COMPLIANCE INFO_Q3 2025 MONITORING REPORT 10-30-25

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Appendix D - Cumulative Historical Data for the Past Year EW-2 8/8/2025 Dibromomethane <0.5 ND 0.5 μg/L ug/L No 8260B EW-2 8/8/2025 1,2-Dichlorobenzene <0.5 ND 0.5 μg/L ug/L No 8260B EW-2 8/8/2025 1,3-Dichlorobenzene <0.5 ND 0.5 μg/L ug/L No 8260B EW-2 8/8/2025 1,4-Dichlorobenzene <0.5 ND 0.5 μg/L ug/L No 8260B EW-2 8/8/2025 Dichlorodifluoromethane 0.75 0.75 0.5 μg/L ug/L Yes 8260B EW-2 8/8/2025 1,1-Dichloroethane 0.65 0.65 0.5 μg/L ug/L Yes 8260B EW-2 8/8/2025 1,2-Dichloroethane <0.5 ND 0.5 μg/L ug/L No 8260B EW-2 8/8/2025 1,1-Dichloroethene 0.43 J 0.43 0.5 μg/L ug/L Yes 8260B EW-2 8/8/2025 cis-1,2-Dichloroethene 0.14 J 0.14 0.5 μg/L ug/L Yes 8260B EW-2 8/8/2025 trans-1,2-Dichloroethene <0.5 ND 0.5 μg/L ug/L No 8260B EW-2 8/8/2025 1,2-Dichloropropane <0.5 ND 0.5 μg/L ug/L No 8260B EW-2 8/8/2025 cis-1,3-Dichloropropene <0.5 ND 0.5 μg/L ug/L No 8260B EW-2 8/8/2025 1,2,4-Trichlorobenzene <0.5 ND 0.5 μg/L ug/L No 8260B EW-2 8/8/2025 1,1,1-Trichloroethane <0.5 ND 0.5 μg/L ug/L No 8260B EW-2 8/8/2025 1,1,2-Trichloroethane <0.5 ND 0.5 μg/L ug/L No 8260B EW-2 8/8/2025 Trichloroethene 3.9 3.9 0.5 μg/L ug/L Yes 8260B EW-2 8/8/2025 Trichlorofluoromethane 0.14 J 0.14 0.5 μg/L ug/L Yes 8260B EW-2 8/8/2025 1,2,3-Trichloropropane <1 ND 1 μg/L ug/L No 8260B EW-2 8/8/2025 Vinyl Chloride <0.5 ND 0.5 μg/L ug/L No 8260B EW-2 8/8/2025 Xylenes, Total <1 ND 1 μg/L ug/L No 8260B EW-2 8/8/2025 Acetone <10 ND 10 μg/L ug/L No 8260B EW-2 8/8/2025 Acrylonitrile <5 ND 5 μg/L ug/L No 8260B EW-2 8/8/2025 Tert-Amyl-Methyl Ether <0.5 ND 0.5 μg/L ug/L No 8260B EW-2 8/8/2025 trans-1,3-Dichloropropene <0.5 ND 0.5 μg/L ug/L No 8260B EW-2 8/8/2025 Ethylbenzene <0.5 ND 0.5 μg/L ug/L No 8260B EW-2 8/8/2025 Hexachlorobutadiene <0.5 ND 0.5 μg/L ug/L No 8260B EW-2 8/8/2025 Methylene Chloride <1 ND 1 μg/L ug/L No 8260B EW-2 8/8/2025 MTBE <0.5 ND 0.5 μg/L ug/L No 8260B EW-2 8/8/2025 Naphthalene <0.5 ND 0.5 μg/L ug/L No 8260B EW-2 8/8/2025 Styrene <0.5 ND 0.5 μg/L ug/L No 8260B EW-2 8/8/2025 1,1,1,2-Tetrachloroethane <0.5 ND 0.5 μg/L ug/L No 8260B EW-2 8/8/2025 1,1,2,2-Tetrachloroethane <0.5 ND 0.5 μg/L ug/L No 8260B EW-2 8/8/2025 Tetrachloroethene 8.5 8.5 0.5 μg/L ug/L Yes 8260B EW-2 8/8/2025 Toluene 0.68 0.68 0.5 μg/L ug/L Yes 8260B EW-2 8/8/2025 tert-Butyl Alcohol <10 ND 10 μg/L ug/L No 8260B EW-2 8/8/2025 Carbon Disulfide <1 ND 1 μg/L ug/L No 8260B EW-2 8/8/2025 Trans-1,4-Dichloro-2-Butene <5 ND 5 μg/L ug/L No 8260B EW-2 8/8/2025 Diisopropyl Ether <0.5 ND 0.5 μg/L ug/L No 8260B EW-2 8/8/2025 Ethanol <250 ND 250 μg/L ug/L No 8260B EW-2 8/8/2025 Ethyl-t-Butyl Ether <0.5 ND 0.5 μg/L ug/L No 8260B EW-2 8/8/2025 2-Hexanone <10 ND 10 μg/L ug/L No 8260B EW-2 8/8/2025 2-Butanone <10 ND 10 μg/L ug/L No 8260B EW-2 8/8/2025 Methyl Iodide <2 ND 2 μg/L ug/L No 8260B EW-2 8/8/2025 4-Methyl-2-Pentanone <10 ND 10 μg/L ug/L No 8260B EW-2 8/8/2025 Vinyl acetate <10 ND 10 μg/L ug/L No 8260B EW-2 5/23/2025 Chloride 26 26 0.5 mg/L mg/L Yes 300 EW-2 5/23/2025 Nitrogen, Nitrate 2 2 0.1 mg/L mg/L Yes 300 EW-2 5/23/2025 Sulfate 40 40 1 mg/L mg/L Yes 300 EW-2 8/8/2025 Chloride 29 29 0.5 mg/L mg/L Yes 300 EW-2 8/8/2025 Nitrogen, Nitrate 6.2 6.2 0.1 mg/L mg/L Yes 300 EW-2 8/8/2025 Sulfate 51 51 1 mg/L mg/L Yes 300 EW-2 5/23/2025 Solids, Total Dissolved 505 505 10 mg/L mg/l Yes 2540C EW-2 5/23/2025 1,2,3-Trichloropropane 0.0046 J 0.0046 0.005 μg/L ug/L Yes 524.2 EW-2 8/8/2025 Solids, Total Dissolved 507 507 10 mg/L mg/l Yes 2540C EW-2 8/8/2025 1,2,3-Trichloropropane 0.039 0.039 0.005 μg/L ug/L Yes 524.2 EW-3 5/23/2025 Bicarbonate 340 340 5 mg/L mg/L Yes 310.1 EW-3 5/23/2025 Carbonate <2.5 ND 2.5 mg/L mg/L No 310.1 EW-3 8/8/2025 Bicarbonate 330 330 5 mg/L mg/L Yes 310.1 EW-3 8/8/2025 Carbonate <2.5 ND 2.5 mg/L mg/L No 310.1 EW-3 5/23/2025 Calcium, Dissolved 83 83 0.1 mg/L mg/L Yes 6010B EW-3 5/23/2025 Magnesium, Dissolved 39 39 0.05 mg/L mg/L Yes 6010B EW-3 5/23/2025 Sodium, Dissolved 36 36 1 mg/L mg/L Yes 6010B EW-3 5/23/2025 Potassium, Dissolved 6.7 6.7 1 mg/L mg/L Yes 6010B EW-3 5/23/2025 Strontium 860 860 10 μg/L ug/L Yes 6010B EW-3 8/8/2025 Calcium, Dissolved 95 95 0.1 mg/L mg/L Yes 6010B EW-3 8/8/2025 Magnesium, Dissolved 51 51 0.05 mg/L mg/L Yes 6010B EW-3 8/8/2025 Sodium, Dissolved 44 44 1 mg/L mg/L Yes 6010B EW-3 8/8/2025 Potassium, Dissolved 7.2 7.2 1 mg/L mg/L Yes 6010B EW-3 8/8/2025 Strontium 1000 1000 10 μg/L ug/L Yes 6010B EW-3 7/29/2024 Benzene <0.50 ND 0.5 μg/L ug/L No 8260B EW-3 7/29/2024 Bromochloromethane <0.50 ND 0.5 μg/L ug/L No 8260B EW-3 7/29/2024 Bromodichloromethane <0.50 ND 0.5 μg/L ug/L No 8260B EW-3 7/29/2024 Bromoform <0.50 ND 0.5 μg/L ug/L No 8260B EW-3 7/29/2024 Bromomethane <1.0 ND 1 μg/L ug/L No 8260B EW-3 7/29/2024 Carbon tetrachloride 5.6 5.6 0.5 μg/L ug/L Yes 8260B EW-3 7/29/2024 Chlorobenzene <0.50 ND 0.5 μg/L ug/L No 8260B EW-3 7/29/2024 Chloroethane <0.50 ND 0.5 μg/L ug/L No 8260B EW-3 7/29/2024 Chloroform 1.9 1.9 0.5 μg/L ug/L Yes 8260B EW-3 7/29/2024 Chloromethane <0.50 ND 0.5 μg/L ug/L No 8260B EW-3 7/29/2024 Dibromochloromethane <0.50 ND 0.5 μg/L ug/L No 8260B EW-3 7/29/2024 1,2-Dibromo-3-Chloropropane <1.0 ND 1 μg/L ug/L No 8260B EW-3 7/29/2024 1,2-Dibromoethane <0.50 ND 0.5 μg/L ug/L No 8260B EW-3 7/29/2024 Dibromomethane <0.50 ND 0.5 μg/L ug/L No 8260B