The Environmental Protection Agency (EPA) has given final approval for revisions to parts of the California State Implementation Plan concerning emissions statements for the 2015 ozone national ambient air quality standards. This includes recognizing that certain areas in California, like Tuscan Buttes and San Diego County, now meet these requirements. The revised rules will become effective on April 17, 2025, replacing previous versions. The EPA also notes that this action is a federal endorsement of state-level decisions and does not impose additional federal requirements.
Simple Explanation
The EPA has approved changes to air pollution rules for some parts of California, meaning those areas are now following the new air quality rules just like they should. These new rules will start working on April 17, 2025, and it's like giving a big thumbs-up to California's decisions without adding any extra work from the federal side.