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C <br /> ace Analytical <br /> ENVIRONMENTAL SCIENCES <br /> Arcadis-SLO Reported: 02/20/2026 17:41 <br /> 4119 Broad Street Suite 210 Project: Forward Landfill-COELT <br /> San Luis Obispo,CA 93401 Project Number: 30274343.01 1 Q26 Surface Water <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: B227340 Used client sample: N <br /> Benzene MS 2601989-01 ND 28.190 25.000 ug/L 113 70-130 1 <br /> MSD 2601989-01 ND 29.100 25.000 ug/L 3.2 116 20 70-130 2 <br /> Bromodichloromethane MS 2601989-01 ND 26.600 25.000 ug/L 106 70-130 1 <br /> MSD 2601989-01 ND 26.920 25.000 ug/L 1.2 108 20 70-130 2 <br /> Chlorobenzene MS 2601989-01 ND 24.880 25.000 ug/L 99.5 70-130 1 <br /> MSD 2601989-01 ND 26.160 25.000 ug/L 5.0 105 20 70-130 2 <br /> Chloroethane MS 2601989-01 ND 26.750 25.000 ug/L 107 70-130 1 <br /> MSD 2601989-01 ND 27.630 25.000 ug/L 3.2 111 20 70-130 2 <br /> 1,4-Dichlorobenzene MS 2601989-01 ND 25.020 25.000 ug/L 100 70-130 1 <br /> MSD 2601989-01 ND 26.090 25.000 ug/L 4.2 104 20 70-130 2 <br /> 1,1-Dichloroethane MS 2601989-01 ND 28.320 25.000 ug/L 113 70-130 1 <br /> MSD 2601989-01 ND 29.530 25.000 ug/L 4.2 118 20 70-130 2 <br /> 1,1-Dichloroethene MS 2601989-01 ND 32.140 25.000 ug/L 129 70-130 1 <br /> MSD 2601989-01 ND 33.160 25.000 ug/L 3.1 133 20 70-130 Q03 2 <br /> Toluene MS 2601989-01 ND 28.460 25.000 ug/L 114 70-130 1 <br /> MSD 2601989-01 ND 29.280 25.000 ug/L 2.8 117 20 70-130 2 <br /> Trichloroethene MS 2601989-01 ND 27.270 25.000 ug/L 109 70-130 1 <br /> MSD 2601989-01 ND 28.360 25.000 ug/L 3.9 113 20 70-130 2 <br /> 1,2-Dichloroethane-d4(Surrogate) MS 2601989-01 ND 11.430 10.000 ug/L 114 75-125 1 <br /> MSD 2601989-01 ND 10.800 10.000 ug/L 5.7 108 75-125 2 <br /> Toluene-d8(Surrogate) MS 2601989-01 ND 10.300 10.000 ug/L 103 80-120 1 <br /> MSD 2601989-01 ND 10.310 10.000 ug/L 0.1 103 80-120 2 <br /> 4-Bromofluorobenzene(Surrogate) MS 2601989-01 ND 10.240 10.000 ug/L 102 80-120 1 <br /> MSD 2601989-01 ND 10.230 10.000 ug/L 0.1 102 80-120 2 <br /> Run <br /> Run# QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br /> 1 B227340-MS1 MS EPA-8260B 02/17/26 02/17/2611:43 RCC MS-V15 1 <br /> 2 B227340-MSD1 MSD EPA-8260B 02/17/26 02/17/2612:12 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: 1001655256 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 24 of 31 <br />