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C <br /> ace Analytical <br /> ENVIRONMENTAL SCIENCES <br /> Arcadis-SLO Reported: 02/20/2026 17:41 <br /> 4119 Broad Street Suite 210 Project: Forward Landfill-COELT <br /> San Luis Obispo,CA 93401 Project Number: 30274343.01 1 Q26 Surface Water <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: B227340 <br /> Benzene B227340-BS1 LCS 28.910 25.000 ug/L 116 70-130 1 <br /> Bromodichloromethane B227340-BS1 LCS 26.040 25.000 ug/L 104 70-130 1 <br /> Chlorobenzene B227340-BS1 LCS 24.060 25.000 ug/L 96.2 70-130 1 <br /> Chloroethane B227340-BS1 LCS 28.770 25.000 ug/L 115 70-130 1 <br /> 1,4-Dichlorobenzene B227340-BS1 LCS 24.030 25.000 ug/L 96.1 70-130 1 <br /> 1,1-Dichloroethane B227340-BS1 LCS 27.530 25.000 ug/L 110 70-130 1 <br /> 1,1-Dichloroethene B227340-BS1 LCS 29.720 25.000 ug/L 119 70-130 1 <br /> Toluene B227340-BS1 LCS 26.890 25.000 ug/L 108 70-130 1 <br /> Trichloroethene B227340-BS1 LCS 26.640 25.000 ug/L 107 70-130 1 <br /> 1,2-Dichloroethane-d4(Surrogate) B227340-BS1 LCS 11.680 10.000 ug/L 117 75-125 1 <br /> Toluene-d8(Surrogate) B227340-BS1 LCS 10.510 10.000 ug/L 105 80-120 1 <br /> 4-Bromofluorobenzene(Surrogate) B227340-BS1 LCS 9.9400 10.000 ug/L 99.4 80-120 1 <br /> Run <br /> Run# QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br /> 1 B227340-BS1 LCS EPA-8260B 02/17/26 02/18/26 04:59 RCC MS-V15 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: 1001655256 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 23 of 31 <br />