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Laboratories Inc. , <br /> Environmental Testing Laboratory Since 1949 <br /> Mark R. Magargee PG,CHg Reported: 03/23/2020 21:34 <br /> 6730 Canaletto Avenue Project: Soil <br /> Bakersfield,CA 93306 Project Number: [none] <br /> Project Manager: Mark Magargee <br /> Volatile Organic Analysis (EPA Method 82606) <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: B073447 Used client sample: N <br /> Benzene MS 2005481-71 ND 0.11999 0.12500 mg/kg 96.0 70-130 <br /> MSD 2005481-71 ND 0.14021 0.12500 mg/kg 15.5 112 20 70-130 <br /> Toluene MS 2005481-71 ND 0.11400 0.12500 mg/kg 91.2 70-130 <br /> MSD 2005481-71 ND 0.13308 0.12500 mg/kg 15.4 106 20 70-130 <br /> 1,2-Dichloroethane-d4(Surrogate) MS 2005481-71 ND 0.053240 0.050000 mg/kg 106 70-121 <br /> MSD 2005481-71 ND 0.052510 0.050000 mg/kg 1.4 105 70-121 <br /> Toluene-d8(Surrogate) MS 2005481-71 ND 0.049800 0.050000 mg/kg 99.6 81-117 <br /> MSD 2005481-71 ND 0.050160 0.050000 mg/kg 0.7 100 81-117 <br /> 4-Bromofluorobenzene(Surrogate) MS 2005481-71 ND 0.052110 0.050000 mg/kg 104 74-121 <br /> MSD 2005481-71 ND 0.048970 0.050000 mg/kg 6.2 97.9 74-121 <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 /> ReportID: 1001011803 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bclabs.com Page 10 of 11 <br />