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Laboratories Inc. <br /> AMWEnvironmental Testing Laboratory Since 1949 <br /> Herst Associates Project: Austin Road/NCYCC Drilling Reported: 12/19/2008 13:17 <br /> 4630 South Highway 94 North Outer Road Project Number: [none] <br /> Saint Charles, MO 63304 Project Manager. David Vasbinder <br /> Organo-Phosphorus PesticideIsis (EPA Method 8141) <br /> Quality Control Repo - Method Blank Analysis <br /> Constituent Batch ID QC Sample ID MB Result Units PQL MDL Lab Qualls <br /> ChlorpyrifosBRL0894 BRL0894-BLK1 ND ug/L 0.20 0.024 <br /> ----------- <br /> Diazinon <br /> ------._Diazinon BRL0894 BRL0894-BLK1 ND ug/L 0.20 0.044 <br /> Dimethoate BRL0894 BRL0894-BLK1 ND ug/L 0.20 0.075 <br /> DisulfotonBRL0894 BRL0894-BLK1 ND ug/L 0.50 0. <br /> 039 <br /> Ethion BRL0894 BRL0894-BLK1 ND ug/L 0.20 0.032 <br /> Methyl parathion BRL0894 BRL0894-BLK1 ND ug/L 0.20 0.07 <br /> Phorate BRL0894 BRL0894-BLK1 ND ug/L 0.20 0.041 <br /> Thionazin BRL0894 BRL0894-BLK1 ND ug/L 0.20 0.041 <br /> Triphenylphosphate(Surrogate) BRL0894 BRL0894-BLK1 93.6 % 55-132 (LCL-UCL) <br /> The results in this report apply to the.samples analyzed m accordance with the chain of custody document.This analytical report must he reproduced in its entirety. <br /> All resuits 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. <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bclabs.com Page 40 of 54 <br /> Certifications: California-ELAP Certification Number 1186; Nevada Administrative Code-NAC-445A <br />