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Laboratories Inc. <br /> Environmental Testing Laboratory Since 1949 <br /> CB&I Reported: 08/08/2013 15:56 <br /> 180 Promenade Circle,Suite 320 Project: North County LF,SJ County <br /> Sacramento,CA 95834 Project Number,. 149270 <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: BWG2026 Used client sample: N <br /> Benzene MS 1313237-90 ND 22.610 25.000 ug/L 90.4 70-130 <br /> MSD 1313237-90 ND 23.057 25.000 ug/L 2.0 92.2 20 70-130 <br /> Bromodichloromethane MS 1313237-90 ND 25.182 25.000 ug/L 101 70-130 <br /> MSD 1313237-90 ND 25.033 25.000 ug/L 0.6 100 20 70-130 <br /> Chlorobenzene MS 1313237-90 ND 22.326 25.000 ug/L 89.3 70-130 <br /> MSD 1313237-90 ND 23.006 25.000 ug/L 3.0 92.0 20 70-130 <br /> Chloroethane MS 1313237-90 ND 25.527 25.000 ug/L 102 70-130 <br /> MSD 1313237-90 ND 26.163 25.000 ug/L 2.5 105 20 70-130 <br /> 1,4-Dichlorobenzene MS 1313237-90 ND 25.689 25.000 ug/L 103 70-130 <br /> MSD 1313237-90 ND 26.505 25.000 ug/L 3.1 106 20 70-130 <br /> 1,1-Dichloroethane MS 1313237-90 ND 23.579 25.000 ug/L 94.3 70-130 <br /> MSD 1313237-90 ND 24.114 25.000 ug/L 2.2 96.5 20 70-130 <br /> 1,1-Dichloroethene MS 1313237-90 ND 26.782 25.000 ug/L 107 70-130 <br /> MSD 1313237-90 ND 27.448 25.000 ug/L 2.5 110 20 70-130 <br /> Toluene MS 1313237-90 ND 23.404 25.000 ug/L 93.6 70-130 <br /> MSD 1313237-90 ND 23.724 25.000 ug/L 1.4 94.9 20 70-130 <br /> Trichloroethene MS 1313237-90 ND 27.607 25.000 ug/L 110 70-130 <br /> MSD 1313237-90 ND 28.743 25.000 ug/L 4.0 115 20 70-130 <br /> 1,2-Dichloroethane-d4(Surrogate) MS 1313237-90 ND 10.080 10.000 ug/L 101 75-125 <br /> MSD 1313237-90 ND 9.6700 10.000 ug/L 4.2 96.7 75-125 <br /> Toluene-d8(Surrogate) MS 1313237-90 ND 9.9600 10.000 ug/L 99.6 80-120 <br /> MSD 1313237-90 ND 9.8200 10.000 ug/L 1.4 98.2 80-120 <br /> 4-Bromofluorobenzene(Surrogate) MS 1313237-90 ND 10.400 10.000 ug/L 104 80-120 <br /> MSD 1313237-90 ND 10.280 10.000 ug/L 1.2 103 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.bclabs.com Page 92 of 26 <br />