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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 />Forward Landfill-Forward GWTS <br />Drew Feucht <br />Reported:08/11/2023 15:12 <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: B171553 <br />Benzene B171553-BS1 LCS 24.600 25.000 98.4 70 - 130ug/L 1 <br />Bromodichloromethane B171553-BS1 LCS 26.500 25.000 106 70 - 130ug/L 1 <br />Chlorobenzene B171553-BS1 LCS 25.890 25.000 104 70 - 130ug/L 1 <br />Chloroethane B171553-BS1 LCS 24.490 25.000 98.0 70 - 130ug/L 1 <br />1,4-Dichlorobenzene B171553-BS1 LCS 25.160 25.000 101 70 - 130ug/L 1 <br />1,1-Dichloroethane B171553-BS1 LCS 24.750 25.000 99.0 70 - 130ug/L 1 <br />1,1-Dichloroethene B171553-BS1 LCS 25.800 25.000 103 70 - 130ug/L 1 <br />Toluene B171553-BS1 LCS 25.430 25.000 102 70 - 130ug/L 1 <br />Trichloroethene B171553-BS1 LCS 26.290 25.000 105 70 - 130ug/L 1 <br />1,2-Dichloroethane-d4 (Surrogate)B171553-BS1 LCS 9.2300 10.000 92.3 75 - 125ug/L 1 <br />Toluene-d8 (Surrogate)B171553-BS1 LCS 9.9100 10.000 99.1 80 - 120ug/L 1 <br />4-Bromofluorobenzene (Surrogate)B171553-BS1 LCS 9.9500 10.000 99.5 80 - 120ug/L 1 <br />Run #QC Sample ID QC Type Method Prep Date <br />Run <br />Analyst Instrument DilutionDate Time <br /> 1 B171553-BS1 LCS EPA-8260B TDH MS-V20 108/09/23 08/10/23 02:08 <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: 1001447794