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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 - Laboratory Control Sample <br /> Control Limits <br /> Spike Percent Percent Lab <br /> Constituent QC Sample ID Type Result Level Units Recovery RPD Recovery RPD Quals Run# <br /> QC Batch ID: B226610 <br /> Total Iron B226610-BS1 LCS 1053.8 1000.0 ug/L 105 80-120 1 <br /> Total Manganese B226610-BS1 LCS 519.00 500.00 ug/L 104 80-120 1 <br /> QC Batch ID: B226629 <br /> Dissolved Barium B226629-BS1 LCS 397.50 400.00 ug/L 99.4 80-120 2 <br /> Dissolved Strontium B226629-BS1 LCS 492.10 500.00 ug/L 98.4 80-120 2 <br /> Run <br /> Run# QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br /> 1 B226610-BS1 LCS EPA-6010B 02/03/26 02/04/2613:39 NW1 ICP6 1 <br /> 2 B226629-BS1 LCS EPA-6010B 02/04/26 02/04/26 21:32 JEH ICP6 1 <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 85 of 87 <br />