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C <br /> ace Analytical <br /> ENVIRONMENTAL SCIENCES <br /> Arcadis-SLO Reported: 04/14/2026 12:02 <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: B227065 Used client sample: Y-Description: MW-16, 02/03/2026 10:21 <br /> Benzene MS 2601733-01 ND 20.770 25.000 ug/L 83.1 70-130 1 <br /> MSD 2601733-01 ND 20.800 25.000 ug/L 0.1 83.2 20 70-130 2 <br /> Bromodichloromethane MS 2601733-01 ND 20.490 25.000 ug/L 82.0 70-130 1 <br /> MSD 2601733-01 ND 20.810 25.000 ug/L 1.5 83.2 20 70-130 2 <br /> Chlorobenzene MS 2601733-01 ND 22.580 25.000 ug/L 90.3 70-130 1 <br /> MSD 2601733-01 ND 22.930 25.000 ug/L 1.5 91.7 20 70-130 2 <br /> Chloroethane MS 2601733-01 ND 21.280 25.000 ug/L 85.1 70-130 1 <br /> MSD 2601733-01 ND 21.460 25.000 ug/L 0.8 85.8 20 70-130 2 <br /> 1,4-Dichlorobenzene MS 2601733-01 ND 25.350 25.000 ug/L 101 70-130 1 <br /> MSD 2601733-01 ND 25.330 25.000 ug/L 0.1 101 20 70-130 2 <br /> 1,1-Dichloroethane MS 2601733-01 ND 20.220 25.000 ug/L 80.9 70-130 1 <br /> MSD 2601733-01 ND 20.320 25.000 ug/L 0.5 81.3 20 70-130 2 <br /> 1,1-Dichloroethene MS 2601733-01 ND 23.030 25.000 ug/L 92.1 70-130 1 <br /> MSD 2601733-01 ND 23.140 25.000 ug/L 0.5 92.6 20 70-130 2 <br /> Toluene MS 2601733-01 ND 22.380 25.000 ug/L 89.5 70-130 1 <br /> MSD 2601733-01 ND 22.460 25.000 ug/L 0.4 89.8 20 70-130 2 <br /> Trichloroethene MS 2601733-01 ND 21.940 25.000 ug/L 87.8 70-130 1 <br /> MSD 2601733-01 ND 22.300 25.000 ug/L 1.6 89.2 20 70-130 2 <br /> 1,2-Dichloroethane-d4(Surrogate) MS 2601733-01 ND 7.8500 10.000 ug/L 78.5 75-125 1 <br /> MSD 2601733-01 ND 7.7900 10.000 ug/L 0.8 77.9 75-125 2 <br /> Toluene-d8(Surrogate) MS 2601733-01 ND 9.2700 10.000 ug/L 92.7 80-120 1 <br /> MSD 2601733-01 ND 9.2400 10.000 ug/L 0.3 92.4 80-120 2 <br /> 4-Bromofluorobenzene(Surrogate) MS 2601733-01 ND 10.380 10.000 ug/L 104 80-120 1 <br /> MSD 2601733-01 ND 10.290 10.000 ug/L 0.9 103 80-120 2 <br /> Run <br /> Run# QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br /> 1 B227065-MS1 MS EPA-8260B 02/11/26 02/11/2613:19 AGB MS-V21 1 <br /> 2 B227065-MSD1 MSD EPA-8260B 02/11/26 02/11/2613:45 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: 1001665842 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 96 of 109 <br />