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Laboratories Inc. <br /> Environmental Testing Laboratory Since 1949 <br /> acv Reported: 02/18/2013 14:19 <br /> 180 Promenade Circle,Suite 320 Project: Harney Lane,S.J.County <br /> Sacramento,CA 95834 Project Number. 139866-Annual <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: BWBO147 <br /> Acrylonitrile BWB0147-BLK1 ND ug/L 5.0 1.2 <br /> Allyl chloride BWBO147-BLK1 ND ug/L 5.0 0.80 <br /> t-Amyl Methyl ether BWB0147-BLK1 ND ug/L 0.50 0.25 <br /> t-Butyl alcohol BWBO147-BLK1 ND ug/L 10 9.4 <br /> Carbon disulfide BWB0147-BLK1 ND ug/L 1.0 0.38 <br /> Chloroprene BWB0147-BLK1 ND ug/L 5.0 0.37 <br /> trans-l,4-Dichloro-2-butene BWBO147-BLK1 ND ug/L 5.0 1.4 <br /> Diisopropyl ether BWBO147-BLK1 ND ug/L 0.50 0.23 <br /> Hexachloroethane BWBO147-BLK1 ND ug/L 0.50 0.16 <br /> 2-Hexanone BWB0147-BLK1 ND ug/L 10 3.4 <br /> 1sobutanol BWB0147-BLK1 ND ug/L 20 7.7 <br /> W�yl <br /> crylonitrile BWB0147-BLK1 ND ug/L 10 1.7 <br /> ethyl ketone BWB0147-BLK1 ND ug/L 10 2.5 <br /> Methyl iodide BWB0147-BLK1 ND ug/L 2.0 0.47 <br /> Methyl isobutyl ketone BWBO147-BLK1 ND ug/L 10 2.1 <br /> Methyl methacrylate BWB0147-BLK1 ND ug/L 5.0 1.5 <br /> Propionitrile BWB0147-BLK1 ND ug/L 20 4.2 <br /> 1,2-Dichloroethane-d4(Surrogate) BWB0147-BLK1 112 % 75-125 (LCL-UCL) <br /> Toluene-d8(Surrogate) BWB0147-BLK1 98.8 % 80-120 (LCL-UCL) <br /> 4-Bromofluorobenzene(Surrogate) BWB0147-BLK1 99.1 % 80-120 (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 41 of 49 <br />