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C <br /> ace Analytical <br /> ENVIRONMENTAL SCIENCES <br /> Arcadis-SLO Reported: 04/13/2026 11:08 <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: B226787 <br /> Benzene B226787-BS1 LCS 23.000 25.000 ug/L 92.0 70-130 1 <br /> Bromodichloromethane B226787-BS1 LCS 24.430 25.000 ug/L 97.7 70-130 1 <br /> Chlorobenzene B226787-BS1 LCS 24.950 25.000 ug/L 99.8 70-130 1 <br /> Chloroethane B226787-BS1 LCS 23.890 25.000 ug/L 95.6 70-130 1 <br /> 1,4-Dichlorobenzene B226787-BS1 LCS 24.900 25.000 ug/L 99.6 70-130 1 <br /> 1,1-Dichloroethane B226787-BS1 LCS 23.690 25.000 ug/L 94.8 70-130 1 <br /> 1,1-Dichloroethene B226787-BS1 LCS 21.610 25.000 ug/L 86.4 70-130 1 <br /> Toluene B226787-BS1 LCS 24.850 25.000 ug/L 99.4 70-130 1 <br /> Trichloroethene B226787-BS1 LCS 24.650 25.000 ug/L 98.6 70-130 1 <br /> 1,2-Dichloroethane-d4(Surrogate) B226787-BS1 LCS 10.180 10.000 ug/L 102 75-125 1 <br /> Toluene-d8(Surrogate) B226787-BS1 LCS 10.050 10.000 ug/L 100 80-120 1 <br /> 4-Bromofluorobenzene(Surrogate) B226787-BS1 LCS 9.8800 10.000 ug/L 98.8 80-120 1 <br /> QC Batch ID: B226884 <br /> Benzene B226884-BS1 LCS 26.800 25.000 ug/L 107 70-130 2 <br /> Bromodichloromethane B226884-BS1 LCS 23.950 25.000 ug/L 95.8 70-130 2 <br /> Chlorobenzene B226884-BS1 LCS 25.070 25.000 ug/L 100 70-130 2 <br /> Chloroethane B226884-BS1 LCS 26.840 25.000 ug/L 107 70-130 2 <br /> 1,4-Dichlorobenzene B226884-BS1 LCS 30.220 25.000 ug/L 121 70-130 2 <br /> 1,1-Dichloroethane B226884-BS1 LCS 26.430 25.000 ug/L 106 70-130 2 <br /> 1,1-Dichloroethene B226884-BS1 LCS 26.930 25.000 ug/L 108 70-130 2 <br /> Toluene B226884-BS1 LCS 25.090 25.000 ug/L 100 70-130 2 <br /> Trichloroethene B226884-BS1 LCS 24.820 25.000 ug/L 99.3 70-130 2 <br /> 1,2-Dichloroethane-d4(Surrogate) B226884-BS1 LCS 10.580 10.000 ug/L 106 75-125 2 <br /> Toluene-d8(Surrogate) B226884-BS1 LCS 10.020 10.000 ug/L 100 80-120 2 <br /> 4-Bromofluorobenzene(Surrogate) B226884-BS1 LCS 10.920 10.000 ug/L 109 80-120 2 <br /> Run <br /> Run# QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br /> 1 B226787-BS1 LCS EPA-8260B 02/06/26 02/06/26 23:27 TDH MS-V20 1 <br /> 2 B226884-BS1 LCS EPA-8260B 02/09/26 02/09/2612:25 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: 1001665296 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 74 of 84 <br />