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C <br /> ace Analytical <br /> ENVIRONMENTAL SCIENCES <br /> Arcadis-SLO Reported: 04/13/2026 11:37 <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 - 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: B227024 <br /> Dissolved Aluminum B227024-BS1 LCS 973.50 1000.0 ug/L 97.4 80-120 1 <br /> Dissolved Antimony B227024-BS1 LCS 394.40 400.00 ug/L 98.6 80-120 1 <br /> Dissolved Arsenic B227024-BS1 LCS 199.80 200.00 ug/L 99.9 80-120 1 <br /> Dissolved Barium B227024-BS1 LCS 396.50 400.00 ug/L 99.1 80-120 1 <br /> Dissolved Beryllium B227024-BS1 LCS 203.68 200.00 ug/L 102 80-120 1 <br /> Dissolved Cadmium B227024-BS1 LCS 213.40 200.00 ug/L 107 80-120 1 <br /> Dissolved Chromium B227024-BS1 LCS 204.60 200.00 ug/L 102 80-120 1 <br /> Dissolved Cobalt B227024-BS1 LCS 210.40 200.00 ug/L 105 80-120 1 <br /> Dissolved Copper B227024-BS1 LCS 399.30 400.00 ug/L 99.8 80-120 1 <br /> Dissolved Iron B227024-BS1 LCS 1018.7 1000.0 ug/L 102 80-120 1 <br /> Dissolved Lead B227024-BS1 LCS 420.20 400.00 ug/L 105 80-120 1 <br /> Dissolved Manganese B227024-BS1 LCS 511.20 500.00 ug/L 102 80-120 1 <br /> Dissolved Molybdenum B227024-BSI LCS 206.70 200.00 ug/L 103 80-120 1 <br /> Dissolved Nickel B227024-BSI LCS 423.10 400.00 ug/L 106 80-120 1 <br /> Dissolved Selenium B227024-BS1 LCS 205.80 200.00 ug/L 103 80-120 1 <br /> Dissolved Silver B227024-BS1 LCS 98.300 100.00 ug/L 98.3 80-120 1 <br /> Dissolved Tin B227024-BS1 LCS 209.10 200.00 ug/L 105 80-120 1 <br /> Dissolved Thallium B227024-BS1 LCS 415.10 400.00 ug/L 104 80-120 1 <br /> Dissolved Vanadium B227024-BS1 LCS 204.20 200.00 ug/L 102 80-120 1 <br /> Dissolved Zinc B227024-BS1 LCS 533.00 500.00 ug/L 107 80-120 1 <br /> QC Batch ID: B227448 <br /> Dissolved Mercury B227448-BS1 LCS 0.95750 1.0000 ug/L 95.8 85-115 2 <br /> QC Batch ID: B227527 <br /> Dissolved Mercury B227527-BS1 LCS 1.0325 1.0000 ug/L 103 85-115 3 <br /> Run <br /> Run# QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br /> 1 B227024-BSI LCS EPA-6010B 02/11/26 02/11/2610:21 NW1 ICP5 1 <br /> 2 B227448-BS1 LCS EPA-7470A 02/18/26 02/18/2616:33 TMT CETAC4 1 <br /> 3 B227527-BS1 LCS EPA-7470A 02/19/26 02/19/2612:53 TMT CETAC4 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: 1001665326 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 40 of 44 <br />