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C <br /> ace Analytical <br /> ENVIRONMENTAL SCIENCES <br /> Arcadis-SLO Reported: 04/10/2026 15:35 <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: B227026 <br /> Dissolved Aluminum B227026-BS1 LCS 926.10 1000.0 ug/L 92.6 80-120 1 <br /> Dissolved Antimony B227026-BS1 LCS 383.00 400.00 ug/L 95.8 80-120 1 <br /> Dissolved Arsenic B227026-BS1 LCS 191.30 200.00 ug/L 95.6 80-120 1 <br /> Dissolved Barium B227026-BS1 LCS 378.10 400.00 ug/L 94.5 80-120 1 <br /> Dissolved Beryllium B227026-BS1 LCS 194.69 200.00 ug/L 97.3 80-120 1 <br /> Dissolved Cadmium B227026-BS1 LCS 202.00 200.00 ug/L 101 80-120 1 <br /> Dissolved Chromium B227026-BS1 LCS 196.40 200.00 ug/L 98.2 80-120 1 <br /> Dissolved Cobalt B227026-BS1 LCS 200.70 200.00 ug/L 100 80-120 1 <br /> Dissolved Copper B227026-BS1 LCS 375.40 400.00 ug/L 93.8 80-120 1 <br /> Dissolved Iron B227026-BS1 LCS 969.40 1000.0 ug/L 96.9 80-120 1 <br /> Dissolved Lead B227026-BS1 LCS 398.40 400.00 ug/L 99.6 80-120 1 <br /> Dissolved Manganese B227026-BS1 LCS 483.90 500.00 ug/L 96.8 80-120 1 <br /> Dissolved Molybdenum B227026-BSI LCS 199.80 200.00 ug/L 99.9 80-120 1 <br /> Dissolved Nickel B227026-BSI LCS 404.70 400.00 ug/L 101 80-120 1 <br /> Dissolved Selenium B227026-BS1 LCS 205.50 200.00 ug/L 103 80-120 1 <br /> Dissolved Silver B227026-BS1 LCS 93.700 100.00 ug/L 93.7 80-120 1 <br /> Dissolved Strontium B227026-BS1 LCS 471.10 500.00 ug/L 94.2 80-120 1 <br /> Dissolved Tin 13227026-1331 LCS 198.90 200.00 ug/L 99.4 80-120 1 <br /> Dissolved Thallium B227026-BS1 LCS 394.30 400.00 ug/L 98.6 80-120 1 <br /> Dissolved Vanadium B227026-BS1 LCS 195.70 200.00 ug/L 97.8 80-120 1 <br /> Dissolved Zinc B227026-BS1 LCS 506.50 500.00 ug/L 101 80-120 1 <br /> QC Batch ID: B227527 <br /> Dissolved Mercury B227527-BS1 LCS 1.0325 1.0000 ug/L 103 85-115 2 <br /> QC Batch ID: B227618 <br /> Dissolved Mercury B227618-BS1 LCS 1.0075 1.0000 ug/L 101 85-115 3 <br /> Run <br /> Run# QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br /> 1 B227026-BS1 LCS EPA-6010B 02/11/26 02/11/2611:38 JRG ICP6 1 <br /> 2 B227527-BS1 LCS EPA-7470A 02/19/26 02/19/2612:53 TMT CETAC4 1 <br /> 3 B227618-BS1 LCS EPA-7470A 02/20/26 02/20/2613:44 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: 1001665034 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 143 of 147 <br />