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C <br /> ace Analytical <br /> ENVIRONMENTAL SCIENCES <br /> Arcadis-SLO Reported: 04/13/2026 13:59 <br /> 4119 Broad Street Suite 210 Project: Forward Landfill-COELT <br /> San Luis Obispo,CA 93401 Project Number: 30274343.01 Forward Landfill <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: B226610 Used client sample: N <br /> Total Iron DUP 2601484-01 35.600 37.900 ug/L 6.3 20 J 1 <br /> MS 2601484-01 35.600 1049.8 1000.0 ug/L 101 75-125 2 <br /> MSD 2601484-01 35.600 1032.2 1000.0 ug/L 1.7 99.7 20 75-125 3 <br /> Total Manganese DUP 2601484-01 ND ND ug/L 20 1 <br /> MS 2601484-01 ND 506.40 500.00 ug/L 101 75-125 2 <br /> MSD 2601484-01 ND 501.30 500.00 ug/L 1.0 100 20 75-125 3 <br /> QC Batch ID: B226629 Used client sample: Y-Description: MW-23R, 02/02/2026 10:53 <br /> Dissolved Barium DUP 2601615-01 57.900 57.900 ug/L 0 20 4 <br /> MS 2601615-01 57.900 424.69 408.16 ug/L 89.9 75-125 5 <br /> MSD 2601615-01 57.900 426.12 408.16 ug/L 0.3 90.2 20 75-125 6 <br /> Dissolved Strontium DUP 2601615-01 778.10 778.80 ug/L 0.1 20 4 <br /> MS 2601615-01 778.10 1237.3 510.20 ug/L 90.0 75-125 5 <br /> MSD 2601615-01 778.10 1238.3 510.20 ug/L 0.1 90.2 20 75-125 6 <br /> Run <br /> Run# QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br /> 1 B226610-DUP1 DUP EPA-6010B 02/03/26 02/04/2613:42 NW1 ICP6 1 <br /> 2 B226610-MS1 MS EPA-6010B 02/03/26 02/04/2613:45 NW1 ICP6 1 <br /> 3 B226610-MSD1 MSD EPA-6010B 02/03/26 02/04/2613:47 NW1 ICP6 1 <br /> 4 B226629-DUP1 DUP EPA-6010B 02/04/26 02/04/26 21:35 JEH ICP6 1 <br /> 5 B226629-MS1 MS EPA-6010B 02/04/26 02/04/26 21:38 JEH ICP6 1.020 <br /> 6 B226629-MSD1 MSD EPA-6010B 02/04/26 02/04/26 21:40 JEH ICP6 1.020 <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: 1001665505 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 86 of 87 <br />