The Environmental Protection Agency (EPA) has updated its delegation of authority to the State of West Virginia, allowing them to implement and enforce the National Emissions Standards for Hazardous Air Pollutants (NESHAP) and New Source Performance Standards (NSPS). This delegation was made official through a letter from the EPA on October 8, 2020, acknowledging West Virginia's authority, based on their updated rules. West Virginia has agreed to enforce the standards as per the conditions of the EPA's previous delegation. The updated rules include ending the use of certain exemptions, as per a court ruling in the Sierra Club vs. EPA case.
Simple Explanation
The EPA has given West Virginia the job of checking and enforcing clean air rules to keep the air safe, just like a teacher making sure everyone follows playground rules to keep things fair and fun.