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C <br /> ace Analytical <br /> ENVIRONMENTAL SCIENCES <br /> Arcadis-SLO Reported: 02/20/2026 12:20 <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 - 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: B226945 <br /> Chloride B226945-BSI LCS 52.100 50.000 mg/L 104 90-110 1 <br /> Nitrate as N B226945-BS1 LCS 5.1670 5.0000 mg/L 103 90-110 1 <br /> Sulfate B226945-BS1 LCS 103.32 100.00 mg/L 103 90-110 1 <br /> QC Batch ID: B227024 <br /> Dissolved Calcium B227024-BS1 LCS 10.182 10.000 mg/L 102 80-120 2 <br /> Dissolved Magnesium B227024-BS1 LCS 9.9241 10.000 mg/L 99.2 80-120 2 <br /> Dissolved Sodium B227024-BS1 LCS 9.9229 10.000 mg/L 99.2 80-120 2 <br /> Dissolved Potassium B227024-BS1 LCS 9.6529 10.000 mg/L 96.5 80-120 2 <br /> Run <br /> Run# QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br /> 1 B226945-BS1 LCS EPA-300.0 02/10/26 02/10/2610:57 OAE IC2 1 <br /> 2 B227024-BS1 LCS EPA-6010B 02/11/26 02/11/2610:21 NW1 ICP5 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: 1001655036 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 19 of 24 <br />