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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 GWTS <br />Drew Feucht <br />Reported:11/13/2023 12:32 <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: B178195 <br />Benzene B178195-BS1 LCS 24.060 25.000 96.2 70 - 130ug/L 1 <br />LCSDB178195-BSD1 23.250 25.000 93.0 3.4 70 - 130 20ug/L 2 <br />Bromodichloromethane B178195-BS1 LCS 26.250 25.000 105 70 - 130ug/L 1 <br />LCSDB178195-BSD1 25.300 25.000 101 3.7 70 - 130 20ug/L 2 <br />Chlorobenzene B178195-BS1 LCS 24.750 25.000 99.0 70 - 130ug/L 1 <br />LCSDB178195-BSD1 23.390 25.000 93.6 5.7 70 - 130 20ug/L 2 <br />Chloroethane B178195-BS1 LCS 29.070 25.000 116 70 - 130ug/L 1 <br />LCSDB178195-BSD1 28.010 25.000 112 3.7 70 - 130 20ug/L 2 <br />1,4-Dichlorobenzene B178195-BS1 LCS 26.150 25.000 105 70 - 130ug/L 1 <br />LCSDB178195-BSD1 25.190 25.000 101 3.7 70 - 130 20ug/L 2 <br />1,1-Dichloroethane B178195-BS1 LCS 24.120 25.000 96.5 70 - 130ug/L 1 <br />LCSDB178195-BSD1 23.150 25.000 92.6 4.1 70 - 130 20ug/L 2 <br />1,1-Dichloroethene B178195-BS1 LCS 23.570 25.000 94.3 70 - 130ug/L 1 <br />LCSDB178195-BSD1 21.990 25.000 88.0 6.9 70 - 130 20ug/L 2 <br />Toluene B178195-BS1 LCS 24.280 25.000 97.1 70 - 130ug/L 1 <br />LCSDB178195-BSD1 22.800 25.000 91.2 6.3 70 - 130 20ug/L 2 <br />Trichloroethene B178195-BS1 LCS 24.470 25.000 97.9 70 - 130ug/L 1 <br />LCSDB178195-BSD1 22.570 25.000 90.3 8.1 70 - 130 20ug/L 2 <br />1,2-Dichloroethane-d4 (Surrogate)B178195-BS1 LCS 9.5200 10.000 95.2 75 - 125ug/L 1 <br />LCSDB178195-BSD1 10.330 10.000 103 8.2 75 - 125ug/L 2 <br />Toluene-d8 (Surrogate)B178195-BS1 LCS 10.110 10.000 101 80 - 120ug/L 1 <br />LCSDB178195-BSD1 10.090 10.000 101 0.2 80 - 120ug/L 2 <br />4-Bromofluorobenzene (Surrogate)B178195-BS1 LCS 9.9400 10.000 99.4 80 - 120ug/L 1 <br />LCSDB178195-BSD1 9.6300 10.000 96.3 3.2 80 - 120ug/L 2 <br />Run #QC Sample ID QC Type Method Prep Date <br />Run <br />Analyst Instrument DilutionDate Time <br /> 1 B178195-BS1 LCS EPA-8260B MGC MS-V5 111/12/23 11/12/23 09:41 <br /> 2 B178195-BSD1 LCSD EPA-8260B MGC MS-V5 111/12/23 11/12/23 10:05 <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: 1001469648