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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 />30167676.01 <br />Drew Feucht <br />Reported:12/08/2023 8:24 <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: B175402 Used client sample: Y - Description: AMW-40S, 11/02/2023 14:48 <br />Bicarbonate DUP 185.12 0.8 10183.642320927-01 mg/L 1 <br />Carbonate DUP ND 10ND2320927-01 mg/L 1 <br />QC Batch ID: B177356 Used client sample: N <br />Dissolved Calcium DUP 70.238 1.7 2071.4142320742-01 mg/L 2 <br />MS 75.657 75 - 12571.414 10.204 41.6 A032320742-01 mg/L 3 <br />MSD 74.587 1.4 20 75 - 12571.414 10.204 31.1 A032320742-01 mg/L 4 <br />Dissolved Magnesium DUP 8.7434 3.8 208.41372320742-01 mg/L 2 <br />MS 18.102 75 - 1258.4137 10.204 94.92320742-01 mg/L 3 <br />MSD 17.754 1.9 20 75 - 1258.4137 10.204 91.52320742-01 mg/L 4 <br />Dissolved Sodium DUP 76.025 5.3 2080.1722320742-01 mg/L 5 <br />MS 86.695 75 - 12580.172 10.204 63.9 A032320742-01 mg/L 6 <br />MSD 87.702 1.2 20 75 - 12580.172 10.204 73.8 A032320742-01 mg/L 7 <br />Dissolved Potassium DUP 4.2745 4.7 204.48202320742-01 mg/L 5 <br />MS 15.388 75 - 1254.4820 10.204 1072320742-01 mg/L 6 <br />MSD 15.690 1.9 20 75 - 1254.4820 10.204 1102320742-01 mg/L 7 <br />QC Batch ID: B177461 Used client sample: N <br />Chloride DUP 85.475 0.8 1084.7612320920-01 mg/L 8 <br />MS 194.21 80 - 12084.761 101.01 1082320920-01 mg/L 9 <br />MSD 194.22 0.0 10 80 - 12084.761 101.01 1082320920-01 mg/L 10 <br />Nitrate as N DUP 0.10600 0.9 100.10500 J2320920-01 mg/L 8 <br />MS 9.3677 80 - 1200.10500 10.101 91.72320920-01 mg/L 9 <br />MSD 9.3830 0.2 10 80 - 1200.10500 10.101 91.92320920-01 mg/L 10 <br />Sulfate DUP 2.9420 0.3 102.93262320920-01 mg/L 8 <br />MS 211.52 80 - 1202.9326 202.02 1032320920-01 mg/L 9 <br />MSD 211.49 0.0 10 80 - 1202.9326 202.02 1032320920-01 mg/L 10 <br />QC Batch ID: B178055 Used client sample: Y - Description: AMW-40S, 11/02/2023 14:48 <br />Total Dissolved Solids @ 180 C DUP 282.00 5.8 10266.002320927-01 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 26 of 31Report ID: 1001474380