COMPLIANCE INFO_Q3 2025 MONITORING REPORT 10-30-25

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Appendix D - Cumulative Historical Data for the Past Year WMU D-01N 5/30/2025 Ethyl-t-Butyl Ether <1 A10 ND 1 μg/L ug/L No 8260B WMU D-01N 5/30/2025 2-Hexanone <20 A10 ND 20 μg/L ug/L No 8260B WMU D-01N 5/30/2025 2-Butanone <20 A10 ND 20 μg/L ug/L No 8260B WMU D-01N 5/30/2025 Methyl Iodide <4 A10 ND 4 μg/L ug/L No 8260B WMU D-01N 5/30/2025 4-Methyl-2-Pentanone <20 A10 ND 20 μg/L ug/L No 8260B WMU D-01N 5/30/2025 Vinyl acetate <20 A10 ND 20 μg/L ug/L No 8260B WMU D-01N 2/21/2025 Benzene 4 4 0.5 μg/L ug/L Yes 8260B WMU D-01N 2/21/2025 Bromochloromethane <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 2/21/2025 Bromodichloromethane <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 2/21/2025 Bromoform <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 2/21/2025 Bromomethane <1.0 ND 1 μg/L ug/L No 8260B WMU D-01N 2/21/2025 Carbon tetrachloride <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 2/21/2025 Chlorobenzene 0.88 0.88 0.5 μg/L ug/L Yes 8260B WMU D-01N 2/21/2025 Chloroethane <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 2/21/2025 Chloroform <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 2/21/2025 Chloromethane <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 2/21/2025 Dibromochloromethane <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 2/21/2025 1,2-Dibromo-3-Chloropropane <1.0 ND 1 μg/L ug/L No 8260B WMU D-01N 2/21/2025 1,2-Dibromoethane <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 2/21/2025 Dibromomethane <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 2/21/2025 1,2-Dichlorobenzene 0.25 J 0.25 0.5 μg/L ug/L Yes 8260B WMU D-01N 2/21/2025 1,3-Dichlorobenzene <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 2/21/2025 1,4-Dichlorobenzene 7.2 7.2 0.5 μg/L ug/L Yes 8260B WMU D-01N 2/21/2025 Dichlorodifluoromethane <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 2/21/2025 1,1-Dichloroethane <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 2/21/2025 1,2-Dichloroethane 1.3 1.3 0.5 μg/L ug/L Yes 8260B WMU D-01N 2/21/2025 1,1-Dichloroethene <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 2/21/2025 cis-1,2-Dichloroethene 0.76 0.76 0.5 μg/L ug/L Yes 8260B WMU D-01N 2/21/2025 trans-1,2-Dichloroethene <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 2/21/2025 1,2-Dichloropropane 0.5 0.5 0.5 μg/L ug/L Yes 8260B WMU D-01N 2/21/2025 cis-1,3-Dichloropropene <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 2/21/2025 trans-1,3-Dichloropropene <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 2/21/2025 Ethylbenzene 2.5 2.5 0.5 μg/L ug/L Yes 8260B WMU D-01N 2/21/2025 Hexachlorobutadiene <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 2/21/2025 Methylene Chloride <1.0 ND 1 μg/L ug/L No 8260B WMU D-01N 2/21/2025 MTBE 8.1 8.1 0.5 μg/L ug/L Yes 8260B WMU D-01N 2/21/2025 Naphthalene 4.8 4.8 0.5 μg/L ug/L Yes 8260B WMU D-01N 2/21/2025 Styrene 0.16 J 0.16 0.5 μg/L ug/L Yes 8260B WMU D-01N 2/21/2025 1,1,1,2-Tetrachloroethane <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 2/21/2025 1,1,2,2-Tetrachloroethane <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 2/21/2025 Tetrachloroethene <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 2/21/2025 Toluene 0.66 0.66 0.5 μg/L ug/L Yes 8260B WMU D-01N 2/21/2025 1,2,4-Trichlorobenzene <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 2/21/2025 1,1,1-Trichloroethane <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 2/21/2025 1,1,2-Trichloroethane <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 2/21/2025 Trichloroethene <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 2/21/2025 Trichlorofluoromethane <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 2/21/2025 1,2,3-Trichloropropane <1.0 ND 1 μg/L ug/L No 8260B WMU D-01N 2/21/2025 Vinyl Chloride <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 2/21/2025 Xylenes, Total 4.1 4.1 1 μg/L ug/L Yes 8260B WMU D-01N 2/21/2025 Acetone <10 ND 10 μg/L ug/L No 8260B WMU D-01N 2/21/2025 Acrylonitrile <5.0 ND 5 μg/L ug/L No 8260B WMU D-01N 2/21/2025 Tert-Amyl-Methyl Ether 0.45 J 0.45 0.5 μg/L ug/L Yes8260B WMU D-01N 2/21/2025 tert-Butyl Alcohol 7800 A01 7800 100 μg/L ug/L Yes 8260B WMU D-01N 2/21/2025 Carbon Disulfide <1.0 A40 ND 1 μg/L ug/L No 8260B WMU D-01N 2/21/2025 Trans-1,4-Dichloro-2-Butene <5.0 ND 5 μg/L ug/L No 8260B WMU D-01N 2/21/2025 Diisopropyl Ether <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 2/21/2025 Ethanol <250 ND 250 μg/L ug/L No 8260B WMU D-01N 2/21/2025 Ethyl-t-Butyl Ether <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 2/21/2025 2-Hexanone <10 ND 10 μg/L ug/L No 8260B WMU D-01N 2/21/2025 2-Butanone <10 ND 10 μg/L ug/L No 8260B WMU D-01N 2/21/2025 Methyl Iodide <2.0 ND 2 μg/L ug/L No 8260B WMU D-01N 2/21/2025 4-Methyl-2-Pentanone <10 ND 10 μg/L ug/L No 8260B WMU D-01N 2/21/2025 Vinyl acetate <10 ND 10 μg/L ug/L No 8260B WMU D-01N 3/25/2025 Benzene 3.9 3.9 0.5 μg/L ug/L Yes 8260B WMU D-01N 3/25/2025 Bromochloromethane <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 3/25/2025 Bromodichloromethane <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 3/25/2025 Bromoform <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 3/25/2025 Bromomethane <1.0 ND 1 μg/L ug/L No 8260B WMU D-01N 3/25/2025 Carbon tetrachloride <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 3/25/2025 Chlorobenzene 1 1 0.5 μg/L ug/L Yes 8260B WMU D-01N 3/25/2025 Chloroethane <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 3/25/2025 Chloroform <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 3/25/2025 Chloromethane <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 3/25/2025 Dibromochloromethane <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 3/25/2025 1,2-Dibromo-3-Chloropropane <1.0 ND 1 μg/L ug/L No 8260B WMU D-01N 3/25/2025 1,2-Dibromoethane <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 3/25/2025 Dibromomethane <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 3/25/2025 1,2-Dichlorobenzene 0.29 J 0.29 0.5 μg/L ug/L Yes 8260B WMU D-01N 3/25/2025 1,3-Dichlorobenzene <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 3/25/2025 1,4-Dichlorobenzene 8.3 8.3 0.5 μg/L ug/L Yes 8260B WMU D-01N 3/25/2025 Dichlorodifluoromethane <0.50 ND 0.5 μg/L ug/L No 8260B WMU D-01N 3/25/2025 1,1-Dichloroethane <0.50 ND 0.5 μg/L ug/L No 8260B