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C <br /> ace Analytical <br /> ENVIRONMENTAL SCIENCES <br /> Arcadis-SLO Reported: 04/13/2026 13:59 <br /> 4119 Broad Street Suite 210 Project: Forward Landfill-COELT <br /> San Luis Obispo,CA 93401 Project Number: 30274343.01 Forward Landfill <br /> Project Manager: Dalia Rumani <br /> Water Analysis (General Chemistry) <br /> Quality Control Report - Precision & Accuracy <br /> Control Limits <br /> Source Source Spike Percent Percent Lab <br /> Constituent Type Sample ID Result Result Added Units RPD Recovery RPD Recovery Quals R# <br /> QC Batch ID: B226705 Used client sample: N <br /> Bicarbonate DUP 2601588-04 139.30 144.87 mg/L 3.9 10 10 <br /> Carbonate DUP 2601588-04 ND ND mg/L 10 10 <br /> Total Alkalinity as CaCO3 DUP 2601588-04 114.25 118.82 mg/L 3.9 10 10 <br /> QC Batch ID: B226718 Used client sample: N <br /> Total Kjeldahl Nitrogen DUP 2601597-01 2.1341 2.2715 mg/L 6.2 20 11 <br /> MS 2601597-01 2.1341 4.4133 2.0000 mg/L 114 90-110 Q03 12 <br /> MSD 2601597-01 2.1341 4.3820 2.0000 mg/L 0.7 112 20 90-110 Q03 13 <br /> QC Batch ID: 13226793 Used client sample: Y- Description: MW-14A, 02/02/2026 14:15 <br /> Bicarbonate DUP 2601615-03 418.85 428.11 mg/L 2.2 10 14 <br /> Carbonate DUP 2601615-03 ND ND mg/L 10 14 <br /> Total Alkalinity as CaCO3 DUP 2601615-03 343.52 351.12 mg/L 2.2 10 14 <br /> Run <br /> Run# QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br /> 1 B226564-DUP1 DUP EPA-300.0 02/03/26 02/03/2615:14 PRE IC5 2 <br /> 2 B226564-MS1 MS EPA-300.0 02/03/26 02/03/2611:22 OAE IC5 2.020 <br /> 3 B226564-MSD1 MSD EPA-300.0 02/03/26 02/03/2611:40 OAE IC5 2.020 <br /> 4 B226579-DUP1 DUP EPA-300.0 02/03/26 02/03/2614:01 PRE IC12 1 <br /> 5 B226579-MS1 MS EPA-300.0 02/03/26 02/03/2614:14 PRE IC12 1.010 <br /> 6 B226579-MSD1 MSD EPA-300.0 02/03/26 02/03/2614:27 PRE IC12 1.010 <br /> 7 B226629-DUP1 DUP EPA-6010B 02/04/26 02/04/26 21:35 JEH ICP6 1 <br /> 8 B226629-MS1 MS EPA-6010B 02/04/26 02/04/26 21:38 JEH ICP6 1.020 <br /> 9 B226629-MSD1 MSD EPA-6010B 02/04/26 02/04/26 21:40 JEH ICP6 1.020 <br /> 10 B226705-DUP1 DUP EPA-310.1 02/05/26 02/05/2618:03 JMH2 MET-1 1 <br /> 11 B226718-DUP1 DUP EPA-351.2 02/05/26 02/09/2612:12 JMH2 SC-1 1 <br /> 12 B226718-MS1 MS EPA-351.2 02/05/26 02/09/2612:12 JMH2 SC-1 1 <br /> 13 B226718-MSD1 MSD EPA-351.2 02/05/26 02/09/2612:14 JMH2 SC-1 1 <br /> 14 B226793-DUP1 DUP EPA-310.1 02/06/26 02/06/2610:05 JMH2 META 2 <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: 1001665505 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 83 of 87 <br />