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I <br /> CALTECH Environmental Laboratories <br />' 6814 Rosecrans Avenue PatanlOunt CA 90723-3146 <br /> O Telephone (562) 272-2700 Lar (562) 272-2789 <br /> I � <br /> QA/QC Report <br />' Method 8260B <br />' Matrix Water <br /> Date Analyzed 5121105 <br />' Date Extracted 5/21/05 <br />' Perimeters Conc ug1L Spike Recovery % Control Limits RPD <br /> LCS LCSD Added LCS LCSD Rec RPD <br /> 1,1-Dichloroethene 49 50 50 98 100 70-130 20 2 <br />' Benzene 55 56 50 110 112 70-130 20 2 <br /> Trichloroethene 57 56 50 114 112 70-130 20 2 <br /> Toluene 49 49 50 98 98 70-130 20 0 <br />' Chlorobenzene 49 48 50 98 96 70-130 20 2 <br /> m,p-Xylenes 121 128 100 121 128 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 u IL 0 5 <br /> Trichloroethene ND u IL 0 5 <br /> Toluene ND ug/L 0 5 <br />' Chlorobenzene ND ug/L 0 5 <br /> m,p-Xylenes ND u IL 0 6 <br /> MTBE ND ug/L 1 <br /> TBA ND ug/L 10 <br /> DIPE ND ug/L 1 <br /> ETBE ND u IL 1 <br /> TAME ND I 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 /> o-X lene ND u IL 0 6 <br /> TCE ND u IL 1 <br /> PCE ND ug/L 1 <br /> TOTALLY DEDICATED TO CUSTOMER SATISFACTION <br />