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-� Laboratories Inc. I1 <br />Environmental Testing Laboratory Since 1949 <br />Shaw Reported: 02/04/2013 14:55 <br />180 Promenade Circle, Suite 320 Project: North County LF, SJ County <br />Sacramento, CA 95834 Project Number. 139874 <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 />1,2-Dichloroethane-d4 (Surrogate) MS <br />1301612-02 <br />ND <br />10.610 <br />10.000 <br />ug/L <br />QC Batch ID: BWA1609 <br />I Used client sample: <br />Y - Description: <br />G -3D, 01/23/2013 10:50 <br />ND <br />10.000 <br />1,1-Dichloroethene <br />MS <br />1301612-02 <br />ND <br />24.680 <br />25.000 <br />ug/L <br />98.7 <br />70-130 <br />ug/L <br />MSD <br />1301612-02 <br />ND <br />23.320 <br />25.000 <br />ug/L 5.7 <br />93.3 <br />20 70-130 <br />Toluene <br />MS <br />1301612-02 <br />ND <br />26.230 <br />25.000 <br />ug/L <br />105 <br />70-130 <br />MSD <br />1301612-02 <br />ND <br />25.200 <br />25.000 <br />ug/L 4.0 <br />101 <br />20 70-130 <br />Trichloroethene <br />MS <br />1301612-02 <br />ND <br />23.540 <br />25.000 <br />ug/L <br />94.2 <br />70-130 <br />MSD <br />1301612-02 <br />ND <br />23.570 <br />25.000 <br />ug/L 0.1 <br />94.3 <br />20 70-130 <br />1,2-Dichloroethane-d4 (Surrogate) MS <br />1301612-02 <br />ND <br />10.610 <br />10.000 <br />ug/L <br />106 <br />75-125 <br />MSD <br />1301612-02 <br />ND <br />10.000 <br />10.000 <br />ug/L <br />5.9 100 <br />75-125 <br />Toluene -d8 (Surrogate) MS <br />1301612-02 <br />ND <br />9.9900 <br />10.000 <br />ug/L <br />99.9 <br />80-120 <br />MSD <br />1301612-02 <br />ND <br />9.8700 <br />10.000 <br />ug/L <br />1.2 98.7 <br />80-120 <br />4-Bromofluorobenzene (Surrogate) MS 1301612-02 ND 10.380 10.000 ug/L 104 80-120 <br />MSD 1301612-02 ND 10.240 10.000 ug/L 1.4 102 80-120 <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 m 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 36 of 40 <br />• <br />0 <br />