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APTIM - Solid Waste Department <br />4171 Essen Lane <br />Baton Rouge, LA 70809 <br />Project: <br />Project Number: <br />Project Manager: <br />Foothill Landfill, SJ County <br />631038217 <br />Sandra Pimienta <br />Reported:01/20/2025 17:15 <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: B204313 <br />Benzene B204313-BS1 LCS 23.220 25.000 92.9 70 - 130ug/L 1 <br />Bromodichloromethane B204313-BS1 LCS 23.130 25.000 92.5 70 - 130ug/L 1 <br />Chlorobenzene B204313-BS1 LCS 23.790 25.000 95.2 70 - 130ug/L 1 <br />Chloroethane B204313-BS1 LCS 23.470 25.000 93.9 70 - 130ug/L 1 <br />1,4-Dichlorobenzene B204313-BS1 LCS 25.410 25.000 102 70 - 130ug/L 1 <br />1,1-Dichloroethane B204313-BS1 LCS 22.820 25.000 91.3 70 - 130ug/L 1 <br />1,1-Dichloroethene B204313-BS1 LCS 24.290 25.000 97.2 70 - 130ug/L 1 <br />Toluene B204313-BS1 LCS 23.970 25.000 95.9 70 - 130ug/L 1 <br />Trichloroethene B204313-BS1 LCS 24.250 25.000 97.0 70 - 130ug/L 1 <br />1,2-Dichloroethane-d4 (Surrogate) B204313-BS1 LCS 8.3500 10.000 83.5 75 - 125ug/L 1 <br />Toluene-d8 (Surrogate)B204313-BS1 LCS 9.9700 10.000 99.7 80 - 120ug/L 1 <br />4-Bromofluorobenzene (Surrogate) B204313-BS1 LCS 9.9200 10.000 99.2 80 - 120ug/L 1 <br />Run # QC Sample ID QC Type Method Prep Date <br />Run <br />Analyst Instrument DilutionDate Time <br /> 1 B204313-BS1 LCS EPA-8260B AGB MS-V21 101/15/25 01/15/25 12:31 <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 27Report ID: 1001564826