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I <br /> CALTECH Environmental Laboratories <br /> - . <br /> QA/QC Report <br /> 1 <br /> Method 8260B <br /> Matrix Water <br /> Date Analyzed 12/21/01 <br /> Units ug/L <br /> Perimeters LSC LCSD Spike LCS % LCSD % Limits APD <br /> Added Rec Ree <br /> 1,1-Dichloroethene 449 471 50 90 94 70-130 44 <br /> Trichloroethene 472 463 50 94 93 70-130 1 1 <br /> Chforobenzene 50 516 50 100 103 70-130 3 <br />' Toluene 452 1 45 1 50 1 90 1 90 70-130 0 <br /> Benzene 467 473 1 50 1 93 1 95 70-130 2 2 <br />' LCS Laboratory Control Standard <br /> LCSD Laboratory Control Standard Duplicate <br /> RPD Relative Percent Difference of LCS and LCSD <br /> 1 <br />