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C <br /> ace Analytical <br /> ENVIRONMENTAL SCIENCES <br /> Arcadis-SLO Reported: 02/10/2026 15:31 <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 - Precision & Accuracy <br /> Control Limits <br /> Source Source Spike Percent Percent Lab <br /> Constituent Type Sample ID Result Result Added Units RPD Recovery RPD Recovery Quals R# <br /> QC Batch ID: B226787 Used client sample: N <br /> Benzene MS 2601466-02 ND 24.290 25.000 ug/L 97.2 70-130 1 <br /> MSD 2601466-02 ND 24.860 25.000 ug/L 2.3 99.4 20 70-130 2 <br /> Bromodichloromethane MS 2601466-02 ND 25.780 25.000 ug/L 103 70-130 1 <br /> MSD 2601466-02 ND 26.230 25.000 ug/L 1.7 105 20 70-130 2 <br /> Chlorobenzene MS 2601466-02 ND 25.940 25.000 ug/L 104 70-130 1 <br /> MSD 2601466-02 ND 26.160 25.000 ug/L 0.8 105 20 70-130 2 <br /> Chloroethane MS 2601466-02 ND 24.990 25.000 ug/L 100 70-130 1 <br /> MSD 2601466-02 ND 25.710 25.000 ug/L 2.8 103 20 70-130 2 <br /> 1,4-Dichlorobenzene MS 2601466-02 ND 24.940 25.000 ug/L 99.8 70-130 1 <br /> MSD 2601466-02 ND 24.840 25.000 ug/L 0.4 99.4 20 70-130 2 <br /> 1,1-Dichloroethane MS 2601466-02 ND 24.560 25.000 ug/L 98.2 70-130 1 <br /> MSD 2601466-02 ND 25.450 25.000 ug/L 3.6 102 20 70-130 2 <br /> 1,1-Dichloroethene MS 2601466-02 ND 22.060 25.000 ug/L 88.2 70-130 1 <br /> MSD 2601466-02 ND 22.800 25.000 ug/L 3.3 91.2 20 70-130 2 <br /> Toluene MS 2601466-02 ND 25.570 25.000 ug/L 102 70-130 1 <br /> MSD 2601466-02 ND 26.230 25.000 ug/L 2.5 105 20 70-130 2 <br /> Trichloroethene MS 2601466-02 ND 24.820 25.000 ug/L 99.3 70-130 1 <br /> MSD 2601466-02 ND 25.310 25.000 ug/L 2.0 101 20 70-130 2 <br /> 1,2-Dichloroethane-d4(Surrogate) MS 2601466-02 ND 10.130 10.000 ug/L 101 75-125 1 <br /> MSD 2601466-02 ND 10.020 10.000 ug/L 1.1 100 75-125 2 <br /> Toluene-d8(Surrogate) MS 2601466-02 ND 10.010 10.000 ug/L 100 80-120 1 <br /> MSD 2601466-02 ND 10.000 10.000 ug/L 0.1 100 80-120 2 <br /> 4-Bromofluorobenzene(Surrogate) MS 2601466-02 ND 9.7000 10.000 ug/L 97.0 80-120 1 <br /> MSD 2601466-02 ND 9.6000 10.000 ug/L 1.0 96.0 80-120 2 <br /> Run <br /> Run# QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br /> 1 B226787-MS1 MS EPA-8260B 02/06/26 02/06/26 23:52 TDH MS-V20 1 <br /> 2 B226787-MSD1 MSD EPA-8260B 02/06/26 02/07/26 00:17 TDH MS-V20 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: 1001653121 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 11 of 12 <br />