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C <br /> ace Analytical <br /> ENVIRONMENTAL SCIENCES <br /> Arcadis-SLO Reported: 02/20/2026 12:29 <br /> 4119 Broad Street Suite 210 Project: Forward Landfill-COELT <br /> San Luis Obispo,CA 93401 Project Number: 30274343.01 1Q26 Groundwater Monitoring Wells <br /> Project Manager: Dalia Rumani <br /> DHS Low Level 1,2,3-TCP by SRL 524M <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: B226857 Used client sample: N <br /> 1,2,3-Trichloropropane DUP 2601902-01 ND ND ug/L 200 1 <br /> MS 2601902-01 ND 0.049820 0.050000 ug/L 99.6 70-130 2 <br /> MSD 2601902-01 ND 0.056420 0.050000 ug/L 12.4 113 30 70-130 3 <br /> QC Batch ID: B226961 Used client sample: N <br /> 1,2,3-Trichloropropane DUP 2601903-01 ND ND ug/L 200 4 <br /> MS 2601903-01 ND 0.056880 0.050000 ug/L 114 70-130 5 <br /> MSD 2601903-01 ND 0.051930 0.050000 ug/L 9.1 104 30 70-130 6 <br /> Run <br /> Run# QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br /> 1 B226857-DUP1 DUP SRL 524M 02/10/26 02/10/26 13:38 RCC MS-V16 1 <br /> 2 B226857-MS1 MS SRL 524M 02/10/26 02/10/26 14:33 RCC MS-V16 1 <br /> 3 B226857-MSD1 MSD SRL 524M 02/10/26 02/10/26 15:00 RCC MS-V16 1 <br /> 4 B226961-DUP1 DUP SRL 524M 02/10/26 02/11/26 01:34 RCC MS-V16 1 <br /> 5 B226961-MS1 MS SRL 524M 02/10/26 02/11/26 02:29 RCC MS-V16 1 <br /> 6 B226961-MSD1 MSD SRL 524M 02/10/26 02/11/26 02:56 RCC MS-V16 1 <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: 1001655038 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 22 of 34 <br />