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ASSOCIATED LABORATORIES <br /> QA REPORT FORM -METHOD 8260 / 624 /524.2 <br /> QC Sample MS/MSD-Water Samples 139082-666 <br /> Aosis Date October 28, 2004 150 AM <br /> Applies to LR 138880, 139132, 139082, 138954, 138955 <br /> Reporting Units= ug/L <br /> Matrix Spike/Matrix Spike Duplicate <br /> Sample Spike Matrix Matrix %Ree %Rec QC Limits <br /> Test Result Added Spike Spk.Dup MS MSD RPD RPD %REC <br /> 1,1-Dichloroethene ND 50 5336 5157 107 103 3 22 59-172 <br /> MTBE ND 50 5654 5768 113 115 2 24 62-137 <br /> Benzene ND 50 5239 5184 105 104 1 24 62-137 <br /> Tnchloroethene ND 50 5011 5037 100 101 1 21 66-142 <br /> Toluene ND 50 4946 5224 99 104 5 21 59-139 <br /> Chlorobenzene ND 50 50 82 5216 102 104 1 3 21 60-133 <br /> QC Sample LCS 1 13 PM <br /> Analysis Date October 27,2004 <br /> RECOVERY 1 METHOD BLANK <br /> Sample Spike LCS %Rec QC Limits <br /> Test Result Added Spike LCS %REC <br /> 1,1-Dichloroethene ND 50 5499 110 59-172 <br /> MTBE ND 50 4896 98 62-137 <br /> Benzene ND 50 53 05 106 62-137 <br /> Tnchloroethene ND 50 5301 106 66-142 <br /> Toluene ND 50 5034 101 59-139 <br /> Chlorobenzene ND 50 1 5112 1 102 60-133 <br /> Method Blank=All ND <br /> SURROGATE ( QC Limits : 70-135) <br /> Compound MB 1 MB 2 MS MSD LCS <br /> DBFM 93 92 97 93 96 <br /> 1,2-DCA 106 106 96 92 96 <br /> Tol-d8 100 99 1 97 99 99 <br /> p-BFB 97 t 93 90 92 92 <br /> 10/29/2004 8260 MSD-LCS 1028 W <br />