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C <br /> ace Analytical <br /> ENVIRONMENTAL SCIENCES <br /> Arcadis-SLO Reported: 02/13/2026 16:34 <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: B226354 <br /> Chloride B226354-BS1 LCS 51.642 50.000 mg/L 103 90-110 1 <br /> Nitrate as N B226354-BS1 LCS 5.0190 5.0000 mg/L 100 90-110 1 <br /> Sulfate B226354-BS1 LCS 103.76 100.00 mg/L 104 90-110 1 <br /> QC Batch ID: B226355 <br /> Chloride B226355-BS1 LCS 50.340 50.000 mg/L 101 90-110 2 <br /> Nitrate as N B226355-BS1 LCS 4.9370 5.0000 mg/L 98.7 90-110 2 <br /> Sulfate B226355-BS1 LCS 101.01 100.00 mg/L 101 90-110 2 <br /> QC Batch ID: B226452 <br /> Dissolved Calcium B226452-BS1 LCS 10.101 10.000 mg/L 101 80-120 3 <br /> Dissolved Magnesium B226452-BS1 LCS 10.095 10.000 mg/L 101 80-120 3 <br /> Dissolved Sodium B226452-BS1 LCS 9.8267 10.000 mg/L 98.3 80-120 3 <br /> Dissolved Potassium B226452-BS1 LCS 9.7863 10.000 mg/L 97.9 80-120 3 <br /> QC Batch ID: B226484 <br /> Total Alkalinity as CaCO3 B226484-BS3 LCS 105.28 100.00 mg/L 105 90-110 4 <br /> QC Batch ID: B226485 <br /> Total Alkalinity as CaCO3 B226485-BS3 LCS 104.97 100.00 mg/L 105 90-110 5 <br /> QC Batch ID: B226525 <br /> Total Dissolved Solids @ 180 C B226525-BS1 LCS 550.00 586.00 mg/L 93.9 90-110 6 <br /> QC Batch ID: B226526 <br /> Total Dissolved Solids @ 180 C B226526-BS1 LCS 585.00 586.00 mg/L 99.8 90-110 7 <br /> Run <br /> Run# QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br /> 1 B226354-BS1 LCS EPA-300.0 01/29/26 01/29/2609:47 OAE IC7 1 <br /> 2 B226355-BS1 LCS EPA-300.0 01/29/26 01/29/2614:51 PRE IC7 1 <br /> 3 B226452-BS1 LCS EPA-6010B 01/30/26 01/30/2619:59 JEH ICP5 1 <br /> 4 B226484-BS3 LCS EPA-310.1 02/02/26 02/02/2612:04 JMH2 MET-1 1 <br /> 5 B226485-BS3 LCS EPA-310.1 02/02/26 02/02/2614:09 JMH2 MET-1 1 <br /> 6 B226525-BS1 LCS EPA-160.1 02/02/26 02/02/2615:23 RLH MANUAL 5 <br /> 7 B226526-BSI LCS EPA-160.1 02/02/26 02/02/2615:24 RLH MANUAL 5 <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: 1001653944 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 92 of 98 <br />