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C <br /> ace Analytical <br /> ENVIRONMENTAL SCIENCES <br /> Arcadis-SLO Reported: 04/13/2026 13:59 <br /> 4119 Broad Street Suite 210 Project: Forward Landfill-COELT <br /> San Luis Obispo,CA 93401 Project Number: 30274343.01 Forward Landfill <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: B226859 Used client sample: Y-Description: MW-23R, 02/02/2026 10:53 <br /> Benzene MS 2601615-01 ND 22.960 25.000 ug/L 91.8 70-130 1 <br /> MSD 2601615-01 ND 23.690 25.000 ug/L 3.1 94.8 20 70-130 2 <br /> Bromodichloromethane MS 2601615-01 ND 26.740 25.000 ug/L 107 70-130 1 <br /> MSD 2601615-01 ND 28.010 25.000 ug/L 4.6 112 20 70-130 2 <br /> Chlorobenzene MS 2601615-01 ND 25.090 25.000 ug/L 100 70-130 1 <br /> MSD 2601615-01 ND 25.820 25.000 ug/L 2.9 103 20 70-130 2 <br /> Chloroethane MS 2601615-01 ND 22.850 25.000 ug/L 91.4 70-130 1 <br /> MSD 2601615-01 ND 24.300 25.000 ug/L 6.2 97.2 20 70-130 2 <br /> 1,4-Dichlorobenzene MS 2601615-01 ND 27.740 25.000 ug/L ill 70-130 1 <br /> MSD 2601615-01 ND 28.530 25.000 ug/L 2.8 114 20 70-130 2 <br /> 1,1-Dichloroethane MS 2601615-01 ND 24.990 25.000 ug/L 100 70-130 1 <br /> MSD 2601615-01 ND 26.000 25.000 ug/L 4.0 104 20 70-130 2 <br /> 1,1-Dichloroethene MS 2601615-01 ND 29.410 25.000 ug/L 118 70-130 1 <br /> MSD 2601615-01 ND 30.330 25.000 ug/L 3.1 121 20 70-130 2 <br /> Toluene MS 2601615-01 ND 26.010 25.000 ug/L 104 70-130 1 <br /> MSD 2601615-01 ND 27.000 25.000 ug/L 3.7 108 20 70-130 2 <br /> Trichloroethene MS 2601615-01 ND 27.650 25.000 ug/L ill 70-130 1 <br /> MSD 2601615-01 ND 28.710 25.000 ug/L 3.8 115 20 70-130 2 <br /> 1,2-Dichloroethane-d4(Surrogate) MS 2601615-01 ND 11.790 10.000 ug/L 118 75-125 1 <br /> MSD 2601615-01 ND 11.820 10.000 ug/L 0.3 118 75-125 2 <br /> Toluene-d8(Surrogate) MS 2601615-01 ND 9.9300 10.000 ug/L 99.3 80-120 1 <br /> MSD 2601615-01 ND 10.020 10.000 ug/L 0.9 100 80-120 2 <br /> 4-Bromofluorobenzene(Surrogate) MS 2601615-01 ND 10.650 10.000 ug/L 106 80-120 1 <br /> MSD 2601615-01 ND 10.780 10.000 ug/L 1.2 108 80-120 2 <br /> Run <br /> Run# QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br /> 1 B226859-MS1 MS EPA-8260B 02/10/26 02/10/2616:44 RCC MS-V15 1 <br /> 2 B226859-MSD1 MSD EPA-8260B 02/10/26 02/10/2617:12 RCC MS-V15 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: 1001665505 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 78 of 87 <br />