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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:01/02/2024 9:44 <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: B180912 Used client sample: Y - Description: G.A.C. #2 EFFLUENT lead, 12/28/2023 14:56 <br />MSBenzene 22.470 70 - 130ND25.000 89.92323892-03 ug/L 1 <br />MSD 20.060 11.3 20 70 - 130ND25.000 80.22323892-03 ug/L 2 <br />MSBromodichloromethane 22.510 70 - 130ND25.000 90.02323892-03 ug/L 1 <br />MSD 21.010 6.9 20 70 - 130ND25.000 84.02323892-03 ug/L 2 <br />MSChlorobenzene 22.080 70 - 130ND25.000 88.32323892-03 ug/L 1 <br />MSD 21.240 3.9 20 70 - 130ND25.000 85.02323892-03 ug/L 2 <br />MSChloroethane 27.860 70 - 130ND25.000 1112323892-03 ug/L 1 <br />MSD 25.100 10.4 20 70 - 130ND25.000 1002323892-03 ug/L 2 <br />MS1,4-Dichlorobenzene 21.830 70 - 130ND25.000 87.32323892-03 ug/L 1 <br />MSD 20.520 6.2 20 70 - 130ND25.000 82.12323892-03 ug/L 2 <br />MS1,1-Dichloroethane 22.910 70 - 130ND25.000 91.62323892-03 ug/L 1 <br />MSD 20.020 13.5 20 70 - 130ND25.000 80.12323892-03 ug/L 2 <br />MS1,1-Dichloroethene 25.250 70 - 130ND25.000 1012323892-03 ug/L 1 <br />MSD 22.920 9.7 20 70 - 130ND25.000 91.72323892-03 ug/L 2 <br />MSToluene 21.770 70 - 130ND25.000 87.12323892-03 ug/L 1 <br />MSD 20.630 5.4 20 70 - 130ND25.000 82.52323892-03 ug/L 2 <br />MSTrichloroethene 21.380 70 - 130ND25.000 85.52323892-03 ug/L 1 <br />MSD 20.120 6.1 20 70 - 130ND25.000 80.52323892-03 ug/L 2 <br />MS1,2-Dichloroethane-d4 (Surrogate)10.820 75 - 125ND10.000 1082323892-03 ug/L 1 <br />MSD 9.3200 14.9 75 - 125ND10.000 93.22323892-03 ug/L 2 <br />MSToluene-d8 (Surrogate)9.7700 80 - 120ND10.000 97.72323892-03 ug/L 1 <br />MSD 9.8000 0.3 80 - 120ND10.000 98.02323892-03 ug/L 2 <br />MS4-Bromofluorobenzene (Surrogate)10.050 80 - 120ND10.000 1002323892-03 ug/L 1 <br />MSD 10.200 1.5 80 - 120ND10.000 1022323892-03 ug/L 2 <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 22 of 24Report ID: 1001479976