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C <br /> ace Analytical <br /> ENVIRONMENTAL SCIENCES <br /> Arcadis-SLO Reported: 04/13/2026 15:13 <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 /> 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: B226775 <br /> Benzene B226775-BS1 LCS 22.990 25.000 ug/L 92.0 70-130 1 <br /> Bromodichloromethane B226775-BS1 LCS 26.720 25.000 ug/L 107 70-130 1 <br /> Chlorobenzene B226775-BS1 LCS 25.170 25.000 ug/L 101 70-130 1 <br /> Chloroethane B226775-BS1 LCS 21.950 25.000 ug/L 87.8 70-130 1 <br /> 1,4-Dichlorobenzene B226775-BS1 LCS 26.960 25.000 ug/L 108 70-130 1 <br /> 1,1-Dichloroethane B226775-BS1 LCS 25.120 25.000 ug/L 100 70-130 1 <br /> 1,1-Dichloroethene B226775-BS1 LCS 28.250 25.000 ug/L 113 70-130 1 <br /> Toluene B226775-BS1 LCS 25.530 25.000 ug/L 102 70-130 1 <br /> Trichloroethene B226775-BS1 LCS 31.260 25.000 ug/L 125 70-130 1 <br /> 1,2-Dichloroethane-d4(Surrogate) B226775-BS1 LCS 10.660 10.000 ug/L 107 75-125 1 <br /> Toluene-d8(Surrogate) B226775-BS1 LCS 9.9400 10.000 ug/L 99.4 80-120 1 <br /> 4-Bromofluorobenzene(Surrogate) B226775-BS1 LCS 10.950 10.000 ug/L 110 80-120 1 <br /> Run <br /> Run# QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br /> 1 B226775-BS1 LCS EPA-8260B 02/06/26 02/07/26 05:32 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: 1001665557 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 109 of 118 <br />