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Arcadis- SLO <br />4119 Broad Street Suite 210 <br />San Luis Obispo, CA 93401 <br />Project: <br />Project Number: <br />Project Manager: <br />Forward Landfill <br />Forward Landfill-Forward GWTS <br />Drew Feucht <br />Reported:08/11/2023 15:12 <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: B171553 Used client sample: N <br />MSBenzene 22.400 70 - 130ND25.000 89.62314864-08 ug/L 1 <br />MSD 22.150 1.1 20 70 - 130ND25.000 88.62314864-08 ug/L 2 <br />MSBromodichloromethane 24.090 70 - 130ND25.000 96.42314864-08 ug/L 1 <br />MSD 24.000 0.4 20 70 - 130ND25.000 96.02314864-08 ug/L 2 <br />MSChlorobenzene 23.990 70 - 130ND25.000 96.02314864-08 ug/L 1 <br />MSD 23.960 0.1 20 70 - 130ND25.000 95.82314864-08 ug/L 2 <br />MSChloroethane 21.910 70 - 130ND25.000 87.62314864-08 ug/L 1 <br />MSD 21.320 2.7 20 70 - 130ND25.000 85.32314864-08 ug/L 2 <br />MS1,4-Dichlorobenzene 24.330 70 - 130ND25.000 97.32314864-08 ug/L 1 <br />MSD 23.870 1.9 20 70 - 130ND25.000 95.52314864-08 ug/L 2 <br />MS1,1-Dichloroethane 22.220 70 - 130ND25.000 88.92314864-08 ug/L 1 <br />MSD 22.010 0.9 20 70 - 130ND25.000 88.02314864-08 ug/L 2 <br />MS1,1-Dichloroethene 23.080 70 - 130ND25.000 92.32314864-08 ug/L 1 <br />MSD 22.860 1.0 20 70 - 130ND25.000 91.42314864-08 ug/L 2 <br />MSToluene 23.530 70 - 130ND25.000 94.12314864-08 ug/L 1 <br />MSD 23.350 0.8 20 70 - 130ND25.000 93.42314864-08 ug/L 2 <br />MSTrichloroethene 23.500 70 - 130ND25.000 94.02314864-08 ug/L 1 <br />MSD 23.500 0 20 70 - 130ND25.000 94.02314864-08 ug/L 2 <br />MS1,2-Dichloroethane-d4 (Surrogate)9.4000 75 - 125ND10.000 94.02314864-08 ug/L 1 <br />MSD 9.4200 0.2 75 - 125ND10.000 94.22314864-08 ug/L 2 <br />MSToluene-d8 (Surrogate)9.9800 80 - 120ND10.000 99.82314864-08 ug/L 1 <br />MSD 9.9900 0.1 80 - 120ND10.000 99.92314864-08 ug/L 2 <br />MS4-Bromofluorobenzene (Surrogate)10.180 80 - 120ND10.000 1022314864-08 ug/L 1 <br />MSD 10.100 0.8 80 - 120ND10.000 1012314864-08 ug/L 2 <br />Run #QC Sample ID QC Type Method Prep Date <br />Run <br />Analyst Instrument DilutionDate Time <br /> 1 B171553-MS1 MS EPA-8260B TDH MS-V20 108/09/23 08/10/23 02:33 <br /> 2 B171553-MSD1 MSD EPA-8260B TDH MS-V20 108/09/23 08/10/23 02:58 <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 19 of 20Report ID: 1001447794