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C <br /> ace Analytical <br /> ENVIRONMENTAL SCIENCES <br /> Arcadis-SLO Reported: 04/10/2026 15:35 <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: B227295 Used client sample: N <br /> Benzene MS 2601942-09 ND 21.970 25.000 ug/L 87.9 70-130 1 <br /> MSD 2601942-09 ND 21.350 25.000 ug/L 2.9 85.4 20 70-130 2 <br /> Bromodichloromethane MS 2601942-09 ND 24.810 25.000 ug/L 99.2 70-130 1 <br /> MSD 2601942-09 ND 23.690 25.000 ug/L 4.6 94.8 20 70-130 2 <br /> Chlorobenzene MS 2601942-09 ND 23.750 25.000 ug/L 95.0 70-130 1 <br /> MSD 2601942-09 ND 22.670 25.000 ug/L 4.7 90.7 20 70-130 2 <br /> Chloroethane MS 2601942-09 ND 25.110 25.000 ug/L 100 70-130 1 <br /> MSD 2601942-09 ND 24.290 25.000 ug/L 3.3 97.2 20 70-130 2 <br /> 1,4-Dichlorobenzene MS 2601942-09 ND 25.290 25.000 ug/L 101 70-130 1 <br /> MSD 2601942-09 ND 24.930 25.000 ug/L 1.4 99.7 20 70-130 2 <br /> 1,1-Dichloroethane MS 2601942-09 ND 23.650 25.000 ug/L 94.6 70-130 1 <br /> MSD 2601942-09 ND 23.150 25.000 ug/L 2.1 92.6 20 70-130 2 <br /> 1,1-Dichloroethene MS 2601942-09 ND 23.110 25.000 ug/L 92.4 70-130 1 <br /> MSD 2601942-09 ND 22.460 25.000 ug/L 2.9 89.8 20 70-130 2 <br /> Toluene MS 2601942-09 ND 23.600 25.000 ug/L 94.4 70-130 1 <br /> MSD 2601942-09 ND 22.540 25.000 ug/L 4.6 90.2 20 70-130 2 <br /> Trichloroethene MS 2601942-09 ND 22.100 25.000 ug/L 88.4 70-130 1 <br /> MSD 2601942-09 ND 21.550 25.000 ug/L 2.5 86.2 20 70-130 2 <br /> 1,2-Dichloroethane-d4(Surrogate) MS 2601942-09 ND 11.060 10.000 ug/L ill 75-125 1 <br /> MSD 2601942-09 ND 11.360 10.000 ug/L 2.7 114 75-125 2 <br /> Toluene-d8(Surrogate) MS 2601942-09 ND 10.080 10.000 ug/L 101 80-120 1 <br /> MSD 2601942-09 ND 9.9500 10.000 ug/L 1.3 99.5 80-120 2 <br /> 4-Bromofluorobenzene(Surrogate) MS 2601942-09 ND 10.660 10.000 ug/L 107 80-120 1 <br /> MSD 2601942-09 ND 10.440 10.000 ug/L 2.1 104 80-120 2 <br /> QC Batch ID: B227365 Used client sample: Y-Description: AMW-59S, 02/09/2026 10:50 <br /> Benzene MS 2602031-04 ND 20.280 25.000 ug/L 81.1 70-130 3 <br /> MSD 2602031-04 ND 19.590 25.000 ug/L 3.5 78.4 20 70-130 4 <br /> Bromodichloromethane MS 2602031-04 ND 24.620 25.000 ug/L 98.5 70-130 3 <br /> MSD 2602031-04 ND 23.930 25.000 ug/L 2.8 95.7 20 70-130 4 <br /> Chlorobenzene MS 2602031-04 ND 23.040 25.000 ug/L 92.2 70-130 3 <br /> MSD 2602031-04 ND 22.420 25.000 ug/L 2.7 89.7 20 70-130 4 <br /> Chloroethane MS 2602031-04 ND 23.160 25.000 ug/L 92.6 70-130 3 <br /> MSD 2602031-04 ND 21.790 25.000 ug/L 6.1 87.2 20 70-130 4 <br /> 1,4-Dichlorobenzene MS 2602031-04 ND 24.890 25.000 ug/L 99.6 70-130 3 <br /> MSD 2602031-04 ND 23.330 25.000 ug/L 6.5 93.3 20 70-130 4 <br /> 1,1-Dichloroethane MS 2602031-04 ND 22.370 25.000 ug/L 89.5 70-130 3 <br /> MSD 2602031-04 ND 21.590 25.000 ug/L 3.5 86.4 20 70-130 4 <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: 1001665034 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 132 of 147 <br />