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Arcadis- SLO <br />4119 Broad Street Suite 210 <br />San Luis Obispo, CA 93401 <br />Project: <br />Project Number: <br />Project Manager: <br />Forward Landfill <br />Forward Landfill 1Q24 30167676.01 <br />Ari Terry <br />Reported:03/04/2024 9:14 <br />Quality Control Report - Laboratory Control Sample <br />Constituent <br />Control Limits <br />PercentPercentSpike <br />QC Sample ID Type Result Level Units Recovery RPD Recovery RPD Quals <br />Metals Analysis <br />Run # <br />Lab <br />QC Batch ID: B182881 <br />Hexavalent Chromium B182881-BS1 LCS 18.708 20.000 93.5 90 - 110ug/L 1 <br />QC Batch ID: B183023 <br />Dissolved Aluminum B183023-BS2 LCS 961.23 1000.0 96.1 80 - 120ug/L 2 <br />Dissolved Antimony B183023-BS1 LCS 361.63 400.00 90.4 80 - 120ug/L 3 <br />Dissolved Arsenic B183023-BS1 LCS 213.11 200.00 107 80 - 120ug/L 3 <br />Dissolved Barium B183023-BS1 LCS 405.93 400.00 101 80 - 120ug/L 3 <br />Dissolved Beryllium B183023-BS1 LCS 202.80 200.00 101 80 - 120ug/L 3 <br />Dissolved Cadmium B183023-BS1 LCS 200.78 200.00 100 80 - 120ug/L 3 <br />Dissolved Chromium B183023-BS1 LCS 204.04 200.00 102 80 - 120ug/L 3 <br />Dissolved Cobalt B183023-BS1 LCS 210.88 200.00 105 80 - 120ug/L 3 <br />Dissolved Copper B183023-BS1 LCS 403.27 400.00 101 80 - 120ug/L 3 <br />Dissolved Iron B183023-BS1 LCS 1003.4 1000.0 100 80 - 120ug/L 3 <br />Dissolved Lead B183023-BS1 LCS 440.28 400.00 110 80 - 120ug/L 3 <br />Dissolved Manganese B183023-BS1 LCS 529.17 500.00 106 80 - 120ug/L 3 <br />Dissolved Nickel B183023-BS1 LCS 426.44 400.00 107 80 - 120ug/L 3 <br />Dissolved Selenium B183023-BS1 LCS 210.12 200.00 105 80 - 120ug/L 3 <br />Dissolved Silver B183023-BS2 LCS 98.888 100.00 98.9 80 - 120ug/L 2 <br />Dissolved Tin B183023-BS1 LCS 233.13 200.00 117 80 - 120ug/L 3 <br />Dissolved Thallium B183023-BS1 LCS 452.00 400.00 113 80 - 120ug/L 3 <br />Dissolved Vanadium B183023-BS1 LCS 204.59 200.00 102 80 - 120ug/L 3 <br />Dissolved Zinc B183023-BS1 LCS 521.22 500.00 104 80 - 120ug/L 3 <br />QC Batch ID: B183273 <br />Dissolved Mercury B183273-BS1 LCS 0.96250 1.0000 96.2 85 - 115ug/L 4 <br />LCSDB183273-BSD1 1.0425 1.0000 104 8.0 85 - 115 20ug/L 5 <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 Page 40 of 55Report ID: 1001493457