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ace Analytical <br />EtIVIRON ,IENTAL SCIE`ICES <br />UPRR_Patriot Env Services,McClellan,CA <br /> <br />Reported: 08/11/2022 13:26 <br />5025 Arnold Ave Project: VVR011556 <br />McClellan Park, CA 95652 <br />Project Number: 11-22-00543 <br />Project Manager: Ambrose Kong <br />Total Concentrations (TTLC) <br />Quality Control Report - Laboratory Control Sample <br />Constituent QC Sample ID Type Result <br />Spike <br />Level Units <br />Percent <br />Recovery <br />Control Limits <br />Percent Lab <br />RPD Recovery RPD Quals <br />QC Batch ID: B145925 <br />LCS 93.206 100.00 mg/kg 93.2 75 - 125 Anfimony B145925-BS1 <br />Arsenic B145925-BS1 LCS 17.531 20.000 mg/kg 87.7 75 - 125 <br />Barium B145925-BS1 LCS 103.94 100.00 mg/kg 104 75 - 125 <br />Beryllium B145925-BS1 LCS 9.5470 10.000 mg/kg 95.5 75 - 125 <br />Cadmium B145925-BS1 LCS 9.5072 10.000 mg/kg 95.1 75 - 125 <br />Chromium B145925-BSI LCS 97.514 100.00 mcilcs 97.5 75 - 125 <br />Cobalt B145925-BSI LCS 95.171 100.00 mg/kg 95.2 75 - 125 <br />Copper B145925-BSI LCS 94.489 100.00 mg/kg 94.5 75 - 125 <br />Lead B145925-BS1 LCS 100.59 100.00 mg/kg 101 75 - 125 <br />Molybdenum B145925-BS1 LCS 96.836 100.00 mg/kg 96.8 75- 125 <br />Nickel B145925-BS1 LCS 103.15 100.00 mg/kg 103 75-125 <br />Selenium B145925-BS1 LCS 18.894 20.000 mg/kg 94.5 75 - 125 <br />Silver B145925-BSI LCS 9.8188 10.000 mg/kg 98.2 75 - 125 <br />Thallium B145925-BS1 LCS 109.96 100.00 mg/kg 110 75 - 125 <br />Vanadium B145925-BS1 LCS 94.875 100.00 mg/kg 94.9 75 - 125 <br />Zinc B145925-BS1 LCS 96.028 100.00 mg/kg 96.0 75 - 125 <br />IQC Batch ID: B146016 <br />LCS 0.74444 0 79365 mg/kg 93.8 80 - 120 Mercury B146016-BS1 <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 28 of 31