Relating to authorizing the Department of Environmental Protection to promulgate a legislative rule relating to standards of performance for new stationary sources.

HB 4207 authorizes West Virginia's Department of Environmental Protection (DEP) to establish and enforce specific emission standards for new stationary sources, such as factories or power plants. The bill formalizes the DEP's existing authority to create a regulatory rule (identified as 45 CSR 16) that sets performance requirements for these facilities. This rule would directly affect new industrial construction projects by requiring compliance with updated environmental standards. The bill does not create new standards itself but legally permits the DEP to implement the previously proposed rule. The measure is procedural, focusing on regulatory authorization rather than altering environmental policy.