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m <br /> aceAna/ytica/ <br /> ENVIRONMENTAL SCIENCES <br /> Arcadis-SLO Reported: 04/14/2026 12:02 <br /> 4119 Broad Street Suite 210 Project: Forward Landfill-COELT <br /> San Luis Obispo,CA 93401 Project Number: 30274343.01 <br /> Project Manager: Dalia Rumani <br /> Water Analysis (General Chemistry) <br /> Quality Control Report - Precision & Accuracy <br /> Control Limits <br /> Source Source Spike Percent Percent Lab <br /> Constituent Type Sample ID Result Result Added Units RPD Recovery RPD Recovery Quals R# <br /> QC Batch ID: B226869 Used client sample: Y- Description: AMW-1, 02/03/2026 10:11 <br /> Bicarbonate DUP 2601733-12 271.74 266.18 mg/L 2.1 10 11 <br /> Carbonate DUP 2601733-12 ND ND mg/L 10 11 <br /> Total Alkalinity as CaCC3 DUP 2601733-12 222.87 218.31 mg/L 2.1 10 11 <br /> QC Batch ID: B226905 Used client sample: N <br /> Total Dissolved Solids @ 180 C DUP 2601984-01 107500 107100 mg/L 0.4 10 12 <br /> QC Batch ID: B226906 Used client sample: Y- Description: AMW-6, 02/03/2026 09:21 <br /> Total Dissolved Solids @ 180 C DUP 2601733-11 304.00 302.00 mg/L 0.7 10 13 <br /> QC Batch ID: B226972 Used client sample: Y- Description: AMW-1, 02/03/2026 10:11 <br /> Dissolved Sulfide DUP 2601733-12 ND ND mg/L 10 14 <br /> MS 2601733-12 ND 0.50434 0.50000 mg/L 101 80-120 15 <br /> MSD 2601733-12 ND 0.51025 0.50000 mg/L 1.2 102 10 80-120 16 <br /> QC Batch ID: B226973 Used client sample: Y- Description: AMW-7, 02/03/2026 11:14 <br /> Dissolved Sulfide DUP 2601733-13 ND ND mg/L 10 17 <br /> MS 2601733-13 ND 0.50237 0.50000 mg/L 100 80-120 18 <br /> MSD 2601733-13 ND 0.50828 0.50000 mg/L 1.2 102 10 80-120 19 <br /> QC Batch ID: B226974 Used client sample: Y- Description: AMW-4, 02/03/2026 12:32 <br /> Dissolved Sulfide DUP 2601733-14 ND ND mg/L 10 20 <br /> MS 2601733-14 ND 0.48464 0.50000 mg/L 96.9 80-120 21 <br /> MSD 2601733-14 ND 0.49055 0.50000 mg/L 1.2 98.1 10 80-120 22 <br /> QC Batch ID: B227221 Used client sample: Y- Description: AMW-1, 02/03/2026 10:11 <br /> Dissolved Cyanide DUP 2601733-12 ND ND mg/L 10 23 <br /> MS 2601733-12 ND 0.094960 0.10000 mg/L 95.0 90-110 24 <br /> MSD 2601733-12 ND 0.098120 0.10000 mg/L 3.3 98.1 20 90-110 25 <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 /> Report ID: 1001665842 4100 Atlas Court Bakersfield, CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 102 of 109 <br />