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Laboratories Inc. <br /> Environmental Testing Laboratory Since 1949 <br /> W Reported: 01/25/2012 15:04 <br /> 180 Promenade Circle,Suite 320 Project: North County LF,SJ County <br /> Sacramento,CA 95834 Project Number: 139874 <br /> Project Manager: Sheila Richgels <br /> Volatile Organic Analysis (EPA Method 8260) <br /> Quality Control Report - Method Blank Analysis <br /> Constituent QC Sample ID MB Result Units PQL MDL Lab Quals <br /> QC Batch ID: BVA0792 <br /> Carbon disulfide BVA0792-BLK1 ND ug/L 1.0 0.38 <br /> trans-1,4-Dichloro-2-butene BVA0792-BLK1 ND ug/L 5.0 1.4 <br /> 2-Hexanone BVA0792-BLK1 ND ug/L 10 3.4 <br /> Methyl ethyl ketone BVA0792-BLK1 ND ug/L 10 2.5 <br /> Methyl iodide BVA0792-BLK1 ND ug/L 2.0 0.47 <br /> Methyl isobutyl ketone BVA0792-BLK1 ND ug/L 10 2.1 <br /> Vinyl acetate BVA0792-BLK1 ND ug/L 10 1.8 <br /> 1,2-Dichloroethane-d4(Surrogate) BVA0792-BLK1 92.3 % 76-114 (LCL-UCL) <br /> Toluene-d8(Surrogate) BVA0792-BLK1 99.3 % 88-110 (LCL-UCL) <br /> 4-Bromofluorobenzene(Surrogate) BVA0792-BLK1 96.7 % 86-115 (LCL-UCL) <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. <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bclabs.com Page 32 of 40 <br />