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ASSOCIATED LABORATORIES <br /> QA REPORT FORM -METHOD 8260/624 /524.2 <br /> QC Sample MS/MSD-Water Samples 140296-416 <br /> Osis Date November 19,2004 7 59 PM <br /> Applies to LR 140265, 140311, 140296, 140351 <br /> Reportmg Units= ug/L <br /> Matrix Spike/Matrix Spike Duplicate <br /> Sample Spike Matrix Matrix %Rec %Rec QC Limits <br /> Test Result Added Spike Spk Dup MS MSD RPD RPD %REC <br /> 1,1-Dichloroethene ND 50 5731 5553 115 111 3 22 59-172 <br /> MTBE ND 50 4926 4733 99 95 4 24 62-137 <br /> Benzene ND 50 5243 5050 105 101 4 24 62-137 <br /> Tnchloroethene 393 50 5430 5054 101 93 7 21 66-142 <br /> Lolen ND 50 51 44 4949 103 99 4 21 59-139 <br /> enzene ND 50 49 53 46 19 99 92 7 21 60-133 <br /> QC Sample LCS/LCSD 145 PM <br /> Analysis Date November 19,2004 <br /> ontrolled Spike I Lab Controlled Spike Duplicate <br /> Sample Spike LCS LCS %Rec %Rec QC Limits <br /> Test Result Added I Spike Spk Dup LCS LCS D RPD RPD %REC <br /> 1,1-D3chloroethene ND 50 6080 5499 122 110 10 22 59-172 <br /> MTBE ND 50 5603 5038 112 101 11 24 62-137 <br /> Benzene ND 50 5814 5183 lib 104 11 24 62-137 <br /> TncWoroethene ND 50 53 10 4987 106 100 6 21 66-142 <br /> Toluene ND 50 5618 5124 112 102 9 21 59-139 <br /> Chlorobenzene ND 50 54 57 4963 109 99 9 21 60-133 <br /> Method Blank—All ND <br /> SURROGATE ( QC Limits . 70-135) <br /> Compound MB 1 MB 2 MS MSD LCS LCSD <br /> DBFM 97 96 102 104 102 102 <br /> 1,2-DCA 104 106 107 109 104 104 <br /> Tol-d8 101 99 106 98 99 IO2 <br /> p-BFB 106 101 98 1 102 1 101 100 <br /> 121212004 8260 MSD-.LCSD 1119 W <br />