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1 <br /> CALTECH Environmental Laboratories <br />' 7681',4Rosecrans Avenue, Paramount CA 90723-3 146 <br /> O hone (562) 272-2700 Fax (562) 272-2789 <br /> QA/QC Report <br />' Method 8260B <br /> Matrix Water <br /> Date Analyzed 2122105 <br />' Date Extracted 2/22/05 <br />' Perimeters Conc ug/L Spike Recover % Control Limits RPD <br /> LCS LCSD Added LCS LCSD Rec RPD <br /> 1,1-Dichloroethene 46 45 50 92 90 70-130 20 2 <br />' Benzene 47 45 50 94 90 70-130 20 4 <br /> Trichloroethene 48 46 50 96 92 70-130 20 4 <br /> Toluene 49 48 50 98 96 70-130 20 2 <br /> Chlorobenzene 46 45 50 92 90 70-130 20 2 <br /> m,p-Xylene s 90 86 100 90 86 70-130 1 20 4 <br />' LCS Laboratory Control Standard <br /> LCSD Laboratory Control Standard Duplicate <br /> IRPD 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 ug/L 0 5 <br /> Toluene ND ug/L 0 5 <br /> Chlorobenzene ND ug/L 0 5 <br /> m, -X lenes ND ug/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 1 <br /> TAME ND u /L I 1 <br /> 1 2-Dchloroethane ND u /L 0 5 <br /> EDB ND u /L 0 5 <br /> Eth lbenzene ND u /L 0 5 <br /> o-X leve ND u /L 0 6 <br /> TCE i ND ug/L 1 <br /> . PCE ND ug/L i <br /> F01'AC LY DEDICAI E D FO CUSTOMER R SATISFACTION <br />