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ASSOCIATED LABORATORIES <br /> LCS REPORT FORM <br /> QC Sample LCS/LCSD <br /> x WATER <br /> Prep Date November 19, 2004 <br /> Analysis Date November 19-20, 2004 <br /> LAB ID#'s in Batch LR 140370, 140636 <br /> REPORTING UNITS= ug/L <br /> LAB CONTROLLED SPIKE 1 LAB CONTROLLED DUPLICATE RESULT <br /> Sample SpikeMatnx Matnx %Ree %Rec <br /> Test Method Result Added LCS LCSD LCS LCSD RPD <br /> Benzene 8021 ND 20 211 213 106 107 1 <br /> Toluene 8021 ND 20 206 209 103 105 1 <br /> Ethylbenzene 8021 ND 20 214 218 107 109 2 <br /> liftas 8021 ND 60 603 607 101 101 1 <br /> ND=Not Detected <br /> RPD=Relative Percent Difference of Matnx LCS and Matrix LCSD %REC LIMITS = 70 - 130 <br /> %REC-LCS&LCSD=Percent Recovery of LCS&LCSD RPD LIMITS 30 <br /> SURROGATE RECOVERY <br /> Sample No. AAA-TF1' <br /> QC Limit 55-200 <br /> Method Blank 87 <br /> LCS 97 <br /> LCSD 95 <br /> AAA-TFT=a,a,a-Tnfluorotoluene <br /> 0 <br /> 11/29/2004 8021 BTEX LCS 1119 W <br />