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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 />GWTS <br />Ari Terry <br />Reported:01/03/2024 9:27 <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: B180964 Used client sample: Y - Description: EW-1, 12/28/2023 13:59 <br />MSBenzene 24.770 70 - 130ND25.000 99.12323893-01 ug/L 1 <br />MSD 23.910 3.5 20 70 - 130ND25.000 95.62323893-01 ug/L 2 <br />MSBromodichloromethane 24.440 70 - 130ND25.000 97.82323893-01 ug/L 1 <br />MSD 23.930 2.1 20 70 - 130ND25.000 95.72323893-01 ug/L 2 <br />MSChlorobenzene 23.020 70 - 130ND25.000 92.12323893-01 ug/L 1 <br />MSD 22.300 3.2 20 70 - 130ND25.000 89.22323893-01 ug/L 2 <br />MSChloroethane 29.920 70 - 130ND25.000 1202323893-01 ug/L 1 <br />MSD 29.130 2.7 20 70 - 130ND25.000 1172323893-01 ug/L 2 <br />MS1,4-Dichlorobenzene 22.870 70 - 130ND25.000 91.52323893-01 ug/L 1 <br />MSD 22.190 3.0 20 70 - 130ND25.000 88.82323893-01 ug/L 2 <br />MS1,1-Dichloroethane 25.440 70 - 130ND25.000 1022323893-01 ug/L 1 <br />MSD 24.200 5.0 20 70 - 130ND25.000 96.82323893-01 ug/L 2 <br />MS1,1-Dichloroethene 27.120 70 - 130ND25.000 1082323893-01 ug/L 1 <br />MSD 26.280 3.1 20 70 - 130ND25.000 1052323893-01 ug/L 2 <br />MSToluene 24.030 70 - 130ND25.000 96.12323893-01 ug/L 1 <br />MSD 23.290 3.1 20 70 - 130ND25.000 93.22323893-01 ug/L 2 <br />MSTrichloroethene 23.420 70 - 130ND25.000 93.72323893-01 ug/L 1 <br />MSD 22.780 2.8 20 70 - 130ND25.000 91.12323893-01 ug/L 2 <br />MS1,2-Dichloroethane-d4 (Surrogate)10.460 75 - 125ND10.000 1052323893-01 ug/L 1 <br />MSD 10.440 0.2 75 - 125ND10.000 1042323893-01 ug/L 2 <br />MSToluene-d8 (Surrogate)9.9400 80 - 120ND10.000 99.42323893-01 ug/L 1 <br />MSD 9.8800 0.6 80 - 120ND10.000 98.82323893-01 ug/L 2 <br />MS4-Bromofluorobenzene (Surrogate)10.060 80 - 120ND10.000 1012323893-01 ug/L 1 <br />MSD 10.190 1.3 80 - 120ND10.000 1022323893-01 ug/L 2 <br />Run #QC Sample ID QC Type Method Prep Date <br />Run <br />Analyst Instrument DilutionDate Time <br /> 1 B180964-MS1 MS EPA-8260B MGC MS-V5 101/02/24 01/03/24 07:34 <br /> 2 B180964-MSD1 MSD EPA-8260B MGC MS-V5 101/02/24 01/03/24 07:58 <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 25 of 26Report ID: 1001480259