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m <br /> aceAna/ytica/ <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 /> 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: B226452 Used client sample: Y- Description: AMW-57S, 01/28/2026 11:06 <br /> Dissolved Strontium DUP 2601426-01 424.80 419.70 ug/L 1.2 20 1 <br /> MS 2601426-01 424.80 920.10 510.20 ug/L 97.1 75-125 2 <br /> MSD 2601426-01 424.80 932.55 510.20 ug/L 1.3 99.5 20 75-125 3 <br /> Run <br /> Run# QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br /> 1 B226452-DUP1 DUP EPA-6010B 01/30/26 01/30/26 20:02 JEH ICP5 1 <br /> 2 B226452-MS1 MS EPA-6010B 01/30/26 01/30/26 20:05 JEH ICP5 1.020 <br /> 3 B226452-MSD1 MSD EPA-6010B 01/30/26 01/30/26 20:07 JEH ICP5 1.020 <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 97 of 98 <br />