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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 />Forward Landfill 4Q24 Austin Unit <br />Ari Terry <br />Reported:12/18/2024 14:06 <br />Quality Control Report - Laboratory Control Sample <br />Constituent <br />Control Limits <br />PercentPercentSpike <br />QC Sample ID Type Result Level Units Recovery RPD Recovery RPD Quals <br />Volatile Organic Analysis (EPA Method 8260B) <br />Run # <br />Lab <br />QC Batch ID: B202839 <br />Benzene B202839-BS1 LCS 24.060 25.000 96.2 70 - 130ug/L 1 <br />Bromodichloromethane B202839-BS1 LCS 24.470 25.000 97.9 70 - 130ug/L 1 <br />Chlorobenzene B202839-BS1 LCS 25.080 25.000 100 70 - 130ug/L 1 <br />Chloroethane B202839-BS1 LCS 27.130 25.000 109 70 - 130ug/L 1 <br />1,4-Dichlorobenzene B202839-BS1 LCS 23.900 25.000 95.6 70 - 130ug/L 1 <br />1,1-Dichloroethane B202839-BS1 LCS 24.480 25.000 97.9 70 - 130ug/L 1 <br />1,1-Dichloroethene B202839-BS1 LCS 25.240 25.000 101 70 - 130ug/L 1 <br />Toluene B202839-BS1 LCS 24.760 25.000 99.0 70 - 130ug/L 1 <br />Trichloroethene B202839-BS1 LCS 24.630 25.000 98.5 70 - 130ug/L 1 <br />1,2-Dichloroethane-d4 (Surrogate)B202839-BS1 LCS 9.6100 10.000 96.1 75 - 125ug/L 1 <br />Toluene-d8 (Surrogate)B202839-BS1 LCS 9.9400 10.000 99.4 80 - 120ug/L 1 <br />4-Bromofluorobenzene (Surrogate)B202839-BS1 LCS 9.8800 10.000 98.8 80 - 120ug/L 1 <br />Run #QC Sample ID QC Type Method Prep Date <br />Run <br />Analyst Instrument DilutionDate Time <br /> 1 B202839-BS1 LCS EPA-8260B TDH MS-V20 112/12/24 12/12/24 15:03 <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 34 of 44Report ID: 1001558598