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Laboratories Inc. I <br /> Environmental Testing Laboratory Since 1949 <br /> CB&I Reported: 02/27/2014 10:21 <br /> 180 Promenade Circle,Suite 320 Project: Corral Hollow LF,SJ County <br /> Sacramento,CA 95834 Project Number. Resample 149266 <br /> Project Manager: Sheila Richgels <br /> Volatile Organic Analysis (EPA Method 826013) <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 1D: BXB1728 Used client sample: N <br /> Benzene MS 1404104-04 ND 28.460 25.000 ug/L 114 70-130 <br /> MSD 1404104-04 ND 27.320 25.000 ug/L 4.1 109 20 70-130 <br /> Toluene MS 1404104-04 ND 28.880 25.000 ug/L 116 70-130 <br /> MSD 140410404 ND 27.960 25.000 ug/L 3.2 112 20 70-130 <br /> 1,2-Dichloroethane-d4(Surrogate) MS 1404104-04 ND 10.020 10.000 ug/L 100 75-125 <br /> MSD 140410404 ND 10.460 10.000 ug/L 4.3 105 75-125 <br /> Toluene-d8(Surrogate) MS 140410404 ND 10.070 10.000 ug/L 101 80-120 <br /> MSD 140410404 ND 9.9800 10.000 ug/L 0.9 99.8 80-120 <br /> 4Bromofluorobenzene(Surrogate) MS 140410404 ND 9.7900 10.000 ug/L 97.9 80-120 <br /> MSD 1404104-04 ND 9.8600 10.000 ug/L 0.7 98.6 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 parry.BC Laboratories,Inc.assumes no responsibility for report alteration,separation,detachment or third .it,interpretation. <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bciabs.com Page 13 of 14 <br />