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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 />CHCF- Forward Landfill <br />Elena Strom <br />Reported:06/05/2024 12:10 <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: B190638 <br />Benzene B190638-BS1 LCS 23.920 25.000 95.7 70 - 130ug/L 1 <br />Bromodichloromethane B190638-BS1 LCS 25.680 25.000 103 70 - 130ug/L 1 <br />Chlorobenzene B190638-BS1 LCS 24.450 25.000 97.8 70 - 130ug/L 1 <br />Chloroethane B190638-BS1 LCS 26.130 25.000 105 70 - 130ug/L 1 <br />1,4-Dichlorobenzene B190638-BS1 LCS 25.790 25.000 103 70 - 130ug/L 1 <br />1,1-Dichloroethane B190638-BS1 LCS 24.310 25.000 97.2 70 - 130ug/L 1 <br />1,1-Dichloroethene B190638-BS1 LCS 24.680 25.000 98.7 70 - 130ug/L 1 <br />Toluene B190638-BS1 LCS 24.430 25.000 97.7 70 - 130ug/L 1 <br />Trichloroethene B190638-BS1 LCS 26.640 25.000 107 70 - 130ug/L 1 <br />1,2-Dichloroethane-d4 (Surrogate)B190638-BS1 LCS 9.6300 10.000 96.3 75 - 125ug/L 1 <br />Toluene-d8 (Surrogate)B190638-BS1 LCS 9.9400 10.000 99.4 80 - 120ug/L 1 <br />4-Bromofluorobenzene (Surrogate)B190638-BS1 LCS 10.210 10.000 102 80 - 120ug/L 1 <br />QC Batch ID: B190727 <br />Benzene B190727-BS1 LCS 20.890 25.000 83.6 70 - 130ug/L 2 <br />Bromodichloromethane B190727-BS1 LCS 21.210 25.000 84.8 70 - 130ug/L 2 <br />Chlorobenzene B190727-BS1 LCS 20.970 25.000 83.9 70 - 130ug/L 2 <br />Chloroethane B190727-BS1 LCS 20.970 25.000 83.9 70 - 130ug/L 2 <br />1,4-Dichlorobenzene B190727-BS1 LCS 21.700 25.000 86.8 70 - 130ug/L 2 <br />1,1-Dichloroethane B190727-BS1 LCS 20.740 25.000 83.0 70 - 130ug/L 2 <br />1,1-Dichloroethene B190727-BS1 LCS 21.030 25.000 84.1 70 - 130ug/L 2 <br />Toluene B190727-BS1 LCS 21.000 25.000 84.0 70 - 130ug/L 2 <br />Trichloroethene B190727-BS1 LCS 20.920 25.000 83.7 70 - 130ug/L 2 <br />1,2-Dichloroethane-d4 (Surrogate)B190727-BS1 LCS 10.350 10.000 104 75 - 125ug/L 2 <br />Toluene-d8 (Surrogate)B190727-BS1 LCS 10.240 10.000 102 80 - 120ug/L 2 <br />4-Bromofluorobenzene (Surrogate)B190727-BS1 LCS 10.390 10.000 104 80 - 120ug/L 2 <br />Run #QC Sample ID QC Type Method Prep Date <br />Run <br />Analyst Instrument DilutionDate Time <br /> 1 B190638-BS1 LCS EPA-8260B MGC MS-V5 106/03/24 06/03/24 10:55 <br /> 2 B190727-BS1 LCS EPA-8260B TDH MS-V20 106/04/24 06/04/24 13:54 <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 36 of 39Report ID: 1001514400