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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: B201469 Used client sample: N <br />MSBenzene 24.510 70 - 130ND25.000 98.02418707-01 ug/L 1 <br />MSD 24.130 1.6 20 70 - 130ND25.000 96.52418707-01 ug/L 2 <br />MSBromodichloromethane 24.360 70 - 130ND25.000 97.42418707-01 ug/L 1 <br />MSD 24.910 2.2 20 70 - 130ND25.000 99.62418707-01 ug/L 2 <br />MSChlorobenzene 23.790 70 - 130ND25.000 95.22418707-01 ug/L 1 <br />MSD 23.810 0.1 20 70 - 130ND25.000 95.22418707-01 ug/L 2 <br />MSChloroethane 25.300 70 - 130ND25.000 1012418707-01 ug/L 1 <br />MSD 24.240 4.3 20 70 - 130ND25.000 97.02418707-01 ug/L 2 <br />MS1,4-Dichlorobenzene 24.070 70 - 130ND25.000 96.32418707-01 ug/L 1 <br />MSD 24.190 0.5 20 70 - 130ND25.000 96.82418707-01 ug/L 2 <br />MS1,1-Dichloroethane 26.930 70 - 130ND25.000 1082418707-01 ug/L 1 <br />MSD 26.200 2.7 20 70 - 130ND25.000 1052418707-01 ug/L 2 <br />MS1,1-Dichloroethene 26.690 70 - 130ND25.000 1072418707-01 ug/L 1 <br />MSD 26.110 2.2 20 70 - 130ND25.000 1042418707-01 ug/L 2 <br />MSToluene 22.700 70 - 130ND25.000 90.82418707-01 ug/L 1 <br />MSD 23.130 1.9 20 70 - 130ND25.000 92.52418707-01 ug/L 2 <br />MSTrichloroethene 23.370 70 - 130ND25.000 93.52418707-01 ug/L 1 <br />MSD 24.000 2.7 20 70 - 130ND25.000 96.02418707-01 ug/L 2 <br />MS1,2-Dichloroethane-d4 (Surrogate)10.460 75 - 125ND10.000 1052418707-01 ug/L 1 <br />MSD 10.570 1.0 75 - 125ND10.000 1062418707-01 ug/L 2 <br />MSToluene-d8 (Surrogate)9.7300 80 - 120ND10.000 97.32418707-01 ug/L 1 <br />MSD 9.8800 1.5 80 - 120ND10.000 98.82418707-01 ug/L 2 <br />MS4-Bromofluorobenzene (Surrogate)10.270 80 - 120ND10.000 1032418707-01 ug/L 1 <br />MSD 10.410 1.4 80 - 120ND10.000 1042418707-01 ug/L 2 <br />QC Batch ID: B201470 Used client sample: N <br />MSBenzene 25.770 70 - 130ND25.000 1032418634-01 ug/L 3 <br />MSD 23.710 8.3 20 70 - 130ND25.000 94.82418634-01 ug/L 4 <br />MSBromodichloromethane 26.300 70 - 130ND25.000 1052418634-01 ug/L 3 <br />MSD 25.440 3.3 20 70 - 130ND25.000 1022418634-01 ug/L 4 <br />MSChlorobenzene 24.760 70 - 130ND25.000 99.02418634-01 ug/L 3 <br />MSD 23.620 4.7 20 70 - 130ND25.000 94.52418634-01 ug/L 4 <br />MSChloroethane 25.750 70 - 130ND25.000 1032418634-01 ug/L 3 <br />MSD 23.600 8.7 20 70 - 130ND25.000 94.42418634-01 ug/L 4 <br />MS1,4-Dichlorobenzene 25.090 70 - 130ND25.000 1002418634-01 ug/L 3 <br />MSD 24.070 4.1 20 70 - 130ND25.000 96.32418634-01 ug/L 4 <br />MS1,1-Dichloroethane 27.690 70 - 130ND25.000 1112418634-01 ug/L 3 <br />MSD 25.550 8.0 20 70 - 130ND25.000 1022418634-01 ug/L 4 <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 114 of 123Report ID: 1001554248