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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 />1Q24 Austin Unit 30167676.01 <br />Ari Terry <br />Reported:02/14/2024 12:14 <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: B183707 <br />Benzene B183707-BS1 LCS 21.230 25.000 84.9 70 - 130ug/L 1 <br />Bromodichloromethane B183707-BS1 LCS 22.140 25.000 88.6 70 - 130ug/L 1 <br />Chlorobenzene B183707-BS1 LCS 22.410 25.000 89.6 70 - 130ug/L 1 <br />Chloroethane B183707-BS1 LCS 28.860 25.000 115 70 - 130ug/L 1 <br />1,4-Dichlorobenzene B183707-BS1 LCS 22.410 25.000 89.6 70 - 130ug/L 1 <br />1,1-Dichloroethane B183707-BS1 LCS 22.360 25.000 89.4 70 - 130ug/L 1 <br />1,1-Dichloroethene B183707-BS1 LCS 23.130 25.000 92.5 70 - 130ug/L 1 <br />Toluene B183707-BS1 LCS 21.390 25.000 85.6 70 - 130ug/L 1 <br />Trichloroethene B183707-BS1 LCS 23.310 25.000 93.2 70 - 130ug/L 1 <br />1,2-Dichloroethane-d4 (Surrogate)B183707-BS1 LCS 9.8300 10.000 98.3 75 - 125ug/L 1 <br />Toluene-d8 (Surrogate)B183707-BS1 LCS 9.6800 10.000 96.8 80 - 120ug/L 1 <br />4-Bromofluorobenzene (Surrogate)B183707-BS1 LCS 9.7100 10.000 97.1 80 - 120ug/L 1 <br />QC Batch ID: B183708 <br />Benzene B183708-BS1 LCS 21.070 25.000 84.3 70 - 130ug/L 2 <br />Bromodichloromethane B183708-BS1 LCS 21.340 25.000 85.4 70 - 130ug/L 2 <br />Chlorobenzene B183708-BS1 LCS 22.470 25.000 89.9 70 - 130ug/L 2 <br />Chloroethane B183708-BS1 LCS 28.120 25.000 112 70 - 130ug/L 2 <br />1,4-Dichlorobenzene B183708-BS1 LCS 22.940 25.000 91.8 70 - 130ug/L 2 <br />1,1-Dichloroethane B183708-BS1 LCS 21.520 25.000 86.1 70 - 130ug/L 2 <br />1,1-Dichloroethene B183708-BS1 LCS 22.680 25.000 90.7 70 - 130ug/L 2 <br />Toluene B183708-BS1 LCS 21.640 25.000 86.6 70 - 130ug/L 2 <br />Trichloroethene B183708-BS1 LCS 22.430 25.000 89.7 70 - 130ug/L 2 <br />1,2-Dichloroethane-d4 (Surrogate)B183708-BS1 LCS 10.030 10.000 100 75 - 125ug/L 2 <br />Toluene-d8 (Surrogate)B183708-BS1 LCS 9.9000 10.000 99.0 80 - 120ug/L 2 <br />4-Bromofluorobenzene (Surrogate)B183708-BS1 LCS 9.7900 10.000 97.9 80 - 120ug/L 2 <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 58 of 71Report ID: 1001489532