Sean Hoe Donahue
                    
                        Counsel of Record
 
                    
                
                
                    Donahue, Goldberg & Herzog
                        
                             1008 Pennsylvania Ave., SE
                        
                        Washington, DC 20003
                       
                        sean@donahuegoldberg.com
                     
                    Ph: 2022777085
                    Party name: Air Alliance Houston, American Academy of Pediatrics, Alliance of Nurses for Healthy Environments, American Lung Association, American Public Health Association, Chesapeake Climate Action Network, Citizens for Pennsylvania’s Future, Clean Air Council, Clean Wisconsin, Downwinders at Risk, Environmental Defense Fund, Environmental Integrity Project, Montana Environmental Information Center, National Resources Council of Maine, Natural Resources Defense Council, Ohio Environment Council, Physicians for Social Responsibility, and Sierra Club
                  
              
            
                
                    Elizabeth B. Prelogar
                    
                        Counsel of Record
 
                    
                
                
                    Solicitor General
                        
                             United States Department of Justice
                        
                             950 Pennsylvania Avenue, NW
                        
                        Washington, DC 20530-0001
                       
                        SUPREMECTBRIEFS@USDOJ.GOV
                     
                    Ph: 202-514-2217
                    Party name: United States
                  
              
            
                
                    Tracy Leigh Triplett
                    
                        Counsel of Record
 
                    
                
                
                    Office of the Massachusetts Attorney General
                        
                             One Ashburton Place, 18th Floor
                        
                        Boston, MA 02108
                       
                        tracy.triplett@mass.gov
                     
                    Ph: 617-963-2431
                    Party name: Commonwealth of Massachusetts