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C <br /> ace Analytical <br /> ENVIRONMENTAL SCIENCES <br /> Arcadis-SLO Reported: 02/20/2026 17:43 <br /> 4119 Broad Street Suite 210 Project: Forward Landfill 8260 <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: B227362 Used client sample: N <br /> Benzene MS 2602024-01 ND 27.320 25.000 ug/L 109 70-130 1 <br /> MSD 2602024-01 ND 27.040 25.000 ug/L 1.0 108 20 70-130 2 <br /> Bromodichloromethane MS 2602024-01 ND 24.430 25.000 ug/L 97.7 70-130 1 <br /> MSD 2602024-01 ND 24.100 25.000 ug/L 1.4 96.4 20 70-130 2 <br /> Chlorobenzene MS 2602024-01 ND 25.200 25.000 ug/L 101 70-130 1 <br /> MSD 2602024-01 ND 25.370 25.000 ug/L 0.7 101 20 70-130 2 <br /> Chloroethane MS 2602024-01 ND 28.530 25.000 ug/L 114 70-130 1 <br /> MSD 2602024-01 ND 28.310 25.000 ug/L 0.8 113 20 70-130 2 <br /> 1,4-Dichlorobenzene MS 2602024-01 ND 24.260 25.000 ug/L 97.0 70-130 1 <br /> MSD 2602024-01 ND 25.020 25.000 ug/L 3.1 100 20 70-130 2 <br /> 1,1-Dichloroethane MS 2602024-01 ND 26.050 25.000 ug/L 104 70-130 1 <br /> MSD 2602024-01 ND 25.820 25.000 ug/L 0.9 103 20 70-130 2 <br /> 1,1-Dichloroethene MS 2602024-01 ND 25.630 25.000 ug/L 103 70-130 1 <br /> MSD 2602024-01 ND 25.610 25.000 ug/L 0.1 102 20 70-130 2 <br /> Toluene MS 2602024-01 ND 24.690 25.000 ug/L 98.8 70-130 1 <br /> MSD 2602024-01 ND 24.660 25.000 ug/L 0.1 98.6 20 70-130 2 <br /> Trichloroethene MS 2602024-01 ND 23.720 25.000 ug/L 94.9 70-130 1 <br /> MSD 2602024-01 ND 23.850 25.000 ug/L 0.5 95.4 20 70-130 2 <br /> 1,2-Dichloroethane-d4(Surrogate) MS 2602024-01 ND 10.670 10.000 ug/L 107 75-125 1 <br /> MSD 2602024-01 ND 10.890 10.000 ug/L 2.0 109 75-125 2 <br /> Toluene-d8(Surrogate) MS 2602024-01 ND 10.410 10.000 ug/L 104 80-120 1 <br /> MSD 2602024-01 ND 10.430 10.000 ug/L 0.2 104 80-120 2 <br /> 4-Bromofluorobenzene(Surrogate) MS 2602024-01 ND 9.7000 10.000 ug/L 97.0 80-120 1 <br /> MSD 2602024-01 ND 10.080 10.000 ug/L 3.8 101 80-120 2 <br /> Run <br /> Run# QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br /> 1 B227362-MS1 MS EPA-8260B 02/17/26 02/18/26 01:56 TDH MS-V20 1 <br /> 2 B227362-MSD1 MSD EPA-8260B 02/17/26 02/18/26 02:22 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: 1001655260 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 29 of 30 <br />