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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:12/05/2024 12:11 <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: B201948 <br />Benzene B201948-BS1 LCS 29.820 25.000 119 70 - 130ug/L 1 <br />Bromodichloromethane B201948-BS1 LCS 28.750 25.000 115 70 - 130ug/L 1 <br />Chlorobenzene B201948-BS1 LCS 29.290 25.000 117 70 - 130ug/L 1 <br />Chloroethane B201948-BS1 LCS 29.810 25.000 119 70 - 130ug/L 1 <br />1,4-Dichlorobenzene B201948-BS1 LCS 27.150 25.000 109 70 - 130ug/L 1 <br />1,1-Dichloroethane B201948-BS1 LCS 29.490 25.000 118 70 - 130ug/L 1 <br />1,1-Dichloroethene B201948-BS1 LCS 30.660 25.000 123 70 - 130ug/L 1 <br />Toluene B201948-BS1 LCS 29.340 25.000 117 70 - 130ug/L 1 <br />Trichloroethene B201948-BS1 LCS 29.230 25.000 117 70 - 130ug/L 1 <br />1,2-Dichloroethane-d4 (Surrogate)B201948-BS1 LCS 9.3400 10.000 93.4 75 - 125ug/L 1 <br />Toluene-d8 (Surrogate)B201948-BS1 LCS 10.080 10.000 101 80 - 120ug/L 1 <br />4-Bromofluorobenzene (Surrogate)B201948-BS1 LCS 10.290 10.000 103 80 - 120ug/L 1 <br />QC Batch ID: B201949 <br />Benzene B201949-BS1 LCS 31.120 25.000 124 70 - 130ug/L 2 <br />Bromodichloromethane B201949-BS1 LCS 28.830 25.000 115 70 - 130ug/L 2 <br />Chlorobenzene B201949-BS1 LCS 28.920 25.000 116 70 - 130ug/L 2 <br />Chloroethane B201949-BS1 LCS 30.700 25.000 123 70 - 130ug/L 2 <br />1,4-Dichlorobenzene B201949-BS1 LCS 27.850 25.000 111 70 - 130ug/L 2 <br />1,1-Dichloroethane B201949-BS1 LCS 30.640 25.000 123 70 - 130ug/L 2 <br />1,1-Dichloroethene B201949-BS1 LCS 30.810 25.000 123 70 - 130ug/L 2 <br />Toluene B201949-BS1 LCS 28.720 25.000 115 70 - 130ug/L 2 <br />Trichloroethene B201949-BS1 LCS 29.990 25.000 120 70 - 130ug/L 2 <br />1,2-Dichloroethane-d4 (Surrogate)B201949-BS1 LCS 8.7400 10.000 87.4 75 - 125ug/L 2 <br />Toluene-d8 (Surrogate)B201949-BS1 LCS 10.080 10.000 101 80 - 120ug/L 2 <br />4-Bromofluorobenzene (Surrogate)B201949-BS1 LCS 10.030 10.000 100 80 - 120ug/L 2 <br />QC Batch ID: B202019 <br />Benzene B202019-BS1 LCS 28.890 25.000 116 70 - 130ug/L 3 <br />Bromodichloromethane B202019-BS1 LCS 28.950 25.000 116 70 - 130ug/L 3 <br />Chlorobenzene B202019-BS1 LCS 30.030 25.000 120 70 - 130ug/L 3 <br />Chloroethane B202019-BS1 LCS 28.640 25.000 115 70 - 130ug/L 3 <br />1,4-Dichlorobenzene B202019-BS1 LCS 28.790 25.000 115 70 - 130ug/L 3 <br />1,1-Dichloroethane B202019-BS1 LCS 28.340 25.000 113 70 - 130ug/L 3 <br />1,1-Dichloroethene B202019-BS1 LCS 29.870 25.000 119 70 - 130ug/L 3 <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 122 of 134Report ID: 1001555155