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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 />4Q23 Austin Unit <br />Aaron Hook <br />Reported:12/11/2023 17:13 <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: B177909 Used client sample: Y - Description: AMW-21S, 11/06/2023 09:30 <br />MSBenzene 24.970 70 - 130ND25.000 99.92321035-01 ug/L 1 <br />MSD 23.870 4.5 20 70 - 130ND25.000 95.52321035-01 ug/L 2 <br />MSBromodichloromethane 22.240 70 - 130ND25.000 89.02321035-01 ug/L 1 <br />MSD 21.340 4.1 20 70 - 130ND25.000 85.42321035-01 ug/L 2 <br />MSChlorobenzene 19.680 70 - 130ND25.000 78.72321035-01 ug/L 1 <br />MSD 18.710 5.1 20 70 - 130ND25.000 74.82321035-01 ug/L 2 <br />MSChloroethane 28.180 70 - 130ND25.000 1132321035-01 ug/L 1 <br />MSD 27.490 2.5 20 70 - 130ND25.000 1102321035-01 ug/L 2 <br />MS1,4-Dichlorobenzene 19.700 70 - 130ND25.000 78.82321035-01 ug/L 1 <br />MSD 18.660 5.4 20 70 - 130ND25.000 74.62321035-01 ug/L 2 <br />MS1,1-Dichloroethane 25.580 70 - 130ND25.000 1022321035-01 ug/L 1 <br />MSD 25.150 1.7 20 70 - 130ND25.000 1012321035-01 ug/L 2 <br />MS1,1-Dichloroethene 28.770 70 - 130ND25.000 1152321035-01 ug/L 1 <br />MSD 28.280 1.7 20 70 - 130ND25.000 1132321035-01 ug/L 2 <br />MSToluene 23.350 70 - 130ND25.000 93.42321035-01 ug/L 1 <br />MSD 22.440 4.0 20 70 - 130ND25.000 89.82321035-01 ug/L 2 <br />MSTrichloroethene 24.140 70 - 130ND25.000 96.62321035-01 ug/L 1 <br />MSD 23.590 2.3 20 70 - 130ND25.000 94.42321035-01 ug/L 2 <br />MS1,2-Dichloroethane-d4 (Surrogate)11.410 75 - 125ND10.000 1142321035-01 ug/L 1 <br />MSD 11.090 2.8 75 - 125ND10.000 1112321035-01 ug/L 2 <br />MSToluene-d8 (Surrogate)10.370 80 - 120ND10.000 1042321035-01 ug/L 1 <br />MSD 10.250 1.2 80 - 120ND10.000 1022321035-01 ug/L 2 <br />MS4-Bromofluorobenzene (Surrogate)10.890 80 - 120ND10.000 1092321035-01 ug/L 1 <br />MSD 10.540 3.3 80 - 120ND10.000 1052321035-01 ug/L 2 <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 102 of 115Report ID: 1001475032