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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 />Water Analysis (General Chemistry) <br />Source Lab <br />R# <br />QC Batch ID: B200224 Used client sample: N <br />Bicarbonate DUP 453.72 1.2 10448.152418829-06 mg/L 1 <br />Carbonate DUP ND 10ND2418829-06 mg/L 1 <br />QC Batch ID: B200225 Used client sample: Y - Description: AMW-54, 11/21/2024 12:58 <br />Bicarbonate DUP 522.35 1.1 10516.782418847-07 mg/L 2 <br />Carbonate DUP ND 10ND2418847-07 mg/L 2 <br />QC Batch ID: B201637 Used client sample: Y - Description: AMW-59M, 11/21/2024 09:52 <br />Chloride DUP 10.349 1.3 1010.4832418847-01 mg/L 3 <br />MS 66.224 80 - 12010.483 50.505 1102418847-01 mg/L 4 <br />MSD 66.471 0.4 10 80 - 12010.483 50.505 1112418847-01 mg/L 5 <br />Nitrate as N DUP 1.0660 1.9 101.08602418847-01 mg/L 3 <br />MS 6.4131 80 - 1201.0860 5.0505 1052418847-01 mg/L 4 <br />MSD 6.4263 0.2 10 80 - 1201.0860 5.0505 1062418847-01 mg/L 5 <br />Sulfate DUP 27.949 1.7 1028.4152418847-01 mg/L 3 <br />MS 140.55 80 - 12028.415 101.01 1112418847-01 mg/L 4 <br />MSD 140.43 0.1 10 80 - 12028.415 101.01 1112418847-01 mg/L 5 <br />QC Batch ID: B201638 Used client sample: Y - Description: 7833-MW-04, 11/21/2024 10:20 <br />Chloride DUP 111.78 0.6 10111.102418847-13 mg/L 6 <br />MS 161.16 80 - 120111.10 50.505 99.12418847-13 mg/L 7 <br />MSD 160.98 0.1 10 80 - 120111.10 50.505 98.82418847-13 mg/L 8 <br />Nitrate as N DUP 18.400 0.6 1018.2882418847-13 mg/L 6 <br />MS 22.801 80 - 12018.288 5.0505 89.42418847-13 mg/L 7 <br />MSD 22.715 0.4 10 80 - 12018.288 5.0505 87.72418847-13 mg/L 8 <br />Sulfate DUP 33.447 1.0 1033.1112418847-13 mg/L 6 <br />MS 145.11 80 - 12033.111 101.01 1112418847-13 mg/L 7 <br />MSD 144.50 0.4 10 80 - 12033.111 101.01 1102418847-13 mg/L 8 <br />QC Batch ID: B201707 Used client sample: Y - Description: AMW-58M, 11/21/2024 10:53 <br />Dissolved Calcium DUP 66.909 0.2 2067.0332418847-03 mg/L 9 <br />MS 77.335 75 - 12567.033 10.204 1012418847-03 mg/L 10 <br />MSD 77.743 0.5 20 75 - 12567.033 10.204 1052418847-03 mg/L 11 <br />Dissolved Magnesium DUP 36.366 0.3 2036.2562418847-03 mg/L 9 <br />MS 46.765 75 - 12536.256 10.204 1032418847-03 mg/L 10 <br />MSD 46.535 0.5 20 75 - 12536.256 10.204 1012418847-03 mg/L 11 <br />Dissolved Sodium DUP 41.635 1.2 2041.1582418847-03 mg/L 9 <br />MS 51.639 75 - 12541.158 10.204 1032418847-03 mg/L 10 <br />MSD 51.791 0.3 20 75 - 12541.158 10.204 1042418847-03 mg/L 11 <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 129 of 134Report ID: 1001555155