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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 /> 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: B226485 Used client sample: Y- Description: AMW-43S, 01/28/2026 10:52 <br /> Bicarbonate DUP 2601426-07 232.24 231.87 mg/L 0.2 10 11 <br /> Carbonate DUP 2601426-07 ND ND mg/L 10 11 <br /> Total Alkalinity as CaCO3 DUP 2601426-07 190.47 190.17 mg/L 0.2 10 11 <br /> QC Batch ID: B226525 Used client sample: N <br /> Total Dissolved Solids @ 180 C DUP 2601367-01 51067 52727 mg/L 3.2 10 12 <br /> QC Batch ID: B226526 Used client sample: Y-Description: AMW-37, 01/28/2026 14:22 <br /> Total Dissolved Solids @ 180 C DUP 2601426-04 456.00 406.00 mg/L 11.6 10 Q01 13 <br /> Run <br /> Run# QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br /> 1 B226354-DUP1 DUP EPA-300.0 01/29/26 01/29/2610:23 OAE IC7 1 <br /> 2 B226354-MS1 MS EPA-300.0 01/29/26 01/29/2610:41 OAE IC7 1.010 <br /> 3 B226354-MSD1 MSD EPA-300.0 01/29/26 01/29/2610:59 OAE IC7 1.010 <br /> 4 B226355-DUP1 DUP EPA-300.0 01/29/26 01/29/2615:27 PRE IC7 1 <br /> 5 B226355-MS1 MS EPA-300.0 01/29/26 01/29/2615:45 PRE IC7 1.010 <br /> 6 B226355-MSD1 MSD EPA-300.0 01/29/26 01/29/2616:39 PRE IC7 1.010 <br /> 7 B226452-DUP1 DUP EPA-6010B 01/30/26 01/30/26 20:02 JEH ICP5 1 <br /> 8 B226452-MS1 MS EPA-6010B 01/30/26 01/30/26 20:05 JEH ICP5 1.020 <br /> 9 B226452-MSD1 MSD EPA-6010B 01/30/26 01/30/26 20:07 JEH ICP5 1.020 <br /> 10 B226484-DUP1 DUP EPA-310.1 02/02/26 02/02/2612:26 JMH2 MET-1 2 <br /> 11 B226485-DUP1 DUP EPA-310.1 02/02/26 02/02/2614:33 JMH2 MET-1 1 <br /> 12 B226525-DUP1 DUP EPA-160.1 02/02/26 02/02/2615:23 RLH MANUAL 6.667 <br /> 13 B226526-DUP1 DUP EPA-160.1 02/02/26 02/02/2615:24 RLH MANUAL 2 <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 94 of 98 <br />