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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: B201399 Used client sample: N <br />MS1,1-Dichloroethene 27.910 70 - 130ND25.000 1122418281-03 ug/L 3 <br />MSD 27.480 1.6 20 70 - 130ND25.000 1102418281-03 ug/L 4 <br />MSToluene 25.610 70 - 130ND25.000 1022418281-03 ug/L 3 <br />MSD 26.560 3.6 20 70 - 130ND25.000 1062418281-03 ug/L 4 <br />MSTrichloroethene 25.780 70 - 130ND25.000 1032418281-03 ug/L 3 <br />MSD 25.940 0.6 20 70 - 130ND25.000 1042418281-03 ug/L 4 <br />MS1,2-Dichloroethane-d4 (Surrogate)8.1300 75 - 125ND10.000 81.32418281-03 ug/L 3 <br />MSD 8.8400 8.4 75 - 125ND10.000 88.42418281-03 ug/L 4 <br />MSToluene-d8 (Surrogate)9.8200 80 - 120ND10.000 98.22418281-03 ug/L 3 <br />MSD 10.050 2.3 80 - 120ND10.000 1002418281-03 ug/L 4 <br />MS4-Bromofluorobenzene (Surrogate)9.8200 80 - 120ND10.000 98.22418281-03 ug/L 3 <br />MSD 10.100 2.8 80 - 120ND10.000 1012418281-03 ug/L 4 <br />QC Batch ID: B201404 Used client sample: N <br />MSBenzene 28.650 70 - 130ND25.000 1152418425-01 ug/L 5 <br />MSD 25.710 10.8 20 70 - 130ND25.000 1032418425-01 ug/L 6 <br />MSBromodichloromethane 28.820 70 - 130ND25.000 1152418425-01 ug/L 5 <br />MSD 26.270 9.3 20 70 - 130ND25.000 1052418425-01 ug/L 6 <br />MSChlorobenzene 29.500 70 - 130ND25.000 1182418425-01 ug/L 5 <br />MSD 26.510 10.7 20 70 - 130ND25.000 1062418425-01 ug/L 6 <br />MSChloroethane 30.120 70 - 130ND25.000 1202418425-01 ug/L 5 <br />MSD 24.010 22.6 20 70 - 130ND25.000 96.0 Q022418425-01 ug/L 6 <br />MS1,4-Dichlorobenzene 28.720 70 - 130ND25.000 1152418425-01 ug/L 5 <br />MSD 26.360 8.6 20 70 - 130ND25.000 1052418425-01 ug/L 6 <br />MS1,1-Dichloroethane 28.390 70 - 130ND25.000 1142418425-01 ug/L 5 <br />MSD 25.690 10.0 20 70 - 130ND25.000 1032418425-01 ug/L 6 <br />MS1,1-Dichloroethene 28.260 70 - 130ND25.000 1132418425-01 ug/L 5 <br />MSD 24.440 14.5 20 70 - 130ND25.000 97.82418425-01 ug/L 6 <br />MSToluene 28.920 70 - 130ND25.000 1162418425-01 ug/L 5 <br />MSD 26.110 10.2 20 70 - 130ND25.000 1042418425-01 ug/L 6 <br />MSTrichloroethene 29.720 70 - 130ND25.000 1192418425-01 ug/L 5 <br />MSD 26.640 10.9 20 70 - 130ND25.000 1072418425-01 ug/L 6 <br />MS1,2-Dichloroethane-d4 (Surrogate)10.160 75 - 125ND10.000 1022418425-01 ug/L 5 <br />MSD 9.5000 6.7 75 - 125ND10.000 95.02418425-01 ug/L 6 <br />MSToluene-d8 (Surrogate)9.7900 80 - 120ND10.000 97.92418425-01 ug/L 5 <br />MSD 9.7900 0 80 - 120ND10.000 97.92418425-01 ug/L 6 <br />MS4-Bromofluorobenzene (Surrogate)10.600 80 - 120ND10.000 1062418425-01 ug/L 5 <br />MSD 10.280 3.1 80 - 120ND10.000 1032418425-01 ug/L 6 <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 99 of 108Report ID: 1001561256