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1 <br /> CALTECH Environmental Laboratories <br /> Report <br /> QA/QCp <br /> ' Method 8015M/8021 B <br /> Matrix Water <br /> Date Analyzed 5123/03 <br /> ' Units ug/L. <br /> ' Perimeters LSC LCSD Spike LCS% LCSD % Limits RPD <br /> Added Rec Rec <br /> Benzene 47 50 50 94 100 70-130 6 <br /> Toluene 48 50 50 96 100 70-130 6 <br /> Eth benzene 47 1 47 1 50 1 94 94 70-130 0 <br /> Xylenes 140 151 150 93 i 01 70-130 9 <br /> TPH - Gasoline 1120 1032 1000 112 103 60-140 8 <br /> ' LCS Laboratory Control Standard <br /> LCSD Laboratory Control Standard Duplicate <br /> ' RPD Relative Percent Difference of LCS and LCSD <br /> 1 <br /> • <br />