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ASSOCIATED LABORATORIES <br /> LCS REPORT FORM - METHOD 8260 / 624 / 524.2 <br /> QC Sample LCS/LCSD-Water Samples <br /> Wsts Date 06/11/03 <br /> Applies to LR 111782, 111837, 111320 <br /> Reporting Units= ug/L <br /> Lab Controlled Spike 1 Lab Controlled Spike Duplicate <br /> Sample Spike LCS LCS %Rec %Rec QC Limits <br /> Test Result I Added Spike Spk Dup LCS LCS D RPD RPD %REC <br /> 1,1-Dchloroethene ND 50 4536 4615 91 92 2 22 59-172 <br /> MTBE ND 50 5637 5742 113 115 2 24 62-137 <br /> Benzene ND 50 5409 5698 108 114 5 24 62-137 <br /> Tnehloroethene ND 50 5200 5381 104 108 3 21 66-142 <br /> L <br /> ND 50 51 47 54 25 103 109 S 21 59-139 <br /> zene ND 50 5044 5203 101 104 3 21 60-133 <br /> QC Sample LCS# 1 11 21 AM <br /> Analysts Date 06/12/03 <br /> LCS RECOVERY 1 METHOD BLANK <br /> Sample Spike LCS %Rec QC Limits <br /> tot Result Added Spike LCS %REC <br /> 1,1-Dichloroethene ND 50 4865 97 59-172 <br /> MTBE ND 50 5679 114 62-137 <br /> Benzene ND 50 5401 108 62-137 <br /> Trichloroethene ND 50 5074 101 66-142 <br /> Toluene ND 50 4810 96 59-139 <br /> Chlorobenzene ND 50 4591 92 60-133 <br /> Method Blank=All ND <br /> SURROGATE ( QC Limits : 70-130 ) <br /> Compounds DBFM 1,2-DCA Tol-d8 p-BFB <br /> LCS 95 77 106 105 <br /> LCSD 96 79 104 107 <br /> BLANK# 1 93 99 105 96 <br /> LCS# 1 95 84 103 107 <br /> 6117/2003 8260 Icsd-1cs 0611 w <br />