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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 />4Q24 Austin Unit <br />Ari Terry <br />Reported:12/05/2024 12:11 <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: B201949 Used client sample: Y - Description: AMW-59M, 11/21/2024 09:52 <br />MS1,1-Dichloroethene 27.780 70 - 130ND25.000 1112418847-01 ug/L 3 <br />MSD 27.980 0.7 20 70 - 130ND25.000 1122418847-01 ug/L 4 <br />MSToluene 26.200 70 - 130ND25.000 1052418847-01 ug/L 3 <br />MSD 26.950 2.8 20 70 - 130ND25.000 1082418847-01 ug/L 4 <br />MSTrichloroethene 25.920 70 - 1300.39000 25.000 1022418847-01 ug/L 3 <br />MSD 26.760 3.2 20 70 - 1300.39000 25.000 1052418847-01 ug/L 4 <br />MS1,2-Dichloroethane-d4 <br />(Surrogate) <br />8.7400 75 - 125ND10.000 87.42418847-01 ug/L 3 <br />MSD 7.1300 20.3 75 - 125ND10.000 71.3 S092418847-01 ug/L 4 <br />MSToluene-d8 (Surrogate)10.170 80 - 120ND10.000 1022418847-01 ug/L 3 <br />MSD 10.110 0.6 80 - 120ND10.000 1012418847-01 ug/L 4 <br />MS4-Bromofluorobenzene (Surrogate)9.5700 80 - 120ND10.000 95.72418847-01 ug/L 3 <br />MSD 9.2700 3.2 80 - 120ND10.000 92.72418847-01 ug/L 4 <br />QC Batch ID: B202019 Used client sample: N <br />MSBenzene 27.930 70 - 130ND25.000 1122418967-01 ug/L 5 <br />MSD 27.730 0.7 20 70 - 130ND25.000 1112418967-01 ug/L 6 <br />MSBromodichloromethane 28.140 70 - 130ND25.000 1132418967-01 ug/L 5 <br />MSD 28.770 2.2 20 70 - 130ND25.000 1152418967-01 ug/L 6 <br />MSChlorobenzene 29.240 70 - 130ND25.000 1172418967-01 ug/L 5 <br />MSD 29.550 1.1 20 70 - 130ND25.000 1182418967-01 ug/L 6 <br />MSChloroethane 27.500 70 - 130ND25.000 1102418967-01 ug/L 5 <br />MSD 27.180 1.2 20 70 - 130ND25.000 1092418967-01 ug/L 6 <br />MS1,4-Dichlorobenzene 28.080 70 - 130ND25.000 1122418967-01 ug/L 5 <br />MSD 27.910 0.6 20 70 - 130ND25.000 1122418967-01 ug/L 6 <br />MS1,1-Dichloroethane 27.280 70 - 130ND25.000 1092418967-01 ug/L 5 <br />MSD 27.000 1.0 20 70 - 130ND25.000 1082418967-01 ug/L 6 <br />MS1,1-Dichloroethene 28.570 70 - 130ND25.000 1142418967-01 ug/L 5 <br />MSD 28.400 0.6 20 70 - 130ND25.000 1142418967-01 ug/L 6 <br />MSToluene 28.470 70 - 130ND25.000 1142418967-01 ug/L 5 <br />MSD 28.690 0.8 20 70 - 130ND25.000 1152418967-01 ug/L 6 <br />MSTrichloroethene 28.820 70 - 130ND25.000 1152418967-01 ug/L 5 <br />MSD 28.870 0.2 20 70 - 130ND25.000 1152418967-01 ug/L 6 <br />MS1,2-Dichloroethane-d4 (Surrogate)9.3900 75 - 125ND10.000 93.92418967-01 ug/L 5 <br />MSD 8.7900 6.6 75 - 125ND10.000 87.92418967-01 ug/L 6 <br />MSToluene-d8 (Surrogate)9.9200 80 - 120ND10.000 99.22418967-01 ug/L 5 <br />MSD 10.150 2.3 80 - 120ND10.000 1022418967-01 ug/L 6 <br />MS4-Bromofluorobenzene (Surrogate)10.200 80 - 120ND10.000 1022418967-01 ug/L 5 <br />MSD 10.100 1.0 80 - 120ND10.000 1012418967-01 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 125 of 134Report ID: 1001555155