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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 />Forward Landfill 4Q24 Austin Unit <br />Ari Terry <br />Reported:12/18/2024 14:06 <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: B202190 Used client sample: N <br />Chloride DUP 966.14 0.1 10965.302419391-03 mg/L 1 <br />MS 1138.7 80 - 120965.30 252.53 68.7 Q032419391-03 mg/L 2 <br />MSD 1140.0 0.1 10 80 - 120965.30 252.53 69.2 Q032419391-03 mg/L 3 <br />Nitrate as N DUP ND 10ND2419391-03 mg/L 1 <br />MS 25.333 80 - 120ND25.253 1002419391-03 mg/L 2 <br />MSD 25.475 0.6 10 80 - 120ND25.253 1012419391-03 mg/L 3 <br />Sulfate DUP 18.060 3.8 1018.7552419391-03 mg/L 1 <br />MS 567.71 80 - 12018.755 505.05 1092419391-03 mg/L 2 <br />MSD 569.85 0.4 10 80 - 12018.755 505.05 1092419391-03 mg/L 3 <br />QC Batch ID: B202333 Used client sample: N <br />Bicarbonate DUP 1276.9 1.5 101258.02419391-03 mg/L 4 <br />Carbonate DUP ND 10ND2419391-03 mg/L 4 <br />QC Batch ID: B202469 Used client sample: N <br />Dissolved Calcium DUP 316.45 0.1 20316.832419421-03 mg/L 5 <br />MS 327.54 75 - 125316.83 10.204 1052419421-03 mg/L 6 <br />MSD 328.69 0.4 20 75 - 125316.83 10.204 1162419421-03 mg/L 7 <br />Dissolved Magnesium DUP 96.459 0.0 2096.5032419421-03 mg/L 5 <br />MS 108.12 75 - 12596.503 10.204 1142419421-03 mg/L 6 <br />MSD 106.81 1.2 20 75 - 12596.503 10.204 1012419421-03 mg/L 7 <br />Dissolved Sodium DUP 137.85 0.2 20137.532419421-03 mg/L 5 <br />MS 149.36 75 - 125137.53 10.204 1162419421-03 mg/L 6 <br />MSD 148.92 0.3 20 75 - 125137.53 10.204 1122419421-03 mg/L 7 <br />Dissolved Potassium DUP 36.134 0.2 2036.1892419421-03 mg/L 5 <br />MS 46.753 75 - 12536.189 10.204 1042419421-03 mg/L 6 <br />MSD 46.796 0.1 20 75 - 12536.189 10.204 1042419421-03 mg/L 7 <br />QC Batch ID: B202492 Used client sample: N <br />Dissolved Sulfide DUP ND 10ND2419343-31 mg/L 8 <br />MS 0.49658 80 - 120ND0.50000 99.32419343-31 mg/L 9 <br />MSD 0.49341 0.6 10 80 - 120ND0.50000 98.72419343-31 mg/L 10 <br />QC Batch ID: B202563 Used client sample: N <br />Total Dissolved Solids @ 180 C DUP 586.66 0 10586.662419450-01 mg/L 11 <br />QC Batch ID: B202924 Used client sample: N <br />Dissolved Cyanide DUP ND 10ND2419454-01 mg/L 12 <br />MS 0.097943 90 - 110ND0.10000 97.92419454-01 mg/L 13 <br />MSD 0.10011 2.2 20 90 - 110ND0.10000 1002419454-01 mg/L 14 <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 38 of 44Report ID: 1001558598