard <br /> LCSD Laboratory Control Standard Duplicate <br /> RPD Relative Percent Difference of LCS and LCSD <br /> I Perimeters Method Units Det <br /> Blank Limit <br /> 1,1-Dichloroethene ND u /L 1 <br /> Benzene ND u /L 05 <br /> Trichloroethene ND u /L 0 5 <br /> Toluene ND u /L 05 <br /> Chlorobenzene ND u /L 0 5 <br /> m,p-X lenes ND u /L 06 <br /> MTBE ND u /L 1 <br /> TBA ND u /L 10 <br /> DIPE ND u /L 1 <br /> ETBE ND u /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 (benzene ND u /L 05 <br /> o-X leve ND ug/L 0 6 <br /> TCE ND u /L 05 <br /> PCE ND ug/L 0 5 <br /> I <br /> I <br /> TOTALLY DFDICATLD FO CUSI OMER SATISFACTION <br />