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Arcadis- SLO <br />735 Tank Farm Rd, Suite 150 <br />San Luis Obispo, CA 93401 <br />Project: <br />Project Number: <br />Project Manager: <br />Forward Landfill <br />Forward Landfill-Forward GWTS <br />Drew Feucht <br />Reported:07/17/2023 8:32 <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: B169832 <br />Benzene B169832-BS1 LCS 24.550 25.000 98.2 70 - 130ug/L 1 <br />Bromodichloromethane B169832-BS1 LCS 27.230 25.000 109 70 - 130ug/L 1 <br />Chlorobenzene B169832-BS1 LCS 25.300 25.000 101 70 - 130ug/L 1 <br />Chloroethane B169832-BS1 LCS 25.110 25.000 100 70 - 130ug/L 1 <br />1,4-Dichlorobenzene B169832-BS1 LCS 25.240 25.000 101 70 - 130ug/L 1 <br />1,1-Dichloroethane B169832-BS1 LCS 24.540 25.000 98.2 70 - 130ug/L 1 <br />1,1-Dichloroethene B169832-BS1 LCS 25.910 25.000 104 70 - 130ug/L 1 <br />Toluene B169832-BS1 LCS 25.220 25.000 101 70 - 130ug/L 1 <br />Trichloroethene B169832-BS1 LCS 26.300 25.000 105 70 - 130ug/L 1 <br />1,2-Dichloroethane-d4 (Surrogate)B169832-BS1 LCS 10.910 10.000 109 75 - 125ug/L 1 <br />Toluene-d8 (Surrogate)B169832-BS1 LCS 10.150 10.000 102 80 - 120ug/L 1 <br />4-Bromofluorobenzene (Surrogate)B169832-BS1 LCS 10.730 10.000 107 80 - 120ug/L 1 <br />Run #QC Sample ID QC Type Method Prep Date <br />Run <br />Analyst Instrument DilutionDate Time <br /> 1 B169832-BS1 LCS EPA-8260B TDH MS-V20 107/13/23 07/14/23 01:56 <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 18 of 20Report ID: 1001440110