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C <br /> ace Analytical <br /> ENVIRONMENTAL SCIENCES <br /> Arcadis-SLO Reported: 04/13/2026 11:37 <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: B226735 <br /> Chloride B226735-BS1 LCS 50.452 50.000 mg/L 101 90-110 1 <br /> Nitrate as N B226735-BS1 LCS 4.9422 5.0000 mg/L 98.8 90-110 1 <br /> Sulfate B226735-BS1 LCS 97.828 100.00 mg/L 97.8 90-110 1 <br /> QC Batch ID: B226896 <br /> Dissolved Sulfide B226896-BS1 LCS 0.48858 0.50000 mg/L 97.7 90-110 2 <br /> B226896-BSD1 LCSD 0.48255 0.50000 mg/L 96.5 1.2 90-110 200 3 <br /> QC Batch ID: B227024 <br /> Dissolved Calcium B227024-BS1 LCS 10.182 10.000 mg/L 102 80-120 4 <br /> Dissolved Magnesium B227024-BS1 LCS 9.9241 10.000 mg/L 99.2 80-120 4 <br /> Dissolved Sodium B227024-BS1 LCS 9.9229 10.000 mg/L 99.2 80-120 4 <br /> Dissolved Potassium B227024-BS1 LCS 9.6529 10.000 mg/L 96.5 80-120 4 <br /> QC Batch ID: B227367 <br /> Dissolved Cyanide B227367-BS1 LCS 0.15152 0.15000 mg/L 101 90-110 5 <br /> Run <br /> Run# QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br /> 1 B226735-BS1 LCS EPA-300.0 02/06/26 02/06/2613:53 PRE IC12 1 <br /> 2 B226896-BS1 LCS SM-450OSD 02/09/26 02/09/2611:45 JT3 SPEC06 1 <br /> 3 B226896-BSD1 LCSD SM-450OSD 02/09/26 02/09/2611:45 JT3 SPEC06 1 <br /> 4 B227024-BS1 LCS EPA-6010B 02/11/26 02/11/2610:21 NW1 ICP5 1 <br /> 5 B227367-BSI LCS EPA-9010C 02/17/26 02/19/2616:34 RC1 KONE-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: 1001665326 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 36 of 44 <br />