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m <br /> aceAna/ytica/ <br /> ENVIRONMENTAL SCIENCES <br /> Arcadis-SLO Reported: 02/20/2026 12:29 <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 /> 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: B227024 Used client sample: Y- Description: AMW-33, 02/05/2026 17:18 <br /> Dissolved Strontium DUP 2601989-01 939.90 942.40 ug/L 0.3 20 1 <br /> MS 2601989-01 939.90 1448.0 510.20 ug/L 99.6 75-125 2 <br /> MSD 2601989-01 939.90 1448.6 510.20 ug/L 0.0 99.7 20 75-125 3 <br /> Run <br /> Run# QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br /> 1 B227024-DUP1 DUP EPA-6010B 02/11/26 02/11/2610:24 NW1 ICP5 1 <br /> 2 B227024-MS1 MS EPA-6010B 02/11/26 02/11/2610:27 NW1 ICP5 1.020 <br /> 3 B227024-MSD1 MSD EPA-6010B 02/11/26 02/11/2610:29 NW1 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: 1001655038 4100 Atlas Court Bakersfield, CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 33 of 34 <br />