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C <br /> ace Analytical <br /> ENVIRONMENTAL SCIENCES <br /> Arcadis-SLO Reported: 04/13/2026 13:59 <br /> 4119 Broad Street Suite 210 Project: Forward Landfill-COELT <br /> San Luis Obispo,CA 93401 Project Number: 30274343.01 Forward Landfill <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: B226551 Used client sample: N <br /> 1,2,3-Trichloropropane DUP 2601594-03 ND ND ug/L 200 1 <br /> MS 2601594-03 ND 0.056240 0.050000 ug/L 112 70-130 2 <br /> MSD 2601594-03 ND 0.054090 0.050000 ug/L 3.9 108 30 70-130 3 <br /> QC Batch ID: B226619 Used client sample: N <br /> 1,2,3-Trichloropropane DUP 2601685-01 0.013470 0.011390 ug/L 16.7 200 4 <br /> MS 2601685-01 0.013470 0.066430 0.050000 ug/L 106 70-130 5 <br /> MSD 2601685-01 0.013470 0.062640 0.050000 ug/L 5.9 98.3 30 70-130 6 <br /> Run <br /> Run# QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br /> 1 B226551-DUP1 DUP SRL 524M 02/03/26 02/04/26 22:17 RCC MS-V16 1 <br /> 2 B226551-MS1 MS SRL 524M 02/03/26 02/04/26 23:12 RCC MS-V16 1 <br /> 3 B226551-MSD1 MSD SRL 524M 02/03/26 02/04/26 23:40 RCC MS-V16 1 <br /> 4 B226619-DUP1 DUP SRL 524M 02/04/26 02/05/26 04:15 RCC MS-V16 1 <br /> 5 B226619-MS1 MS SRL 524M 02/04/26 02/05/26 05:10 RCC MS-V16 1 <br /> 6 B226619-MSD1 MSD SRL 524M 02/04/26 02/05/26 05:37 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: 1001665505 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 74 of 87 <br />