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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 />Drew Feucht <br />Reported:11/30/2023 11:54 <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: B177977 Used client sample: Y - Description: AMW-24R, 11/07/2023 09:39 <br />MSBenzene 23.700 70 - 130ND25.000 94.82321132-01 ug/L 1 <br />MSD 23.140 2.4 20 70 - 130ND25.000 92.62321132-01 ug/L 2 <br />MSBromodichloromethane 21.510 70 - 130ND25.000 86.02321132-01 ug/L 1 <br />MSD 20.970 2.5 20 70 - 130ND25.000 83.92321132-01 ug/L 2 <br />MSChlorobenzene 18.710 70 - 130ND25.000 74.82321132-01 ug/L 1 <br />MSD 18.600 0.6 20 70 - 130ND25.000 74.42321132-01 ug/L 2 <br />MSChloroethane 28.750 70 - 130ND25.000 1152321132-01 ug/L 1 <br />MSD 28.000 2.6 20 70 - 130ND25.000 1122321132-01 ug/L 2 <br />MS1,4-Dichlorobenzene 18.420 70 - 130ND25.000 73.72321132-01 ug/L 1 <br />MSD 18.250 0.9 20 70 - 130ND25.000 73.02321132-01 ug/L 2 <br />MS1,1-Dichloroethane 26.590 70 - 130ND25.000 1062321132-01 ug/L 1 <br />MSD 26.120 1.8 20 70 - 130ND25.000 1042321132-01 ug/L 2 <br />MS1,1-Dichloroethene 29.230 70 - 130ND25.000 1172321132-01 ug/L 1 <br />MSD 29.180 0.2 20 70 - 130ND25.000 1172321132-01 ug/L 2 <br />MSToluene 22.300 70 - 130ND25.000 89.22321132-01 ug/L 1 <br />MSD 22.050 1.1 20 70 - 130ND25.000 88.22321132-01 ug/L 2 <br />MSTrichloroethene 25.050 70 - 1301.9300 25.000 92.52321132-01 ug/L 1 <br />MSD 24.880 0.7 20 70 - 1301.9300 25.000 91.82321132-01 ug/L 2 <br />MS1,2-Dichloroethane-d4 (Surrogate)11.040 75 - 125ND10.000 1102321132-01 ug/L 1 <br />MSD 10.510 4.9 75 - 125ND10.000 1052321132-01 ug/L 2 <br />MSToluene-d8 (Surrogate)10.360 80 - 120ND10.000 1042321132-01 ug/L 1 <br />MSD 10.340 0.2 80 - 120ND10.000 1032321132-01 ug/L 2 <br />MS4-Bromofluorobenzene (Surrogate)11.210 80 - 120ND10.000 1122321132-01 ug/L 1 <br />MSD 11.330 1.1 80 - 120ND10.000 1132321132-01 ug/L 2 <br />QC Batch ID: B178649 Used client sample: N <br />MSBenzene 29.440 70 - 130ND25.000 1182321403-01 ug/L 3 <br />MSD 28.920 1.8 20 70 - 130ND25.000 1162321403-01 ug/L 4 <br />MSBromodichloromethane 30.230 70 - 130ND25.000 1212321403-01 ug/L 3 <br />MSD 29.720 1.7 20 70 - 130ND25.000 1192321403-01 ug/L 4 <br />MSChlorobenzene 29.720 70 - 130ND25.000 1192321403-01 ug/L 3 <br />MSD 29.390 1.1 20 70 - 130ND25.000 1182321403-01 ug/L 4 <br />MSChloroethane 29.310 70 - 130ND25.000 1172321403-01 ug/L 3 <br />MSD 28.750 1.9 20 70 - 130ND25.000 1152321403-01 ug/L 4 <br />MS1,4-Dichlorobenzene 30.110 70 - 130ND25.000 1202321403-01 ug/L 3 <br />MSD 29.200 3.1 20 70 - 130ND25.000 1172321403-01 ug/L 4 <br />MS1,1-Dichloroethane 28.850 70 - 130ND25.000 1152321403-01 ug/L 3 <br />MSD 28.300 1.9 20 70 - 130ND25.000 1132321403-01 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 103 of 158Report ID: 1001472825