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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 /> Chlorinated Herbicides (EPA Method 8151) <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 Recovery RPD Recovery RPD Lab Quals <br /> 2,4-DB BSH1438 BSH1438-BSI LCS 6.3500 5.4000 3.0 ug/L 118 68-142 <br /> Dinoseb BSH1438 BSH1438-BSI LCS 1.3500 1.2000 0,20 ug/L 112 42-128 <br /> 2,4,5-T BSH1438 BSH1438-BS1 LCS 0.41000 0.60000 0.090 ug/L 68.3 55-146 <br /> 2,4,5-TP(Silvex) BSH1438 BSH1438-BSI LCS 0.36000 0.60000 0.070 ug/L 60.0 67-161 L01 <br /> 2,4-Dichiorophenylacetic acid(Surrogate) BSH1438 BSH1438-BS1 LCS 4.8200 10.000 ug/L 48.2 50-128 L01 <br /> The results in this report apply to the samples analysed in accordance with the chain gfeusiodv document.This analvilcal report must be reproduced in its entirely. <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 65 of 83 <br /> Certifications: California-ELAP Certification Number 1186; Nevada Administrative Code-NAC-446A <br />