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Arcadis- SLO <br />735 Tank Farm Rd, Suite 150 <br />San Luis Obispo, CA 93401 <br />Project: <br />Project Number: <br />Project Manager: <br />Forward Landfill <br />30110749 <br />Drew Feucht <br />Reported:07/11/2023 10:34 <br />Quality Control Report - Precision & Accuracy <br />Constituent Sample IDType Result Result Added Units RPD Recovery RPD Recovery Quals <br />Source Spike Percent Percent <br />Control Limits <br />Volatile Organic Analysis (EPA Method 8260B) <br />Source Lab <br />R# <br />QC Batch ID: B169412 Used client sample: N <br />MSBenzene 21.280 70 - 130ND25.000 85.12312998-03 ug/L 1 <br />MSD 20.800 2.3 20 70 - 130ND25.000 83.22312998-03 ug/L 2 <br />MSBromodichloromethane 21.220 70 - 130ND25.000 84.92312998-03 ug/L 1 <br />MSD 21.020 0.9 20 70 - 130ND25.000 84.12312998-03 ug/L 2 <br />MSChlorobenzene 22.300 70 - 130ND25.000 89.22312998-03 ug/L 1 <br />MSD 22.490 0.8 20 70 - 130ND25.000 90.02312998-03 ug/L 2 <br />MSChloroethane 25.120 70 - 130ND25.000 1002312998-03 ug/L 1 <br />MSD 24.360 3.1 20 70 - 130ND25.000 97.42312998-03 ug/L 2 <br />MS1,4-Dichlorobenzene 24.630 70 - 130ND25.000 98.52312998-03 ug/L 1 <br />MSD 25.480 3.4 20 70 - 130ND25.000 1022312998-03 ug/L 2 <br />MS1,1-Dichloroethane 22.260 70 - 130ND25.000 89.02312998-03 ug/L 1 <br />MSD 21.720 2.5 20 70 - 130ND25.000 86.92312998-03 ug/L 2 <br />MS1,1-Dichloroethene 22.730 70 - 130ND25.000 90.92312998-03 ug/L 1 <br />MSD 22.200 2.4 20 70 - 130ND25.000 88.82312998-03 ug/L 2 <br />MSToluene 21.090 70 - 130ND25.000 84.42312998-03 ug/L 1 <br />MSD 21.220 0.6 20 70 - 130ND25.000 84.92312998-03 ug/L 2 <br />MSTrichloroethene 22.320 70 - 130ND25.000 89.32312998-03 ug/L 1 <br />MSD 22.750 1.9 20 70 - 130ND25.000 91.02312998-03 ug/L 2 <br />MS1,2-Dichloroethane-d4 (Surrogate)9.2400 75 - 125ND10.000 92.42312998-03 ug/L 1 <br />MSD 8.8600 4.2 75 - 125ND10.000 88.62312998-03 ug/L 2 <br />MSToluene-d8 (Surrogate)9.7500 80 - 120ND10.000 97.52312998-03 ug/L 1 <br />MSD 9.7700 0.2 80 - 120ND10.000 97.72312998-03 ug/L 2 <br />MS4-Bromofluorobenzene (Surrogate)9.9200 80 - 120ND10.000 99.22312998-03 ug/L 1 <br />MSD 9.9000 0.2 80 - 120ND10.000 99.02312998-03 ug/L 2 <br />Run #QC Sample ID QC Type Method Prep Date <br />Run <br />Analyst Instrument DilutionDate Time <br /> 1 B169412-MS1 MS EPA-8260B MGC MS-V5 107/10/23 07/11/23 05:27 <br /> 2 B169412-MSD1 MSD EPA-8260B MGC MS-V5 107/10/23 07/11/23 05:52 <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 />4100 Atlas Court Bakersfield, CA 93308 (661) 327-4911 FAX (661) 327-1918 www.pacelabs.com Page 22 of 23Report ID: 1001438912