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C <br /> ace Analytical <br /> ENVIRONMENTAL SCIENCES <br /> Arcadis-SLO Reported: 04/13/2026 11:08 <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: B226884 Used client sample: N <br /> 1,1-Dichloroethene MS 2601575-02 ND 26.260 25.000 ug/L 105 70-130 3 <br /> MSD 2601575-02 ND 28.050 25.000 ug/L 6.6 112 20 70-130 4 <br /> Toluene MS 2601575-02 ND 24.860 25.000 ug/L 99.4 70-130 3 <br /> MSD 2601575-02 ND 25.290 25.000 ug/L 1.7 101 20 70-130 4 <br /> Trichloroethene MS 2601575-02 ND 23.760 25.000 ug/L 95.0 70-130 3 <br /> MSD 2601575-02 ND 24.320 25.000 ug/L 2.3 97.3 20 70-130 4 <br /> 1,2-Dichloroethane-d4(Surrogate) MS 2601575-02 ND 10.470 10.000 ug/L 105 75-125 3 <br /> MSD 2601575-02 ND 10.460 10.000 ug/L 0.1 105 75-125 4 <br /> Toluene-d8(Surrogate) MS 2601575-02 ND 9.9300 10.000 ug/L 99.3 80-120 3 <br /> MSD 2601575-02 ND 9.7900 10.000 ug/L 1.4 97.9 80-120 4 <br /> 4-Bromofluorobenzene(Surrogate) MS 2601575-02 ND 10.710 10.000 ug/L 107 80-120 3 <br /> MSD 2601575-02 ND 10.450 10.000 ug/L 2.5 104 80-120 4 <br /> Run <br /> Run# QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br /> 1 B226787-MS1 MS EPA-8260B 02/06/26 02/06/26 23:52 TDH MS-V20 1 <br /> 2 B226787-MSD1 MSD EPA-8260B 02/06/26 02/07/26 00:17 TDH MS-V20 1 <br /> 3 B226884-MS1 MS EPA-8260B 02/09/26 02/09/2613:41 AGB MS-V21 1 <br /> 4 B226884-MSD1 MSD EPA-8260B 02/09/26 02/09/2614:07 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: 1001665296 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 76 of 84 <br />