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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 Landfill - Austin Unit 3Q2023 <br />Drew Feucht <br />Reported:08/28/2023 17:40 <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: B172081 Used client sample: N <br />MS1,1-Dichloroethene 26.970 70 - 130ND25.000 1082315652-01 ug/L 3 <br />MSD 28.430 5.3 20 70 - 130ND25.000 1142315652-01 ug/L 4 <br />MSToluene 25.010 70 - 130ND25.000 1002315652-01 ug/L 3 <br />MSD 25.980 3.8 20 70 - 130ND25.000 1042315652-01 ug/L 4 <br />MSTrichloroethene 24.840 70 - 130ND25.000 99.42315652-01 ug/L 3 <br />MSD 26.340 5.9 20 70 - 130ND25.000 1052315652-01 ug/L 4 <br />MS1,2-Dichloroethane-d4 (Surrogate)9.9600 75 - 125ND10.000 99.62315652-01 ug/L 3 <br />MSD 9.8200 1.4 75 - 125ND10.000 98.22315652-01 ug/L 4 <br />MSToluene-d8 (Surrogate)10.220 80 - 120ND10.000 1022315652-01 ug/L 3 <br />MSD 10.050 1.7 80 - 120ND10.000 1002315652-01 ug/L 4 <br />MS4-Bromofluorobenzene (Surrogate)9.8500 80 - 120ND10.000 98.52315652-01 ug/L 3 <br />MSD 9.8100 0.4 80 - 120ND10.000 98.12315652-01 ug/L 4 <br />Run #QC Sample ID QC Type Method Prep Date <br />Run <br />Analyst Instrument DilutionDate Time <br /> 1 B171638-MS1 MS EPA-8260B ADC MS-V15 108/11/23 08/14/23 21:37 <br /> 2 B171638-MSD1 MSD EPA-8260B ADC MS-V15 108/11/23 08/14/23 22:01 <br /> 3 B172081-MS1 MS EPA-8260B ADC MS-V15 108/16/23 08/16/23 10:40 <br /> 4 B172081-MSD1 MSD EPA-8260B ADC MS-V15 108/16/23 08/16/23 11:04 <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 52 of 60Report ID: 1001452308