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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 />CHCF- Forward Landfill <br />Elena Strom <br />Reported:06/05/2024 12:10 <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: B190727 Used client sample: N <br />MS1,1-Dichloroethene 29.590 70 - 130ND25.000 1182408869-01 ug/L 3 <br />MSD 27.770 6.3 20 70 - 130ND25.000 1112408869-01 ug/L 4 <br />MSToluene 29.410 70 - 130ND25.000 1182408869-01 ug/L 3 <br />MSD 26.960 8.7 20 70 - 130ND25.000 1082408869-01 ug/L 4 <br />MSTrichloroethene 29.700 70 - 130ND25.000 1192408869-01 ug/L 3 <br />MSD 27.140 9.0 20 70 - 130ND25.000 1092408869-01 ug/L 4 <br />MS1,2-Dichloroethane-d4 (Surrogate)10.260 75 - 125ND10.000 1032408869-01 ug/L 3 <br />MSD 10.140 1.2 75 - 125ND10.000 1012408869-01 ug/L 4 <br />MSToluene-d8 (Surrogate)10.060 80 - 120ND10.000 1012408869-01 ug/L 3 <br />MSD 9.9900 0.7 80 - 120ND10.000 99.92408869-01 ug/L 4 <br />MS4-Bromofluorobenzene (Surrogate)10.410 80 - 120ND10.000 1042408869-01 ug/L 3 <br />MSD 10.300 1.1 80 - 120ND10.000 1032408869-01 ug/L 4 <br />Run #QC Sample ID QC Type Method Prep Date <br />Run <br />Analyst Instrument DilutionDate Time <br /> 1 B190638-MS1 MS EPA-8260B MGC MS-V5 106/03/24 06/03/24 11:19 <br /> 2 B190638-MSD1 MSD EPA-8260B MGC MS-V5 106/03/24 06/03/24 11:43 <br /> 3 B190727-MS1 MS EPA-8260B TDH MS-V20 106/04/24 06/04/24 14:19 <br /> 4 B190727-MSD1 MSD EPA-8260B TDH MS-V20 106/04/24 06/04/24 14:44 <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 38 of 39Report ID: 1001514400