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C <br /> ace Analytical <br /> ENVIRONMENTAL SCIENCES <br /> Arcadis-SLO Reported: 04/13/2026 15:42 <br /> 4119 Broad Street Suite 210 Project: Forward Landfill-Qtrly Pan Lysimeters <br /> San Luis Obispo,CA 93401 Project Number: 30274343.01 <br /> Project Manager: Dalia Rumani <br /> Volatile Organic Analysis (EPA Method 826013) <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: B227612 <br /> Benzene B227612-BS1 LCS 19.640 25.000 ug/L 78.6 70-130 1 <br /> Bromodichloromethane B227612-BS1 LCS 28.030 25.000 ug/L 112 70-130 1 <br /> Chlorobenzene B227612-BS1 LCS 23.560 25.000 ug/L 94.2 70-130 1 <br /> Chloroethane B227612-BS1 LCS 22.020 25.000 ug/L 88.1 70-130 1 <br /> 1,4-Dichlorobenzene B227612-BS1 LCS 24.910 25.000 ug/L 99.6 70-130 1 <br /> 1,1-Dichloroethane B227612-BS1 LCS 23.420 25.000 ug/L 93.7 70-130 1 <br /> 1,1-Dichloroethene B227612-BS1 LCS 21.040 25.000 ug/L 84.2 70-130 1 <br /> Toluene B227612-BS1 LCS 22.890 25.000 ug/L 91.6 70-130 1 <br /> Trichloroethene B227612-BS1 LCS 25.490 25.000 ug/L 102 70-130 1 <br /> 1,2-Dichloroethane-d4(Surrogate) B227612-BS1 LCS 11.100 10.000 ug/L ill 75-125 1 <br /> Toluene-d8(Surrogate) B227612-BS1 LCS 10.010 10.000 ug/L 100 80-120 1 <br /> 4-Bromofluorobenzene(Surrogate) B227612-BS1 LCS 10.530 10.000 ug/L 105 80-120 1 <br /> Run <br /> Run# QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br /> 1 B227612-BS1 LCS EPA-8260B 02/20/26 02/21/26 00:26 AGB MS-V21 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: 1001665592 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 18 of 20 <br />