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Laboratories, Inc. <br /> Environmental Testing Laboratory Since 1949 <br /> Shaw Project: Foothill LF,SJ County-5 year Reported: 09/03/2009 16:26 <br /> 1326 North Market Boulevard Project Number: 124591 <br /> Sacramento,CA 95834 Project Manager: Sheila Richgels <br /> Organo-Phosphorus Pesticide Analysis (EPA Method 8141) <br /> Quality Control Report- Precision & Accuracy <br /> Control Limits <br /> Source Source Spike Percent Percent <br /> Constituent Batch ID QC Sample Type Sample ID Result Result Added Units RPD Recovery RPD Recovery Lab Quals <br /> Methyl parathion BSH1419 Matrix Spike 0909743-42 ND 0,42000 0.50000 ug/L 84.0 43-136 <br /> Matrix Spike Duplicate 0909743-42 ND 0.39500 0.50000 ug/L 6.1 79.0 30 43-136 <br /> Triphenylphosphate(Surrogate) SSH1419 Matrix Spike 0909743-42 ND 2.4650 2.5000 ug/L 98.6 55-132 <br /> Matrix Spike Duplicate 0909743-42 ND 2,3700 2.5000 ug/L 94.8 55-132 <br /> The results in this report apply to the samples analysed 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 54 of 83 <br /> Certifications: California-ELAP Cert cation Num186; Nevada Administrative Code-NAC-445A <br />