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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 GWTS <br />Drew Feucht <br />Reported:11/13/2023 12:32 <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: B178195 Used client sample: N <br />MSBenzene 23.850 70 - 130ND25.000 95.42321179-01 ug/L 1 <br />MSD 23.940 0.4 20 70 - 130ND25.000 95.82321179-01 ug/L 2 <br />MSBromodichloromethane 26.160 70 - 130ND25.000 1052321179-01 ug/L 1 <br />MSD 26.300 0.5 20 70 - 130ND25.000 1052321179-01 ug/L 2 <br />MSChlorobenzene 24.000 70 - 130ND25.000 96.02321179-01 ug/L 1 <br />MSD 24.470 1.9 20 70 - 130ND25.000 97.92321179-01 ug/L 2 <br />MSChloroethane 28.820 70 - 130ND25.000 1152321179-01 ug/L 1 <br />MSD 29.020 0.7 20 70 - 130ND25.000 1162321179-01 ug/L 2 <br />MS1,4-Dichlorobenzene 25.340 70 - 130ND25.000 1012321179-01 ug/L 1 <br />MSD 26.840 5.7 20 70 - 130ND25.000 1072321179-01 ug/L 2 <br />MS1,1-Dichloroethane 23.550 70 - 130ND25.000 94.22321179-01 ug/L 1 <br />MSD 23.920 1.6 20 70 - 130ND25.000 95.72321179-01 ug/L 2 <br />MS1,1-Dichloroethene 23.790 70 - 130ND25.000 95.22321179-01 ug/L 1 <br />MSD 23.410 1.6 20 70 - 130ND25.000 93.62321179-01 ug/L 2 <br />MSToluene 23.800 70 - 130ND25.000 95.22321179-01 ug/L 1 <br />MSD 24.390 2.4 20 70 - 130ND25.000 97.62321179-01 ug/L 2 <br />MSTrichloroethene 24.210 70 - 130ND25.000 96.82321179-01 ug/L 1 <br />MSD 24.440 0.9 20 70 - 130ND25.000 97.82321179-01 ug/L 2 <br />MS1,2-Dichloroethane-d4 (Surrogate)10.110 75 - 125ND10.000 1012321179-01 ug/L 1 <br />MSD 9.9200 1.9 75 - 125ND10.000 99.22321179-01 ug/L 2 <br />MSToluene-d8 (Surrogate)10.140 80 - 120ND10.000 1012321179-01 ug/L 1 <br />MSD 10.060 0.8 80 - 120ND10.000 1012321179-01 ug/L 2 <br />MS4-Bromofluorobenzene (Surrogate)9.9000 80 - 120ND10.000 99.02321179-01 ug/L 1 <br />MSD 9.9000 0 80 - 120ND10.000 99.02321179-01 ug/L 2 <br />Run #QC Sample ID QC Type Method Prep Date <br />Run <br />Analyst Instrument DilutionDate Time <br /> 1 B178195-MS1 MS EPA-8260B MGC MS-V5 111/12/23 11/12/23 10:29 <br /> 2 B178195-MSD1 MSD EPA-8260B MGC MS-V5 111/12/23 11/12/23 10:53 <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: 1001469648