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Herst Associates Project: Misc.Samples Reported: 05/23/2007 13:28 <br /> 4630 South Highway 94 North Outer Road Project Number: NCYC Tank Samples <br /> North Outer Rd. Project Manager: David Vasbinder <br /> Saint Charles,MO 63304 <br /> Volatile Organic Analysis (EPA Method 8260) <br /> Quality Control Report - Method Blank Analysis <br /> Constituent Batch ID QC Sample ID MB Result Units PQL MDL Lab Quals <br /> 1,1-Dichloroethane BQE0698 BQE0698-BLK1 ND mg/kg 0.0050 0.0012 <br /> 1,2-Dichloroethane BQE0698 BQE0698-BLK1 ND mg/kg 0.0050 0.00099 <br /> 1,1-Dichloroethene BQE0698 BQE0698-BLK1 ND mg/kg 0.0050 0.0017 <br /> cis-1,2-Dichloroethene BQE0698 BQE0698-BLK1 ND mg/kg 0.0050 0.0014 <br /> trans-l,2-Dichloroethene BQE0698 BQE0698-BLK1 ND mg/kg 0.0050 0.0015 <br /> 1,2-Dichloropropane BQE0698 BQE0698-BLK1 ND mg/kg 0.0050 0.00079 <br /> 1,3-Dichloropropane BQE0698 BQE0698-BLK1 ND mg/kg 0.0050 0.00062 <br /> 2,2-Dichloropropane BQE0698 BQE0698-BLK1 ND mg/kg 0.0050 0.0013 <br /> 1,1-Dichloropropene BQE0698 BQE0698-BLK1 ND mg/kg 0.0050 0.0015 <br /> cis-1,3-Dichloropropene BQE0698 BQE0698-BLK1 ND mg/kg 0.0050 0.00085 <br /> trans-1,3-Dichloropropene BQE0698 BQE0698-BLK1 ND mg/kg 0.0050 0.0011 <br /> Ethylbenzene BQE0698 BQE0698-BLK1 ND mg/kg 0.0050 0.0013 <br /> Hexachlorobutadiene BQE0698 BQE0698-BLK1 ND mg/kg 0.0050 0.0017 <br /> Isopropylbenzene BQE0698 BQE0698-BLK1 ND mg/kg 0.0050 0.0014 <br /> p-Isopropyltoluene BQE0698 BQE0698-BLK1 ND mg/kg 0.0050 0.0014 <br /> Methylene chloride BQE0698 BQE0698-BLK1 ND mg/kg 0.010 0.0024 <br /> Methyl t-butyl ether BQE0698 BQE0698-BLK1 ND mg/kg 0.0050 0.0012 <br /> Naphthalene BQE0698 BQE0698-BLK1 ND mg/kg 0.0050 0.0013 <br /> n-Propylbenzene BQE0698 BQE0698-BLK1 ND mg/kg 0.0050 0.0012 <br /> Styrene BQE0698 BQE0698-BLK1 ND mg/kg 0.0050 0.0012 <br /> 1,1,1,2-Tetrachloroethane BQE0698 BQE0698-BLK1 ND mg/kg 0.0050 0.0013 <br /> 1,1,2,2-Tetrachloroethane BQE0698 BQE0698-BLK1 ND mg/kg 0.0050 0.0011 <br /> Tetrachloroethene BQE0698 BQE0698-BLK1 ND mg/kg 0.0050 0.0013 <br /> Toluene BQE0698 BQE0698-BLK1 ND mg/kg 0.0050 0.0012 <br /> BC Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. <br /> Page 32 of 37 <br />