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I <br /> CALTECH Environmental Laboratories <br /> O6814 Rosecrans Avenue ParinioUnt CA 90723-3 146 <br /> Telephone (562) 272-2700 Fax (562) 272-2789 <br /> QA/QC Report <br /> 1 <br /> Method 8260B <br />' Matrix Water <br /> Date Analyzed 10/2/03 <br /> Units ug/L <br /> IPerimeters LSC LCSD Spike LCS % LCSD % Limits RPD <br /> added Rec R�ec I <br />' 1,1-DEch;orcethene 48 45 50 96 90 60-140 6 <br /> Benzene � 52 50 50 102 100 60-140 2 <br /> T richlorcethene 55 51 50 110 102 60-140 8 <br /> Toluene � 57 55 50 114 110 60-140 4 <br /> Chlorobenzene 51 48 1 50 102 96 60-140 6 <br /> m, -X lenes 116 111 1 100 116 111 1 60-140 5 <br /> LCS Laboratory Control Standard <br /> LCSD Laboratory Control Standard Duplicate <br /> RPD Relative Percent Difference of LCS and LCSD <br /> I � <br /> Perimeters Blank Limits RPD <br /> 1,1-Dichloroethene 0 70-130 <br /> Benzene 0 70-130 <br /> Trichloroethene 0 70-130 <br /> Toluene 0 70-130 <br /> Chlorobenzene 0 70-130 <br /> rn, -X lenes 0 70-130 <br /> TOTAI LY DI-DICAF D TO CUSTOMER SATISFACTION <br />