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Laboratories, Inc. <br /> Environmental Testing Laboratory Since 1949 <br /> Herst Associates Project: NCYC Reported: 07/21/2008 16:37 <br /> 4630 South Highway 94 North Outer Road Project Number: [none] <br /> Saint Charles, MO 63304 Project Manager. David Vasbinder <br /> Volatile Organic Analysis (EPA Method 8260) <br /> Quality Control Report - Method Blank Analysis <br /> Constituent Batch ID QC Sample 10 MB Result Units PQL MDL Lab�Quals <br /> Benzene BRG1228 BRG1228-BLKI NO ug/L 0.50 0.18 <br /> BromochloromethaneBRG1228 BRG1228-BLKI NO ug/L 0.50 0.35 <br /> ............ ------ <br /> Bromodichloromethane BRG1228 BRG1228-BLK1 NO ug/L 0.50 0.30 <br /> Bromciform BRG1228 BRG1228-BLK1 NO ug/L OM 0.24 <br /> Brornomethane BRG1228 BRG1228-BLKI NO ug/L 1.0 0,21 <br /> Carbon tetrachloride BRG1226 BRG1228-BLKI NO ug/L 0.50 <br /> 0.20 <br /> Chlorobenzene BRG1228 BRG1228-BLKI NO ug/L 0.50 0.14 <br /> Chloroethane BRG1228 BRG1228-BLK1 NO ug/L 0.50 0.25 <br /> Chloroform BRG1228 BRG1228-BLK1 NO ug/L 0.50 0.23 <br /> ChloromethaneBRG1228 BRG1228-BLK1 NO ug/L 0.50 0.20 <br /> ------------------------ <br /> Dibromochloromethane BRG1228 BRG1228-BLKI NO ug/L 0.50 0.23 <br /> ............. <br /> 1,2-Dibromo-3-chloropropane BRG1228 BRG1228-BLKI NO ug/L 1.0 0.46 <br /> .......... <br /> 0.29 <br /> 1,2-Dibromoethane BRG1228 BRG1228-BLKI NO ug/L 0.50 <br /> Dibromomethane BRG1228 BRG1228-BLK1 NO ug/L 0.50 0.37 <br /> -------------- <br /> 1,2-Dichlorobenzene BRG1228 BRG1 228-BLK1 NO ug/L 0.50 0.15 <br /> ------------- <br /> 1,3-Dichlorobenzene BRG1228 BRG1228-BLK1 NO ug/L 0.50 0.15 <br /> 0.16 <br /> 1,4-Dichlorobenzene BRG1228 BRG1228-BLK1 NO ug/L 0.50 <br /> Dichlorodifluoromethane BRG1228 BRG1228-BLKI NO ug/L 0.50 022 <br /> 1,1-Dichloroethane BRG1228 BRG1228-BLKI NO ug/L 0.50 0.13 <br /> 1,2-Dichloroethane BRG1228 BRG1228-BLK1 NO ug/L 0.50 0.24 <br /> 1,1-Dichloroethene BRG1228 BRG1228-BLKI NO ug/L 0.50 0.23 <br /> cis-1,2-Dichloroathene BRG1228 BRG1228-BLKI NO ug/L 0.50 0.32. <br /> trans-1,2-Dichloroethene BRG1228 BRG1228-BLK1 NO ug/L Mo 0.14 <br /> ------------- <br /> 1,2-Dichloropropane BRG1228 BRG1928-BLKI NO ug/L 050 0..16.......--------- <br /> The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced is its entirety. <br /> All results fisted in this report are for the exclusive use of the submitting Darty. BC Laboratories,Inc.assumes no responsibility for rerion alteration,separation,detachment or d6rd party interpretation. <br /> 0-1-r-W IA oiinA IAA11q97-AQ1I GAY IAA1)1?7-IAIA wwwbrlabs,com Page 33 of 36 <br />