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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: B227365 Used client sample: Y-Description: AMW-59S, 02/09/2026 10:50 <br /> 1,1-Dichloroethene MS 2602031-04 ND 21.420 25.000 ug/L 85.7 70-130 3 <br /> MSD 2602031-04 ND 20.660 25.000 ug/L 3.6 82.6 20 70-130 4 <br /> Toluene MS 2602031-04 ND 22.650 25.000 ug/L 90.6 70-130 3 <br /> MSD 2602031-04 ND 21.930 25.000 ug/L 3.2 87.7 20 70-130 4 <br /> Trichloroethene MS 2602031-04 ND 21.860 25.000 ug/L 87.4 70-130 3 <br /> MSD 2602031-04 ND 21.670 25.000 ug/L 0.9 86.7 20 70-130 4 <br /> 1,2-Dichloroethane-d4(Surrogate) MS 2602031-04 ND 11.080 10.000 ug/L ill 75-125 3 <br /> MSD 2602031-04 ND 10.610 10.000 ug/L 4.3 106 75-125 4 <br /> Toluene-d8(Surrogate) MS 2602031-04 ND 9.7900 10.000 ug/L 97.9 80-120 3 <br /> MSD 2602031-04 ND 9.8900 10.000 ug/L 1.0 98.9 80-120 4 <br /> 4-Bromofluorobenzene(Surrogate) MS 2602031-04 ND 10.600 10.000 ug/L 106 80-120 3 <br /> MSD 2602031-04 ND 10.390 10.000 ug/L 2.0 104 80-120 4 <br /> QC Batch ID: B227436 Used client sample: N <br /> Benzene MS 2602098-01 ND 28.430 25.000 ug/L 114 70-130 5 <br /> MSD 2602098-01 ND 27.930 25.000 ug/L 1.8 112 20 70-130 6 <br /> Bromodichloromethane MS 2602098-01 ND 26.030 25.000 ug/L 104 70-130 5 <br /> MSD 2602098-01 ND 25.400 25.000 ug/L 2.4 102 20 70-130 6 <br /> Chlorobenzene MS 2602098-01 ND 26.950 25.000 ug/L 108 70-130 5 <br /> MSD 2602098-01 ND 26.410 25.000 ug/L 2.0 106 20 70-130 6 <br /> Chloroethane MS 2602098-01 ND 29.910 25.000 ug/L 120 70-130 5 <br /> MSD 2602098-01 ND 29.210 25.000 ug/L 2.4 117 20 70-130 6 <br /> 1,4-Dichlorobenzene MS 2602098-01 ND 25.840 25.000 ug/L 103 70-130 5 <br /> MSD 2602098-01 ND 26.300 25.000 ug/L 1.8 105 20 70-130 6 <br /> 1,1-Dichloroethane MS 2602098-01 ND 27.330 25.000 ug/L 109 70-130 5 <br /> MSD 2602098-01 ND 26.580 25.000 ug/L 2.8 106 20 70-130 6 <br /> 1,1-Dichloroethene MS 2602098-01 ND 26.890 25.000 ug/L 108 70-130 5 <br /> MSD 2602098-01 ND 26.420 25.000 ug/L 1.8 106 20 70-130 6 <br /> Toluene MS 2602098-01 ND 26.170 25.000 ug/L 105 70-130 5 <br /> MSD 2602098-01 ND 25.590 25.000 ug/L 2.2 102 20 70-130 6 <br /> Trichloroethene MS 2602098-01 ND 25.030 25.000 ug/L 100 70-130 5 <br /> MSD 2602098-01 ND 24.820 25.000 ug/L 0.8 99.3 20 70-130 6 <br /> 1,2-Dichloroethane-d4(Surrogate) MS 2602098-01 ND 11.000 10.000 ug/L 110 75-125 5 <br /> MSD 2602098-01 ND 10.740 10.000 ug/L 2.4 107 75-125 6 <br /> Toluene-d8(Surrogate) MS 2602098-01 ND 10.350 10.000 ug/L 104 80-120 5 <br /> MSD 2602098-01 ND 10.330 10.000 ug/L 0.2 103 80-120 6 <br /> 4-Bromofluorobenzene(Surrogate) MS 2602098-01 ND 9.6500 10.000 ug/L 96.5 80-120 5 <br /> MSD 2602098-01 ND 10.130 10.000 ug/L 4.9 101 80-120 6 <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 133 of 147 <br />