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CALTECH Environmental Laboratories <br /> �T81.4Rosecrans Avenue Paranlont CA 90723-3146 <br /> n <br /> hone (562} 272_2700 Fax (562) 272-2789 <br />' QA/QC Report <br /> Method 8260B <br /> Matrix Water <br /> Date Analyzed 4/27/05 <br /> Date Extracted 4127105 <br />' Perimeters Conc u /L Spike Recover % Control Limits RPD <br /> LCS LCSD Added LCS LCSD Rec RPD <br /> 1,1-Dichloroethene 42 43 50 84 86 70-130 20 2 <br />' Benzene 52 52 50 104 104 70-130 20 0 <br /> Trichloroethene 47 45 50 94 90 70-130 20 4 <br /> Toluene 51 53 50 102 106 70-130 20 4 <br /> Chlorobenzene 55 57 50 110 114 70-130 1 20 4 <br /> m, -X lenes 89 91 100 89 91 70-130 20 2 <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 a /L 05 <br /> Trichloroethene ND u /L 0 5 <br /> Toluene ND u /L 0 5 <br /> Chlorobenzene ND u /L 0 5 <br />' m, -X lenss 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 /L i <br /> TAME ND u /L 1 <br /> 1,2-Dichloroethane ND u /L. 05 <br /> EDB ND u /L 0 5 <br /> Eth (benzene ND u /L 0 5 <br />' o-X Iene ND u /L 0 6 <br /> Ethanol ND u /L 50 <br /> Methanol i ND u /L 1000 <br /> TOTALLY DEDICATED rO CUSTOMER SATISFACTION <br />