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C <br /> ace Analytical <br /> ENVIRONMENTAL SCIENCES <br /> Arcadis-SLO Reported: 04/13/2026 15:13 <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: B226775 Used client sample: Y-Description: AMW-11, 01/29/2026 09:41 <br /> Benzene MS 2601495-01 ND 22.920 25.000 ug/L 91.7 70-130 1 <br /> MSD 2601495-01 ND 22.940 25.000 ug/L 0.1 91.8 20 70-130 2 <br /> Bromodichloromethane MS 2601495-01 ND 28.030 25.000 ug/L 112 70-130 1 <br /> MSD 2601495-01 ND 27.180 25.000 ug/L 3.1 109 20 70-130 2 <br /> Chlorobenzene MS 2601495-01 ND 25.120 25.000 ug/L 100 70-130 1 <br /> MSD 2601495-01 ND 26.050 25.000 ug/L 3.6 104 20 70-130 2 <br /> Chloroethane MS 2601495-01 ND 22.120 25.000 ug/L 88.5 70-130 1 <br /> MSD 2601495-01 ND 23.000 25.000 ug/L 3.9 92.0 20 70-130 2 <br /> 1,4-Dichlorobenzene MS 2601495-01 ND 26.900 25.000 ug/L 108 70-130 1 <br /> MSD 2601495-01 ND 28.590 25.000 ug/L 6.1 114 20 70-130 2 <br /> 1,1-Dichloroethane MS 2601495-01 ND 25.250 25.000 ug/L 101 70-130 1 <br /> MSD 2601495-01 ND 25.500 25.000 ug/L 1.0 102 20 70-130 2 <br /> 1,1-Dichloroethene MS 2601495-01 ND 28.230 25.000 ug/L 113 70-130 1 <br /> MSD 2601495-01 ND 28.350 25.000 ug/L 0.4 113 20 70-130 2 <br /> Toluene MS 2601495-01 ND 26.880 25.000 ug/L 108 70-130 1 <br /> MSD 2601495-01 ND 26.060 25.000 ug/L 3.1 104 20 70-130 2 <br /> Trichloroethene MS 2601495-01 ND 27.990 25.000 ug/L 112 70-130 1 <br /> MSD 2601495-01 ND 26.980 25.000 ug/L 3.7 108 20 70-130 2 <br /> 1,2-Dichloroethane-d4(Surrogate) MS 2601495-01 ND 10.810 10.000 ug/L 108 75-125 1 <br /> MSD 2601495-01 ND 10.410 10.000 ug/L 3.8 104 75-125 2 <br /> Toluene-d8(Surrogate) MS 2601495-01 ND 10.080 10.000 ug/L 101 80-120 1 <br /> MSD 2601495-01 ND 9.8800 10.000 ug/L 2.0 98.8 80-120 2 <br /> 4-Bromofluorobenzene(Surrogate) MS 2601495-01 ND 11.100 10.000 ug/L ill 80-120 1 <br /> MSD 2601495-01 ND 11.010 10.000 ug/L 0.8 110 80-120 2 <br /> Run <br /> Run# QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br /> 1 B226775-MS1 MS EPA-8260B 02/06/26 02/07/26 06:00 RCC MS-V15 1 <br /> 2 B226775-MSD1 MSD EPA-8260B 02/06/26 02/07/26 06:29 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: 1001665557 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 110 of 118 <br />