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4 i <br /> ASSOCIATED LABORATORIES <br /> LCS REPORT FORM <br /> QC Sample LCS/LCSD <br /> Matnx WATER <br /> Prep Date 07/24/03 <br /> Analysis Date 7/24103-7/25/03 <br /> LAB ID#'s to Batch LR 113999, 113939, 114028, 114002 <br /> REPORTING UNITS= mg/L <br /> PREPARATION BLANK 1 LAB CONTROL SAMPLE RESULTS <br /> PREP BLK JLCS LCSD <br /> Test Method Value I Result TRUE %Rec Result %Rec <br /> Benzene 8021 ND 206 20 103 189 95 <br /> Toluene 8021 ND 210 20 105 19 2 96 <br /> Ethylbenzene 8021 ND 1 21 7 20 1 109 19 6 98 <br /> Eenes 8021 ND 648 60 108 599 100 <br /> LCS =Lab Control Sample Result L Limit H Limit <br /> TRUE=True Value of LCS 80% 120% <br /> L LIMIT I H LIMIT=LCS Control Limits <br /> SURROGATE RECOVERY <br /> Sample No AAA-TFT <br /> QC Limit 55-240 <br /> Method Blank 93 <br /> LCS 109 <br /> LCSD 98 <br /> AAA-TFT=a a a-Trtfluorotoluene <br /> 8/1/2003 8021_btex_]csd_0725w <br />