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:WLaboratories Inc. <br /> E nvironmental Testing Laboratory Since 1949 <br /> haw Reported: 08/21/2012 11:51 <br /> 1180 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: BVH0170 Used client sample: N <br /> Benzene MS 1213312-30 ND 25.080 25.000 ug/L 100 70-130 <br /> MSD 1213312-30 ND 26.880 25.000 ug/L 6.9 108 20 70-130 <br /> Bromodichloromethane MS 1213312-30 ND 25.590 25.000 ug/L 102 70-130 <br /> MSD 1213312-30 ND 27.520 25.000 ug/L 7.3 110 20 . 70-130 <br /> Chlorobenzene MS 1213312-30 ND 26.530 25.000 ug/L 106 70-130 <br /> MSD 1213312-30 ND 27.390 25.000 ug/L 3.2 110 20 70-130 <br /> Chloroethane MS 1213312-30 ND 28.430 25.000 ug/L 114 70-130 <br /> MSD 1213312-30 ND 29.600 25.000 ug/L 4.0 118 20 70-130 <br /> 1,4-Dichlorobenzene MS 1213312-30 ND 26.550 25.000 ug/L 106 70-130 <br /> MSD 1213312-30 ND 27.990 25.000 ug/L 5.3 112 20 70-130 <br /> 1,1-Dichloroethane MS 1213312-30 ND 26.420 25.000 ug/L 106 70-130 <br /> MSD 1213312-30 ND 28.480 25.000 ug/L 7.5 114 20 70-130 <br /> 0 Dichloroethene MS 1213312-30 ND 25.420 25.000 ug/L 102 70-130 <br /> MSD 1213312-30 ND 27.540 25.000 ug/L 8.0 110 20 70-130 <br /> Toluene MS 1213312-30 ND 25.290 25.000 ug/L 101 70-130 <br /> MSD 1213312-30 ND 26.520 25.000 ug/L 4.7 106 20 70-130 <br /> Trichloroethene MS 1213312-30 ND 24.490 25.000 ug/L 98.0 70-130 <br /> MSD 1213312-30 ND 26.950 25.000 ug/L 9.6 108 20 70-130 <br /> 1,2-Dichloroethane-l4(Surrogate) MS 1213312-30 ND 11.390 10.000 ug/L 114 75-125 <br /> MSD 1213312-30 ND 11.070 10.000 ug/L 2.8 111 75-125 <br /> Toluene-d8(Surrogate) MS 1213312-30 ND 10.270 10.000 ug/L 103 80-120 <br /> MSD 1213312-30 ND 10.100 10.000 ug/L 1.7 101 80-120 <br /> 4-Bromofluorobenzene(Surrogate) MS 1213312-30 ND 10.030 10.000 ug/L 100 80-120 <br /> MSD 1213312-30 ND 9.9300 10.000 ug/L 1.0 99.3 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 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.bdabs.com Page 32 of 36 <br />