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Laboratories Inc. <br />En ironmental Testing LaboratorySince 1949 <br />Geologic Associates Reported: 10/25/2011 16:38 <br />11415 West Bernardo Ct, Ste 200 Project: Conal Hollow EMP <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 <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: BUJ1613 <br />Used <br />client sample: <br />N <br />Benzene <br />MS <br />1117350-03 <br />ND <br />24.690 <br />25.000 <br />ug/L <br />98.8 <br />70-130 <br />MSD <br />1117350-03 <br />ND <br />26.020 <br />25.000 <br />ug/L <br />5.2 <br />104 <br />20 <br />70-130 <br />Bromodichloromethane <br />MS <br />1117350-03 <br />ND <br />28.020 <br />25.000 <br />ug/L <br />112 <br />70-130 <br />MSD <br />1117350-03 <br />ND <br />29.080 <br />25.000 <br />ug/L <br />3.7 <br />116 <br />20 <br />70-130 <br />Chlorobenzene <br />MS <br />1117350-03 <br />ND <br />24.980 <br />25.000 <br />ug/L <br />99.9 <br />70-130 <br />MSD <br />1117350-03 <br />ND <br />25.270 <br />25.000 <br />ug/L <br />1.2 <br />101 <br />20 <br />70 - 130 <br />Chloroethane <br />MS <br />1117350-03 <br />ND <br />24.120 <br />25.000 <br />ug/L <br />96.5 <br />70-130 <br />MSD <br />1117350-03 <br />ND <br />25.600 <br />25.000 <br />ug/L <br />6.0 <br />102 <br />20 <br />70-130 <br />1,4 -Dichlorobenzene <br />MS <br />1117350-03 <br />ND <br />23.180 <br />25.000 <br />ug/L <br />92.7 <br />70-130 <br />MSD <br />1117350-03 <br />ND <br />23.100 <br />25.000 <br />ug/L <br />0.3 <br />92.4 <br />20 <br />70-130 <br />1,1-Dichloroethane <br />MS <br />1117350-03 <br />ND <br />22.270 <br />25.000 <br />ug/L <br />89.1 <br />70-130 <br />MSD <br />1117350-03 <br />ND <br />23.710 <br />25.000 <br />ug/L <br />6.3 <br />94.8 <br />20 <br />70-130 <br />1,1-Dich1oroethene <br />MS <br />1117350-03 <br />ND <br />20.230 <br />25.000 <br />ug/L <br />80.9 <br />70-130 <br />MSD <br />1117350-03 <br />ND <br />21.740 <br />25.000 <br />ug/L <br />7.2 <br />87.0 <br />20 <br />70-130 <br />Toluene <br />MS <br />1117350-03 <br />ND <br />25.260 <br />25.000 <br />ug/L <br />101 <br />70-130 <br />MSD <br />1117350-03 <br />ND <br />25.910 <br />25.000 <br />ug/L <br />2.5 <br />104 <br />20 <br />70-130 <br />Trichloroethene <br />MS <br />1117350-03 <br />ND <br />23.640 <br />25.000 <br />ug/L <br />94.6 <br />70-130 <br />MSD <br />1117350-03 <br />ND <br />24.540 <br />25.000 <br />ug/L <br />3.7 <br />98.2 <br />20 <br />70-130 <br />1,2 Dichloroethane-d4 (Surrogate) <br />MS <br />1117350-03 <br />ND <br />9.7400 <br />10.000 <br />ug/L <br />97.4 <br />76-114 <br />MSD <br />1117350-03 <br />ND <br />10.310 <br />10.000 <br />ug/L <br />5.7 <br />103 <br />76-114 <br />Toluene -d8 (Surrogate) <br />MS <br />1117350-03 <br />ND <br />10.140 <br />10.000 <br />ug/L <br />101 <br />88-110 <br />MSD <br />1117350-03 <br />ND <br />10.200 <br />10.000 <br />ug/L <br />0.6 <br />102 <br />88-110 <br />4-Bromofluorobenzene (Surrogate) <br />MS <br />1117350-03 <br />ND <br />9.4300 <br />10.000 <br />ug/L <br />94.3 <br />86-115 <br />MSD <br />1117350-03 <br />ND <br />9.4800 <br />10.000 <br />ug/L <br />0.5 <br />94.8 <br />86-111 <br />The results in this report apply to the samples analyzed in accordance with the chain of custody 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.bclabs.com Page 13 of 14 <br />