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C <br /> ace Analytical <br /> ENVIRONMENTAL SCIENCES <br /> Arcadis-SLO Reported: 04/13/2026 11:08 <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 - Method Blank Analysis <br /> Constituent QC Sample ID MB Result Units PQL MDL Lab Quals Run# <br /> QC Batch ID: B226466 <br /> Chloride B226466-BLK1 0.23800 mg/L 0.50 0.13 J 1 <br /> Nitrate as N B226466-BLK1 ND mg/L 0.10 0.024 1 <br /> Sulfate B226466-BLK1 ND mg/L 1.0 0.14 1 <br /> QC Batch ID: B226547 <br /> Dissolved Calcium B226547-BLK1 ND mg/L 0.10 0.016 2 <br /> Dissolved Magnesium B226547-BLK1 ND mg/L 0.050 0.022 2 <br /> Dissolved Sodium B226547-BLK1 ND mg/L 1.0 0.051 2 <br /> Dissolved Potassium B226547-BLK1 ND mg/L 1.0 0.10 2 <br /> QC Batch ID: B226703 <br /> Bicarbonate B226703-BLK1 ND mg/L 5.0 5.0 3 <br /> Carbonate B226703-BLK1 ND mg/L 2.5 2.5 3 <br /> Total Alkalinity as CaCO3 B226703-BLK1 ND mg/L 4.1 4.1 3 <br /> QC Batch ID: B226704 <br /> Bicarbonate B226704-BLK1 ND mg/L 5.0 5.0 4 <br /> Carbonate B226704-BLK1 ND mg/L 2.5 2.5 4 <br /> Total Alkalinity as CaCO3 B226704-BLK1 ND mg/L 4.1 4.1 4 <br /> Run <br /> Run# QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br /> 1 B226466-BLK1 PB EPA-300.0 01/30/26 01/30/26 22:27 PRE IC5 1 <br /> 2 B226547-BLK1 PB EPA-6010B 02/03/26 02/03/2617:10 JEH ICP6 1 <br /> 3 B226703-BLK1 PB EPA-310.1 02/05/26 02/05/2612:16 JMH2 MET-1 1 <br /> 4 B226704-BLK1 PB EPA-310.1 02/05/26 02/05/2615:12 JMH2 MET-1 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: 1001665296 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 77 of 84 <br />