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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 />4Q24 Austin Unit <br />Ari Terry <br />Reported:11/27/2024 15:53 <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: B201469 <br />Benzene B201469-BS1 LCS 26.340 25.000 105 70 - 130ug/L 1 <br />Bromodichloromethane B201469-BS1 LCS 25.700 25.000 103 70 - 130ug/L 1 <br />Chlorobenzene B201469-BS1 LCS 25.510 25.000 102 70 - 130ug/L 1 <br />Chloroethane B201469-BS1 LCS 26.550 25.000 106 70 - 130ug/L 1 <br />1,4-Dichlorobenzene B201469-BS1 LCS 25.980 25.000 104 70 - 130ug/L 1 <br />1,1-Dichloroethane B201469-BS1 LCS 28.390 25.000 114 70 - 130ug/L 1 <br />1,1-Dichloroethene B201469-BS1 LCS 28.110 25.000 112 70 - 130ug/L 1 <br />Toluene B201469-BS1 LCS 24.010 25.000 96.0 70 - 130ug/L 1 <br />Trichloroethene B201469-BS1 LCS 24.700 25.000 98.8 70 - 130ug/L 1 <br />1,2-Dichloroethane-d4 (Surrogate)B201469-BS1 LCS 10.740 10.000 107 75 - 125ug/L 1 <br />Toluene-d8 (Surrogate)B201469-BS1 LCS 9.5200 10.000 95.2 80 - 120ug/L 1 <br />4-Bromofluorobenzene (Surrogate)B201469-BS1 LCS 10.690 10.000 107 80 - 120ug/L 1 <br />QC Batch ID: B201470 <br />Benzene B201470-BS1 LCS 23.660 25.000 94.6 70 - 130ug/L 2 <br />Bromodichloromethane B201470-BS1 LCS 24.880 25.000 99.5 70 - 130ug/L 2 <br />Chlorobenzene B201470-BS1 LCS 23.680 25.000 94.7 70 - 130ug/L 2 <br />Chloroethane B201470-BS1 LCS 23.620 25.000 94.5 70 - 130ug/L 2 <br />1,4-Dichlorobenzene B201470-BS1 LCS 23.700 25.000 94.8 70 - 130ug/L 2 <br />1,1-Dichloroethane B201470-BS1 LCS 25.110 25.000 100 70 - 130ug/L 2 <br />1,1-Dichloroethene B201470-BS1 LCS 24.300 25.000 97.2 70 - 130ug/L 2 <br />Toluene B201470-BS1 LCS 23.400 25.000 93.6 70 - 130ug/L 2 <br />Trichloroethene B201470-BS1 LCS 24.440 25.000 97.8 70 - 130ug/L 2 <br />1,2-Dichloroethane-d4 (Surrogate)B201470-BS1 LCS 10.240 10.000 102 75 - 125ug/L 2 <br />Toluene-d8 (Surrogate)B201470-BS1 LCS 10.120 10.000 101 80 - 120ug/L 2 <br />4-Bromofluorobenzene (Surrogate)B201470-BS1 LCS 10.330 10.000 103 80 - 120ug/L 2 <br />Run #QC Sample ID QC Type Method Prep Date <br />Run <br />Analyst Instrument DilutionDate Time <br /> 1 B201469-BS1 LCS EPA-8260B MGC MS-V5 111/20/24 11/21/24 15:33 <br /> 2 B201470-BS1 LCS EPA-8260B MGC MS-V5 111/21/24 11/22/24 03:31 <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 113 of 123Report ID: 1001554248