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ASSOCIATED LABORATORIES <br /> QA REPORT FORM-METHOD 8260 /624 /524.2 <br /> Qc Sample MS/MSD- Water Samples 150489-346 <br /> Osis Date May 19,2005 6 22 AM <br /> Applies to LR 150420, 150474, 150489, 150592 <br /> Reporting Units= ug/L <br /> Matrix Spike/Matrix Spike Dupheate <br /> Sample Spike Matrix Matrix %Rec %Rec QC Limits <br /> Test Result Added Spike Spk Dup MS MSD RPD RPD %RFC <br /> I,1-Dchloroethene ND 250 2524 2539 101 102 1 22 59-172 <br /> MTBE ND 250 1986 2103 79 84 6 24 62-137 <br /> Benzene ND 250 2528 2602 101 104 3 24 62-137 <br /> Tnehloroethene ND 250 2249 2375 90 95 5 21 66-142 <br /> Toluene ND 250 2470 2553 99 102 3 21 59-139 <br /> Chlorobenzene ND 250 2462 2531 98 101 3 21 60-133 <br /> QC Sample LCS/LCSD 3 01 PM <br /> Analysis Date May 18,2005 <br /> I <br /> Lab Controlled Spike/Lab Controlled Spike Duphcate � <br /> Sample Spike LCS LCS %Rec %Rec QC Limits <br /> a I Result Added Spike Spk Dup LCS LCS D RPD RPD %REC <br /> l,l-Duhloroethene ND 500 5108 51 73 102 103 1 22 59-172 <br /> MTBE ND 500 4877 4948 98 99 1 24 62-137 <br /> Benzene ND 500 5093 5158 102 103 1 24 62-137 <br /> Tnehloroethene ND 500 4591 4495 92 90 2 21 66-142 <br /> Coluene ND 500 4898 4963 98 99 1 21 59-139 <br /> Chlomhenzene ND 500 5026 5030 101 101 0 21 60-133 <br /> Gasoline ND 1,000 704 713 70 71 1 20 NA <br /> Method Blank=All ND <br /> SURROGATE ( QC Limits : 70-135) <br /> Compound MB 1 MB 2 MS MSD LCS LCSD <br /> DBFM 98 101 96 100 100 100 <br /> 1,2-DCA 104 108 88 88 96 102 <br /> Toa-d8 99 100 99 101 100 99 <br /> p-BFB 100 101 106 101 102 101 <br /> 5/25/2005 8260 MSD-1 CSD 0519 W <br />