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I <br /> CALTECH Environmental Laboratories <br /> 6814 Rosecrans Avenue Paiamount CA 90723-3146 <br /> Telephone (562) 272-2700 Fax (562) 272-2789 <br /> QA/QC Report <br /> Method 8260B <br /> Matrix Water <br /> Date Analyzed 1218104 <br />' Date Extracted 12/8/04 <br />' Perimeters Cone u IL Spike Recover % Control Limits RPD <br /> LCS LCSD Added LCS LCSD Rec RPD <br /> 1,1-Dichloroethene 42 45 50 84 90 70-130 20 6 <br />' Benzene 47 45 50 94 90 70-130 20 4 <br /> Trichloroethene 51 53 50 102 106 70-130 20 4 <br /> Toluene 45 49 50 90 98 70-130 20 8 <br />' Chlorobenzene 47 48 50 94 96 70-130 1 20 2 <br /> m, -X lenes 88 95 100 88 95 70-130 1 20 7 <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 ug/L. 1 <br /> Benzene ND u /L 0 5 <br />' Trichloroethene ND ug/L. 0 5 <br /> Toluene ND ug/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 u /L 10 <br />' DIPE ND u /L 1 <br /> ETBE ND u /L 1 <br /> TAME ND u /L 1 <br />' 1,2-Dchloroethane ND u /L 115 <br /> EDB ND u /L 0 5 <br /> Eth (benzene ND u /L 0 5 <br /> o-X lene ND u /L 0 6 <br />' Ethanol ND u /L 50 <br /> Methanol ND ug/L. T 1000 <br /> 1 <br /> TOTALLY DEDICAI ED -1,0 CUSI OM ER SATISFACTION <br />