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C <br /> ace Analytical <br /> ENVIRONMENTAL SCIENCES <br /> Arcadis-SLO Reported: 04/14/2026 12:02 <br /> 4119 Broad Street Suite 210 Project: Forward Landfill-COELT <br /> San Luis Obispo,CA 93401 Project Number: 30274343.01 <br /> Project Manager: Dalia Rumani <br /> Metals Analysis <br /> Quality Control Report - Precision & Accuracy <br /> Control Limits <br /> Source Source Spike Percent Percent Lab <br /> Constituent Type Sample ID Result Result Added Units RPD Recovery RPD Recovery Quals R# <br /> QC Batch ID: B226693 Used client sample: Y-Description: MW-16, 02/03/2026 10:21 <br /> Dissolved Aluminum DUP 2601733-01 ND ND ug/L 20 1 <br /> MS 2601733-01 ND 1050.1 1020.4 ug/L 103 75-125 2 <br /> MSD 2601733-01 ND 1063.6 1020.4 ug/L 1.3 104 20 75-125 3 <br /> Dissolved Antimony DUP 2601733-01 ND ND ug/L 20 1 <br /> MS 2601733-01 ND 459.59 408.16 ug/L 113 75-125 2 <br /> MSD 2601733-01 ND 462.14 408.16 ug/L 0.6 113 20 75-125 3 <br /> Dissolved Barium DUP 2601733-01 516.90 521.80 ug/L 0.9 20 1 <br /> MS 2601733-01 516.90 942.35 408.16 ug/L 104 75-125 2 <br /> MSD 2601733-01 516.90 949.29 408.16 ug/L 0.7 106 20 75-125 3 <br /> Dissolved Beryllium DUP 2601733-01 ND ND ug/L 20 1 <br /> MS 2601733-01 ND 233.06 204.08 ug/L 114 75-125 2 <br /> MSD 2601733-01 ND 233.10 204.08 ug/L 0.0 114 20 75-125 3 <br /> Dissolved Cadmium DUP 2601733-01 ND ND ug/L 20 1 <br /> MS 2601733-01 ND 235.51 204.08 ug/L 115 75-125 2 <br /> MSD 2601733-01 ND 235.92 204.08 ug/L 0.2 116 20 75-125 3 <br /> Dissolved Chromium DUP 2601733-01 2.2000 2.2000 ug/L 0 20 J 1 <br /> MS 2601733-01 2.2000 235.71 204.08 ug/L 114 75-125 2 <br /> MSD 2601733-01 2.2000 236.33 204.08 ug/L 0.3 115 20 75-125 3 <br /> Dissolved Cobalt DUP 2601733-01 ND ND ug/L 20 1 <br /> MS 2601733-01 ND 230.00 204.08 ug/L 113 75-125 2 <br /> MSD 2601733-01 ND 230.61 204.08 ug/L 0.3 113 20 75-125 3 <br /> Dissolved Copper DUP 2601733-01 1.5000 1.7000 ug/L 12.5 20 J 1 <br /> MS 2601733-01 1.5000 459.80 408.16 ug/L 112 75-125 2 <br /> MSD 2601733-01 1.5000 459.59 408.16 ug/L 0.0 112 20 75-125 3 <br /> Dissolved Iron DUP 2601733-01 ND ND ug/L 20 1 <br /> MS 2601733-01 ND 1038.0 1020.4 ug/L 102 75-125 2 <br /> MSD 2601733-01 ND 1041.0 1020.4 ug/L 0.3 102 20 75-125 3 <br /> Dissolved Lead DUP 2601733-01 ND ND ug/L 20 1 <br /> MS 2601733-01 ND 455.41 408.16 ug/L 112 75-125 2 <br /> MSD 2601733-01 ND 457.24 408.16 ug/L 0.4 112 20 75-125 3 <br /> Dissolved Manganese DUP 2601733-01 ND ND ug/L 20 1 <br /> MS 2601733-01 ND 530.61 510.20 ug/L 104 75-125 2 <br /> MSD 2601733-01 ND 530.82 510.20 ug/L 0.0 104 20 75-125 3 <br /> Dissolved Molybdenum DUP 2601733-01 ND ND ug/L 20 1 <br /> MS 2601733-01 ND 215.82 204.08 ug/L 106 75-125 2 <br /> MSD 2601733-01 ND 220.00 204.08 ug/L 1.9 108 20 75-125 3 <br /> Dissolved Nickel DUP 2601733-01 7.0000 8.0000 ug/L 13.3 20 J 1 <br /> MS 2601733-01 7.0000 468.37 408.16 ug/L 113 75-125 2 <br /> MSD 2601733-01 7.0000 467.35 408.16 ug/L 0.2 113 20 75-125 3 <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: 1001665842 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 106 of 109 <br />