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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 />30216409.01 4Q24 Austin Unit <br />Ari Terry <br />Reported:12/04/2024 10:08 <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: B200215 Used client sample: N <br />Bicarbonate DUP 279.35 0.4 10280.462418656-02 mg/L 1 <br />Carbonate DUP 18.611 2.0 1018.2452418656-02 mg/L 1 <br />QC Batch ID: B200216 Used client sample: Y - Description: AMW-18, 11/19/2024 10:53 <br />Bicarbonate DUP 358.37 1.9 10351.692418678-02 mg/L 2 <br />Carbonate DUP ND 10ND2418678-02 mg/L 2 <br />QC Batch ID: B201480 Used client sample: Y - Description: AMW-18B, 11/19/2024 10:25 <br />Chloride DUP 63.375 2.1 1062.0842418678-01 mg/L 3 <br />MS 114.77 80 - 12062.084 50.505 1042418678-01 mg/L 4 <br />MSD 115.01 0.2 10 80 - 12062.084 50.505 1052418678-01 mg/L 5 <br />Nitrate as N DUP 9.2090 2.0 109.02802418678-01 mg/L 3 <br />MS 14.253 80 - 1209.0280 5.0505 1032418678-01 mg/L 4 <br />MSD 14.239 0.1 10 80 - 1209.0280 5.0505 1032418678-01 mg/L 5 <br />Sulfate DUP 53.078 2.4 1051.8402418678-01 mg/L 3 <br />MS 160.62 80 - 12051.840 101.01 1082418678-01 mg/L 4 <br />MSD 160.84 0.1 10 80 - 12051.840 101.01 1082418678-01 mg/L 5 <br />QC Batch ID: B201484 Used client sample: N <br />Dissolved Calcium DUP 111.16 0.2 20110.992418634-03 mg/L 6 <br />MS 121.60 75 - 125110.99 10.204 1042418634-03 mg/L 7 <br />MSD 122.28 0.6 20 75 - 125110.99 10.204 1112418634-03 mg/L 8 <br />Dissolved Magnesium DUP 6.8903 0.0 206.88782418634-03 mg/L 6 <br />MS 17.318 75 - 1256.8878 10.204 1022418634-03 mg/L 7 <br />MSD 17.593 1.6 20 75 - 1256.8878 10.204 1052418634-03 mg/L 8 <br />Dissolved Sodium DUP 483.50 0.1 20482.932418634-03 mg/L 6 <br />MS 492.40 75 - 125482.93 10.204 92.82418634-03 mg/L 7 <br />MSD 498.77 1.3 20 75 - 125482.93 10.204 155 A032418634-03 mg/L 8 <br />Dissolved Potassium DUP 1.2089 10.3 201.09042418634-03 mg/L 6 <br />MS 11.666 75 - 1251.0904 10.204 1042418634-03 mg/L 7 <br />MSD 11.945 2.4 20 75 - 1251.0904 10.204 1062418634-03 mg/L 8 <br />QC Batch ID: B201538 Used client sample: Y - Description: AMW-4, 11/19/2024 15:38 <br />Dissolved Sulfide DUP ND 10ND2418678-07 mg/L 9 <br />MS 0.52013 80 - 120ND0.50000 1042418678-07 mg/L 10 <br />MSD 0.52592 1.1 10 80 - 120ND0.50000 1052418678-07 mg/L 11 <br />QC Batch ID: B201582 Used client sample: Y - Description: AMW-18B, 11/19/2024 10:25 <br />Total Dissolved Solids @ 180 C DUP 563.33 3.0 10546.662418678-01 mg/L 12 <br />QC Batch ID: B201694 Used client sample: N <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 63 of 71Report ID: 1001554839