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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 />30216409.01/4Qtr Austin Unit <br />Ari Terry <br />Reported:01/02/2025 10:17 <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: B201353 Used client sample: Y - Description: AMW-49, 11/13/2024 15:02 <br />MSBenzene 25.620 70 - 130ND25.000 1022418357-04 ug/L 1 <br />MSD 24.420 4.8 20 70 - 130ND25.000 97.72418357-04 ug/L 2 <br />MSBromodichloromethane 25.300 70 - 130ND25.000 1012418357-04 ug/L 1 <br />MSD 23.620 6.9 20 70 - 130ND25.000 94.52418357-04 ug/L 2 <br />MSChlorobenzene 25.440 70 - 130ND25.000 1022418357-04 ug/L 1 <br />MSD 24.160 5.2 20 70 - 130ND25.000 96.62418357-04 ug/L 2 <br />MSChloroethane 24.050 70 - 130ND25.000 96.22418357-04 ug/L 1 <br />MSD 25.460 5.7 20 70 - 130ND25.000 1022418357-04 ug/L 2 <br />MS1,4-Dichlorobenzene 24.890 70 - 130ND25.000 99.62418357-04 ug/L 1 <br />MSD 24.610 1.1 20 70 - 130ND25.000 98.42418357-04 ug/L 2 <br />MS1,1-Dichloroethane 25.700 70 - 130ND25.000 1032418357-04 ug/L 1 <br />MSD 28.400 10.0 20 70 - 130ND25.000 1142418357-04 ug/L 2 <br />MS1,1-Dichloroethene 25.400 70 - 130ND25.000 1022418357-04 ug/L 1 <br />MSD 29.980 16.5 20 70 - 130ND25.000 1202418357-04 ug/L 2 <br />MSToluene 25.590 70 - 130ND25.000 1022418357-04 ug/L 1 <br />MSD 23.960 6.6 20 70 - 130ND25.000 95.82418357-04 ug/L 2 <br />MSTrichloroethene 26.040 70 - 130ND25.000 1042418357-04 ug/L 1 <br />MSD 24.470 6.2 20 70 - 130ND25.000 97.92418357-04 ug/L 2 <br />MS1,2-Dichloroethane-d4 (Surrogate)9.7300 75 - 125ND10.000 97.32418357-04 ug/L 1 <br />MSD 9.8300 1.0 75 - 125ND10.000 98.32418357-04 ug/L 2 <br />MSToluene-d8 (Surrogate)9.9000 80 - 120ND10.000 99.02418357-04 ug/L 1 <br />MSD 9.7500 1.5 80 - 120ND10.000 97.52418357-04 ug/L 2 <br />MS4-Bromofluorobenzene (Surrogate)10.540 80 - 120ND10.000 1052418357-04 ug/L 1 <br />MSD 10.560 0.2 80 - 120ND10.000 1062418357-04 ug/L 2 <br />QC Batch ID: B201399 Used client sample: N <br />MSBenzene 27.230 70 - 130ND25.000 1092418281-03 ug/L 3 <br />MSD 27.690 1.7 20 70 - 130ND25.000 1112418281-03 ug/L 4 <br />MSBromodichloromethane 23.200 70 - 130ND25.000 92.82418281-03 ug/L 3 <br />MSD 24.780 6.6 20 70 - 130ND25.000 99.12418281-03 ug/L 4 <br />MSChlorobenzene 25.340 70 - 130ND25.000 1012418281-03 ug/L 3 <br />MSD 26.840 5.7 20 70 - 130ND25.000 1072418281-03 ug/L 4 <br />MSChloroethane 22.640 70 - 130ND25.000 90.62418281-03 ug/L 3 <br />MSD 22.370 1.2 20 70 - 130ND25.000 89.52418281-03 ug/L 4 <br />MS1,4-Dichlorobenzene 24.070 70 - 130ND25.000 96.32418281-03 ug/L 3 <br />MSD 26.080 8.0 20 70 - 130ND25.000 1042418281-03 ug/L 4 <br />MS1,1-Dichloroethane 25.700 70 - 130ND25.000 1032418281-03 ug/L 3 <br />MSD 26.250 2.1 20 70 - 130ND25.000 1052418281-03 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 98 of 108Report ID: 1001561256