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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 />Drew Feucht <br />Reported:10/23/2023 7:32 <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: B176227 Used client sample: N <br />MSBenzene 21.510 70 - 130ND25.000 86.02319534-07 ug/L 1 <br />MSD 22.560 4.8 20 70 - 130ND25.000 90.22319534-07 ug/L 2 <br />MSBromodichloromethane 22.070 70 - 130ND25.000 88.32319534-07 ug/L 1 <br />MSD 22.250 0.8 20 70 - 130ND25.000 89.02319534-07 ug/L 2 <br />MSChlorobenzene 23.630 70 - 130ND25.000 94.52319534-07 ug/L 1 <br />MSD 24.140 2.1 20 70 - 130ND25.000 96.62319534-07 ug/L 2 <br />MSChloroethane 23.440 70 - 130ND25.000 93.82319534-07 ug/L 1 <br />MSD 24.200 3.2 20 70 - 130ND25.000 96.82319534-07 ug/L 2 <br />MS1,4-Dichlorobenzene 26.170 70 - 130ND25.000 1052319534-07 ug/L 1 <br />MSD 26.480 1.2 20 70 - 130ND25.000 1062319534-07 ug/L 2 <br />MS1,1-Dichloroethane 19.480 70 - 130ND25.000 77.92319534-07 ug/L 1 <br />MSD 20.070 3.0 20 70 - 130ND25.000 80.32319534-07 ug/L 2 <br />MS1,1-Dichloroethene 21.360 70 - 130ND25.000 85.42319534-07 ug/L 1 <br />MSD 23.010 7.4 20 70 - 130ND25.000 92.02319534-07 ug/L 2 <br />MSToluene 22.760 70 - 130ND25.000 91.02319534-07 ug/L 1 <br />MSD 22.960 0.9 20 70 - 130ND25.000 91.82319534-07 ug/L 2 <br />MSTrichloroethene 33.150 70 - 13010.610 25.000 90.22319534-07 ug/L 1 <br />MSD 33.570 1.3 20 70 - 13010.610 25.000 91.82319534-07 ug/L 2 <br />MS1,2-Dichloroethane-d4 (Surrogate)8.5300 75 - 125ND10.000 85.32319534-07 ug/L 1 <br />MSD 8.7200 2.2 75 - 125ND10.000 87.22319534-07 ug/L 2 <br />MSToluene-d8 (Surrogate)9.8300 80 - 120ND10.000 98.32319534-07 ug/L 1 <br />MSD 9.8800 0.5 80 - 120ND10.000 98.82319534-07 ug/L 2 <br />MS4-Bromofluorobenzene (Surrogate)9.3700 80 - 120ND10.000 93.72319534-07 ug/L 1 <br />MSD 9.6500 2.9 80 - 120ND10.000 96.52319534-07 ug/L 2 <br />QC Batch ID: B176418 Used client sample: N <br />MSBenzene 30.170 70 - 130ND25.000 1212319905-01 ug/L 3 <br />MSD 27.840 8.0 20 70 - 130ND25.000 1112319905-01 ug/L 4 <br />MSBromodichloromethane 30.770 70 - 130ND25.000 1232319905-01 ug/L 3 <br />MSD 28.550 7.5 20 70 - 130ND25.000 1142319905-01 ug/L 4 <br />MSChlorobenzene 30.430 70 - 130ND25.000 1222319905-01 ug/L 3 <br />MSD 28.290 7.3 20 70 - 130ND25.000 1132319905-01 ug/L 4 <br />MSChloroethane 27.280 70 - 130ND25.000 1092319905-01 ug/L 3 <br />MSD 24.850 9.3 20 70 - 130ND25.000 99.42319905-01 ug/L 4 <br />MS1,4-Dichlorobenzene 29.910 70 - 130ND25.000 1202319905-01 ug/L 3 <br />MSD 27.900 7.0 20 70 - 130ND25.000 1122319905-01 ug/L 4 <br />MS1,1-Dichloroethane 29.660 70 - 130ND25.000 1192319905-01 ug/L 3 <br />MSD 27.300 8.3 20 70 - 130ND25.000 1092319905-01 ug/L 4 <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 29 of 33Report ID: 1001464621