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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 />1Q24 Austin Unit <br />Ari Terry <br />Reported:02/02/2024 14:37 <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: B181112 Used client sample: N <br />Bicarbonate DUP 13.546 2.7 1013.1802401468-03 mg/L 1 <br />Carbonate DUP ND 10ND2401468-03 mg/L 1 <br />QC Batch ID: B181113 Used client sample: Y - Description: AMW-21S, 01/23/2024 12:31 <br />Bicarbonate DUP 270.73 0.5 10269.452401469-11 mg/L 2 <br />Carbonate DUP ND 10ND2401469-11 mg/L 2 <br />QC Batch ID: B182627 Used client sample: Y - Description: AMW-23S, 01/23/2024 10:56 <br />Chloride DUP 29.766 1.3 1030.1682401469-01RE1 mg/L 3 <br />MS 133.17 80 - 12030.168 101.01 1022401469-01RE1 mg/L 4 <br />MSD 134.22 0.8 10 80 - 12030.168 101.01 1032401469-01RE1 mg/L 5 <br />Nitrate as N DUP 21.978 0.4 1021.8982401469-01RE1 mg/L 3 <br />MS 31.364 80 - 12021.898 10.101 93.72401469-01RE1 mg/L 4 <br />MSD 31.374 0.0 10 80 - 12021.898 10.101 93.82401469-01RE1 mg/L 5 <br />Sulfate DUP 54.972 0.6 1054.6662401469-01RE1 mg/L 3 <br />MS 261.78 80 - 12054.666 202.02 1032401469-01RE1 mg/L 4 <br />MSD 260.87 0.4 10 80 - 12054.666 202.02 1022401469-01RE1 mg/L 5 <br />QC Batch ID: B182628 Used client sample: Y - Description: AMW-21, 01/23/2024 13:43 <br />Chloride DUP 16.603 0.6 1016.7062401469-12 mg/L 6 <br />MS 75.192 80 - 12016.706 50.505 1162401469-12 mg/L 7 <br />MSD 74.990 0.3 10 80 - 12016.706 50.505 1152401469-12 mg/L 8 <br />Nitrate as N DUP 3.1710 0.3 103.18102401469-12 mg/L 6 <br />MS 8.7485 80 - 1203.1810 5.0505 1102401469-12 mg/L 7 <br />MSD 8.7434 0.1 10 80 - 1203.1810 5.0505 1102401469-12 mg/L 8 <br />Sulfate DUP 28.561 0.2 1028.6212401469-12 mg/L 6 <br />MS 144.79 80 - 12028.621 101.01 1152401469-12 mg/L 7 <br />MSD 145.04 0.2 10 80 - 12028.621 101.01 1152401469-12 mg/L 8 <br />QC Batch ID: B182703 Used client sample: Y - Description: AMW-23M, 01/23/2024 12:00 <br />Dissolved Calcium DUP 53.594 6.8 2057.3502401469-03 mg/L 9 <br />MS 68.790 75 - 12557.350 10.204 1122401469-03 mg/L 10 <br />MSD 68.080 1.0 20 75 - 12557.350 10.204 1052401469-03 mg/L 11 <br />Dissolved Magnesium DUP 29.453 3.1 2028.5562401469-03 mg/L 12 <br />MS 40.754 75 - 12528.556 10.204 1202401469-03 mg/L 13 <br />MSD 41.192 1.1 20 75 - 12528.556 10.204 1242401469-03 mg/L 14 <br />Dissolved Sodium DUP 32.606 5.7 2034.5052401469-03 mg/L 9 <br />MS 45.726 75 - 12534.505 10.204 1102401469-03 mg/L 10 <br />MSD 45.530 0.4 20 75 - 12534.505 10.204 1082401469-03 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 92 of 98Report ID: 1001487114