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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:02/05/2024 9:18 <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: B181107 Used client sample: N <br />Bicarbonate DUP 13.180 16.5 1011.169 A022401362-02 mg/L 1 <br />Carbonate DUP ND 10ND2401362-02 mg/L 1 <br />QC Batch ID: B181108 Used client sample: Y - Description: AMW-43S, 01/22/2024 15:09 <br />Bicarbonate DUP 172.43 0.9 10170.972401378-06 mg/L 2 <br />Carbonate DUP ND 10ND2401378-06 mg/L 2 <br />QC Batch ID: B182497 Used client sample: Y - Description: AMW-25, 01/22/2024 10:08 <br />Chloride DUP 61.404 0.1 1061.3552401378-01 mg/L 3 <br />MS 114.25 80 - 12061.355 50.505 1052401378-01 mg/L 4 <br />MSD 114.27 0.0 10 80 - 12061.355 50.505 1052401378-01 mg/L 5 <br />Nitrate as N DUP 7.8356 0.2 107.82142401378-01 mg/L 3 <br />MS 12.996 80 - 1207.8214 5.0505 1022401378-01 mg/L 4 <br />MSD 13.002 0.0 10 80 - 1207.8214 5.0505 1032401378-01 mg/L 5 <br />Sulfate DUP 32.865 0.0 1032.8702401378-01 mg/L 3 <br />MS 141.34 80 - 12032.870 101.01 1072401378-01 mg/L 4 <br />MSD 141.33 0.0 10 80 - 12032.870 101.01 1072401378-01 mg/L 5 <br />QC Batch ID: B182630 Used client sample: N <br />Total Suspended Solids (Glass <br />Fiber) <br />DUP 4.0000 6.5 103.75002401379-02 mg/L 6 <br />QC Batch ID: B182702 Used client sample: Y - Description: AMW-18, 01/22/2024 11:32 <br />Dissolved Calcium DUP 110.75 7.3 20102.932401378-03 mg/L 7 <br />MS 119.79 75 - 125102.93 10.204 165 A032401378-03 mg/L 8 <br />MSD 119.51 0.2 20 75 - 125102.93 10.204 162 A032401378-03 mg/L 9 <br />Dissolved Magnesium DUP 52.670 8.1 2048.5862401378-03 mg/L 7 <br />MS 62.580 75 - 12548.586 10.204 137 A032401378-03 mg/L 8 <br />MSD 63.791 1.9 20 75 - 12548.586 10.204 149 A032401378-03 mg/L 9 <br />Dissolved Sodium DUP 50.469 8.8 2046.2322401378-03 mg/L 7 <br />MS 59.984 75 - 12546.232 10.204 135 A032401378-03 mg/L 8 <br />MSD 60.010 0.0 20 75 - 12546.232 10.204 135 A032401378-03 mg/L 9 <br />Dissolved Potassium DUP 5.9376 7.3 205.52182401378-03 mg/L 7 <br />MS 16.107 75 - 1255.5218 10.204 1042401378-03 mg/L 8 <br />MSD 16.155 0.3 20 75 - 1255.5218 10.204 1042401378-03 mg/L 9 <br />QC Batch ID: B182752 Used client sample: Y - Description: AMW-18B, 01/22/2024 11:07 <br />Total Dissolved Solids @ 180 C DUP 526.66 0.6 10523.332401378-02 mg/L 10 <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 79 of 84Report ID: 1001487301