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ASSOCIATED LABORATORIES <br /> QA REPORT FORM- METHOD 826016241524.2 <br /> QC Sample MS/MSD-Water Samples 139811-915 <br /> AQsis Date November 7,2004 3 31 AM <br /> Applies to LR 139702, 139785, 139791, 139811 <br /> Reporting 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 ;11 RPD I %REC <br /> 1,1-Dichloroethene ND 50 5179 5132 104 103 1 22 59-172 <br /> MTBE 1153 50 6298 6399 103 105 2 24 62-137 <br /> Benzene ND 50 5464 5467 109 109 0 24 62-137 <br /> Tnchloroethene 1156 50 6155 5933 100 96 4 21 66-142 <br /> Toluene ND 50 50 81 4967 102 99 2 21 59-139 <br /> Chlorobenzene ND 50 5026 5030 101 101 0 21 60-133 <br /> QC Sample LCS/LCSD 2 16 PM <br /> Analysts Date November 6,2004 <br /> Sontrolled Spike/Lab Controlled Spike Duplicate <br /> Sample Spike LCS LCS %Rec %Rec QC Limits <br /> Test Result Added I Spike Spk Du p LCS LCS D RPD RPD %REC <br /> 1,1-Dichloroethene ND 50 5961 6221 119 124 4 22 59-172 <br /> MTBE ND 50 5490 5372 110 107 2 24 62-137 <br /> Benzene ND 50 5699 5987 114 120 5 24 62-137 <br /> Tnchloroethene ND 50 5484 5809 110 116 6 21 66-142 <br /> Toluene ND 50 5108 5445 102 109 6 21 59-139 <br /> Chlorobenzene ND 50 1 52 12___-L-53 89 104 108 3 21 60-133 <br /> Method Blank=All NO <br /> SURROGATE ( QC Limits : 70-135) <br /> Compound MB 3 MB 4 MS MSD LCS LCSD <br /> DBFM 99 102 101 99 97 103 <br /> 1,2-DCA 103 104 95 95 91 97 <br /> Tol-d8 97 94 92 93 95 95 <br /> p-BFB 106 j 102 101 100 94 98 <br /> 1111112004 8260 MSD-LCSD 1107 W <br />