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CALTECH Environmental Laboratories <br /> E ltJ <br /> QA/QC Report <br /> r <br /> Method 8015M /8021 B <br /> Matrix Water <br /> Date Analyzed 4/15/03 <br /> llrnts ug/L <br /> Perimeters LSC LCSD Spike LCS % LCSD % Limits RPD <br /> Added Rec Rec <br /> I Benzene 46 45 50 92 90 70-130 2 <br /> Toluene 43 42 50 86 84 70-130 2 <br /> Eth benzene 44 44 50 88 88 70-130 0 <br /> X Penes 135 129 1 150 90 86 70-130 4 <br /> TPH - Gasoline 988 950 1000 99 95 60-140 4 <br />�* LCS Laboratory Control Standard <br /> LCSD Laboratory Control Standard Duplicate <br /> RPD Relative Percent Difference of LCS and LCSD <br />