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CALTECH Environmental Laboratories <br /> I6814 Rosecrjns N eou,: N-amount CA 0,0723-3146 <br /> O Felephone (562) 272-_700 Ftp\ (z62) 272-2789 <br /> QA/QC Report <br /> Method 82608 <br /> Matrix Water <br /> Date Analyzed 5114/04 <br /> Units ug/L <br /> Perimeters LSC LCSD Spike LCS % LCSD % Limits RPD <br /> Added Rec Ree <br /> I 1,1-Dichlorcethene 50 49 50 100 98 60-140 2 <br /> Benzene 45 41 50 90 82 60-140 9 <br /> Trichloroethene 47 43 50 94 86 60-140 8 <br /> Toluene 47 43 50 94 86 60-140 8 <br /> I Chlorobenzene 48 43 50 96 1 86 60-140 10 <br /> m,p-X lenes 100 96 100 100 96 60-140 4 <br /> lie <br /> LCS Laboratory Control Standard <br /> LCSD Laboratory Control Standard Duplicate <br /> RPD Relative Percent Difference of LCS and LCSD <br /> Perimeters Blank Limits RPD <br /> 1,1-Dichloroethene 0 70-130 <br /> Benzene 0 70-130 <br /> I Trichloroethene 0 70-130 <br /> Toluene 0 70-130 <br /> Chlorobenzene 0 70-130 <br /> m,p-Xylenes 0 70-130 <br /> I <br /> I <br />' 101-AI I Y ISI DIC A -D TO CUI-JO1 FIR SATISFAC'fTON' <br />