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ASSOCIATED LABORATORIES <br /> LCS REPORT FORM - METHOD 5260/ 624 / 524 2 <br /> QC $ample LCS/LCSD -Water Samples <br /> Asis Date 05/27/03 <br /> Applies to LR 110974, 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 5107 5138 102 103 1 22 59-172 <br /> MTBE ND 50 5933 5491 119 110 8 24 62-137 <br /> Benzene ND 50 5826 5732 1 l 7 115 2 24 62-137 <br /> Tnchloroethene ND 50 5400 5590 108 112 3 21 66-142 <br /> Toluene ND 50 5434 5628 109 113 4 21 59-139 <br /> Chlorobenzene ND 50 5309 53 17 106 106 0 21 60-133 <br /> QC Sample LCS # 1 9 28 AM <br /> Analysis Date 05/28/03 <br /> LCS RECOVERY I METHOD BLANK <br /> Sample Spike LCS %Rec QC Limits <br /> Test Result I Added Spike LCS %REC <br /> I,1-Dichloroethene ND 50 5916 118 59-172 <br /> MTBE ND 50 5471 109 62-137 <br /> Benzene ND 50 5983 120 62-137 <br /> Tnchloroethene ND 50 5698 114 66-142 <br /> Toluene ND 50 5680 114 59-139 <br /> Chlorobenzene ND 50 5266 105 60-133 <br /> Method Blank=All ND <br /> SURROGATE (QC Linuts : 70-130 ) <br /> Compounds DBFM 1,2-DCA To]-d8 p-BFB <br /> LCS 103 75 98 88 <br /> LCSD 106 73 10 88 <br /> BLANK# 1 87 94 95 86 <br /> # 1 115 84 98 94 <br /> 6/2/2003 8260 lcsd-lcs 0527w1 <br />