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C <br /> ace Analytical <br /> ENVIRONMENTAL SCIENCES <br /> Arcadis-SLO Reported: 04/13/2026 15:17 <br /> 4119 Broad Street Suite 210 Project: Forward Landfill-COELT <br /> San Luis Obispo,CA 93401 Project Number: 30274343.01 1 Q26 Extraction Wells <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: B226770 <br /> Chloride B226770-BLK1 ND mg/L 0.50 0.13 1 <br /> Nitrate as N B226770-BLK1 ND mg/L 0.10 0.024 1 <br /> Sulfate B226770-BLKI 0.21730 mg/L 1.0 0.14 J 1 <br /> QC Batch ID: B226887 <br /> Dissolved Calcium B226887-BLK1 ND mg/L 0.10 0.016 2 <br /> Dissolved Magnesium B226887-BLK1 ND mg/L 0.050 0.022 2 <br /> Dissolved Sodium B226887-BLK1 ND mg/L 1.0 0.051 2 <br /> Dissolved Potassium B226887-BLK1 ND mg/L 1.0 0.10 2 <br /> QC Batch ID: B227055 <br /> Bicarbonate B227055-BLK1 ND mg/L 5.0 5.0 3 <br /> Carbonate B227055-BLK1 ND mg/L 2.5 2.5 3 <br /> Run <br /> Run# QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br /> 1 B226770-BLK1 PB EPA-300.0 02/05/26 02/05/26 22:48 OAE IC9 1 <br /> 2 B226887-BLK1 PB EPA-6010B 02/09/26 02/09/2618:06 JEH ICP6 1 <br /> 3 B227055-BLK1 PB EPA-310.1 02/11/26 02/11/2614:16 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: 1001665559 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 33 of 39 <br />