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Laboratories Inc. � �_ <br /> Environmental Testing Laboratory Since 1949 <br /> Enviro Tech Consultants, Inc. Reported: 05/01/2018 12:34 <br /> 5400 Rosedale Highway Project: Misc.Samples <br /> Bakersfield,CA 93308 Project Number: COL 103 Areal Soil Sample <br /> Project Manager: Kelsey Padilla <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 Quals <br /> QC Batch ID: B011871 Used client sample: Y- Description: COL1-1A, 04/16/2018 10:32 <br /> Arsenic DUP 1812763-01 7.6340 7.6654 mg/kg 0.4 20 <br /> MS 1812763-01 7.6340 16.984 10.000 mg/kg 93.5 75-125 <br /> MSD 1812763-01 7.6340 17.552 10.000 mg/kg 3.3 99.2 20 75-125 <br /> Vanadium DUP 1812763-01 30.819 31.650 mg/kg 2.7 20 <br /> MS 1812763-01 30.819 128.46 100.00 mg/kg 97.6 75-125 <br /> MSD 1812763-01 30.819 124.02 100.00 mg/kg 3.5 93.2 20 75-125 <br /> QC Batch ID: B011883 Used client sample: Y- Description: COI-1-11A, 04/16/2018 12:19 <br /> Arsenic DUP 1812763-21 6.1534 6.0967 mg/kg 0.9 20 <br /> MS 1812763-21 6.1534 16.752 10.000 mg/kg 106 75-125 <br /> MSD 1812763-21 6.1534 16.530 10.000 mg/kg 1.3 104 20 75-125 <br /> Vanadium DUP 1812763-21 25.013 25.950 mg/kg 3.7 20 <br /> MS 1812763-21 25.013 137.07 100.00 mg/kg 112 75-125 <br /> MSD 1812763-21 25.013 137.33 100.00 mg/kg 0.2 112 20 75-125 <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: 1000738586 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bclabs.com Page 39 of 40 <br />