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CALTECH Environmental Laboratories <br /> &szc an <br /> QA/QC Report <br /> Method 8015M /8021 B <br />' Matrix Water <br />' Date Analyzed 12/28/01 & 12/31/01 <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 2 5 <br /> Eth benzene 427 439 50 85 88 70-130 3 5 <br />' X lenes 113 118 150 75 79 70-130 5 3 TPH - Gasoline 446 473 500 89 95 60-140 6 7 <br /> TPH - Diesel 978 1034 1000 98 103 60-140 5 1 <br /> 10 <br />' LCS Laboratory Control Standard <br /> LCSD Laboratory Control Standard Duplicate <br />' RPD Relative Percent Difference of LCS and LCSD <br /> Ti.lTA I I Y i`F D11 11-1^! T", '11 C 10,1� 111IV[ k <br />