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m <br /> aceAna/ytica/ <br /> ENVIRONMENTAL SCIENCES <br /> Arcadis-SLO Reported: 04/10/2026 15:35 <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 /> Water Analysis (General Chemistry) <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: B227026 Used client sample: Y- Description: AMW-22, 02/09/2026 09:13 <br /> Dissolved Potassium DUP 2602031-01 7.1625 7.0948 mg/L 0.9 20 13 <br /> MS 2602031-01 7.1625 16.950 10.204 mg/L 95.9 75-125 14 <br /> MSD 2602031-01 7.1625 16.928 10.204 mg/L 0.1 95.7 20 75-125 15 <br /> QC Batch ID: B227196 Used client sample: N <br /> Bicarbonate DUP 2602014-07 862.16 876.64 mg/L 1.7 10 16 <br /> Carbonate DUP 2602014-07 ND ND mg/L 10 16 <br /> QC Batch ID: B227197 Used client sample: Y- Description: AMW-58M, 02/09/2026 11:31 <br /> Bicarbonate DUP 2602031-05 430.34 409.19 mg/L 5.0 10 17 <br /> Carbonate DUP 2602031-05 ND ND mg/L 10 17 <br /> QC Batch ID: B227198 Used client sample: Y- Description: FU-19W, 02/09/2026 13:20 <br /> Bicarbonate DUP 2602031-17 2787.6 2823.6 mg/L 1.3 10 18 <br /> Carbonate DUP 2602031-17 ND ND mg/L 10 18 <br /> QC Batch ID: B227519 Used client sample: Y- Description: D-01 S, 02/09/2026 11:35 <br /> Dissolved Cyanide DUP 2602031-14 0.0064470 0.0079340 mg/L 20.7 10 A02 19 <br /> MS 2602031-14 0.0064470 0.10519 0.10000 mg/L 98.7 90-110 20 <br /> MSD 2602031-14 0.0064470 0.10768 0.10000 mg/L 2.3 101 20 90-110 21 <br /> QC Batch ID: B227537 Used client sample: N <br /> Dissolved Cyanide DUP 2602110-01 0.0030960 0.0031380 mg/L 1.3 10 1 22 <br /> MS 2602110-01 0.0030960 0.10992 0.10000 mg/L 107 90-110 23 <br /> MSD 2602110-01 0.0030960 0.10971 0.10000 mg/L 0.2 107 20 90-110 24 <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: 1001665034 4100 Atlas Court Bakersfield, CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 140 of 147 <br />