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Laboratories Inc. <br />Environmental Testing Laboratory Since 1949 <br />CB&I Reported: 12/04/2013 12:06 <br />180 Promenade Circle, Suite 320 Project: North County LF, SJ County <br />Sacramento, CA 95834 Project Number. 149270 <br />Project Manager: Sheila Richgels <br />Volatile Organic Analysis (EPA r1lethod 8260) <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 Quals <br />QC Batch ID: 13WK1808 <br />Benzene <br />BWK1808-BS1 <br />LCS <br />25.380 <br />25.000 <br />ug/L <br />102 <br />70-130 <br />Bromodichloromethane <br />BWK1808-BSI <br />LCS <br />30.560 <br />25.000 <br />ug/L <br />122 <br />70-130 <br />Chlorobenzene <br />BWK1808-BSI <br />LCS <br />25.710 <br />25.000 <br />ug/L <br />103 <br />70-130 <br />Chloroethane <br />BWK1808-BS1 <br />LCS <br />24.830 <br />25.000 <br />ug/L <br />99.3 <br />70-130 <br />1,4 -Dichlorobenzene <br />BWK1808-BS1 <br />LCS <br />28.970 <br />25.000 <br />ug/L <br />116 <br />70-130 <br />1,1-Dichloroethane <br />BWK1808-BSI <br />LCS <br />27.230 <br />25.000 <br />ug/L <br />109 <br />70-130 <br />1,1-Dichloroethene <br />BWK1808-BS1 <br />LCS <br />28.080 <br />25.000 <br />ug/L <br />112 <br />70-130 <br />Toluene <br />BWK1808-BS1 <br />LCS <br />26.300 <br />25.000 <br />ug/L <br />105 <br />70-130 <br />Trichloroethene <br />BWK1808-BSI <br />LCS <br />32.430 <br />25.000 <br />ug/L <br />130 <br />70-130 <br />1,2-Dichloroethane-d4 (Surrogate) <br />BWK1808-BS1 <br />LCS <br />11.380 <br />10.000 <br />ug/L <br />114 <br />75-125 <br />Toluene -d8 (Surrogate) <br />BWK1808-BS1 <br />LCS <br />9.9000 <br />10.000 <br />ug/L <br />99.0 <br />80-120 <br />4-Bromofluorobenzene (Surrogate) <br />BWK1808-BS1 <br />LCS <br />10.480 <br />10.000 <br />ug/L <br />105 <br />80-120 <br />The results in this report apply to the samples analyzed in <br />accordance with the chain of custody document. This analytical report must be reproduced in its entirely. <br />All results listed is this report are for the exclusive use of the submitting <br />parry. BC Laboratories, Inc. assumes no responsibility for <br />report alteration, separation, detachment or third party interpretation - <br />4100 Atlas Court <br />Bakersfield, CA 93308 <br />(661) 327.4911 FAX (661) 327-1918 www.bciabs.com Page 23 of 28 <br />