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ENYIRCNMENTA! BCIEHCEB <br />Arcadis- SLO Reported: 03/07/2023 11:54 <br />735 Tank Farm Rd, Suite 150 Project: Forward Landfill <br />San Luis Obispo, CA 93401 Project Number: 30110749.01 <br />Project Manager: Drew Feucht <br />Metals Analysis <br />Quality Control Report - Laboratory Control Sample <br />Control Limits <br />Spike Percent Percent Lab <br />Constituent QC Sample ID Type Result Level Units Recovery RPD Recovery RPD Quals Run # <br />QC Batch ID: B159311 <br />Hexavalent Chromium <br />3159311-BS1 <br />B159311-BSD1 <br />LCS <br />LCSD <br />19.966 <br />19.298 <br />20.000 <br />20.000 <br />ug/L <br />ug/L <br />99.8 <br />96.5 3.4 <br />90-110 <br />90-110 10 <br />1 <br />2 <br />QC Batch ID: B159358 <br />Dissolved Aluminum <br />8159358-BS1 <br />LCS <br />1101.6 <br />1000.0 <br />ug/L <br />110 <br />80-120 <br />3 <br />Dissolved Antimony <br />8159358-BS1 <br />LCS <br />366.71 <br />400.00 <br />ug/L <br />91.7 <br />80-120 <br />3 <br />Dissolved Barium <br />8159358-BS1 <br />LCS <br />449.92 <br />400.00 <br />ug/L <br />112 <br />80-120 <br />3 <br />Dissolved Beryllium <br />B159358-BS1 <br />LCS <br />206.56 <br />200.00 <br />ug/L <br />103 <br />80-120 <br />3 <br />Dissolved Cadmium <br />B159358-BS1 <br />LCS <br />201.55 <br />200.00 <br />ug/L <br />101 <br />80-120 <br />3 <br />Dissolved Chromium <br />B159358-BS1 <br />LCS <br />198.80 <br />200.00 <br />ug/L <br />99.4 <br />80-120 <br />3 <br />Dissolved Cobalt <br />B159358-BS1 <br />LCS <br />202.16 <br />200.00 <br />ug/L <br />101 <br />80-120 <br />3 <br />Dissolved Copper <br />B159358-BS1 <br />LCS <br />386.76 <br />400.00 <br />ug/L <br />96.7 <br />80-120 <br />3 <br />Dissolved Iron <br />B159358-BS1 <br />LCS <br />1119.2 <br />1000.0 <br />ug/L <br />112 <br />80-120 <br />3 <br />Dissolved Lead <br />B159358-BS1 <br />LCS <br />418.62 <br />400.00 <br />ug/L <br />105 <br />80-120 <br />3 <br />Dissolved Manganese <br />B159358-BS2 <br />LCS <br />520.84 <br />500.00 <br />ug/L <br />104 <br />80-120 <br />4 <br />Dissolved Nickel <br />B159358-BS1 <br />LCS <br />444.28 <br />400.00 <br />ug/L <br />111 <br />80-120 <br />3 <br />Dissolved Silver <br />B159358-BS1 <br />LCS <br />97.032 <br />100.00 <br />ug/L <br />97.0 <br />80-120 <br />3 <br />Dissolved Strontium <br />8159358-BS1 <br />LCS <br />535.85 <br />500.00 <br />ug/L <br />107 <br />80-120 <br />3 <br />Dissolved Vanadium <br />8159358-BS1 <br />LCS <br />194.34 <br />200.00 <br />ug/L <br />97.2 <br />80-120 <br />3 <br />Dissolved Zinc <br />B159358-BS1 <br />LCS <br />531.76 <br />500.00 <br />ug/L <br />106 <br />80-120 <br />3 <br />QC Batch ID: B159367 <br />Dissolved Arsenic <br />B159367-BS1 <br />LCS <br />93.967 <br />100.00 <br />ug/L <br />94.0 <br />85-115 <br />5 <br />Dissolved Selenium <br />B159367-BS1 <br />LCS <br />95.311 <br />100.00 <br />ug/L <br />95.3 <br />85-115 <br />5 <br />Dissolved Thallium <br />B159367-BS1 <br />LCS <br />38.376 <br />40.000 <br />ug/L <br />95.9 <br />85-115 <br />5 <br />Dissolved Tin <br />B159367-BS1 <br />LCS <br />38.815 <br />40.000 <br />ug/L <br />97.0 <br />85-115 <br />5 <br />QC Batch ID: B159560 <br />Total Arsenic <br />B159560-BS1 <br />LCS <br />214.37 <br />200.00 <br />ug/L <br />107 <br />80-120 <br />6 <br />Total Iron <br />B159560-BS2 <br />LCS <br />1144.6 <br />1000.0 <br />ug/L <br />114 <br />80-120 <br />7 <br />Total Manganese <br />B159560-BS2 <br />LCS <br />562.01 <br />500.00 <br />ug/L <br />112 <br />80-120 <br />7 <br />QC Batch ID: B159674 <br />Dissolved Mercury <br />B159674-BS1 <br />LCS <br />0.96750 <br />1.0000 <br />ug/L <br />96.8 <br />85-115 <br />8 <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 />Report ID: 1001403762 4100 Atlas Court Bakersfield, CA 93308 (661) 327-4911 FAX (661) 327-1918 www.pacelabs.com Page 70 of 78 <br />