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C <br /> ace Analytical <br /> ENVIRONMENTAL SCIENCES <br /> Arcadis-SLO Reported: 02/13/2026 16:34 <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 /> Pace Sample ID: 2601426-01 Client Sample Name: Forward LF,AMW-57S,AMW-57S,1/28/2026 11:06:OOAM,Antonio Del-Tech/Manuel <br /> MB Lab <br /> Constituent Result Units PQL MDL Method Bias Quals DCN <br /> Dissolved Calcium 40 mg/L 0.10 0.016 EPA-6010B ND 1 <br /> Dissolved Magnesium 19 mg/L 0.050 0.022 EPA-6010B ND 1 <br /> Dissolved Sodium 37 mg/L 1.0 0.051 EPA-6010B ND 1 <br /> Dissolved Potassium 4.3 mg/L 1.0 0.10 EPA-6010B ND 1 <br /> Bicarbonate 280 mg/L 5.0 5.0 EPA-310.1 ND 2 <br /> Carbonate ND mg/L 2.5 2.5 EPA-310.1 ND 2 <br /> Total Alkalinity as CaCO3 230 mg/L 4.1 4.1 EPA-310.1 ND 2 <br /> Chloride 6.2 mg/L 0.50 0.13 EPA-300.0 0.18 3 <br /> Nitrate as N 0.78 mg/L 0.10 0.024 EPA-300.0 ND 3 <br /> Sulfate 21 mg/L 1.0 0.14 EPA-300.0 0.26 3 <br /> Total Dissolved Solids @ 180 C 360 mg/L 20 10 EPA-160.1 ND A10 4 <br /> Run QC <br /> DCN Method Prep Date Date/Time Analyst Instrument Dilution Batch ID Prep Method <br /> 1 EPA-6010B 01/30/26 16:17 01/30/26 20:00 JEH ICP5 1 B226452 601OB/No Digestion <br /> 2 EPA-310.1 02/02/26 09:23 02/02/26 13:07 JMH2 META 1 B226484 No Prep <br /> 3 EPA-300.0 01/29/26 08:00 01/29/26 10:05 CAE IC7 1 B226354 No Prep <br /> 4 EPA-160.1 02/02/26 15:23 02/02/26 15:23 RLH MANUAL 2 B226525 No Prep <br /> DCN=Data Continuation Number <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: 1001653944 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 14 of 98 <br />