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Laboratories Inc. � �,� <br /> Environmental Testing Laboratory Since 1949 <br /> Condor Earth Technologies Inc. Reported: 12/16/2019 12:29 <br /> P O Box 3905 Project: Soil Samples <br /> Sonora,CA 95370 Project Number: 8171 <br /> Project Manager: Zack Solow <br /> Total Concentrations (TTLC) <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 Qualls <br /> QC Batch ID: B064367 Used client sample: N <br /> Arsenic DUP 1941668-04 5.2468 4.8493 mg/kg 7.9 20 <br /> MS 1941668-04 5.2468 22.934 20.000 mg/kg 88.4 75-125 <br /> MSD 1941668-04 5.2468 22.708 20.000 mg/kg 1.0 87.3 20 75-125 <br /> Lead DUP 1941668-04 5.2833 5.2806 mg/kg 0.1 20 <br /> MS 1941668-04 5.2833 98.853 100.00 mg/kg 93.6 75-125 <br /> MSD 1941668-04 5.2833 98.356 100.00 mg/kg 0.5 93.1 20 75-125 <br /> The results in this report apph to the samples onalvaed in accordance with the chain of custodv document.This onalptical report must be reproduced in its entirerv. <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: 1000975422 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bclabs.com Page 30 of 31 <br />