April 29, 2021 Secretary Dionne Delli-Gatti Michael Abraczinskas, Director, Division of Air Quality North Carolina Department of Environmental Quality 217 West Jones Street Raleigh, NC 27603 Dear Secretary Delli-Gatti and Mr. Abraczinskas: On behalf of the below-listed community, health, and conservation groups, we are concerned that North Carolina is heading toward violating its obligations under