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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:02/14/2024 12:14 <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: B183707 Used client sample: N <br />MSBenzene 21.520 70 - 130ND25.000 86.12402520-02 ug/L 1 <br />MSD 20.920 2.8 20 70 - 130ND25.000 83.72402520-02 ug/L 2 <br />MSBromodichloromethane 22.910 70 - 130ND25.000 91.62402520-02 ug/L 1 <br />MSD 22.650 1.1 20 70 - 130ND25.000 90.62402520-02 ug/L 2 <br />MSChlorobenzene 22.860 70 - 130ND25.000 91.42402520-02 ug/L 1 <br />MSD 23.320 2.0 20 70 - 130ND25.000 93.32402520-02 ug/L 2 <br />MSChloroethane 28.890 70 - 130ND25.000 1162402520-02 ug/L 1 <br />MSD 27.980 3.2 20 70 - 130ND25.000 1122402520-02 ug/L 2 <br />MS1,4-Dichlorobenzene 23.080 70 - 130ND25.000 92.32402520-02 ug/L 1 <br />MSD 23.840 3.2 20 70 - 130ND25.000 95.42402520-02 ug/L 2 <br />MS1,1-Dichloroethane 22.450 70 - 130ND25.000 89.82402520-02 ug/L 1 <br />MSD 21.610 3.8 20 70 - 130ND25.000 86.42402520-02 ug/L 2 <br />MS1,1-Dichloroethene 23.300 70 - 130ND25.000 93.22402520-02 ug/L 1 <br />MSD 23.000 1.3 20 70 - 130ND25.000 92.02402520-02 ug/L 2 <br />MSToluene 21.940 70 - 130ND25.000 87.82402520-02 ug/L 1 <br />MSD 21.470 2.2 20 70 - 130ND25.000 85.92402520-02 ug/L 2 <br />MSTrichloroethene 23.300 70 - 130ND25.000 93.22402520-02 ug/L 1 <br />MSD 23.130 0.7 20 70 - 130ND25.000 92.52402520-02 ug/L 2 <br />MS1,2-Dichloroethane-d4 (Surrogate)10.220 75 - 125ND10.000 1022402520-02 ug/L 1 <br />MSD 9.7900 4.3 75 - 125ND10.000 97.92402520-02 ug/L 2 <br />MSToluene-d8 (Surrogate)9.7000 80 - 120ND10.000 97.02402520-02 ug/L 1 <br />MSD 9.6500 0.5 80 - 120ND10.000 96.52402520-02 ug/L 2 <br />MS4-Bromofluorobenzene (Surrogate)9.8900 80 - 120ND10.000 98.92402520-02 ug/L 1 <br />MSD 9.9600 0.7 80 - 120ND10.000 99.62402520-02 ug/L 2 <br />QC Batch ID: B183708 Used client sample: N <br />MSBenzene 22.760 70 - 1301.4600 25.000 85.22402172-01 ug/L 3 <br />MSD 20.970 8.2 20 70 - 1301.4600 25.000 78.02402172-01 ug/L 4 <br />MSBromodichloromethane 24.200 70 - 130ND25.000 96.82402172-01 ug/L 3 <br />MSD 22.790 6.0 20 70 - 130ND25.000 91.22402172-01 ug/L 4 <br />MSChlorobenzene 24.540 70 - 1300.75000 25.000 95.22402172-01 ug/L 3 <br />MSD 24.250 1.2 20 70 - 1300.75000 25.000 94.02402172-01 ug/L 4 <br />MSChloroethane 29.410 70 - 130ND25.000 1182402172-01 ug/L 3 <br />MSD 27.210 7.8 20 70 - 130ND25.000 1092402172-01 ug/L 4 <br />MS1,4-Dichlorobenzene 27.600 70 - 1304.3300 25.000 93.12402172-01 ug/L 3 <br />MSD 26.880 2.6 20 70 - 1304.3300 25.000 90.22402172-01 ug/L 4 <br />MS1,1-Dichloroethane 22.720 70 - 1300.21000 25.000 90.02402172-01 ug/L 3 <br />MSD 21.130 7.3 20 70 - 1300.21000 25.000 83.72402172-01 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 60 of 71Report ID: 1001489532