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CALTECH Environmental Laboratories <br /> 6814 Rosecrans Avenue. Paramount. (-A 90723-3146 <br /> Telephone: (562) 272-2700 Fax: (562) 272-2789 <br /> QA/QC Report <br /> Method: 8260B <br /> Matrix: Water <br /> Date Analyzed: 9/5/05 <br /> Date Extracted: 9/5/05 <br /> Perimeters Conc. ug/L Spike Recovery % Control Limits RPD <br /> LCS LCSD Added LCS LCSD Rec. RPD <br /> 1,1-Dichloroethene 44 46 50 88 92 70-130 20 4 <br /> Benzene 48 50 50 96 100 70-130 20 4 <br /> Trichloroethene 50 51 50 100 102 70-130 20 2 <br /> Toluene 46 48 50 92 96 70-130 20 4 <br /> Chlorobenzene 46 49 50 92 98 70-130 20 6 <br /> m,p-Xylenes 96 1 103 100 96 1 103 70-130 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 ug/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 ug/L 1 <br /> TBA ND ug/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 ug/L 0.5 <br /> EDB ND ug/L 0.5 <br /> Ethylbenzene ND ug/L 0.5 <br /> lo-Xylene ND ug/L 0.6 <br /> • <br /> TOTALLY DEDICATED TO CUSTOMER SATISFACTION <br />