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CALTECH Environmental Laboratories <br />' 6814 Rosecrans Avenue Paramount CA 90723-3146 <br /> O Telephone (562) 272-2700 Fax (562) 272-2789 <br />' <br /> QA/QC Report <br />' Method: 8260B <br />' Matrix Water <br /> Date Analyzed 2/15/05 <br /> 1 Date Extracted 2/15/05 <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 2 <br />' Benzene 50 48 50 100 96 70-130 20 4 <br /> Trichloroethene 52 49 50 104 98 70-130 20 6 <br /> Toluene 51 48 50 102 96 70-130 20 6 <br />' Chlorobenzene 49 47 50 98 94 70-130 20 4 <br /> m, -X lenes 103 95 100 103 95 70-130 20 8 <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 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 <br /> TBA ND a /L 10 <br /> I 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 Ibenzene ND a /L 0 5 <br /> o-X lene ND u /L 0 6 <br /> TCE ND u /L 1 <br /> PCE ND u /L 1 <br /> TOTALLY DEDICATED TO CUSTOMER SATISFACTION <br />