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Laboratories Inc.-W . <br /> Environmental Testing Laboratory Since 1949 <br /> r <br /> Reported: 08/16/2012 15:55 <br /> Promenade Circle,Suite 320 Project: North County LF,SJ County <br /> Sacramento,CA 95834 Project Number. [none] <br /> Project Manager: Sheila Richgels <br /> Volatile Organic Analysis (EPA Method 8260) <br /> Quality Control Repo - 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: BVH6180 Used client sample: N <br /> Benzene MS 1214200-01 ND 26.740 25.000 ug/L 107 70-130 <br /> MSD 1214200-01 ND 26.050 25.000 ug/L 2.6 104 20 70-130 <br /> Bromodichloromethane MS 1214200-01 ND 24.180 25.000 ug/L 96.7 70-130 <br /> MSD 1214200-01 ND 23.390 25.000 ug/L 3.3 93.6 20 70-130 <br /> Chlorobenzene MS 1214200-01 ND 24.560 25.000 ug/L 98.2 70-130 <br /> MSD 1214200-01 ND 23.930 25.000 ug/L 2.6 95.7 20 70-130 <br /> Chloroethane MS 1214200-01 ND 25.640 25.000 ug/L 103 70-130 <br /> MSD 1214200-01 ND 25.370 25.000 ug/L 1.1 101 20 70-130 <br /> 1,4-Dichlorobenzene MS 1214200-01 ND 23.270 25.000 ug/L 93.1 70-130 <br /> MSD 1214200-01 ND 23.160 25.000 ug/L 0.5 92.6 20 70-130 <br /> 1,1-Dichloroethane MS 1214200-01 ND 24.650 25.000 ug/L 98.6 70-130 <br /> MSD 1214200-01 ND 24.200 25.000 ug/L 1.8 96.8 20 70-130 <br /> 0 Dichloroethene MS 1214200-01 ND 23.670 25.000 ug/L 94.7 70-130 <br /> MSD 1214200-01 ND 23.090 25.000 ug/L 2.5 92.4 20 70-130 <br /> Toluene MS 1214200-01 ND 25.970 25.000 ug/L 104 70-130 <br /> MSD 1214200-01 ND 25.350 25.000 ug/L 2.4 101 20 70-130 <br /> Trichloroethene MS 1214200-01 ND 25.880 25.000 ug/L 104 70-130 <br /> MSD 1214200-01 ND 24.940 25.000 ug/L 3.7 99.8 20 70-130 <br /> 1,2-Dichloroethane-d4(Surrogate) MS 1214200-01 ND 8.5700 10.000 ug/L 85.7 75-125 <br /> MSD 1214200-01 ND 8.5800 10.000 ug/L 0.1 85.8 75-125 <br /> Toluene-d8(Surrogate) MS 1214200-01 ND 10.050 10.000 ug/L 100 80-120 <br /> MSD 1214200-01 ND 10.050 10.000 ug/L 0 100 80-120 <br /> 4-Bromofluorobenzene(Surrogate) MS 1214200-01 ND 9.4900 10.000 ug/L 94.9 80-120 <br /> MSD 1214200-01 ND 9.5200 10.000 ug/L 0.3 95.2 80-120 <br /> The results in this repon apply to the samples analyzed in accordance with the chain of custody 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 wwww.bcdabs.com Page 22 of 26 <br />