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.1 ASSOCIATED LABORATORIES <br /> QA REPORT FORM <br /> i <br /> QC Sample LR Water samples <br /> Method 8260/624 <br /> Analysis Date 09/20/01 <br /> Applies to LR 79779 <br /> REPORTING UNITS = ug/L <br /> Sample Spike Matrix Matrix %Rec %Rec QC limits <br /> Test Result Added Spike Spk.Dup MS MSD RPD RPD %REC <br /> l-Dichloroethene ND 500 3871 3368 77 67 14 22 59-172 <br /> MTBE ND 500 5099 5544 102 H]1 8 24 62-137 <br /> Benzene ND 500 4201 4309 8.3 86 3 24 62-137 <br /> Tnchlorocthene ND 500 4279 37 91 86 76 12 21 66-142 <br /> Toluene ND 500 5629 53 23 1 1 3 106 6 21 59-139 <br /> Chlorobenzene ND 500 5568 52 83 1 1 1 106 5 21 60-133 <br /> ND=Not Defected <br /> • RPD=Relative Per cent DifterenceofA1Sand A1SD <br /> %REC-MS&MSD=Pei cent Recot en of MS&MSD <br /> Method Blank=All ND <br /> 9/25/2001 8260_msd_0920w <br />