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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 />4Q23 Forward Unit <br />Drew Feucht <br />Reported:12/14/2023 18:58 <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: B178816 Used client sample: N <br />MSBenzene 25.500 70 - 130ND25.000 1022321918-01 ug/L 1 <br />MSD 26.690 4.6 20 70 - 130ND25.000 1072321918-01 ug/L 2 <br />MSBromodichloromethane 24.830 70 - 130ND25.000 99.32321918-01 ug/L 1 <br />MSD 26.460 6.4 20 70 - 130ND25.000 1062321918-01 ug/L 2 <br />MSChlorobenzene 25.170 70 - 130ND25.000 1012321918-01 ug/L 1 <br />MSD 26.530 5.3 20 70 - 130ND25.000 1062321918-01 ug/L 2 <br />MSChloroethane 26.200 70 - 130ND25.000 1052321918-01 ug/L 1 <br />MSD 27.300 4.1 20 70 - 130ND25.000 1092321918-01 ug/L 2 <br />MS1,4-Dichlorobenzene 27.350 70 - 130ND25.000 1092321918-01 ug/L 1 <br />MSD 28.240 3.2 20 70 - 130ND25.000 1132321918-01 ug/L 2 <br />MS1,1-Dichloroethane 24.610 70 - 130ND25.000 98.42321918-01 ug/L 1 <br />MSD 25.740 4.5 20 70 - 130ND25.000 1032321918-01 ug/L 2 <br />MS1,1-Dichloroethene 27.850 70 - 130ND25.000 1112321918-01 ug/L 1 <br />MSD 29.140 4.5 20 70 - 130ND25.000 1172321918-01 ug/L 2 <br />MSToluene 24.260 70 - 130ND25.000 97.02321918-01 ug/L 1 <br />MSD 25.400 4.6 20 70 - 130ND25.000 1022321918-01 ug/L 2 <br />MSTrichloroethene 24.200 70 - 130ND25.000 96.82321918-01 ug/L 1 <br />MSD 25.670 5.9 20 70 - 130ND25.000 1032321918-01 ug/L 2 <br />MS1,2-Dichloroethane-d4 (Surrogate)9.5500 75 - 125ND10.000 95.52321918-01 ug/L 1 <br />MSD 9.9700 4.3 75 - 125ND10.000 99.72321918-01 ug/L 2 <br />MSToluene-d8 (Surrogate)10.090 80 - 120ND10.000 1012321918-01 ug/L 1 <br />MSD 10.180 0.9 80 - 120ND10.000 1022321918-01 ug/L 2 <br />MS4-Bromofluorobenzene (Surrogate)9.9200 80 - 120ND10.000 99.22321918-01 ug/L 1 <br />MSD 9.9800 0.6 80 - 120ND10.000 99.82321918-01 ug/L 2 <br />Run #QC Sample ID QC Type Method Prep Date <br />Run <br />Analyst Instrument DilutionDate Time <br /> 1 B178816-MS1 MS EPA-8260B RCC MSV-21 111/21/23 11/21/23 19:33 <br /> 2 B178816-MSD1 MSD EPA-8260B RCC MSV-21 111/21/23 11/21/23 19:53 <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 15 of 36Report ID: 1001476303