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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 />Forward Landfill-Forward GWTS <br />Drew Feucht <br />Reported:07/17/2023 8:32 <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: B169832 Used client sample: N <br />MSBenzene 22.370 70 - 130ND25.000 89.52313366-01 ug/L 1 <br />MSD 23.750 6.0 20 70 - 130ND25.000 95.02313366-01 ug/L 2 <br />MSBromodichloromethane 25.250 70 - 1300.15000 25.000 1002313366-01 ug/L 1 <br />MSD 26.620 5.3 20 70 - 1300.15000 25.000 1062313366-01 ug/L 2 <br />MSChlorobenzene 23.840 70 - 130ND25.000 95.42313366-01 ug/L 1 <br />MSD 25.240 5.7 20 70 - 130ND25.000 1012313366-01 ug/L 2 <br />MSChloroethane 22.840 70 - 130ND25.000 91.42313366-01 ug/L 1 <br />MSD 23.840 4.3 20 70 - 130ND25.000 95.42313366-01 ug/L 2 <br />MS1,4-Dichlorobenzene 23.670 70 - 130ND25.000 94.72313366-01 ug/L 1 <br />MSD 24.430 3.2 20 70 - 130ND25.000 97.72313366-01 ug/L 2 <br />MS1,1-Dichloroethane 22.470 70 - 130ND25.000 89.92313366-01 ug/L 1 <br />MSD 23.680 5.2 20 70 - 130ND25.000 94.72313366-01 ug/L 2 <br />MS1,1-Dichloroethene 23.770 70 - 130ND25.000 95.12313366-01 ug/L 1 <br />MSD 25.010 5.1 20 70 - 130ND25.000 1002313366-01 ug/L 2 <br />MSToluene 23.540 70 - 130ND25.000 94.22313366-01 ug/L 1 <br />MSD 25.040 6.2 20 70 - 130ND25.000 1002313366-01 ug/L 2 <br />MSTrichloroethene 23.100 70 - 130ND25.000 92.42313366-01 ug/L 1 <br />MSD 24.620 6.4 20 70 - 130ND25.000 98.52313366-01 ug/L 2 <br />MS1,2-Dichloroethane-d4 (Surrogate)10.600 75 - 125ND10.000 1062313366-01 ug/L 1 <br />MSD 10.270 3.2 75 - 125ND10.000 1032313366-01 ug/L 2 <br />MSToluene-d8 (Surrogate)10.050 80 - 120ND10.000 1002313366-01 ug/L 1 <br />MSD 10.040 0.1 80 - 120ND10.000 1002313366-01 ug/L 2 <br />MS4-Bromofluorobenzene (Surrogate)10.560 80 - 120ND10.000 1062313366-01 ug/L 1 <br />MSD 10.450 1.0 80 - 120ND10.000 1042313366-01 ug/L 2 <br />Run #QC Sample ID QC Type Method Prep Date <br />Run <br />Analyst Instrument DilutionDate Time <br /> 1 B169832-MS1 MS EPA-8260B TDH MS-V20 107/13/23 07/14/23 02:22 <br /> 2 B169832-MSD1 MSD EPA-8260B TDH MS-V20 107/13/23 07/14/23 02:47 <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: 1001440110