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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 <br />1Q24 Austin Unit 30167676.01 <br />Ari Terry <br />Reported:02/28/2024 11:01 <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: B183759 Used client sample: N <br />MSBenzene 26.110 70 - 130ND25.000 1042402193-01 ug/L 1 <br />MSD 24.310 7.1 20 70 - 130ND25.000 97.22402193-01 ug/L 2 <br />MSBromodichloromethane 24.010 70 - 130ND25.000 96.02402193-01 ug/L 1 <br />MSD 24.300 1.2 20 70 - 130ND25.000 97.22402193-01 ug/L 2 <br />MSChlorobenzene 24.070 70 - 130ND25.000 96.32402193-01 ug/L 1 <br />MSD 24.330 1.1 20 70 - 130ND25.000 97.32402193-01 ug/L 2 <br />MSChloroethane 24.120 70 - 130ND25.000 96.52402193-01 ug/L 1 <br />MSD 21.500 11.5 20 70 - 130ND25.000 86.02402193-01 ug/L 2 <br />MS1,4-Dichlorobenzene 23.470 70 - 130ND25.000 93.92402193-01 ug/L 1 <br />MSD 23.880 1.7 20 70 - 130ND25.000 95.52402193-01 ug/L 2 <br />MS1,1-Dichloroethane 26.280 70 - 130ND25.000 1052402193-01 ug/L 1 <br />MSD 24.600 6.6 20 70 - 130ND25.000 98.42402193-01 ug/L 2 <br />MS1,1-Dichloroethene 27.710 70 - 130ND25.000 1112402193-01 ug/L 1 <br />MSD 25.070 10.0 20 70 - 130ND25.000 1002402193-01 ug/L 2 <br />MSToluene 24.570 70 - 130ND25.000 98.32402193-01 ug/L 1 <br />MSD 23.430 4.8 20 70 - 130ND25.000 93.72402193-01 ug/L 2 <br />MSTrichloroethene 24.900 70 - 130ND25.000 99.62402193-01 ug/L 1 <br />MSD 23.540 5.6 20 70 - 130ND25.000 94.22402193-01 ug/L 2 <br />MS1,2-Dichloroethane-d4 (Surrogate)9.9400 75 - 125ND10.000 99.42402193-01 ug/L 1 <br />MSD 10.140 2.0 75 - 125ND10.000 1012402193-01 ug/L 2 <br />MSToluene-d8 (Surrogate)10.060 80 - 120ND10.000 1012402193-01 ug/L 1 <br />MSD 9.9100 1.5 80 - 120ND10.000 99.12402193-01 ug/L 2 <br />MS4-Bromofluorobenzene (Surrogate)9.7100 80 - 120ND10.000 97.12402193-01 ug/L 1 <br />MSD 10.460 7.4 80 - 120ND10.000 1052402193-01 ug/L 2 <br />QC Batch ID: B183859 Used client sample: N <br />MSBenzene 23.510 70 - 130ND25.000 94.02402626-01 ug/L 3 <br />MSD 26.580 12.3 20 70 - 130ND25.000 1062402626-01 ug/L 4 <br />MSBromodichloromethane 24.730 70 - 1301.5000 25.000 92.92402626-01 ug/L 3 <br />MSD 26.150 5.6 20 70 - 1301.5000 25.000 98.62402626-01 ug/L 4 <br />MSChlorobenzene 23.930 70 - 130ND25.000 95.72402626-01 ug/L 3 <br />MSD 24.220 1.2 20 70 - 130ND25.000 96.92402626-01 ug/L 4 <br />MSChloroethane 21.050 70 - 130ND25.000 84.22402626-01 ug/L 3 <br />MSD 22.900 8.4 20 70 - 130ND25.000 91.62402626-01 ug/L 4 <br />MS1,4-Dichlorobenzene 23.010 70 - 130ND25.000 92.02402626-01 ug/L 3 <br />MSD 24.170 4.9 20 70 - 130ND25.000 96.72402626-01 ug/L 4 <br />MS1,1-Dichloroethane 23.630 70 - 130ND25.000 94.52402626-01 ug/L 3 <br />MSD 26.430 11.2 20 70 - 130ND25.000 1062402626-01 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 67 of 97Report ID: 1001492876