Regulation & law · 06/11/2007Updated: 10/17/2026 · 1 min read

EPA Approves Louisiana's 8-Hour Ozone Maintenance Plans for Beauregard, Grant, and St. Mary Parishes

The US Environmental Protection Agency (EPA) has proposed to approve revisions to Louisiana's State Implementation Plan, which includes 8-hour ozone maintenance plans for three parishes, ensuring the state meets the 8-hour ozone National Ambient Air Quality Standard through 2014.