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C <br /> ace Analytical <br /> ENVIRONMENTAL SCIENCES <br /> Arcadis-SLO Reported: 02/20/2026 17:41 <br /> 4119 Broad Street Suite 210 Project: Forward Landfill-COELT <br /> San Luis Obispo,CA 93401 Project Number: 30274343.01 1 Q26 Surface Water <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: B226849 <br /> Chloride B226849-BSI LCS 50.155 50.000 mg/L 100 90-110 1 <br /> Nitrate as N B226849-BS1 LCS 4.9075 5.0000 mg/L 98.2 90-110 1 <br /> Sulfate B226849-BS1 LCS 101.41 100.00 mg/L 101 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 /> QC Batch ID: B227127 <br /> Total Suspended Solids(Glass B227127-BS1 LCS 192.00 200.00 mg/L 96.0 90-110 3 <br /> Fiber) <br /> Run <br /> Run# QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br /> 1 B226849-BS1 LCS EPA-300.0 02/06/26 02/06/2619:46 PRE IC9 1 <br /> 2 B227024-BS1 LCS EPA-6010B 02/11/26 02/11/2610:21 NW1 ICP5 1 <br /> 3 B227127-BS1 LCS EPA-160.2 02/11/26 02/11/2613:00 TJV MANUAL 20 <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: 1001655256 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 28 of 31 <br />