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Laboratories Inc. <br />Environmental Testing laboratory Since 1949 <br />3eologic Associates Reported: 03/05/2012 14:57 <br />11415 West Bernardo Court, Suite 200 Project: Corral Hollow <br />San Diego, CA 92127 Project Number: 2011-0115 <br />Project Manager: John Hower <br />Volatile Organic Analysis (EPA Method 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 />t QC Batch ID: BVC0112 <br />, <br />Benzene <br />BVC0112-BS1 <br />LCS <br />27.110 <br />25.000 <br />ug/L <br />108 <br />70-130 <br />Bromodichloromethane <br />BVC0112-BS1 <br />LCS <br />30.510 <br />25.000 <br />ug/L <br />122 <br />70-130 <br />Chlorobenzene <br />BVC0112-BSI <br />LCS <br />23.460 <br />25.000 <br />ug/L <br />93.8 <br />70-130 <br />Chloroethane <br />BVC0112-BS1 <br />LCS <br />27.370 <br />25.000 <br />ug/L <br />109 <br />70-130 <br />1,4 -Dichlorobenzene <br />BVC0112-BS1 <br />LCS <br />22.610 <br />25.000 <br />ug/L <br />90.4 <br />70-130 <br />1,1-Dichloroethane <br />BVC0112-BSI <br />LCS <br />27.870 <br />25.000 <br />ug/L <br />111 <br />70-130 <br />1,1-Dichloroethene <br />BVC0112-BSI <br />LCS <br />29.090 <br />25.000 <br />ug/L <br />116 <br />70-130 <br />Toluene <br />BVC0112-BS1 <br />LCS <br />24.990 <br />25.000 <br />ug/L <br />100 <br />70-130 <br />Trichloroethene <br />BVC0112-BS1 <br />LCS <br />27.550 <br />25.000 <br />ug/L <br />110 <br />70-130 <br />1,2-Dichloroethane-d4 (Surrogate) <br />BVC0112-BS1 <br />LCS <br />9.9900 <br />10.000 <br />ug/L <br />99.9 <br />76-114 <br />Toluene -d8 (Surrogate) <br />BVC0112-BS1 <br />LCS <br />10.200 <br />10.000 <br />ug/L <br />102 <br />88-110 <br />4-Bromofluorobenzene (Surrogate) <br />BVC0112-BS1 <br />LCS <br />10.060 <br />10.000 <br />ug/L <br />101 <br />86-115 <br />The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must he 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 16 of 18 <br />