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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 FWD Unit 30167676.01 <br />Ari Terry <br />Reported:02/19/2024 14:08 <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: B181148 Used client sample: N <br />Bicarbonate DUP 246.76 0.9 10244.552402075-01 mg/L 1 <br />Carbonate DUP 15.841 12.0 1014.042 A022402075-01 mg/L 1 <br />QC Batch ID: B181149 Used client sample: Y - Description: D-02, 02/02/2024 14:09 <br />Bicarbonate DUP 2098.1 1.2 102072.92402125-10 mg/L 2 <br />Carbonate DUP ND 10ND2402125-10 mg/L 2 <br />QC Batch ID: B183299 Used client sample: Y - Description: D-93/95, 02/02/2024 13:20 <br />Chloride DUP 820.02 1.1 10811.30 A102402125-02RE1 mg/L 3 <br />MS 1069.7 80 - 120811.30 252.53 102 A102402125-02RE1 mg/L 4 <br />MSD 1070.0 0.0 10 80 - 120811.30 252.53 102 A102402125-02RE1 mg/L 5 <br />Nitrate as N DUP ND 10ND A102402125-02RE1 mg/L 3 <br />MS 24.791 80 - 120ND25.253 98.2 A102402125-02RE1 mg/L 4 <br />MSD 24.798 0.0 10 80 - 120ND25.253 98.2 A102402125-02RE1 mg/L 5 <br />Sulfate DUP 105.14 1.5 10103.62 A102402125-02RE1 mg/L 3 <br />MS 659.93 80 - 120103.62 505.05 110 A102402125-02RE1 mg/L 4 <br />MSD 659.95 0.0 10 80 - 120103.62 505.05 110 A102402125-02RE1 mg/L 5 <br />QC Batch ID: B183411 Used client sample: N <br />Dissolved Sulfide DUP ND 10ND2401998-01 mg/L 6 <br />MS 0.51821 80 - 120ND0.50000 1042401998-01 mg/L 7 <br />MSD 0.51422 0.8 10 80 - 120ND0.50000 1032401998-01 mg/L 8 <br />QC Batch ID: B183412 Used client sample: N <br />Dissolved Sulfide DUP ND 10ND2402126-01 mg/L 9 <br />MS 0.49023 80 - 120ND0.50000 98.02402126-01 mg/L 10 <br />MSD 0.47824 2.5 10 80 - 120ND0.50000 95.62402126-01 mg/L 11 <br />QC Batch ID: B183557 Used client sample: Y - Description: D-93/95, 02/02/2024 13:20 <br />Total Dissolved Solids @ 180 C DUP 3400.0 4.2 103260.02402125-02 mg/L 12 <br />QC Batch ID: B183659 Used client sample: N <br />Dissolved Calcium DUP 137.40 1.5 20135.412402016-07 mg/L 13 <br />MS 185.46 75 - 125135.41 51.020 98.12402016-07 mg/L 14 <br />MSD 186.75 0.7 20 75 - 125135.41 51.020 1012402016-07 mg/L 15 <br />Dissolved Magnesium DUP 267.41 1.0 20270.132402016-07 mg/L 13 <br />MS 322.61 75 - 125270.13 51.020 1032402016-07 mg/L 14 <br />MSD 326.92 1.3 20 75 - 125270.13 51.020 1112402016-07 mg/L 15 <br />Dissolved Sodium DUP 1285.0 3.4 201242.52402016-07 mg/L 13 <br />MS 1280.7 75 - 1251242.5 51.020 74.92402016-07 mg/L 14 <br />MSD 1300.6 1.5 20 75 - 1251242.5 51.020 1142402016-07 mg/L 15 <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 75 of 99Report ID: 1001490723