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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 GWTS <br />Ari Terry <br />Reported:12/08/2023 17:09 <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: B179133 Used client sample: N <br />MSBenzene 24.620 70 - 130ND25.000 98.52322192-01 ug/L 1 <br />MSD 24.750 0.5 20 70 - 130ND25.000 99.02322192-01 ug/L 2 <br />MSBromodichloromethane 26.490 70 - 130ND25.000 1062322192-01 ug/L 1 <br />MSD 26.590 0.4 20 70 - 130ND25.000 1062322192-01 ug/L 2 <br />MSChlorobenzene 25.170 70 - 130ND25.000 1012322192-01 ug/L 1 <br />MSD 25.050 0.5 20 70 - 130ND25.000 1002322192-01 ug/L 2 <br />MSChloroethane 25.680 70 - 130ND25.000 1032322192-01 ug/L 1 <br />MSD 25.630 0.2 20 70 - 130ND25.000 1032322192-01 ug/L 2 <br />MS1,4-Dichlorobenzene 26.130 70 - 130ND25.000 1052322192-01 ug/L 1 <br />MSD 25.750 1.5 20 70 - 130ND25.000 1032322192-01 ug/L 2 <br />MS1,1-Dichloroethane 25.570 70 - 130ND25.000 1022322192-01 ug/L 1 <br />MSD 25.450 0.5 20 70 - 130ND25.000 1022322192-01 ug/L 2 <br />MS1,1-Dichloroethene 26.490 70 - 130ND25.000 1062322192-01 ug/L 1 <br />MSD 26.310 0.7 20 70 - 130ND25.000 1052322192-01 ug/L 2 <br />MSToluene 24.170 70 - 130ND25.000 96.72322192-01 ug/L 1 <br />MSD 24.100 0.3 20 70 - 130ND25.000 96.42322192-01 ug/L 2 <br />MSTrichloroethene 24.730 70 - 130ND25.000 98.92322192-01 ug/L 1 <br />MSD 24.600 0.5 20 70 - 130ND25.000 98.42322192-01 ug/L 2 <br />MS1,2-Dichloroethane-d4 (Surrogate)10.770 75 - 125ND10.000 1082322192-01 ug/L 1 <br />MSD 10.440 3.1 75 - 125ND10.000 1042322192-01 ug/L 2 <br />MSToluene-d8 (Surrogate)9.9700 80 - 120ND10.000 99.72322192-01 ug/L 1 <br />MSD 10.040 0.7 80 - 120ND10.000 1002322192-01 ug/L 2 <br />MS4-Bromofluorobenzene (Surrogate)10.500 80 - 120ND10.000 1052322192-01 ug/L 1 <br />MSD 10.190 3.0 80 - 120ND10.000 1022322192-01 ug/L 2 <br />Run #QC Sample ID QC Type Method Prep Date <br />Run <br />Analyst Instrument DilutionDate Time <br /> 1 B179133-MS1 MS EPA-8260B RCC MSV-21 111/29/23 11/30/23 05:27 <br /> 2 B179133-MSD1 MSD EPA-8260B RCC MSV-21 111/29/23 11/30/23 05:48 <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 19 of 20Report ID: 1001474652