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C ace Analytical ENVIRONMENTAL SCIENCES Arcadis-SLO Reported: 04/14/2026 11:46 4119 Broad Street Suite 210 Project: Forward Landfill-COELT San Luis Obispo,CA 93401 Project Number: 30274343.01 1Q26 Groundwater Monitoring Wells Project Manager: Dalia Rumani Water Analysis (General Chemistry) Pace Sample ID: 2601898-16 Client Sample Name: 1Q26,AMW-2,AMW-2,2/5/2026 1:00:OOPM,Manuel/Del-Tech MB Lab Constituent Result Units PQL MDL Method Bias Qualls DCN Dissolved Calcium 47 mg/L 0.10 0.016 EPA-6010B ND 1 Dissolved Magnesium 20 mg/L 0.050 0.022 EPA-6010B ND 1 Dissolved Sodium 38 mg/L 1.0 0.051 EPA-6010B ND 1 Dissolved Potassium 5.9 mg/L 1.0 0.10 EPA-6010B ND 1 Bicarbonate 220 mg/L 5.0 5.0 EPA-310.1 ND 2 Carbonate ND mg/L 2.5 2.5 EPA-310.1 ND 2 Chloride 34 mg/L 0.50 0.13 EPA-300.0 0.25 3 Nitrate as N 1.2 mg/L 0.10 0.024 EPA-300.0 0.034 3 Sulfate 26 mg/L 1.0 0.14 EPA-300.0 0.36 3 Dissolved Cyanide ND mg/L 0.0050 0.0017 EPA-9010C ND 4 Dissolved Sulfide ND mg/L 0.10 0.050 SM-450OSD ND 5 Run QC DCN Method Prep Date Date/Time Analyst Instrument Dilution Batch ID Prep Method 1 EPA-6010B 02/09/26 12:21 02/09/26 20:54 JEH ICP6 1 B226888 601OB/No Digestion 2 EPA-310.1 02/12/26 08:00 02/12/26 09:39 JMH2 MET-1 1 B227114 No Prep 3 EPA-300.0 02/06/26 09:00 02/06/26 17:56 PRE IC5 1 B226785 No Prep 4 EPA-901 OC 02/13/26 11:53 02/13/26 15:12 RC1 KONE-1 1 B227221 EPA 9010 5 SM-450OSD 02/09/26 11:45 02/09/26 11:45 JT3 SPEC06 1 B226896 SM 450OSD DCN=Data Continuation Number 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. 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. Report ID 1001665835 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 86 of 116