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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-COELT <br />30216409.01 <br />Ari Terry <br />Reported:12/30/2024 12:12 <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: B202917 Used client sample: N <br />MSBenzene 23.350 70 - 130ND25.000 93.42419440-15 ug/L 1 <br />MSD 23.230 0.5 20 70 - 130ND25.000 92.92419440-15 ug/L 2 <br />MSBromodichloromethane 24.260 70 - 130ND25.000 97.02419440-15 ug/L 1 <br />MSD 24.390 0.5 20 70 - 130ND25.000 97.62419440-15 ug/L 2 <br />MSChlorobenzene 23.830 70 - 130ND25.000 95.32419440-15 ug/L 1 <br />MSD 23.870 0.2 20 70 - 130ND25.000 95.52419440-15 ug/L 2 <br />MSChloroethane 25.630 70 - 130ND25.000 1032419440-15 ug/L 1 <br />MSD 25.760 0.5 20 70 - 130ND25.000 1032419440-15 ug/L 2 <br />MS1,4-Dichlorobenzene 24.110 70 - 130ND25.000 96.42419440-15 ug/L 1 <br />MSD 23.650 1.9 20 70 - 130ND25.000 94.62419440-15 ug/L 2 <br />MS1,1-Dichloroethane 23.660 70 - 130ND25.000 94.62419440-15 ug/L 1 <br />MSD 23.700 0.2 20 70 - 130ND25.000 94.82419440-15 ug/L 2 <br />MS1,1-Dichloroethene 23.370 70 - 130ND25.000 93.52419440-15 ug/L 1 <br />MSD 23.060 1.3 20 70 - 130ND25.000 92.22419440-15 ug/L 2 <br />MSToluene 23.520 70 - 130ND25.000 94.12419440-15 ug/L 1 <br />MSD 23.280 1.0 20 70 - 130ND25.000 93.12419440-15 ug/L 2 <br />MSTrichloroethene 23.060 70 - 130ND25.000 92.22419440-15 ug/L 1 <br />MSD 22.740 1.4 20 70 - 130ND25.000 91.02419440-15 ug/L 2 <br />MS1,2-Dichloroethane-d4 (Surrogate)9.7400 75 - 125ND10.000 97.42419440-15 ug/L 1 <br />MSD 9.8900 1.5 75 - 125ND10.000 98.92419440-15 ug/L 2 <br />MSToluene-d8 (Surrogate)9.9600 80 - 120ND10.000 99.62419440-15 ug/L 1 <br />MSD 9.9900 0.3 80 - 120ND10.000 99.92419440-15 ug/L 2 <br />MS4-Bromofluorobenzene (Surrogate)10.260 80 - 120ND10.000 1032419440-15 ug/L 1 <br />MSD 10.230 0.3 80 - 120ND10.000 1022419440-15 ug/L 2 <br />Run #QC Sample ID QC Type Method Prep Date <br />Run <br />Analyst Instrument DilutionDate Time <br /> 1 B202917-MS1 MS EPA-8260B TDH MS-V20 112/13/24 12/14/24 04:04 <br /> 2 B202917-MSD1 MSD EPA-8260B TDH MS-V20 112/13/24 12/14/24 04:29 <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 24 of 29Report ID: 1001560764