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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 30167676.01 <br />Ari Terry <br />Reported:02/15/2024 17:00 <br />Quality Control Report - Precision & Accuracy <br />Constituent Sample IDType Result Result Added Units RPD Recovery RPD Recovery Quals <br />Source Spike Percent Percent <br />Control Limits <br />Metals Analysis <br />Source Lab <br />R# <br />QC Batch ID: B182881 Used client sample: Y - Description: AMW-4, 01/25/2024 13:30 <br />Hexavalent Chromium DUP 0.51020 2.7 100.496802401640-04 ug/L 1 <br />MS 18.631 90 - 1100.49680 20.000 90.72401640-04 ug/L 2 <br />MSD 18.689 0.3 10 90 - 1100.49680 20.000 91.02401640-04 ug/L 3 <br />QC Batch ID: B182892 Used client sample: N <br />Total Arsenic DUP ND 20ND2401588-03RE1 ug/L 4 <br />MS 198.22 75 - 125ND200.00 99.12401588-03RE1 ug/L 5 <br />MSD 202.77 2.3 20 75 - 125ND200.00 1012401588-03RE1 ug/L 6 <br />Total Iron DUP 250.88 2.4 20256.992401588-03RE1 ug/L 4 <br />MS 1297.0 75 - 125256.99 1000.0 1042401588-03RE1 ug/L 5 <br />MSD 1317.2 1.5 20 75 - 125256.99 1000.0 1062401588-03RE1 ug/L 6 <br />Total Manganese DUP ND 20ND2401588-03RE1 ug/L 4 <br />MS 528.27 75 - 125ND500.00 1062401588-03RE1 ug/L 5 <br />MSD 538.25 1.9 20 75 - 125ND500.00 1082401588-03RE1 ug/L 6 <br />QC Batch ID: B183022 Used client sample: Y - Description: AMW-47, 01/25/2024 12:54 <br />Dissolved Aluminum DUP ND 20ND2401640-09 ug/L 7 <br />MS 1073.0 75 - 125ND1020.4 1052401640-09 ug/L 8 <br />MSD 1049.8 2.2 20 75 - 125ND1020.4 1032401640-09 ug/L 9 <br />Dissolved Antimony DUP ND 20ND2401640-09 ug/L 7 <br />MS 333.36 75 - 125ND408.16 81.72401640-09 ug/L 8 <br />MSD 343.96 3.1 20 75 - 125ND408.16 84.32401640-09 ug/L 9 <br />Dissolved Arsenic DUP 11.965 20ND J2401640-09 ug/L 7 <br />MS 222.04 75 - 125ND204.08 1092401640-09 ug/L 8 <br />MSD 224.03 0.9 20 75 - 125ND204.08 1102401640-09 ug/L 9 <br />Dissolved Barium DUP 64.788 4.1 2067.4752401640-09 ug/L 7 <br />MS 505.54 75 - 12567.475 408.16 1072401640-09 ug/L 8 <br />MSD 507.08 0.3 20 75 - 12567.475 408.16 1082401640-09 ug/L 9 <br />Dissolved Beryllium DUP 0.61552 3.1 200.59694 J2401640-09 ug/L 7 <br />MS 213.02 75 - 1250.59694 204.08 1042401640-09 ug/L 8 <br />MSD 213.77 0.4 20 75 - 1250.59694 204.08 1042401640-09 ug/L 9 <br />Dissolved Cadmium DUP ND 20ND2401640-09 ug/L 7 <br />MS 209.90 75 - 125ND204.08 1032401640-09 ug/L 8 <br />MSD 213.14 1.5 20 75 - 125ND204.08 1042401640-09 ug/L 9 <br />Dissolved Chromium DUP ND 20ND2401640-09 ug/L 7 <br />MS 211.95 75 - 125ND204.08 1042401640-09 ug/L 8 <br />MSD 216.84 2.3 20 75 - 125ND204.08 1062401640-09 ug/L 9 <br />Dissolved Cobalt DUP ND 20ND2401640-09 ug/L 7 <br />MS 214.84 75 - 125ND204.08 1052401640-09 ug/L 8 <br />MSD 215.96 0.5 20 75 - 125ND204.08 1062401640-09 ug/L 9 <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 98 of 114Report ID: 1001490133