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Laboratories, Inc. <br />Environmental Testing Laboratory Since 1949 <br />3eologic Associates Reported: <br />04/12/2012 9:31 <br />11415 West Bernardo Court, Suite 200 Project: <br />Corral Hollow <br />San Diego, CA 92127 Project Number: <br />2011-0115 <br />Project Manager: <br />John Hower <br />Volatile Organic Analysis (EPA Method 8260) <br />Quality Control Report - Precision & Accuracy <br />Control Limits <br />Source Source Spike Percent Percent Lab <br />:onstituent Type Sample ID Result Result Added Units RPD Recovery RPD Recovery Quals <br />QC Batch ID: BVC2348 <br />Used client sample: <br />N <br />1,1-Dichloroethene <br />MS <br />1205363-13 <br />ND <br />24.570 <br />25.000 <br />ug/L <br />98.3 <br />70-130 <br />MSD <br />1205363-13 <br />ND <br />24.200 <br />25.000 <br />ug/L <br />1.5 <br />96.8 <br />20 70-130 <br />Toluene <br />MS <br />1205363-13 <br />ND <br />23.620 <br />25.000 <br />ug/L <br />94.5 <br />70-130 <br />MSD <br />1205363-13 <br />ND <br />23.010 <br />25.000 <br />ug/L <br />2.6 <br />92.0 <br />20 70-130 <br />Trichloroethene <br />MS <br />1205363-13 <br />0.15000 <br />25.860 <br />25.000 <br />ug/L <br />103 <br />70-130 <br />MSD <br />1205363-13 <br />0.15000 <br />25.350 <br />25.000 <br />ug/L <br />2.0 <br />101 <br />20 70-130 <br />1,2-Dichloroethane-d4 (Surrogate) <br />MS <br />1205363-13 <br />ND <br />9.6100 <br />10.000 <br />ug/L <br />96.1 <br />76-114 <br />MSD <br />1205363-13 <br />ND <br />9.8100 <br />10.000 <br />ug/L <br />2.1 <br />98.1 <br />76-114 <br />Toluene -d8 (Surrogate) <br />MS <br />1205363-13 <br />ND <br />9.8400 <br />MOW <br />ug/L <br />98.4 <br />88-110 <br />MSD <br />1205363-13 <br />ND <br />9.9500 <br />10.000 <br />ug/L <br />1.1 <br />99.5 <br />88-110 <br />...... ....... <br />4-Bromofluorobenzene (Surrogate) <br />MS <br />1205363-13 <br />ND <br />9.8300 <br />10.000 <br />ug/L <br />98.3 <br />86-115 <br />MSD <br />1205363-13 <br />ND <br />9.9700 <br />10.000 <br />ug/L <br />1.4 <br />99.7 <br />86-115 <br />I <br />The results in this report apply to the .samples analyzed in accordance with the chain ojcustody 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.bc[abs.com Page 28 of 32 <br />