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:W Laboratories, Inc. .�I. <br /> Environmental Testing Laboratory Since 1949 <br /> haw Reported: 02/11/2013 10:54 <br /> 180 Promenade Circle,Suite 320 Project: Corral Hollow LF,SJ County <br /> Sacramento,CA 95834 Project Number. 139881 <br /> Project Manager: Sheila Richgels <br /> Volatile Organic Analysis (EPA Method ) <br /> Quality Control Report - Laboratory Control Sample <br /> Control Limits <br /> Spike Percent Percent Lab <br /> Constituent QC Sample ID Type Result Level Units Recovery RPD Recovery RPD Quaffs <br /> QC Batch ID: BWA1845 <br /> Benzene BWA1845-BSI LCS 22.150 25.000 ug/L 88.6 70-130 <br /> Bromodichloromethane BWA1845-BS1 LCS 28.900 25.000 ug/L 116 70-130 <br /> Chlorobenzene BWA1845-BS1 LCS 22.780 25.000 ug/L 91.1 70-130 <br /> Chloroethane BWA1845-BS1 LCS 27.600 25.000 ug/L 110 70-130 <br /> 1,4-Dichlorobenzene BWA1845-BS1 LCS 22.470 25.000 ug/L 89.9 70-130 <br /> 1,1-Dichloroethane BWA1845-BS1 LCS 22.000 25.000 ug/L 88.0 70-130 <br /> 1,1-Dichloroethene BWA1845-BS1 LCS 23.290 25.000 ug/L 93.2 70-130 <br /> Toluene BWA1845-BS1 LCS 23.330 25.000 ug/L 93.3 70-130 <br /> Trichloroethene BWA1845-BS1 LCS 26.150 25.000 ug/L 105 70-130 <br /> 1,2-Dichloroethane-d4(Surrogate) BWA1845-BS1 LCS 9.7700 10.000 ug/L 97.7 75-125 <br /> Toluene-d8(Surrogate) BWA1845-BSI LCS 9.8600 10.000 ug/L 98.6 80-120 <br /> romofluorobenzene(Surrogate) BWA1845-BS1 LCS 9.7400 10.000 ug/L 97.4 80-120 <br /> The results in this report apple to the samples analyzed in accordance with the chain of custodv 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.bciabs.com Page 53 of 58 <br />