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Arcadis- SLO <br />4119 Broad Street Suite 210 <br />San Luis Obispo, CA 93401 <br />Project: <br />Project Number: <br />Project Manager: <br />Forward Landfill-COELT <br />4Q24 Austin Unit <br />Ari Terry <br />Reported:11/27/2024 15:53 <br />Quality Control Report - Precision & Accuracy <br />Constituent Sample IDType Result Result Added Units RPD Recovery RPD Recovery Quals <br />Source Spike Percent Percent <br />Control Limits <br />Volatile Organic Analysis (EPA Method 8260B) <br />Source Lab <br />R# <br />QC Batch ID: B201470 Used client sample: N <br />MS1,1-Dichloroethene 27.100 70 - 130ND25.000 1082418634-01 ug/L 3 <br />MSD 25.100 7.7 20 70 - 130ND25.000 1002418634-01 ug/L 4 <br />MSToluene 24.700 70 - 130ND25.000 98.82418634-01 ug/L 3 <br />MSD 23.730 4.0 20 70 - 130ND25.000 94.92418634-01 ug/L 4 <br />MSTrichloroethene 24.680 70 - 130ND25.000 98.72418634-01 ug/L 3 <br />MSD 23.850 3.4 20 70 - 130ND25.000 95.42418634-01 ug/L 4 <br />MS1,2-Dichloroethane-d4 (Surrogate)10.620 75 - 125ND10.000 1062418634-01 ug/L 3 <br />MSD 10.220 3.8 75 - 125ND10.000 1022418634-01 ug/L 4 <br />MSToluene-d8 (Surrogate)9.8300 80 - 120ND10.000 98.32418634-01 ug/L 3 <br />MSD 10.030 2.0 80 - 120ND10.000 1002418634-01 ug/L 4 <br />MS4-Bromofluorobenzene (Surrogate)9.9000 80 - 120ND10.000 99.02418634-01 ug/L 3 <br />MSD 10.140 2.4 80 - 120ND10.000 1012418634-01 ug/L 4 <br />Run #QC Sample ID QC Type Method Prep Date <br />Run <br />Analyst Instrument DilutionDate Time <br /> 1 B201469-MS1 MS EPA-8260B MGC MS-V5 111/20/24 11/21/24 15:57 <br /> 2 B201469-MSD1 MSD EPA-8260B MGC MS-V5 111/20/24 11/21/24 16:21 <br /> 3 B201470-MS1 MS EPA-8260B MGC MS-V5 111/21/24 11/22/24 03:55 <br /> 4 B201470-MSD1 MSD EPA-8260B MGC MS-V5 111/21/24 11/22/24 04:19 <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 />4100 Atlas Court Bakersfield, CA 93308 (661) 327-4911 FAX (661) 327-1918 www.pacelabs.com Page 115 of 123Report ID: 1001554248