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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 />Forward Landfill-Forward GTWS <br />Drew Feucht <br />Reported:07/25/2023 12:23 <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: B170280 Used client sample: N <br />MSBenzene 25.490 70 - 130ND25.000 1022313953-01 ug/L 1 <br />MSD 27.630 8.1 20 70 - 130ND25.000 1112313953-01 ug/L 2 <br />MSBromodichloromethane 23.690 70 - 130ND25.000 94.82313953-01 ug/L 1 <br />MSD 25.660 8.0 20 70 - 130ND25.000 1032313953-01 ug/L 2 <br />MSChlorobenzene 24.600 70 - 130ND25.000 98.42313953-01 ug/L 1 <br />MSD 27.120 9.7 20 70 - 130ND25.000 1082313953-01 ug/L 2 <br />MSChloroethane 24.260 70 - 130ND25.000 97.02313953-01 ug/L 1 <br />MSD 25.970 6.8 20 70 - 130ND25.000 1042313953-01 ug/L 2 <br />MS1,4-Dichlorobenzene 26.450 70 - 130ND25.000 1062313953-01 ug/L 1 <br />MSD 29.240 10.0 20 70 - 130ND25.000 1172313953-01 ug/L 2 <br />MS1,1-Dichloroethane 25.370 70 - 130ND25.000 1012313953-01 ug/L 1 <br />MSD 27.130 6.7 20 70 - 130ND25.000 1092313953-01 ug/L 2 <br />MS1,1-Dichloroethene 26.320 70 - 130ND25.000 1052313953-01 ug/L 1 <br />MSD 28.310 7.3 20 70 - 130ND25.000 1132313953-01 ug/L 2 <br />MSToluene 26.440 70 - 130ND25.000 1062313953-01 ug/L 1 <br />MSD 28.390 7.1 20 70 - 130ND25.000 1142313953-01 ug/L 2 <br />MSTrichloroethene 70.340 70 - 13049.290 25.000 84.22313953-01 ug/L 1 <br />MSD 72.430 2.9 20 70 - 13049.290 25.000 92.62313953-01 ug/L 2 <br />MS1,2-Dichloroethane-d4 (Surrogate)9.6400 75 - 125ND10.000 96.42313953-01 ug/L 1 <br />MSD 9.8700 2.4 75 - 125ND10.000 98.72313953-01 ug/L 2 <br />MSToluene-d8 (Surrogate)10.070 80 - 120ND10.000 1012313953-01 ug/L 1 <br />MSD 9.9700 1.0 80 - 120ND10.000 99.72313953-01 ug/L 2 <br />MS4-Bromofluorobenzene (Surrogate)9.9500 80 - 120ND10.000 99.52313953-01 ug/L 1 <br />MSD 10.000 0.5 80 - 120ND10.000 1002313953-01 ug/L 2 <br />QC Batch ID: B170442 Used client sample: N <br />MSBenzene 26.930 70 - 130ND25.000 1082314150-01 ug/L 3 <br />MSD 23.160 15.1 20 70 - 130ND25.000 92.62314150-01 ug/L 4 <br />MSBromodichloromethane 23.590 70 - 130ND25.000 94.42314150-01 ug/L 3 <br />MSD 19.750 17.7 20 70 - 130ND25.000 79.02314150-01 ug/L 4 <br />MSChlorobenzene 21.700 70 - 130ND25.000 86.82314150-01 ug/L 3 <br />MSD 18.700 14.9 20 70 - 130ND25.000 74.82314150-01 ug/L 4 <br />MSChloroethane 26.440 70 - 130ND25.000 1062314150-01 ug/L 3 <br />MSD 22.530 16.0 20 70 - 130ND25.000 90.12314150-01 ug/L 4 <br />MS1,4-Dichlorobenzene 22.370 70 - 130ND25.000 89.52314150-01 ug/L 3 <br />MSD 19.120 15.7 20 70 - 130ND25.000 76.52314150-01 ug/L 4 <br />MS1,1-Dichloroethane 26.820 70 - 130ND25.000 1072314150-01 ug/L 3 <br />MSD 23.380 13.7 20 70 - 130ND25.000 93.52314150-01 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 21 of 23Report ID: 1001442650