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CALTECH Environmental Laboratories <br /> QA/QC Report <br /> 1 <br /> Method 8015M /8021B <br /> ' Matrix Water <br /> Date Analyzed 4/3/03 <br /> Units ug/L <br /> Perimeters LSC LCSD Spike LCS% LCSD % Limits RPn <br /> _ Added Rec. Rec <br /> Benzene 41 42 50 82 84 70-130 - 2 <br /> Toluene 40 40 50 80 80 70-130 0 <br /> E^th benzene 36 37 50 72 74 1 70-130 2 <br /> ' <br /> Xylenes_ 123 127 150 82 84 1 70-130 2 <br /> TPH -Gasoline 970 1010 1000 97 101 1 60-140 3 <br /> ' LCS Laboratory Control Standard <br /> LCSD Laboratory Control Standard Duplicate <br /> RPD Relative Percent Difference of LCS and LCSD <br /> � 1 I <br /> i <br /> i <br /> 1 <br /> t <br /> r <br /> v D¢ <br />