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i 40 <br />Laboratories, Inc. <br />Environmental Testing Laboratory Since 1949 <br />3eologic Associates Reported: 11/07/2011 13:33 <br />11415 West Bemardo Ct, Ste 200 Project: Corral Hollow <br />San Diego, CA 92127 Project Number. 2011-0115 <br />Project Manager: John Hower <br />Volatile• • •• 1': <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: BUK0331 <br />J Used client sample: <br />N <br />Benzene <br />MS <br />1117910-01 <br />ND <br />25.890 <br />25.000 <br />ug/L <br />104 <br />70-130 <br />MSD <br />1117910-01 <br />ND <br />25.160 <br />25.000 <br />ug/L <br />2.9 <br />101 <br />20 <br />70-130 <br />Bromodichloromethane <br />MS <br />1117910-01 <br />ND <br />27.690 <br />25.000 <br />ug/L <br />111 <br />70-130 <br />MSD <br />1117910-01 <br />ND <br />27.040 <br />25.000 <br />ug/L <br />2.4 <br />108 <br />20 <br />70-130 <br />Chlorobenzene <br />MS <br />1117910-01 <br />ND <br />26.300 <br />25.000 <br />ug/L <br />105 <br />70-130 <br />MSD <br />1117910-01 <br />ND <br />26.380 <br />25.000 <br />ug/L <br />0.3 <br />106 <br />20 <br />70-130 <br />Chloroethane <br />MS <br />1117910-01 <br />ND <br />25.890 <br />25.000 <br />ug/L <br />104 <br />70-130 <br />MSD <br />1117910-01 <br />ND <br />24.930 <br />25.000 <br />ug/L <br />3.8 <br />99.7 <br />20 <br />70-130 <br />1,4 -Dichlorobenzene <br />MS <br />1117910-01 <br />ND <br />25.190 <br />25.000 <br />ug/L <br />101 <br />70-130 <br />MSD <br />1117910-01 <br />ND <br />25.570 <br />25.000 <br />ug/L <br />1.5 <br />102 <br />20 <br />70-130 <br />1,1-Dichloroethane <br />MS <br />1117910-01 <br />ND <br />26.650 <br />25.000 <br />ug/L <br />107 <br />70-130 <br />MSD <br />1117910-01 <br />ND <br />25.900 <br />25.000 <br />ug/L <br />2.9 <br />104 <br />20 <br />70-130 <br />1,1-Dichloroethene <br />MS <br />1117910-01 <br />ND <br />28.490 <br />25.000 <br />ug/L <br />114 <br />70-130 <br />MSD <br />1117910-01 <br />ND <br />27.590 <br />25.000 <br />ug/L <br />3.2 <br />110 <br />20 <br />70-130 <br />Toluene <br />MS <br />1117910-01 <br />ND <br />26.270 <br />25.000 <br />ug/L <br />105 <br />70-130 <br />MSD <br />1117910-01 <br />ND <br />25.500 <br />25.000 <br />ug/L <br />3.0 <br />102 <br />20 <br />70-130 <br />Trichloroethene <br />MS <br />1117910-01 <br />ND <br />27.210 <br />25.000 <br />ug/L <br />109 <br />70-130 <br />MSD <br />1117910-01 <br />ND <br />26.610 <br />25.000 <br />ug/L <br />2.2 <br />106 <br />20 <br />70-130 <br />1,2-Dichloroethane-d4 (Surrogate) <br />MS <br />1117910-01 <br />ND <br />10.030 <br />10.000 <br />ug/L <br />100 <br />76-114 <br />MSD <br />1117910-01 <br />ND <br />10.000 <br />10.000 <br />ug/L <br />0.3 <br />100 <br />76-114 <br />Toluene -d8 (Surrogate) <br />MS <br />1117910-01 <br />ND <br />10.020 <br />10.000 <br />ug/L <br />100 <br />88-110 <br />MSD <br />1117910-01 <br />ND <br />10.010 <br />10.000 <br />ug/L <br />0.1 <br />100 <br />88-110 <br />4-Bromofluorobenzene (Surrogate) <br />MS <br />1117910-01 <br />ND <br />10.100 <br />10.000 <br />ug/L <br />101 <br />86-115 <br />MSD <br />1117910-01 <br />ND <br />10.430 <br />10.000 <br />ug/L <br />3.2 <br />104 <br />"6-115 <br />The results in this report apply to the samples analyzed in accordance with the chain ojcustody document. This analytical report must be reproduced in its entirely. <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 17 of 18 <br />