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ASSOCIA'T'ED LABORATORIES <br /> LCS REPORT FORM <br /> QC Sample LCS/LCSD,water samples <br /> Method 8260 <br /> Analysts Date 03/29/01 <br /> Applies to LR 69899,69385,69880 <br /> REPORTING UNITS = ug/L <br /> Sample Spike LCS LCS %Rec I %Rec I QC Limits <br /> Test Result Added Spike Spk Dup LCS LCS D RPD RPD %REC <br /> 1,1-Dichloroethene ND 500 5105 4936 102 99 3 22 59-172 <br /> MTBE ND 500 3752 3741 75 75 0 24 62-137 <br /> Benzene ND 500 4678 4548 94 91 3 24 62-137 <br /> Tnchloroethene ND 500 4931 4891 99 98 1 21 66-142 <br /> Toluene ND 500 4863 4881 97 98 0 21 59-139 <br /> Chlorobenzene ND Soo 47 19 4603 94 92 2 21 60-133 <br /> • ND=Not Detected <br /> RPD=Relative Percent Difference of LCS and LCS Dup <br /> %REC-MS&MSD=Percent Recovery of LCS&LCS Dup <br /> Method Blank=All ND <br /> 04/17/2001 8260 lcsd 0329w4 xls <br />