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C <br /> ace Analytical <br /> ENVIRONMENTAL SCIENCES <br /> Arcadis-SLO Reported: 02/13/2026 16:34 <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: B226642 Used client sample: Y-Description: AMW-13, 01/28/2026 15:31 <br /> 1,1-Dichloroethene MS 2601426-05 ND 23.300 25.000 ug/L 93.2 70-130 3 <br /> MSD 2601426-05 ND 23.430 25.000 ug/L 0.6 93.7 20 70-130 4 <br /> Toluene MS 2601426-05 ND 22.680 25.000 ug/L 90.7 70-130 3 <br /> MSD 2601426-05 ND 23.390 25.000 ug/L 3.1 93.6 20 70-130 4 <br /> Trichloroethene MS 2601426-05 0.74000 22.490 25.000 ug/L 87.0 70-130 3 <br /> MSD 2601426-05 0.74000 23.420 25.000 ug/L 4.1 90.7 20 70-130 4 <br /> 1,2-Dichloroethane-d4(Surrogate) MS 2601426-05 ND 10.560 10.000 ug/L 106 75-125 3 <br /> MSD 2601426-05 ND 10.020 10.000 ug/L 5.2 100 75-125 4 <br /> Toluene-d8(Surrogate) MS 2601426-05 ND 9.6100 10.000 ug/L 96.1 80-120 3 <br /> MSD 2601426-05 ND 9.7700 10.000 ug/L 1.7 97.7 80-120 4 <br /> 4-Bromofluorobenzene(Surrogate) MS 2601426-05 ND 10.940 10.000 ug/L 109 80-120 3 <br /> MSD 2601426-05 ND 10.780 10.000 ug/L 1.5 108 80-120 4 <br /> Run <br /> Run# QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br /> 1 B226641-MS1 MS EPA-8260B 02/04/26 02/04/2612:58 AGB MS-V21 1 <br /> 2 B226641-MSD1 MSD EPA-8260B 02/04/26 02/04/2613:23 AGB MS-V21 1 <br /> 3 B226642-MS1 MS EPA-8260B 02/04/26 02/05/26 01:13 AGB MS-V21 1 <br /> 4 B226642-MSD1 MSD EPA-8260B 02/04/26 02/05/26 01:38 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: 1001653944 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 89 of 98 <br />