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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 - 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: N <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: B183023 Used client sample: N <br />Dissolved Aluminum DUP 29.650 20ND J2401701-03 ug/L 4 <br />MS 1035.4 75 - 125ND1020.4 1012401701-03 ug/L 5 <br />MSD 1028.7 0.6 20 75 - 125ND1020.4 1012401701-03 ug/L 6 <br />Dissolved Antimony DUP ND 20ND2401701-03 ug/L 7 <br />MS 332.69 75 - 125ND408.16 81.52401701-03 ug/L 8 <br />MSD 342.80 3.0 20 75 - 125ND408.16 84.02401701-03 ug/L 9 <br />Dissolved Arsenic DUP ND 20ND2401701-03 ug/L 7 <br />MS 225.69 75 - 125ND204.08 1112401701-03 ug/L 8 <br />MSD 232.27 2.9 20 75 - 125ND204.08 1142401701-03 ug/L 9 <br />Dissolved Barium DUP 117.72 0.6 20117.032401701-03 ug/L 7 <br />MS 539.68 75 - 125117.03 408.16 1042401701-03 ug/L 8 <br />MSD 537.20 0.5 20 75 - 125117.03 408.16 1032401701-03 ug/L 9 <br />Dissolved Beryllium DUP ND 20ND2401701-03 ug/L 7 <br />MS 213.14 75 - 125ND204.08 1042401701-03 ug/L 8 <br />MSD 219.66 3.0 20 75 - 125ND204.08 1082401701-03 ug/L 9 <br />Dissolved Cadmium DUP ND 20ND2401701-03 ug/L 7 <br />MS 211.38 75 - 125ND204.08 1042401701-03 ug/L 8 <br />MSD 221.07 4.5 20 75 - 125ND204.08 1082401701-03 ug/L 9 <br />Dissolved Chromium DUP ND 20ND2401701-03 ug/L 7 <br />MS 222.42 75 - 125ND204.08 1092401701-03 ug/L 8 <br />MSD 225.29 1.3 20 75 - 125ND204.08 1102401701-03 ug/L 9 <br />Dissolved Cobalt DUP ND 20ND2401701-03 ug/L 7 <br />MS 212.69 75 - 125ND204.08 1042401701-03 ug/L 8 <br />MSD 218.13 2.5 20 75 - 125ND204.08 1072401701-03 ug/L 9 <br />Dissolved Copper DUP ND 20ND2401701-03 ug/L 7 <br />MS 417.77 75 - 125ND408.16 1022401701-03 ug/L 8 <br />MSD 427.83 2.4 20 75 - 125ND408.16 1052401701-03 ug/L 9 <br />Dissolved Iron DUP ND 20ND2401701-03 ug/L 7 <br />MS 1038.6 75 - 125ND1020.4 1022401701-03 ug/L 8 <br />MSD 1037.1 0.2 20 75 - 125ND1020.4 1022401701-03 ug/L 9 <br />Dissolved Lead DUP ND 20ND2401701-03 ug/L 7 <br />MS 437.61 75 - 125ND408.16 1072401701-03 ug/L 8 <br />MSD 441.46 0.9 20 75 - 125ND408.16 1082401701-03 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 42 of 55Report ID: 1001493457