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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 />30216409.01 <br />Ari Terry <br />Reported:12/11/2024 16:47 <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: B202152 <br />Benzene B202152-BS1 LCS 24.960 25.000 99.8 70 - 130ug/L 1 <br />Bromodichloromethane B202152-BS1 LCS 24.060 25.000 96.2 70 - 130ug/L 1 <br />Chlorobenzene B202152-BS1 LCS 24.330 25.000 97.3 70 - 130ug/L 1 <br />Chloroethane B202152-BS1 LCS 23.310 25.000 93.2 70 - 130ug/L 1 <br />1,4-Dichlorobenzene B202152-BS1 LCS 26.700 25.000 107 70 - 130ug/L 1 <br />1,1-Dichloroethane B202152-BS1 LCS 24.820 25.000 99.3 70 - 130ug/L 1 <br />1,1-Dichloroethene B202152-BS1 LCS 24.190 25.000 96.8 70 - 130ug/L 1 <br />Toluene B202152-BS1 LCS 24.350 25.000 97.4 70 - 130ug/L 1 <br />Trichloroethene B202152-BS1 LCS 23.880 25.000 95.5 70 - 130ug/L 1 <br />1,2-Dichloroethane-d4 (Surrogate)B202152-BS1 LCS 10.410 10.000 104 75 - 125ug/L 1 <br />Toluene-d8 (Surrogate)B202152-BS1 LCS 10.000 10.000 100 80 - 120ug/L 1 <br />4-Bromofluorobenzene (Surrogate)B202152-BS1 LCS 9.7800 10.000 97.8 80 - 120ug/L 1 <br />QC Batch ID: B202153 <br />Benzene B202153-BS1 LCS 23.180 25.000 92.7 70 - 130ug/L 2 <br />Bromodichloromethane B202153-BS1 LCS 22.760 25.000 91.0 70 - 130ug/L 2 <br />Chlorobenzene B202153-BS1 LCS 22.980 25.000 91.9 70 - 130ug/L 2 <br />Chloroethane B202153-BS1 LCS 21.610 25.000 86.4 70 - 130ug/L 2 <br />1,4-Dichlorobenzene B202153-BS1 LCS 25.750 25.000 103 70 - 130ug/L 2 <br />1,1-Dichloroethane B202153-BS1 LCS 22.970 25.000 91.9 70 - 130ug/L 2 <br />1,1-Dichloroethene B202153-BS1 LCS 22.230 25.000 88.9 70 - 130ug/L 2 <br />Toluene B202153-BS1 LCS 22.740 25.000 91.0 70 - 130ug/L 2 <br />Trichloroethene B202153-BS1 LCS 22.120 25.000 88.5 70 - 130ug/L 2 <br />1,2-Dichloroethane-d4 (Surrogate)B202153-BS1 LCS 10.660 10.000 107 75 - 125ug/L 2 <br />Toluene-d8 (Surrogate)B202153-BS1 LCS 10.070 10.000 101 80 - 120ug/L 2 <br />4-Bromofluorobenzene (Surrogate)B202153-BS1 LCS 10.000 10.000 100 80 - 120ug/L 2 <br />QC Batch ID: B202256 <br />Benzene B202256-BS1 LCS 22.710 25.000 90.8 70 - 130ug/L 3 <br />Bromodichloromethane B202256-BS1 LCS 23.340 25.000 93.4 70 - 130ug/L 3 <br />Chlorobenzene B202256-BS1 LCS 19.330 25.000 77.3 70 - 130ug/L 3 <br />Chloroethane B202256-BS1 LCS 23.870 25.000 95.5 70 - 130ug/L 3 <br />1,4-Dichlorobenzene B202256-BS1 LCS 26.210 25.000 105 70 - 130ug/L 3 <br />1,1-Dichloroethane B202256-BS1 LCS 23.970 25.000 95.9 70 - 130ug/L 3 <br />1,1-Dichloroethene B202256-BS1 LCS 25.510 25.000 102 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 83 of 95Report ID: 1001557029