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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 />4Q23 Austin Unit <br />Drew Feucht <br />Reported:11/30/2023 11:54 <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: B177977 <br />Benzene B177977-BS1 LCS 23.780 25.000 95.1 70 - 130ug/L 1 <br />Bromodichloromethane B177977-BS1 LCS 21.790 25.000 87.2 70 - 130ug/L 1 <br />Chlorobenzene B177977-BS1 LCS 18.620 25.000 74.5 70 - 130ug/L 1 <br />Chloroethane B177977-BS1 LCS 28.090 25.000 112 70 - 130ug/L 1 <br />1,4-Dichlorobenzene B177977-BS1 LCS 18.320 25.000 73.3 70 - 130ug/L 1 <br />1,1-Dichloroethane B177977-BS1 LCS 25.710 25.000 103 70 - 130ug/L 1 <br />1,1-Dichloroethene B177977-BS1 LCS 28.800 25.000 115 70 - 130ug/L 1 <br />Toluene B177977-BS1 LCS 22.980 25.000 91.9 70 - 130ug/L 1 <br />Trichloroethene B177977-BS1 LCS 25.110 25.000 100 70 - 130ug/L 1 <br />1,2-Dichloroethane-d4 (Surrogate)B177977-BS1 LCS 10.930 10.000 109 75 - 125ug/L 1 <br />Toluene-d8 (Surrogate)B177977-BS1 LCS 10.420 10.000 104 80 - 120ug/L 1 <br />4-Bromofluorobenzene (Surrogate)B177977-BS1 LCS 10.910 10.000 109 80 - 120ug/L 1 <br />QC Batch ID: B178649 <br />Benzene B178649-BS1 LCS 27.200 25.000 109 70 - 130ug/L 2 <br />Bromodichloromethane B178649-BS1 LCS 28.340 25.000 113 70 - 130ug/L 2 <br />Chlorobenzene B178649-BS1 LCS 27.980 25.000 112 70 - 130ug/L 2 <br />Chloroethane B178649-BS1 LCS 27.630 25.000 111 70 - 130ug/L 2 <br />1,4-Dichlorobenzene B178649-BS1 LCS 28.300 25.000 113 70 - 130ug/L 2 <br />1,1-Dichloroethane B178649-BS1 LCS 26.590 25.000 106 70 - 130ug/L 2 <br />1,1-Dichloroethene B178649-BS1 LCS 29.120 25.000 116 70 - 130ug/L 2 <br />Toluene B178649-BS1 LCS 27.350 25.000 109 70 - 130ug/L 2 <br />Trichloroethene B178649-BS1 LCS 27.960 25.000 112 70 - 130ug/L 2 <br />1,2-Dichloroethane-d4 (Surrogate)B178649-BS1 LCS 9.5300 10.000 95.3 75 - 125ug/L 2 <br />Toluene-d8 (Surrogate)B178649-BS1 LCS 10.030 10.000 100 80 - 120ug/L 2 <br />4-Bromofluorobenzene (Surrogate)B178649-BS1 LCS 9.8500 10.000 98.5 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 101 of 158Report ID: 1001472825