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(19) ace Analytical <br />UPRR_Patriot Env Services,McClellan,CA <br />Reported: 08/11/2022 13:26 <br />5025 Arnold Ave <br />Project: WR011556 <br />McClellan Park, CA 95652 <br />Project Number: 11-22-00543 <br />Project Manager: Ambrose Kong <br />Total Concentrations (TTLC) <br />Quality Control Report - Precision & Accuracy <br />Control Limits <br /> <br />Source Source Spike Percent Percent Lab <br />Constituent <br /> <br />Type Sample ID Result Result Added Units RPD Recovery RPD Recovery Quals <br /> <br />QC Batch ID: B145925 Used client sample: Y - Description: WR11556, 08/03/2022 09:30 <br />87.7 <br />87.2 <br />20 <br />20 <br />75 - 125 <br />75- 125 <br />Thallium DUP 2218356-01 ND ND mg/kg <br />MS 2218356-01 ND 87.730 100.00 mg/kg <br />MSD 2218356-01 ND 87.248 100.00 mg/kg 0.6 <br />Vanadium DUP 2218356-01 45.058 43.512 mg/kg 3.5 20 <br />MS 2218356-01 45.058 132.13 100.00 mg/kg 87.1 75 - 125 <br />MSD 2218356-01 45.058 132.50 100.00 mg/kg 0.3 87.4 20 75 - 125 <br />Zinc DUP 2218356-01 36.116 34.992 mg/kg 3.2 20 <br />MS 2218356-01 36.116 124.06 100.00 mg/kg 87.9 75 - 125 <br />MSD 2218356-01 36.116 123.55 100.00 mg/kg 0.4 87.4 20 75 - 125 <br />QC Batch ID: B146016 Used client sample: Y - Description: WR11556, 08/03/2022 09:30 <br />Mercury DUP 2218356-01 0.031587 0.032063 mg/kg 1.5 20 J <br />MS 2218356-01 0.031587 0.74286 0.79365 mg/kg 89.6 80- 120 <br />MSD 2218356-01 0.031587 0.90159 0.79365 mg/kg 19.3 110 20 80 - 120 <br />ENVIRONMENTAL SCIENCES <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. Pace Analytical assumes no responsibility for report alteration, separation, detachment or third party interpretation. <br />4100 Atlas Court Bakersfield, CA 93308 (661) 327-4911 FAX (661) 327-1918 www.pacelabs.com Report ID: 1001335654 Page 30 of 31