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CALTECH Invironmental Laboratories <br /> 06814 Rosecrans Avenue, Paramount, 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: 3/9/05 <br /> Date Extracted: 3/9/05 <br /> Perimeters Conc. ug/L Spike Recovery % Control Limits RPD <br /> LCS LCSD Added LCS LCSD Rec. RPD <br /> 1,1-Dichloroethene 42 43 50 84 1 86 70-130 20 2 <br /> Benzene 44 46 50 88 92 70-130 20 4 <br /> Trichloroethene 45 47 50 90 94 70-130 20 4 <br /> Toluene 41 43 50 82 86 70-130 20 4 <br /> Chlorobenzene 43 47 50 86 94 70-130 20 8 <br /> m,p-X lenes 88 94 100 88 94 70-130 20 6 <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 ug/L 0.5 <br /> Toluene ND ug/L 0.5 <br /> Chlorobenzene ND ug/L 0.5 <br /> m,p-Xylenes ND ug/L 0.6 <br /> MTBE ND u /L 1 <br /> TBA ND u /L 10 <br /> DIPE ND ug/L 1 <br /> ETBE ND ug/L 1 <br /> TAME ND ug/L 1 <br /> 1,2-Dichloroethane ND u /L 0.5 <br /> EDB ND u /L 0.5 <br /> Eth (benzene ND ug/L 0.5 <br /> o-Xylene ND ug/L 0.6 <br /> TCE ND ug/L 1 <br /> PCE ND ug/L 1 <br /> TOTALLY DEDICATED TO CUSTOMER SATISFACTION <br />