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C <br /> ace Analytical <br /> ENVIRONMENTAL SCIENCES <br /> Arcadis-SLO Reported: 04/10/2026 15:35 <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 /> 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: B226962 Used client sample: N <br /> 1,2,3-Trichloropropane DUP 2601914-01 0.068850 0.075450 ug/L 9.1 200 1 <br /> MS 2601914-01 0.068850 0.10635 0.050000 ug/L 75.0 70-130 2 <br /> MSD 2601914-01 0.068850 0.13330 0.050000 ug/L 22.5 129 30 70-130 3 <br /> QC Batch ID: B227014 Used client sample: N <br /> 1,2,3-Trichloropropane DUP 2601914-02 0.030070 0.032390 ug/L 7.4 200 4 <br /> MS 2601914-02 0.030070 0.089470 0.050000 ug/L 119 70-130 5 <br /> MSD 2601914-02 0.030070 0.077350 0.050000 ug/L 14.5 94.6 30 70-130 6 <br /> QC Batch ID: B227521 Used client sample: N <br /> 1,2,3-Trichloropropane DUP 2602040-01 0.12525 0.13197 ug/L 5.2 200 7 <br /> MS 2602040-01 0.12525 0.17240 0.050000 ug/L 94.3 70-130 8 <br /> MSD 2602040-01 0.12525 0.17744 0.050000 ug/L 2.9 104 30 70-130 9 <br /> QC Batch ID: 13227522 Used client sample: N <br /> 1,2,3-Trichloropropane DUP 2602040-02 0.11491 0.11820 ug/L 2.8 200 10 <br /> MS 2602040-02 0.11491 0.16535 0.050000 ug/L 101 70-130 11 <br /> MSD 2602040-02 0.11491 0.17455 0.050000 ug/L 5.4 119 30 70-130 12 <br /> Run <br /> Run# QC Sample ID QC Type Method Prep Date Date Time Analyst Instrument Dilution <br /> 1 B226962-DUP1 DUP SRL 524M 02/10/26 02/11/26 07:32 RCC MS-V16 1 <br /> 2 B226962-MS1 MS SRL 524M 02/10/26 02/11/26 08:27 RCC MS-V16 1 <br /> 3 B226962-MSD1 MSD SRL 524M 02/10/26 02/11/26 08:55 RCC MS-V16 1 <br /> 4 B227014-DUP1 DUP SRL 524M 02/11/26 02/11/26 13:39 RCC MS-V16 1 <br /> 5 B227014-MS1 MS SRL 524M 02/11/26 02/11/26 14:34 RCC MS-V16 1 <br /> 6 B227014-MSD1 MSD SRL 524M 02/11/26 02/11/26 15:02 RCC MS-V16 1 <br /> 7 B227521-DUP1 DUP SRL 524M 02/19/26 02/19/26 13:33 RCC MS-V16 1 <br /> 8 B227521-MS1 MS SRL 524M 02/19/26 02/19/26 14:27 RCC MS-V16 1 <br /> 9 B227521-MSD1 MSD SRL 524M 02/19/26 02/19/26 14:55 RCC MS-V16 1 <br /> 10 B227522-DUP1 DUP SRL 524M 02/19/26 02/19/26 19:26 RCC MS-V16 1 <br /> 11 B227522-MS1 MS SRL 524M 02/19/26 02/19/26 20:21 RCC MS-V16 1 <br /> 12 B227522-MSD1 MSD SRL 524M 02/19/26 02/19/26 20:48 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: 1001665034 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.pacelabs.com Page 123 of 147 <br />