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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 />4Q23 Forward Unit <br />Drew Feucht <br />Reported:12/14/2023 18:58 <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: B178626 Used client sample: N <br />Hexavalent Chromium DUP 0.073700 1.5 100.074800 J2321455-10 ug/L 1 <br />MS 20.366 90 - 1100.074800 20.202 1002321455-10 ug/L 2 <br />MSD 20.334 0.2 10 90 - 1100.074800 20.202 1002321455-10 ug/L 3 <br />QC Batch ID: B178641 Used client sample: N <br />Dissolved Aluminum DUP ND 20ND2321728-01 ug/L 4 <br />MS 1124.8 75 - 125ND1020.4 1102321728-01 ug/L 5 <br />MSD 1152.2 2.4 20 75 - 125ND1020.4 1132321728-01 ug/L 6 <br />Dissolved Antimony DUP ND 206.36692321728-01 ug/L 7 <br />MS 418.67 75 - 1256.3669 408.16 1012321728-01 ug/L 8 <br />MSD 423.98 1.3 20 75 - 1256.3669 408.16 1022321728-01 ug/L 9 <br />Dissolved Arsenic DUP ND 20ND2321728-01 ug/L 7 <br />MS 242.02 75 - 125ND204.08 1192321728-01 ug/L 8 <br />MSD 241.89 0.1 20 75 - 125ND204.08 1192321728-01 ug/L 9 <br />Dissolved Barium DUP 49.314 2.7 2050.6762321728-01 ug/L 7 <br />MS 507.25 75 - 12550.676 408.16 1122321728-01 ug/L 8 <br />MSD 511.89 0.9 20 75 - 12550.676 408.16 1132321728-01 ug/L 9 <br />Dissolved Beryllium DUP 0.93828 1.2 200.94944 J2321728-01 ug/L 7 <br />MS 233.87 75 - 1250.94944 204.08 1142321728-01 ug/L 8 <br />MSD 232.67 0.5 20 75 - 1250.94944 204.08 1142321728-01 ug/L 9 <br />Dissolved Cadmium DUP ND 20ND2321728-01 ug/L 7 <br />MS 232.30 75 - 125ND204.08 1142321728-01 ug/L 8 <br />MSD 231.16 0.5 20 75 - 125ND204.08 1132321728-01 ug/L 9 <br />Dissolved Chromium DUP ND 20ND2321728-01 ug/L 7 <br />MS 245.78 75 - 125ND204.08 1202321728-01 ug/L 8 <br />MSD 244.81 0.4 20 75 - 125ND204.08 1202321728-01 ug/L 9 <br />Dissolved Cobalt DUP ND 20ND2321728-01 ug/L 7 <br />MS 240.63 75 - 125ND204.08 1182321728-01 ug/L 8 <br />MSD 239.61 0.4 20 75 - 125ND204.08 1172321728-01 ug/L 9 <br />Dissolved Copper DUP ND 20ND2321728-01 ug/L 7 <br />MS 461.85 75 - 125ND408.16 1132321728-01 ug/L 8 <br />MSD 461.73 0.0 20 75 - 125ND408.16 1132321728-01 ug/L 9 <br />Dissolved Iron DUP ND 20ND2321728-01 ug/L 7 <br />MS 1100.1 75 - 125ND1020.4 1082321728-01 ug/L 8 <br />MSD 1107.1 0.6 20 75 - 125ND1020.4 1082321728-01 ug/L 9 <br />Dissolved Lead DUP 4.1329 20ND J2321728-01 ug/L 7 <br />MS 449.67 75 - 125ND408.16 1102321728-01 ug/L 8 <br />MSD 450.88 0.3 20 75 - 125ND408.16 1102321728-01 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 22 of 36Report ID: 1001476303