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CALTECH Environmental Laboratories <br /> I 68Rosecrans Avenue Pararn011nt CA 90723-3 146 <br /> O Tele14 phone (562) 272-2700 Fax (562) 272-2789 <br /> QA/QC Report <br /> Method 8260B <br /> Matrix Water <br /> Date Analyzed 12/24/04 <br /> Date Extracted 12/24/04 <br /> I Perimeters Conc u /L Spike Recover % Control Limits RPD <br /> LCS LCSD Added LCS LCSD Rec RPD <br /> 1,1-Dichloroethene 43 1 44 50 86 88 70-130 1 20 2 <br />' Benzene 43 47 50 86 94 70-130 20 9 <br /> Trichloroethene 52 56 50 104 112 70-130 20 8 <br /> Toluene 43 47 50 86 94 70-130 20 9 <br /> Chlorobenzene 52 56 50 1 104 112 70-130 20 8 <br /> m, -X lenes 97 98 100 1 97 1 98 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 /L 1 <br />' Benzene ND u /L 05 <br /> Trichloroethene ND u /L 05 <br /> Toluene ND u /L 05 <br /> Chlorobenzene ND u /L 05 <br />' rn,p-X lenes ND u /L 0 6 <br /> MTBE ND a /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 IL 0 5 <br />' o-X lene ND u /L 0 6 <br /> Ethanol ND ug/L 50 <br /> Methanol ND u /L 100 <br /> I <br /> TOTALLY DEDICAl ED TO CUSTOMER SATISFACTION <br />