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Laboratories Inc. , <br /> Environmental Testing Laboratory Since 1949 <br /> Mark R. Magargee PG,CHg Reported: 02/25/2019 11:45 <br /> 6730 Canaletto Avenue Project: General <br /> Bakersfield,CA 93306 Project Number: Sohal#3 <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: B037856 Used client sample: N <br /> Benzene MS 1902131-52 ND 0.12440 0.12500 mg/kg 99.5 70-130 <br /> MSD 1902131-52 ND 0.11389 0.12500 mg/kg 8.8 91.1 20 70-130 <br /> Toluene MS 1902131-52 ND 0.11853 0.12500 mg/kg 94.8 70-130 <br /> MSD 1902131-52 ND 0.12017 0.12500 mg/kg 1.4 96.1 20 70-130 <br /> 1,2-Dichloroethane-d4(Surrogate) MS 1902131-52 ND 0.055520 0.050000 mg/kg 111 70-121 <br /> MSD 1902131-52 ND 0.055670 0.050000 mg/kg 0.3 111 70-121 <br /> Toluene-d8(Surrogate) MS 1902131-52 ND 0.046750 0.050000 mg/kg 93.5 81-117 <br /> MSD 1902131-52 ND 0.051390 0.050000 mg/kg 9.5 103 81-117 <br /> 4-Bromofluorobenzene(Surrogate) MS 1902131-52 ND 0.051480 0.050000 mg/kg 103 74-121 <br /> MSD 1902131-52 ND 0.052570 0.050000 mg/kg 2.1 105 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 /> Report ID: 1000854621 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bclabs.com Page 36 of 40 <br />