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CALTECH ECH Environmental 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: Soil <br /> Date Analyzed: 9/12/05 <br /> Date Extracted: 9/12/05 <br /> Perimeters Conc. ug/Kg Spike Recovery % Control Limits RPD <br /> LCS LCSD Added LCS LCSD Rec. RPD <br /> 1,1-Dichloroethene 45 46 50 90 92 70-130 20 2 <br /> Benzene 48 49 50 96 98 70-130 20 2 <br /> Trichloroethene 50 51 50 100 102 70-130 20 2 <br /> Toluene 52 52 50 104 104 70-130 20 0 <br /> Chlorobenzene 46 46 50 92 92 70-130 20 0 <br /> m,p-X lenes 1 105 107 1 100 105 107 1 70-130 20 2 <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/Kg 5 <br /> Benzene ND ug/Kg 5 <br /> Trichloroethene ND ug/Kg 5 <br /> Toluene ND ug/Kg 5 <br /> Chlorobenzene ND ug/Kg 5 <br /> m,p-Xylenes ND ug/Kg 5 <br /> MTBE ND ug/Kg 5 <br /> TBA ND ug/Kg 100 <br /> DIPE ND ug/Kg ug/Kg10 <br /> ETBE ND ug/Kg 10 <br /> TAME ND ug/Kg 10 <br /> 1,2-Dichloroethane ND ug/Kg 5 <br /> EDB ND ug/K 5 <br /> Eth (benzene ND ug/Kg 5 <br /> o-X lene ND ug/Kg 5 <br /> TCE ND ug/Kg ug/Kg5 <br /> PCE ND ug/Kg 5 <br /> TOTALLY DEDICATED TO CUSTOMER SATISFACTION <br />