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C <br /> ace Analytical <br /> ENVIRONMENTAL SCIENCES <br /> Arcadis-SLO Reported: 04/14/2026 9:09 <br /> 4119 Broad Street Suite 210 Project: Forward Landfill-COELT <br /> San Luis Obispo,CA 93401 Project Number: 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: B227107 Used client sample: N <br /> Benzene MS 2601790-04 ND 24.150 25.000 ug/L 96.6 70-130 1 <br /> MSD 2601790-04 ND 24.390 25.000 ug/L 1.0 97.6 20 70-130 2 <br /> Bromodichloromethane MS 2601790-04 ND 23.490 25.000 ug/L 94.0 70-130 1 <br /> MSD 2601790-04 ND 24.360 25.000 ug/L 3.6 97.4 20 70-130 2 <br /> Chlorobenzene MS 2601790-04 ND 24.000 25.000 ug/L 96.0 70-130 1 <br /> MSD 2601790-04 ND 24.040 25.000 ug/L 0.2 96.2 20 70-130 2 <br /> Chloroethane MS 2601790-04 ND 23.500 25.000 ug/L 94.0 70-130 1 <br /> MSD 2601790-04 ND 23.080 25.000 ug/L 1.8 92.3 20 70-130 2 <br /> 1,4-Dichlorobenzene MS 2601790-04 ND 23.380 25.000 ug/L 93.5 70-130 1 <br /> MSD 2601790-04 ND 23.690 25.000 ug/L 1.3 94.8 20 70-130 2 <br /> 1,1-Dichloroethane MS 2601790-04 ND 24.680 25.000 ug/L 98.7 70-130 1 <br /> MSD 2601790-04 ND 24.540 25.000 ug/L 0.6 98.2 20 70-130 2 <br /> 1,1-Dichloroethene MS 2601790-04 ND 27.350 25.000 ug/L 109 70-130 1 <br /> MSD 2601790-04 ND 27.860 25.000 ug/L 1.8 ill 20 70-130 2 <br /> Toluene MS 2601790-04 0.24000 24.740 25.000 ug/L 98.0 70-130 1 <br /> MSD 2601790-04 0.24000 25.340 25.000 ug/L 2.4 100 20 70-130 2 <br /> Trichloroethene MS 2601790-04 0.45000 24.350 25.000 ug/L 95.6 70-130 1 <br /> MSD 2601790-04 0.45000 24.910 25.000 ug/L 2.3 97.8 20 70-130 2 <br /> 1,2-Dichloroethane-d4(Surrogate) MS 2601790-04 ND 11.090 10.000 ug/L ill 75-125 1 <br /> MSD 2601790-04 ND 10.330 10.000 ug/L 7.1 103 75-125 2 <br /> Toluene-d8(Surrogate) MS 2601790-04 ND 10.130 10.000 ug/L 101 80-120 1 <br /> MSD 2601790-04 ND 10.060 10.000 ug/L 0.7 101 80-120 2 <br /> 4-Bromofluorobenzene(Surrogate) MS 2601790-04 ND 10.200 10.000 ug/L 102 80-120 1 <br /> MSD 2601790-04 ND 9.6700 10.000 ug/L 5.3 96.7 80-120 2 <br /> Run <br /> Run# QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br /> 1 B227107-MS1 MS EPA-8260B 02/13/26 02/14/26 07:31 RCC MS-V15 1 <br /> 2 B227107-MSD1 MSD EPA-8260B 02/13/26 02/14/26 07:59 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: 1001665792 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 84 of 95 <br />