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CALTECH Environmental Laboratories <br /> QA/QC Report <br /> Method 8015M /8021 B <br /> IMatrix Water <br /> Date Analyzed 12/28/01 <br /> Units ug/L <br /> Perimeters LSC LCSD Spike LCS% LCSD % Limits RPD <br /> Added Rec Rec. <br /> Benzene 406 421 50 81 84 70-130 3 7 <br /> Toluene 401 41 3 50 80 82 70-130 25 <br /> Eth benzene 1 427 1 439 5= 85 88 70-130 35 <br /> Xylenes 1 113 1 118 150 1 75 1 79 1 70-130 1 5 3 <br /> TPH - Gasoline 446 1 473 500 1 89 1 95 1 60-140 1 67 <br /> lie <br />' LCS Laboratory Control Standard <br /> LCSD Laboratory Control Standard Duplicate <br />' RPD Relative Percent Difference of LCS and LCSD <br /> 1 <br /> I <br />' T()TA1 Ly Df,DI( APED FI) C r1 i()NJ { `yfVI'ISFACTION <br />