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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 />Forward Landfill Austin Unit <br />Drew Feucht <br />Reported:09/13/2023 9:53 <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: B169767 Used client sample: N <br />Bicarbonate DUP 465.96 1.0 10461.132315200-05 mg/L 1 <br />Carbonate DUP ND 10ND2315200-05 mg/L 1 <br />QC Batch ID: B171339 Used client sample: N <br />Chloride DUP 19.206 0.3 1019.1582315136-02 mg/L 2 <br />MS 75.582 80 - 12019.158 50.505 1122315136-02 mg/L 3 <br />MSD 75.786 0.3 10 80 - 12019.158 50.505 1122315136-02 mg/L 4 <br />Nitrate as N DUP 3.5490 0.3 103.54002315136-02 mg/L 2 <br />MS 9.0515 80 - 1203.5400 5.0505 1092315136-02 mg/L 3 <br />MSD 9.1081 0.6 10 80 - 1203.5400 5.0505 1102315136-02 mg/L 4 <br />Sulfate DUP 88.573 0.3 1088.3152315136-02 mg/L 2 <br />MS 201.81 80 - 12088.315 101.01 1122315136-02 mg/L 3 <br />MSD 202.66 0.4 10 80 - 12088.315 101.01 1132315136-02 mg/L 4 <br />QC Batch ID: B171609 Used client sample: N <br />Total Dissolved Solids @ 180 C DUP 2350.0 1.3 102320.02315113-01 mg/L 5 <br />QC Batch ID: B172390 Used client sample: N <br />Dissolved Calcium DUP 60.917 1.0 2060.3212315136-04 mg/L 6 <br />MS 71.728 75 - 12560.321 10.204 1122315136-04 mg/L 7 <br />MSD 72.585 1.2 20 75 - 12560.321 10.204 1202315136-04 mg/L 8 <br />Dissolved Magnesium DUP 13.551 3.4 2013.0932315136-04 mg/L 6 <br />MS 24.022 75 - 12513.093 10.204 1072315136-04 mg/L 7 <br />MSD 24.082 0.2 20 75 - 12513.093 10.204 1082315136-04 mg/L 8 <br />Dissolved Sodium DUP 19.626 1.7 2019.3042315136-04 mg/L 6 <br />MS 30.005 75 - 12519.304 10.204 1052315136-04 mg/L 7 <br />MSD 30.843 2.8 20 75 - 12519.304 10.204 1132315136-04 mg/L 8 <br />Dissolved Potassium DUP 2.6321 3.7 202.73112315136-04 mg/L 9 <br />MS 12.536 75 - 1252.7311 10.204 96.12315136-04 mg/L 10 <br />MSD 12.943 3.2 20 75 - 1252.7311 10.204 1002315136-04 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 36 of 41Report ID: 1001455396