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 7833 MW-04 8/7/2024 2,2-Dichloropropane <0.5 ND 0.5 ug/L No 8260B 7833 MW-04 8/7/2024 1,1,1,2-Tetrachloroethane <0.5 ND 0.5 ug/L No 8260B 7833 MW-04 8/7/2024 Tert-Amyl-Methyl Ether <0.5 ND 0.5 ug/L No 8260B 7833 MW-04 8/7/2024 Calcium, Dissolved 80 80 0.1 mg/L Yes 6010B 7833 MW-04 8/7/2024 Potassium, Dissolved 7.3 7.3 1 mg/L Yes 6010B 7833 MW-04 8/7/2024 Nitrogen, Nitrate 18 18 0.1 mg/L Yes 300. 7833 MW-04 8/7/2024 Strontium 860 860 10 ug/L Yes 6010B 7833 MW-04 8/7/2024 Sulfate 31 31 1 mg/L Yes 300. 7833 MW-04 8/7/2024 Solids, Total Dissolved 580 A10 580 33 mg/L Yes 160.1 7833 MW-04 8/7/2024 Carbon tetrachloride <0.5 ND 0.5 ug/L No 8260B 7833 MW-04 8/7/2024 Ethanol <250 ND 250 ug/L No 8260B 7833 MW-04 8/7/2024 Chloroform <0.5 ND 0.5 ug/L No 8260B 7833 MW-04 8/7/2024 Bromomethane <1 ND 1 ug/L No 8260B 7833 MW-04 8/7/2024 Chloromethane <0.5 ND 0.5 ug/L No 8260B 7833 MW-04 8/7/2024 Bromochloromethane <0.5 ND 0.5 ug/L No 8260B 7833 MW-04 8/7/2024 Chloroethane <0.5 ND 0.5 ug/L No 8260B 7833 MW-04 8/7/2024 Acetonitrile <10 ND 10 ug/L No 8260B 7833 MW-04 8/7/2024 Bromoform <0.5 ND 0.5 ug/L No 8260B 7833 MW-04 8/7/2024 Bromodichloromethane <0.5 ND 0.5 ug/L No 8260B 7833 MW-04 8/7/2024 tert-Butyl Alcohol <10 ND 10 ug/L No 8260B 7833 MW-04 8/7/2024 Trichlorofluoromethane <0.5 ND 0.5 ug/L No 8260B 7833 MW-04 8/7/2024 Isobutyl Alcohol <20 ND 20 ug/L No 8260B 7833 MW-04 8/7/2024 1,1,2-Trichloroethane <0.5 ND 0.5 ug/L No 8260B 7833 MW-04 8/7/2024 Trichloroethene 1.6 1.6 0.5 ug/L Yes 8260B 7833 MW-04 8/7/2024 Naphthalene <0.5 ND 0.5 ug/L No 8260B 7833 MW-04 8/7/2024 1,2-Dibromo-3-Chloropropane <1 ND 1 ug/L No 8260B 7833 MW-04 8/7/2024 Ethylbenzene <0.5 ND 0.5 ug/L No 8260B 7833 MW-04 8/7/2024 1,2-Dibromoethane <0.5 ND 0.5 ug/L No 8260B 7833 MW-04 8/7/2024 Acrolein <10 ND 10 ug/L No 8260B 7833 MW-04 8/7/2024 Propionitrile <20 ND 20 ug/L No 8260B 7833 MW-04 8/7/2024 Vinyl acetate <10 ND 10 ug/L No 8260B 7833 MW-04 8/7/2024 4-Methyl-2-Pentanone <10 ND 10 ug/L No 8260B 7833 MW-04 8/7/2024 Chlorobenzene <0.5 ND 0.5 ug/L No 8260B 7833 MW-04 8/7/2024 Trans-1,4-Dichloro-2-Butene <5 ND 5 ug/L No 8260B 7833 MW-04 8/7/2024 Methacrylonitrile <10 ND 10 ug/L No 8260B 7833 MW-04 8/7/2024 Tetrachloroethene <0.5 ND 0.5 ug/L No 8260B 7833 MW-04 8/7/2024 cis-1,2-Dichloroethene <0.5 ND 0.5 ug/L No 8260B 7833 MW-04 8/7/2024 1,1-Dichloropropene <0.5 ND 0.5 ug/L No 8260B 7833 MW-04 8/7/2024 2-Hexanone <10 ND 10 ug/L No 8260B 7833 MW-04 8/7/2024 Ethyl-t-Butyl Ether <0.5 ND 0.5 ug/L No 8260B 7833 MW-04 8/7/2024 Xylenes, Total <1 ND 1 ug/L No 8260B 7833 MW-04 8/7/2024 MTBE <0.5 ND 0.5 ug/L No 8260B 7833 MW-04 8/7/2024 cis-1,3-Dichloropropene <0.5 ND 0.5 ug/L No 8260B 7833 MW-04 8/7/2024 trans-1,3-Dichloropropene <0.5 ND 0.5 ug/L No 8260B 7833 MW-04 8/7/2024 Chloride 110 110 0.5 mg/L Yes 300. 7833 MW-04 8/7/2024 Carbonate <2.5 ND 2.5 mg/L No 310.1 7833 MW-04 8/7/2024 Magnesium, Dissolved 38 38 0.05 mg/L Yes 6010B 7833 MW-04 8/7/2024 Sodium, Dissolved 35 35 1 mg/L Yes 6010B 7833 MW-04 8/7/2024 Bicarbonate 200 200 5 mg/L Yes 310.1 7898 AUSTIN RD 1/31/2024 Benzene <0.5 ug/L 0.5 ug/L No 8260B 7898 AUSTIN RD 1/31/2024 Bromochloromethane <0.5 ug/L 0.5 ug/L No 8260B 7898 AUSTIN RD 1/31/2024 Bromodichloromethane <0.5 ug/L 0.5 ug/L No 8260B 7898 AUSTIN RD 1/31/2024 Bromoform <0.5 ug/L 0.5 ug/L No 8260B 7898 AUSTIN RD 1/31/2024 Bromomethane <1 ug/L 1 ug/L No 8260B 7898 AUSTIN RD 1/31/2024 Carbon tetrachloride <0.5 ug/L 0.5 ug/L No 8260B 7898 AUSTIN RD 1/31/2024 Dichlorodifluoromethane 0.18 J ug/L 0.5 ug/L Yes 8260B 7898 AUSTIN RD 1/31/2024 Tetrachloroethene 3.1 ug/L 0.5 ug/L Yes 8260B 7898 AUSTIN RD 1/31/2024 Trichloroethene 0.49 J ug/L 0.5 ug/L Yes 8260B 7898 AUSTIN RD 1/31/2024 Calcium, Dissolved 85 mg/L 0.1 mg/L Yes 6010B 7898 AUSTIN RD 1/31/2024 Magnesium, Dissolved 43 mg/L 0.05 mg/L Yes 6010B 7898 AUSTIN RD 1/31/2024 Sodium, Dissolved 40 mg/L 1 mg/L Yes 6010B 7898 AUSTIN RD 1/31/2024 Potassium, Dissolved 7.7 mg/L 1 mg/L Yes 6010B 7898 AUSTIN RD 1/31/2024 Bicarbonate 310 mg/L 5 mg/L Yes 310.1 7898 AUSTIN RD 1/31/2024 Chloride 72 mg/L 0.5 mg/L Yes 300 7898 AUSTIN RD 1/31/2024 Nitrogen, Nitrate 11 mg/L 0.1 mg/L Yes 300 7898 AUSTIN RD 1/31/2024 Sulfate 58 mg/L 1 mg/L Yes 300 7898 AUSTIN RD 1/31/2024 Solids, Total Dissolved 580 A10 mg/L 33 mg/L Yes 160.1 7898 AUSTIN RD 1/31/2024 Strontium 870 ug/L 10 ug/L Yes 6010B 7898 AUSTIN RD 1/31/2024 Chlorobenzene <0.5 ug/L 0.5 ug/L No 8260B 7898 AUSTIN RD 1/31/2024 Chloroethane <0.5 ug/L 0.5 ug/L No 8260B 7898 AUSTIN RD 1/31/2024 Chloroform <0.5 ug/L 0.5 ug/L No 8260B 7898 AUSTIN RD 1/31/2024 Chloromethane <0.5 ug/L 0.5 ug/L No 8260B 7898 AUSTIN RD 1/31/2024 Dibromochloromethane <0.5 ug/L 0.5 ug/L No 8260B 7898 AUSTIN RD 1/31/2024 1,2-Dibromo-3-Chloropropane <1 ug/L 1 ug/L No 8260B 7898 AUSTIN RD 1/31/2024 1,2-Dibromoethane <0.5 ug/L 0.5 ug/L No 8260B 7898 AUSTIN RD 1/31/2024 Dibromomethane <0.5 ug/L 0.5 ug/L No 8260B 7898 AUSTIN RD 1/31/2024 1,2-Dichlorobenzene <0.5 ug/L 0.5 ug/L No 8260B 7898 AUSTIN RD 1/31/2024 1,3-Dichlorobenzene <0.5 ug/L 0.5 ug/L No 8260B 7898 AUSTIN RD 1/31/2024 1,4-Dichlorobenzene <0.5 ug/L 0.5 ug/L No 8260B 7898 AUSTIN RD 1/31/2024 1,1-Dichloroethane <0.5 ug/L 0.5 ug/L No 8260B 7898 AUSTIN RD 1/31/2024 1,2-Dichloroethane <0.5 ug/L 0.5 ug/L No 8260B Page 20 of 659