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C <br /> ace Analytical <br /> ENVIRONMENTAL SCIENCES <br /> Arcadis-SLO Reported: 04/13/2026 15:42 <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: B227440 Used client sample: N <br /> Benzene MS 2602132-01 ND 20.000 25.000 ug/L 80.0 70-130 1 <br /> MSD 2602132-01 ND 20.940 25.000 ug/L 4.6 83.8 20 70-130 2 <br /> Bromodichloromethane MS 2602132-01 ND 25.940 25.000 ug/L 104 70-130 1 <br /> MSD 2602132-01 ND 26.170 25.000 ug/L 0.9 105 20 70-130 2 <br /> Chlorobenzene MS 2602132-01 ND 23.510 25.000 ug/L 94.0 70-130 1 <br /> MSD 2602132-01 ND 23.470 25.000 ug/L 0.2 93.9 20 70-130 2 <br /> Chloroethane MS 2602132-01 ND 22.990 25.000 ug/L 92.0 70-130 1 <br /> MSD 2602132-01 ND 23.950 25.000 ug/L 4.1 95.8 20 70-130 2 <br /> 1,4-Dichlorobenzene MS 2602132-01 ND 25.650 25.000 ug/L 103 70-130 1 <br /> MSD 2602132-01 ND 25.900 25.000 ug/L 1.0 104 20 70-130 2 <br /> 1,1-Dichloroethane MS 2602132-01 ND 22.400 25.000 ug/L 89.6 70-130 1 <br /> MSD 2602132-01 ND 23.200 25.000 ug/L 3.5 92.8 20 70-130 2 <br /> 1,1-Dichloroethene MS 2602132-01 ND 21.500 25.000 ug/L 86.0 70-130 1 <br /> MSD 2602132-01 ND 22.160 25.000 ug/L 3.0 88.6 20 70-130 2 <br /> Toluene MS 2602132-01 ND 22.920 25.000 ug/L 91.7 70-130 1 <br /> MSD 2602132-01 ND 23.110 25.000 ug/L 0.8 92.4 20 70-130 2 <br /> Trichloroethene MS 2602132-01 ND 22.920 25.000 ug/L 91.7 70-130 1 <br /> MSD 2602132-01 ND 23.410 25.000 ug/L 2.1 93.6 20 70-130 2 <br /> 1,2-Dichloroethane-d4(Surrogate) MS 2602132-01 ND 11.600 10.000 ug/L 116 75-125 1 <br /> MSD 2602132-01 ND 11.960 10.000 ug/L 3.1 120 75-125 2 <br /> Toluene-d8(Surrogate) MS 2602132-01 ND 9.9100 10.000 ug/L 99.1 80-120 1 <br /> MSD 2602132-01 ND 9.8900 10.000 ug/L 0.2 98.9 80-120 2 <br /> 4-Bromofluorobenzene(Surrogate) MS 2602132-01 ND 10.510 10.000 ug/L 105 80-120 1 <br /> MSD 2602132-01 ND 10.620 10.000 ug/L 1.0 106 80-120 2 <br /> Run <br /> Run# QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br /> 1 B227440-MS1 MS EPA-8260B 02/18/26 02/18/2612:50 AGB MS-V21 1 <br /> 2 B227440-MSD1 MSD EPA-8260B 02/18/26 02/18/2613:15 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: 1001665591 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 34 of 43 <br />