CENTURY ALUMINUM SEBREE LLC
                    CENTURY ALUMINUM CO
                    Facility Summary
                        9404 STATE RT 2096, ROBARDS, KY, 42452 (HENDERSON)
                                In 2022, this facility made toxic releases of:
                                                                            - Concern to the air
                                                                                                                                                                                                                                                                - Onsite air release of Clean Air Act chemicals
                                                                                                                                                    - Onsite release Persistent bioaccumulative toxic substance (PBTs)
                                                                                                                - Onsite release of known carcinogens
                                                                                                                                                                                    
                                    This facility reported the following greenhouse gas releases for 2022:
                                                                                            - 32.50 metric tons of Methane (CH4)
                                                                                            - 38.74 metric tons of Nitrous Oxide (N2O)
                                                                                            - 348,975.30 metric tons of Carbon Dioxide (CO2)
                                                                                            - 185,811.79 metric tons of PFCs (PFC)
                                                                                                                        18-month enforcement and compliance history summary for this facility:
                                        
                                                                                                                        Facility: Significant Violation
                                                                
                                                                Clean Air Act: No Violation Identified
                                                                Clean Water Act: No Violation Identified
                                                                Resource Conservation and Recovery Act : Significant Noncomplier
                                                                                                                                    Total Penalties: $6,000
                                                                                                                                                                                                    Last Penalty: 01/06/2023
                                                                                                                        2022 Toxic Substance Releases
        
        | Substance | Total (lbs)  | 
                            Air (lbs)  | 
                            Water (lbs)  | 
                            Land (lbs)  | 
                            UnInj (lbs)  | 
                            Offsite (lbs)  | 
                        
|---|---|---|---|---|---|---|
| 
                            CARBONYL SULFIDE
            
             CASRN: 463-58-1  | 
                275,632.00 | 275,632.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| 
             
 This substance is a clean air act chemical. 
    (Source: U.S. EPA Toxics Release Inventory (TRI))
 
         | 
    ||||||
| Substance | Total | Air | Water | Land | UnInj | Offsite | 
| 
                            HYDROFLUORIC ACID
            
             CASRN: 7664-39-3  | 
                154,851.00 | 154,851.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| 
             
 This substance is an asthmagen. 
    (Source: Association of Occupational and Environmental Clinics (AOEC))
 
    
    
            
 This substance is a clean air act chemical. 
    (Source: U.S. EPA Toxics Release Inventory (TRI))
 
         | 
    ||||||
| Substance | Total | Air | Water | Land | UnInj | Offsite | 
| 
                            NAPHTHALENE
            
             CASRN: 91-20-3  | 
                85,202.00 | 85,202.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| 
             
 This substance is a carcinogen. 
    (Source: U.S. Environmental Protection Agency Toxics Release Inventory Basis of OSHA Carcinogens)
 
    
    
    
    
    
            
 This substance is an endocrine disruptor. 
    (Source: TEDX (The Endocrine Disruption eXchange))
 
    
            
 This substance is an asthmagen. 
    (Source: Association of Occupational and Environmental Clinics (AOEC))
 
    
    
            
 This substance is a clean air act chemical. 
    (Source: U.S. EPA Toxics Release Inventory (TRI))
 
         | 
    ||||||
| Substance | Total | Air | Water | Land | UnInj | Offsite | 
| 
                            POLYCYCLIC AROMATIC COMPOUNDS (TRI CATEGORY)
            
             CASRN: N590  | 
                17,727.00 | 17,727.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| 
             
 This is a persistent bioaccumulative toxic substance (PBTs). 
    (Source: U.S. EPA Toxics Release Inventory (TRI))
 
    
            
 This substance is a carcinogen. 
    (Source: U.S. Environmental Protection Agency Toxics Release Inventory Basis of OSHA Carcinogens)
 
    
    
    
    
    
    
    
    
            
 This substance is a clean air act chemical. 
    (Source: U.S. EPA Toxics Release Inventory (TRI))
 
         | 
    ||||||
| Substance | Total | Air | Water | Land | UnInj | Offsite | 
| 
                            MANGANESE COMPOUNDS
            
             CASRN: N450  | 
                4,789.14 | 4,649.74 | 108.59 | 30.81 | 0.00 | 0.00 | 
| 
             
 This substance is a clean air act chemical. 
    (Source: U.S. EPA Toxics Release Inventory (TRI))
 
         | 
    ||||||
| Substance | Total | Air | Water | Land | UnInj | Offsite | 
| 
                            MERCURY COMPOUNDS
            
             CASRN: N495  | 
                939.08 | 917.51 | 21.31 | 0.26 | 0.00 | 0.00 | 
| 
             
 This substance is a carcinogen. 
    (Source: U.S. Environmental Protection Agency Toxics Release Inventory Basis of OSHA Carcinogens)
 
    
    
    
    
    
    
    
    
            
 This substance is a clean air act chemical. 
    (Source: U.S. EPA Toxics Release Inventory (TRI))
 
         | 
    ||||||
| Substance | Total | Air | Water | Land | UnInj | Offsite | 
| 
                            CHROMIUM
            
             CASRN: 7440-47-3  | 
                927.20 | 922.46 | 4.56 | 0.18 | 0.00 | 0.00 | 
| 
             
 This substance is an endocrine disruptor. 
    (Source: TEDX (The Endocrine Disruption eXchange))
 
    
            
 This substance is an asthmagen. 
    (Source: Association of Occupational and Environmental Clinics (AOEC))
 
    
    
            
 This substance is a clean air act chemical. 
    (Source: U.S. EPA Toxics Release Inventory (TRI))
 
         | 
    ||||||
| Substance | Total | Air | Water | Land | UnInj | Offsite | 
| 
                            BENZO[G,H,I]PERYLENE
            
             CASRN: 191-24-2  | 
                302.00 | 302.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| 
             
 This is a persistent bioaccumulative toxic substance (PBTs). 
    (Source: U.S. EPA Toxics Release Inventory (TRI))
 
    
    
    
    
    
    
    
    
    
            
 This substance is a clean air act chemical. 
    (Source: U.S. EPA Toxics Release Inventory (TRI))
 
         | 
    ||||||
| Substance | Total | Air | Water | Land | UnInj | Offsite | 
| 
                            LEAD COMPOUNDS
            
             CASRN: N420  | 
                227.92 | 222.81 | 4.85 | 0.26 | 0.00 | 0.00 | 
| 
             
 This is a persistent bioaccumulative toxic substance (PBTs). 
    (Source: U.S. EPA Toxics Release Inventory (TRI))
 
    
            
 This substance is a carcinogen. 
    (Source: U.S. Environmental Protection Agency Toxics Release Inventory Basis of OSHA Carcinogens)
 
    
    
    
    
            
 This substance is a neurotoxin. 
    (Source: Grandjean P, Landrigan PJ. Neurobehavioural effects of developmental toxicity)
 
    
    
    
    
            
 This substance is a clean air act chemical. 
    (Source: U.S. EPA Toxics Release Inventory (TRI))
 
         | 
    ||||||
| Substance | Total | Air | Water | Land | UnInj | Offsite | 
| 
                            COPPER
            
             CASRN: 7440-50-8  | 
                9.86 | 0.94 | 8.66 | 0.26 | 0.00 | 0.00 | 
| 
             
 This substance is an asthmagen. 
    (Source: Association of Occupational and Environmental Clinics (AOEC))
 
    
    
             | 
    ||||||
| Substance | Total | Air | Water | Land | UnInj | Offsite |