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ASSOCIATED LABORATORIES <br /> LCS REPORT FORM -METHOD 8260 / 624 / 524.2 <br /> QC Sample LCS/LCSD-Water Samples <br /> �sis Date 05/24/03 <br /> Applies to LR 110974, 111066, 110986, 110955, 110903 <br /> Reporting Units= ug/L <br /> Lab Controlled Spike/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-Dichloroethene ND 50 5493 5655 Ito 113 3 22 59-172 <br /> MTBE ND 50 5925 5791 119 116 2 24 62-137 <br /> Benzene ND 50 6025 5825 121 117 3 24 62-137 <br /> Tnchloroethene ND 50 6655 6062 133 121 9 21 66-142 <br /> Toluene ND 50 5982 5744 120 115 4 21 59-139 <br /> Chlorobenzene ND 50 15380 53 15 108 106 1 21 60-133 <br /> QC Sample LCS # 1 11 50 AM <br /> Analysis Date 05/25/03 <br /> LCS RECOVERY 1 METHOD BLANK <br /> Sample Spike LCS %Rec QC Limits <br /> Test Result Added Spike LCS %REC <br /> 1,1-Dzchloroethene ND 50 5676 114 59-172 <br /> MTBE ND 50 6110 122 62-137 <br /> Benzene ND 50 6020 120 62-137 <br /> Tnchloroethene ND 50 5613 112 66-142 <br /> Toluene ND 50 5733 1.15 59-139 <br /> Chlorobenzene ND 50 5514 110 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 120 93 102 95 <br /> LCSD 121 88 103 96 <br /> BLANK# 1 113 119 98 97 <br /> Ln # 1 121 91 102 92 <br /> 6/2/2003 8260 Icsd-Ics 0524w1 <br />