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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 30167676.01 <br />Ari Terry <br />Reported:02/28/2024 11:01 <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: B181149 Used client sample: N <br />Bicarbonate DUP 2098.1 1.2 102072.92402125-10 mg/L 1 <br />Carbonate DUP ND 10ND2402125-10 mg/L 1 <br />QC Batch ID: B181150 Used client sample: Y - Description: FU-19E, 02/02/2024 13:30 <br />Bicarbonate DUP 1413.9 1.4 101394.12402126-09 mg/L 2 <br />Carbonate DUP ND 10ND2402126-09 mg/L 2 <br />QC Batch ID: B183300 Used client sample: Y - Description: FU-03, 02/02/2024 12:33 <br />Chloride DUP 814.13 2.1 10797.312402126-01 mg/L 3 <br />MS 1072.0 80 - 120797.31 252.53 1092402126-01 mg/L 4 <br />MSD 1073.1 0.1 10 80 - 120797.31 252.53 1092402126-01 mg/L 5 <br />Nitrate as N DUP ND 10ND2402126-01 mg/L 3 <br />MS 26.468 80 - 120ND25.253 1052402126-01 mg/L 4 <br />MSD 26.493 0.1 10 80 - 120ND25.253 1052402126-01 mg/L 5 <br />Sulfate DUP 3.1860 0.9 103.2150 J2402126-01 mg/L 3 <br />MS 544.07 80 - 1203.2150 505.05 1072402126-01 mg/L 4 <br />MSD 544.16 0.0 10 80 - 1203.2150 505.05 1072402126-01 mg/L 5 <br />QC Batch ID: B183412 Used client sample: Y - Description: FU-03, 02/02/2024 12:33 <br />Dissolved Sulfide DUP ND 10ND2402126-01 mg/L 6 <br />MS 0.49023 80 - 120ND0.50000 98.02402126-01 mg/L 7 <br />MSD 0.47824 2.5 10 80 - 120ND0.50000 95.62402126-01 mg/L 8 <br />QC Batch ID: B183413 Used client sample: Y - Description: FU-17, 02/02/2024 13:40 <br />Dissolved Sulfide DUP 0.056480 6.8 100.060470 J2402126-10 mg/L 9 <br />MS 0.47624 80 - 1200.060470 0.50000 83.22402126-10 mg/L 10 <br />MSD 0.46025 3.4 10 80 - 1200.060470 0.50000 80.02402126-10 mg/L 11 <br />QC Batch ID: B183558 Used client sample: Y - Description: FU-03, 02/02/2024 12:33 <br />Total Dissolved Solids @ 180 C DUP 2630.0 0.8 102610.02402126-01 mg/L 12 <br />QC Batch ID: B183661 Used client sample: Y - Description: FU-03, 02/02/2024 12:33 <br />Dissolved Calcium DUP 329.06 4.2 20315.462402126-01 mg/L 13 <br />MS 329.17 75 - 125315.46 10.204 134 A032402126-01 mg/L 14 <br />MSD 321.15 2.5 20 75 - 125315.46 10.204 55.7 A032402126-01 mg/L 15 <br />Dissolved Magnesium DUP 185.18 0.2 20185.542402126-01 mg/L 13 <br />MS 195.84 75 - 125185.54 10.204 1012402126-01 mg/L 14 <br />MSD 190.45 2.8 20 75 - 125185.54 10.204 48.1 A032402126-01 mg/L 15 <br />Dissolved Sodium DUP 331.29 3.8 20318.952402126-01 mg/L 13 <br />MS 331.87 75 - 125318.95 10.204 127 A032402126-01 mg/L 14 <br />MSD 325.19 2.0 20 75 - 125318.95 10.204 61.2 A032402126-01 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 73 of 97Report ID: 1001492876