COMPLIANCE INFO_REV.4TH QTR-ANNUAL REPORT 6/26/2025

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Appendix D. Cumulative Historical Data for the Past Year Sample ID Sample Date Parameter Result Lab Result (numeric)Lab Limit Lab Unit Detect Method 8106 AUSTIN RD 3/15/2024 tert-Butyl Alcohol <10 ug/L 10 ug/L No 8260B 8106 AUSTIN RD 3/15/2024 Carbon Disulfide <1.0 ug/L 1 ug/L No 8260B 8106 AUSTIN RD 3/15/2024 Trans-1,4-Dichloro-2-Butene <5.0 ug/L 5 ug/L No 8260B 8106 AUSTIN RD 3/15/2024 Diisopropyl Ether <0.50 ug/L 0.5 ug/L No 8260B 8106 AUSTIN RD 3/15/2024 Ethanol <250 ug/L 250 ug/L No 8260B 8106 AUSTIN RD 3/15/2024 Ethyl-t-Butyl Ether <0.50 ug/L 0.5 ug/L No 8260B 8106 AUSTIN RD 3/15/2024 2-Hexanone <10 ug/L 10 ug/L No 8260B 8106 AUSTIN RD 3/15/2024 2-Butanone <10 ug/L 10 ug/L No 8260B 8106 AUSTIN RD 3/15/2024 Methyl Iodide <2.0 ug/L 2 ug/L No 8260B 8106 AUSTIN RD 3/15/2024 4-Methyl-2-Pentanone <10 ug/L 10 ug/L No 8260B 8106 AUSTIN RD 3/15/2024 Vinyl acetate <10 ug/L 10 ug/L No 8260B 8106 AUSTIN RD 3/15/2024 Tetrachloroethene 4.7 ug/L 0.5 ug/L Yes 8260B 8106 AUSTIN RD 3/15/2024 Trichloroethene 0.73 ug/L 0.5 ug/L Yes 8260B 8106 AUSTIN RD 3/15/2024 Benzene <0.50 ug/L 0.5 ug/L No 8260B 8106 AUSTIN RD 3/15/2024 Bromochloromethane <0.50 ug/L 0.5 ug/L No 8260B 8106 AUSTIN RD 3/15/2024 Bromodichloromethane <0.50 ug/L 0.5 ug/L No 8260B 8106 AUSTIN RD 3/15/2024 Bromoform <0.50 ug/L 0.5 ug/L No 8260B 8106 AUSTIN RD 3/15/2024 Bromomethane <1.0 ug/L 1 ug/L No 8260B 8106 AUSTIN RD 3/15/2024 Carbon tetrachloride <0.50 ug/L 0.5 ug/L No 8260B 8106 AUSTIN RD 3/15/2024 Chlorobenzene <0.50 ug/L 0.5 ug/L No 8260B 8106 AUSTIN RD 3/15/2024 Chloroethane <0.50 ug/L 0.5 ug/L No 8260B 8106 AUSTIN RD 3/15/2024 Chloroform <0.50 ug/L 0.5 ug/L No 8260B 8106 AUSTIN RD 3/15/2024 Chloromethane <0.50 ug/L 0.5 ug/L No 8260B 8106 AUSTIN RD 3/15/2024 Dibromochloromethane <0.50 ug/L 0.5 ug/L No 8260B 8106 AUSTIN RD 3/15/2024 1,2-Dibromo-3-Chloropropane <1.0 ug/L 1 ug/L No 8260B 8106 AUSTIN RD 3/15/2024 1,2-Dibromoethane <0.50 ug/L 0.5 ug/L No 8260B 8106 AUSTIN RD 3/15/2024 Dibromomethane <0.50 ug/L 0.5 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 Hexachlorobutadiene <0.5 ND 0.5 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 Methylene Chloride <1 ND 1 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 MTBE <0.5 ND 0.5 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 Naphthalene <0.5 ND 0.5 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 Styrene <0.5 ND 0.5 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 1,1,1,2-Tetrachloroethane <0.5 ND 0.5 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 1,1,2,2-Tetrachloroethane <0.5 ND 0.5 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 Tetrachloroethene 4.3 4.3 0.5 ug/L Yes 8260B 8106 AUSTIN RD 5/14/2024 Toluene <0.5 ND 0.5 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 1,2,4-Trichlorobenzene <0.5 ND 0.5 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 1,1,1-Trichloroethane <0.5 ND 0.5 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 1,1,2-Trichloroethane <0.5 ND 0.5 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 Trichloroethene 0.69 0.69 0.5 ug/L Yes 8260B 8106 AUSTIN RD 5/14/2024 Trichlorofluoromethane <0.5 ND 0.5 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 1,2,3-Trichloropropane <1 ND 1 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 Vinyl Chloride <0.5 ND 0.5 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 Xylenes, Total <1 ND 1 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 Acetone <10 ND 10 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 Acetonitrile <10 ND 10 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 Acrolein <10 ND 10 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 Acrylonitrile <5 ND 5 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 Allyl Chloride <5 ND 5 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 Tert-Amyl-Methyl Ether <0.5 ND 0.5 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 tert-Butyl Alcohol <10 ND 10 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 Carbon Disulfide <1 ND 1 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 2-Chloro-1,3-Butadiene <5 ND 5 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 Trans-1,4-Dichloro-2-Butene <5 ND 5 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 Diisopropyl Ether <0.5 ND 0.5 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 Ethanol <250 ND 250 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 Ethyl Methacrylate <4 ND 4 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 Ethyl-t-Butyl Ether <0.5 ND 0.5 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 2-Hexanone <10 ND 10 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 Isobutyl Alcohol <20 ND 20 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 Methacrylonitrile <10 ND 10 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 2-Butanone <10 ND 10 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 Methyl Iodide <2 ND 2 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 4-Methyl-2-Pentanone <10 ND 10 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 Propionitrile <20 ND 20 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 Vinyl acetate <10 ND 10 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 Calcium, Dissolved 77 77 0.1 mg/L Yes 6010B 8106 AUSTIN RD 5/14/2024 Magnesium, Dissolved 40 40 0.05 mg/L Yes 6010B 8106 AUSTIN RD 5/14/2024 Sodium, Dissolved 38 38 1 mg/L Yes 6010B 8106 AUSTIN RD 5/14/2024 Potassium, Dissolved 7.7 7.7 1 mg/L Yes 6010B 8106 AUSTIN RD 5/14/2024 Bicarbonate 250 250 5 mg/L Yes 310.1 8106 AUSTIN RD 5/14/2024 Carbonate <2.5 ND 2.5 mg/L No 310.1 8106 AUSTIN RD 5/14/2024 Chloride 39 39 0.5 mg/L Yes 300 8106 AUSTIN RD 5/14/2024 Nitrogen, Nitrate 3.8 3.8 0.1 mg/L Yes 300 8106 AUSTIN RD 5/14/2024 Sulfate 40 40 1 mg/L Yes 300 8106 AUSTIN RD 5/14/2024 Solids, Total Dissolved 540 A10 540 33 mg/L Yes 160.1 8106 AUSTIN RD 5/14/2024 Strontium 860 860 10 ug/L Yes 6010B 8106 AUSTIN RD 5/14/2024 1,2,3-Trichloropropane <0.005 ND 0.005 ug/L No 524.2 8106 AUSTIN RD 5/14/2024 Benzene <0.5 ND 0.5 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 Bromochloromethane <0.5 ND 0.5 ug/L No 8260B 8106 AUSTIN RD 5/14/2024 Bromodichloromethane <0.5 ND 0.5 ug/L No 8260B Page 30 of 659