Electric power plants

Improvements for Heavy-Duty Engine and Vehicle Test Procedures, and Other Technical Amendments

The Environmental Protection Agency (EPA) is amending the test procedures for heavy-duty engines and vehicles to improve accuracy and reduce testing burden. EPA is also making other regulatory amendments concerning light-duty vehicles, heavy-duty vehicles, highway motorcycles, locomotives, marine engines, other nonroad engines and vehicles, and stationary engines. These amendments affect the certification procedures for exhaust emission standards and related requirements.

Publication Date: 
Tuesday, June 29, 2021 - 4:00am

Revised Cross-State Air Pollution Rule Update for the 2008 Ozone NAAQS

The U.S. Environmental Protection Agency (EPA) is taking this action to address interstate transport of ozone pollution under the ``good neighbor provision'' of the Clean Air Act (CAA). This final action is taken in response to the United States Court of Appeals for the District of Columbia Circuit's (D.C. Circuit) remand of the Cross- State Air Pollution Rule (CSAPR) Update in Wisconsin v. EPA on September 13, 2019.

Publication Date: 
Friday, April 30, 2021 - 4:00am