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Laboratories Inc. . <br />Environmental Testing Laboratory Since 1949 <br />Shaw Reported: 01/31/2012 16:25 <br />180 Promenade Circle, Suite 320 Project: Corral Hollow LF, SJ County <br />Sacramento, CA 95834 Project Number: 139881 <br />Project Manager: Sheila Richgels <br />Volatile Organic Analysis (EPA Method 8260) <br />Quality Control Report - Precision & Accuracy <br />Control Limits <br />Source Source Spike Percent Percent. Lab <br />Constituent Type Sample ID Result Result Added Units RPD Recovery RPD Recovery Quals <br />QC Batch ID: BVA1761 <br />Used client sample: N <br />Benzene <br />MS <br />120125401 <br />ND <br />25.870 <br />25.000 <br />ug/L <br />103 <br />70-130 <br />MSD <br />1201254-01 <br />ND <br />25.190 <br />25.000 <br />ug/L <br />2.7 <br />101 <br />20 <br />70-130 <br />Bromodichloromethane <br />MS <br />120125401 <br />ND <br />28.490 <br />25.000 <br />ug/L <br />114 <br />70-130 <br />MSD <br />120125401 <br />ND <br />28.930 <br />25.000 <br />ug/L <br />1.5 <br />116 <br />20 <br />70-130 <br />Chlorobenzene <br />MS <br />1201254-01 <br />ND <br />25.040 <br />25.000 <br />ug/L <br />100 <br />70-130 <br />MSD <br />120125401 <br />ND <br />24.590 <br />25.000 <br />ug/L <br />1.8 <br />98.4 <br />20 <br />70-130 <br />Chloroethane <br />MS <br />120125401 <br />ND <br />27.140 <br />25.000 <br />ug/L <br />109 <br />70-130 <br />MSD <br />1201254-01 <br />ND <br />26.540 <br />25.000 <br />ug/L <br />2.2 <br />106 <br />20 <br />70-130 <br />1,4 -Dichlorobenzene <br />MS <br />120125401 <br />ND <br />25.870 <br />25.000 <br />ug/L <br />103 <br />70-130 <br />MSD <br />1201254-01 <br />ND <br />25.510 <br />25.000 <br />ug/L <br />1.4 <br />102 <br />20 <br />70-130 <br />1,1-Dichloroethane <br />MS <br />120125401 <br />ND <br />26.410 <br />25.000 <br />ug/L <br />106 <br />70-130 <br />MSD <br />120125401 <br />ND <br />26.240 <br />25.000 <br />ug/L <br />0.6 <br />105 <br />20 <br />70-130 <br />1, 1 -Dichloroethene <br />MS <br />120125401 <br />ND <br />27.680 <br />25.000 <br />ug/L <br />111 <br />70-130 <br />MSD <br />1201254-01 <br />ND <br />27.190 <br />25.000 <br />ug/L <br />1.8 <br />109 <br />20 <br />70-130 <br />Toluene <br />MS <br />120125401 <br />ND <br />25.720 <br />25.000 <br />ug/L <br />103 <br />70-130 <br />MSD <br />1201254-01 <br />ND <br />24.920 <br />25.000 <br />ug/L <br />3.2 <br />99.7 <br />20 <br />70-130 <br />Trichloroethene <br />MS <br />120125401 <br />ND <br />26.550 <br />25.000 <br />ug/L <br />106 <br />70-130 <br />MSD <br />120125401 <br />ND <br />26.020 <br />25.000 <br />ug/L <br />2.0 <br />104 <br />20 <br />70-130 <br />1,2-Dichloroethane-d4 (Surrogate) <br />MS <br />1201254-01 <br />ND <br />10.110 <br />10.000 <br />ug/L <br />101 <br />76-114 <br />MSD <br />120125401 <br />ND <br />10.370 <br />10.000 <br />ug/L <br />2.5 <br />104 <br />76-114 <br />Toluene -d8 (Surrogate) <br />MS <br />1201254-01 <br />ND <br />10.010 <br />10.000 <br />ug/L <br />100 <br />88-110 <br />MSD <br />120125401 <br />ND <br />9.9200 <br />10.000 <br />ug/L <br />0.9 <br />99.2 <br />88-110 <br />4-Bromofluorobenzene (Surrogate) <br />MS <br />1201254-01 <br />ND <br />9.8500 <br />10.000 <br />ug/L <br />98.5 <br />86-115 <br />MSD <br />120125401 <br />ND <br />10.100 <br />10.000 <br />ug/L <br />2.5 <br />101 <br />86-115 <br />1 <br />1 <br />The results in this report apply to <br />the samples analyzed in accordance with <br />the chain <br />of custody document. This analytical report must be reproduced in its entirety. <br />All results listed in this report are for the exclusive <br />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 <br />(661) 327-4911 FAX (661) 327-1918 <br />www.bciabs.com <br />Page 41 of 45 <br />