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ASSOCIATED LABORATORIES <br /> QA REPORT FORM- METHOD 8264 / 624 /524 2 <br /> QC Sample MS/MSD-Water Samples 142754-566 <br /> Aosis Date December 31,2005 3 57 AM <br /> Applies to LR 142445, 142754 <br /> Reporting Units= ug/L <br /> Matrix Spike/Matrix Spike DupLcate <br /> Sample Spike Matrix Matrix %Rec %Rec QC Lirmts <br /> Test Result Added Spike Spk Dup MS MSD RPD RPD F'/.RFC <br /> 1,1-Dichloroethene ND 50 43 10 4262 86 85 1 22 59-172 <br /> MTBE ND 50 3932 37 18 79 74 6 24 62-137 <br /> Benzene ND 50 4837 47 19 97 94 2 24 62-137 <br /> Tnchloroethene ND 50 4738 4729 95 95 0 21 66-142 <br /> Toluene ND 50 4922 4951 98 99 1 21 59-139 <br /> Chlorobenzene ND 50 4666 4680 93 94 0 21 60-133 <br /> QC Sample LCS/LCSD 10 27 PM <br /> Analysis Date December 30,2005 <br /> L ontrolled Spike/Lab Controlled Spike Duplieate <br /> Sample Spike LCS LCS %Rec %Rec QC Limits <br /> Test Result Added Spike Spk Dup LCS LCS D RPD RPD %REC <br /> 1,1-Dichloroethene ND 50 4353 4270 87 85 2 22 59-172 <br /> MTBE ND 50 38 11 4045 76 81 6 24 62-137 <br /> Benzene ND 50 4751 4558 95 91 4 24 62-137 <br /> Tnchloroethene ND 50 4863 4615 97 92 5 21 66-142 <br /> Toluene ND 50 4815 4828 96 97 0 21 59-135' <br /> Chlorobenzene ND 50 4778 4666 96 93 2 21 60-133 <br /> Method Blank=All NO <br /> SURROGATE ( QC Limits 70-135 ) <br /> Compound MB 2 MS MSD LCS LCSD <br /> DBFM 96 96 94 93 94 <br /> 1,2-DCA 107 104 99 95 96 <br /> Tot-d8 104 106 109 106 102 <br /> p-BFB 112 111 107 104 109 <br /> 11412005 8260 MSD-LCSD 1231 W <br />