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Laboratories Inc. <br /> Environmental Testing Laboratory Since 1949 <br /> Herst Associates Project: NCYC Reported: 07/2112008 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 ( A Method 8260) <br /> Quality Control Report - Method Blank Analysis <br /> Constituent Batch ID QC Sample ID MB Result Units PQL MDL Lab Qualls <br /> 1,3-Dichloropropane BRG1228 BRG1228-BLK1 ND ug/L 0.50 0.095 <br /> trans-1,3-Dichloropropene BRG1228 BRG1228-BLK1 ND ug/L 0.50 0.13 <br /> Ethylbenzene BRG1228 BRG1228-BLK1 ND ug/L 0.50 0.16 <br /> Hexachlorobutadiene BRG1228 BRG1228-BLKI ND ug/L 0.50 0.26 <br /> Methylene chloride BRG1228 BRG1228-BLK1 ND ug/L 1.0 0.27 <br /> Methyl t-butyl ether BRG1228 BRG1228-BLK1 ND ug/L 0.50 <br /> 0.22 <br /> Naphthalene BRG1228 BRG1228-BLK1 ND ug/L 0.50 0.30 <br /> Styrene BRG1228 BRG1228-BLK1 ND ug/L 0.50 0.18 <br /> 1,1,2,2-Tetrachloroethane BRG1228 BRG1228-BLK1 ND ug/L 0.50 0.28 <br /> Tetrachloroethene BRG1228 BRG1228-BLK1 ND ug/L 0.50 0.28 <br /> Toluene BRG1228 BRG1228-BLK1 ND ug/L 0.50 0.12 <br /> 1,2,4-TrichlorobenzeneBRG1228 BRG1228-BLK1 ND ug/L 0.50 0.31 <br /> 1,1,1 Trichloroethane BRG1228 BRG1228-BLK1 ND ug/L 0.50 0.18 <br /> 1,1,2-Trichloroethane BRG1228 BRG1228-BLK1 ND ug/L 0.50 0.44 <br /> ...-...... -_ _ ----------- <br /> Trichloroethene BRG1228 BRG1228-BLK1 ND ug/L 0.50 0.16 <br /> Trichlorofluoromethane BRG1228 BRG1228-BLK1 ND ug/L 0.50 0.22 <br /> 1,2,3-Trichloropropane BRG1228 BRG1228-BLK1 ND ug/L 1.0 0.43 <br /> 0.16 <br /> Vinyl chloride BRG1228 BRG1228-BLK1 ND ug/L 0.50 <br /> Total Xylenes BRG1228 BRG1228-BLK1 ND ug/L 1.0 <br /> 0.53 <br /> Acetone BRG1228 BRG1228-BLK1 ND ug/L 10 7.4 <br /> Acrylonitrile BRG1228 BRG1228-BLK1 ND ug/L 5.0 1.5 <br /> t-Amyl Methyl etherBRG1228 BRG1228-BLK1 ND ug/L 0.50 0,19 <br /> _ ..-- -- - <br /> t-Butyl alcohol BRG1228 BRG1228-BLK1 ND ug/L 10 9.2 <br /> Carbon disulfideBRG1228 BRG1228-BLK1 ND ug/L 1.0 0.40 <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 in its entirety. <br /> All results listed in this report are for the exclusive use of the submitting party. BC Laboratories,Inc.assumes no responsibility for report alteration,separation,detachment or third party interpretation. Page 34 of 36 <br /> ra oiznn frR11 477-AQ91 Fax(661)377-1918 www.bclabs.com <br />