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i <br /> Labo�ato�ie� It�c. <br /> Environmen#al 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 Pesticide Analysis (EPA Method 8141) <br /> Quality Control Report - Laboratory Control Sample <br /> Control Limits <br /> Spike Percent Percent <br /> Constituent Batch ID QC Sample ID QC:Type Result Level PQL Units Recovey RPD Recovery RPD Lab Quals <br /> Chlorpyrifos BRL0894 BRL0894-BS1 LCs 0.41000 1.0000 0.20 ug/L 41.0 31-142 <br /> Diazinon BRL0894 BRL0894-BSI LCS 0.39000 1.0000 0.20 ug/L 39.0 53-137 L01 <br /> Methyl parathion BRL0894 BRL0894-BS1 LCS 0.31500 1.0000 0.20 ug/L 31.5 24-148 <br /> Triphenylphosphate(Surrogate) BRL0894 BRL0894 BSI LCS 2.5000 2.5000 D.20 ug/L 100 51-141 <br /> The results in this report apply to the.samples analyed 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. <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bclabs.com Page 32 of 54 <br /> Certifications: California-ELAP Certification Number 1186; Nevada Administrative Code-NAC-445A <br />