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— Laboratories, Inc. <br />Environmental Testing Laboratory Since 1949 <br />aw <br />180 Promenade Circle, Suite 320 <br />Sacramento, CA 95834 <br />4 <br />Reported: <br />Project: <br />Project Number. <br />Project Manager: <br />02/04/2013 14:55 <br />North County LF, SJ County <br />139874 <br />Sheila Richgels <br />Volatile Organic Analysis (EPA etho 8260) <br />Quality Control Repo - Method Blank Analysis <br />Constituent <br />QC Sample ID <br />MB Result <br />Units <br />PQL MDL Lab Quals <br />QC Batch ID: BWA1609 <br />Carbon disulfide <br />BWA1609-BLK1 <br />ND <br />ug/L <br />1.0 0.38 <br />trans-l,4-Dichloro-2-butene <br />BWA1609-BLK1 <br />ND <br />ug/L. <br />5.0 1.4 <br />2-Hexanone <br />BWA1609-BLK1 <br />ND <br />ug/L. <br />10 3.4 <br />Methyl ethyl ketone <br />BWA1609-BLK1 <br />ND <br />ug/L <br />10 2.5 <br />Methyl iodide <br />BWA1609-BLK1 <br />ND <br />ug/L <br />2.0 0.47 <br />Methyl isobutyl ketone <br />BWA1609-BLK1 <br />ND <br />ug/L <br />10 2.1 <br />Vinyl acetate <br />BWA1609-BLK1 <br />ND <br />ug/L. <br />10 1.8 <br />1,2-Dichloroethane-d4 (Surrogate) <br />BWA1609-BLK1 <br />112 <br />% <br />75 - 125 (LCL - UCL) <br />Toluene -d8 (Surrogate) <br />BWA1609-BLK1 <br />99.0 <br />% <br />80 - 120 (LCL - UCL) <br />4-Bromofluorobenzene (Surrogate) <br />BWA1609-BLK1 <br />91.6 <br />% <br />80 - 120 (LCL - UCL) <br />n <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 aheration, separation, detachment or third party interpretation <br />4100 Atlas Court Bakersfield, CA 93308 (661) 32714911 FAX (661) 327-1918 www.bdabs.com Page 33 of 40 <br />