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C <br /> ace Analytical <br /> ENVIRONMENTAL SCIENCES <br /> Arcadis-SLO Reported: 04/14/2026 11:46 <br /> 4119 Broad Street Suite 210 Project: Forward Landfill-COELT <br /> San Luis Obispo,CA 93401 Project Number: 30274343.01 1Q26 Groundwater Monitoring Wells <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: B226784 <br /> Chloride B226784-BS1 LCS 49.923 50.000 mg/L 99.8 90-110 1 <br /> Nitrate as N B226784-BS1 LCS 4.9800 5.0000 mg/L 99.6 90-110 1 <br /> Sulfate B226784-BS1 LCS 99.569 100.00 mg/L 99.6 90-110 1 <br /> QC Batch ID: B226785 <br /> Chloride B226785-BS1 LCS 50.354 50.000 mg/L 101 90-110 2 <br /> Nitrate as N B226785-BS1 LCS 5.0370 5.0000 mg/L 101 90-110 2 <br /> Sulfate B226785-BS1 LCS 100.12 100.00 mg/L 100 90-110 2 <br /> QC Batch ID: B226888 <br /> Dissolved Calcium B226888-BS1 LCS 9.7620 10.000 mg/L 97.6 80-120 3 <br /> Dissolved Magnesium B226888-BS1 LCS 9.0001 10.000 mg/L 90.0 80-120 3 <br /> Dissolved Sodium B226888-BS1 LCS 9.6994 10.000 mg/L 97.0 80-120 3 <br /> Dissolved Potassium B226888-BS1 LCS 9.6630 10.000 mg/L 96.6 80-120 3 <br /> QC Batch ID: B226896 <br /> Dissolved Sulfide B226896-BS1 LCS 0.48858 0.50000 mg/L 97.7 90-110 4 <br /> B226896-BSD1 LCSD 0.48255 0.50000 mg/L 96.5 1.2 90-110 200 5 <br /> QC Batch ID: B227221 <br /> Dissolved Cyanide B227221-BS1 LCS 0.14166 0.15000 mg/L 94.4 90-110 6 <br /> Run <br /> Run# QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br /> 1 B226784-BS1 LCS EPA-300.0 02/06/26 02/06/2610:11 OAE IC5 1 <br /> 2 B226785-BSI LCS EPA-300.0 02/06/26 02/06/2615:15 PRE IC5 1 <br /> 3 B226888-BS1 LCS EPA-6010B 02/09/26 02/09/26 20:52 JEH ICP6 1 <br /> 4 B226896-BS1 LCS SM-450OSD 02/09/26 02/09/2611:45 JT3 SPEC06 1 <br /> 5 B226896-BSD1 LCSD SM-450OSD 02/09/26 02/09/2611:45 JT3 SPEC06 1 <br /> 6 B227221-BS1 LCS EPA-9010C 02/13/26 02/13/2615:12 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 1001665835 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 109 of 116 <br />