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C <br /> ace Analytical <br /> ENVIRONMENTAL SCIENCES <br /> Arcadis-SLO Reported: 04/14/2026 9:09 <br /> 4119 Broad Street Suite 210 Project: Forward Landfill-COELT <br /> San Luis Obispo,CA 93401 Project Number: Forward Landfill <br /> Project Manager: Dalia Rumani <br /> Metals Analysis <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: B226810 Used client sample: Y-Description: AMW-14, 02/04/2026 10:01 <br /> Dissolved Barium DUP 2601809-01 149.90 150.10 ug/L 0.1 20 1 <br /> MS 2601809-01 149.90 574.08 408.16 ug/L 104 75-125 2 <br /> MSD 2601809-01 149.90 573.88 408.16 ug/L 0.0 104 20 75-125 3 <br /> Dissolved Strontium DUP 2601809-01 556.60 557.50 ug/L 0.2 20 1 <br /> MS 2601809-01 556.60 1091.4 510.20 ug/L 105 75-125 2 <br /> MSD 2601809-01 556.60 1092.3 510.20 ug/L 0.1 105 20 75-125 3 <br /> QC Batch ID: B226850 Used client sample: N <br /> Total Iron DUP 2601690-02 ND ND ug/L 20 4 <br /> MS 2601690-02 ND 1150.4 1000.0 ug/L 115 75-125 5 <br /> MSD 2601690-02 ND 1024.5 1000.0 ug/L 11.6 102 20 75-125 6 <br /> Total Manganese DUP 2601690-02 ND ND ug/L 20 7 <br /> MS 2601690-02 ND 537.10 500.00 ug/L 107 75-125 8 <br /> MSD 2601690-02 ND 527.60 500.00 ug/L 1.8 106 20 75-125 9 <br /> Run <br /> Run# QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br /> 1 B226810-DUP1 DUP EPA-6010B 02/06/26 02/09/26 20:16 JEH ICP6 1 <br /> 2 B226810-MS1 MS EPA-6010B 02/06/26 02/09/26 20:19 JEH ICP6 1.020 <br /> 3 B226810-MSD1 MSD EPA-6010B 02/06/26 02/09/26 20:21 JEH ICP6 1.020 <br /> 4 B226850-DUP2 DUP EPA-6010B 02/06/26 02/09/26 20:06 JEH ICP5 1 <br /> 5 B226850-MS2 MS EPA-6010B 02/06/26 02/09/26 20:09 JEH ICP5 1 <br /> 6 B226850-MSD2 MSD EPA-6010B 02/06/26 02/09/26 20:11 JEH ICP5 1 <br /> 7 B226850-DUP1 DUP EPA-6010B 02/06/26 02/09/2615:55 JEH ICP5 1 <br /> 8 B226850-MS1 MS EPA-6010B 02/06/26 02/09/2615:59 JEH ICP5 1 <br /> 9 B226850-MSD1 MSD EPA-6010B 02/06/26 02/09/2616:00 JEH ICP5 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: 1001665792 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 94 of 95 <br />