On October 8, 2020, the Environmental Protection Agency (EPA) sent the Commonwealth of Virginia (Virginia) a letter acknowledging that Virginia's delegation of authority to implement and enforce the National Emissions Standards for Hazardous Air Pollutants (NESHAPs) and New Source Performance Standards (NSPS) had been updated, as provided for under previously approved delegation mechanisms. To inform regulated facilities and the public, EPA is making available a copy of EPA's letter to Virginia through this notice.