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CALTECH Environmental Laboratories_ <br /> 1 u811l�ouuun S�unu aiaimunt_ t 1 '111 " <br /> QA/QC Report <br /> Method: 8260B <br /> Matrix: Water <br /> Date Analyzed: 3/20/07 <br /> Date Extracted: 3/20/07 <br /> Perimeters Conc. u /L Spike Recovery % Control Limits RPD <br /> MS MSD Added MS MSD Rec. RPD <br /> 1,1-Dichloroethane 47 45 50 94 90 70-130 20 4 <br /> Benzene 50 1 48 50 100 96 70-130 20 4 <br /> Trichloroethene 471 45 50 94 90 70-130 20 4 <br /> Toluene 52 49 50 104 98 70-130 20 6 <br /> Chlorobenzene 45 1 43 50 90 86 70-130 20 4 <br /> m,p-X lenes 1 96 91 1 100 96 91 70-130 20 j5 <br /> MS: Matrix Spike <br /> MSD: Matrix Spike Duplicate <br /> RPD: Relative Percent Difference of MS and MSD <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 u /L 0.5 <br /> Chlorobenzene ND u /L 0.5 <br /> m,p-X lenes ND u /L 0.6 <br /> MTBE ND u /L 1 <br /> TBA ND ug/L 10 <br /> DIPE ND ug/L 1 <br /> ETBE ND u /L 1 <br /> TAME ND u /L 1 <br /> 1,2-Dichloroethane ND ug/L 0.5 <br /> EDB ND ug/L 0.5 <br /> Ethylbenzene ND u /L 0.5 <br /> o-Xylene ND ug/L 0.6 <br /> TCE ND u /L 1 <br /> SI <br /> PCE ND ug/L 1 <br />