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CALTECH Environmental Laboratories <br /> QA/QC Report <br /> 1 <br /> Method 826OB <br /> 1 Matrix Water <br /> ' Date Analyzed 12/19/01 <br /> Units ug/L <br /> 1 Perimeters LSC LCSD Spike LCS % LCSD % Limits RPD <br /> Added Rec Rec <br /> 1,1-Dichloroethene 495 496 50 99 99 70-130 0 <br /> Trichloroethene 454 47 50 91 94 70-130 33 <br /> Chlorobenzene 493 50 50 99 100 70-130 14 <br /> ' Toluene 438 457 50 88 91 70-130 34 <br /> Benzene 465 48 3 50 93 97 70-130 43 <br /> LCS Laboratory Control Standard <br /> ' LCSD Laboratory Control Standard Duplicate <br /> RPD Relative Percent Difference of LCS and LCSD <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> i <br /> 1 <br />