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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:12/11/2024 16:47 <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: B202153 Used client sample: N <br />MS1,1-Dichloroethene 21.840 70 - 130ND25.000 87.42419066-01 ug/L 3 <br />MSD 22.330 2.2 20 70 - 130ND25.000 89.32419066-01 ug/L 4 <br />MSToluene 21.720 70 - 130ND25.000 86.92419066-01 ug/L 3 <br />MSD 21.820 0.5 20 70 - 130ND25.000 87.32419066-01 ug/L 4 <br />MSTrichloroethene 38.910 70 - 13017.190 25.000 86.92419066-01 ug/L 3 <br />MSD 39.040 0.3 20 70 - 13017.190 25.000 87.42419066-01 ug/L 4 <br />MS1,2-Dichloroethane-d4 (Surrogate)10.990 75 - 125ND10.000 1102419066-01 ug/L 3 <br />MSD 11.450 4.1 75 - 125ND10.000 1142419066-01 ug/L 4 <br />MSToluene-d8 (Surrogate)9.9100 80 - 120ND10.000 99.12419066-01 ug/L 3 <br />MSD 9.9600 0.5 80 - 120ND10.000 99.62419066-01 ug/L 4 <br />MS4-Bromofluorobenzene (Surrogate)10.110 80 - 120ND10.000 1012419066-01 ug/L 3 <br />MSD 10.060 0.5 80 - 120ND10.000 1012419066-01 ug/L 4 <br />QC Batch ID: B202256 Used client sample: N <br />MSBenzene 20.870 70 - 130ND25.000 83.52419093-13 ug/L 5 <br />MSD 23.440 11.6 20 70 - 130ND25.000 93.82419093-13 ug/L 6 <br />MSBromodichloromethane 20.500 70 - 130ND25.000 82.02419093-13 ug/L 5 <br />MSD 20.140 1.8 20 70 - 130ND25.000 80.62419093-13 ug/L 6 <br />MSChlorobenzene 23.380 70 - 130ND25.000 93.52419093-13 ug/L 5 <br />MSD 21.260 9.5 20 70 - 130ND25.000 85.02419093-13 ug/L 6 <br />MSChloroethane 24.660 70 - 130ND25.000 98.62419093-13 ug/L 5 <br />MSD 23.980 2.8 20 70 - 130ND25.000 95.92419093-13 ug/L 6 <br />MS1,4-Dichlorobenzene 21.900 70 - 130ND25.000 87.62419093-13 ug/L 5 <br />MSD 28.880 27.5 20 70 - 130ND25.000 1162419093-13 ug/L 6 <br />MS1,1-Dichloroethane 19.250 70 - 130ND25.000 77.02419093-13 ug/L 5 <br />MSD 23.190 18.6 20 70 - 130ND25.000 92.82419093-13 ug/L 6 <br />MS1,1-Dichloroethene 25.450 70 - 130ND25.000 1022419093-13 ug/L 5 <br />MSD 24.580 3.5 20 70 - 130ND25.000 98.32419093-13 ug/L 6 <br />MSToluene 22.130 70 - 130ND25.000 88.52419093-13 ug/L 5 <br />MSD 23.140 4.5 20 70 - 130ND25.000 92.62419093-13 ug/L 6 <br />MSTrichloroethene 21.770 70 - 130ND25.000 87.12419093-13 ug/L 5 <br />MSD 18.810 14.6 20 70 - 130ND25.000 75.22419093-13 ug/L 6 <br />MS1,2-Dichloroethane-d4 (Surrogate)10.830 75 - 125ND10.000 1082419093-13 ug/L 5 <br />MSD 11.410 5.2 75 - 125ND10.000 1142419093-13 ug/L 6 <br />MSToluene-d8 (Surrogate)10.210 80 - 120ND10.000 1022419093-13 ug/L 5 <br />MSD 9.6400 5.7 80 - 120ND10.000 96.42419093-13 ug/L 6 <br />MS4-Bromofluorobenzene (Surrogate)8.3500 80 - 120ND10.000 83.52419093-13 ug/L 5 <br />MSD 9.0300 7.8 80 - 120ND10.000 90.32419093-13 ug/L 6 <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 86 of 95Report ID: 1001557029