The Environmental Protection Agency (EPA) has approved a revision to Pennsylvania's State Implementation Plan (SIP) for maintaining air quality standards for ozone in the Harrisburg-Lebanon-Carlisle area. This revision helps ensure the area continues to meet the 1997 8-hour ozone standards through 2027. The EPA found that Pennsylvania's submission satisfied legal requirements, even after discovering a minor computational error in emission data that did not affect the decision. This approval makes certain air quality maintenance commitments enforceable under federal law.
Simple Explanation
The EPA said yes to Pennsylvania's plan to keep the air clean and healthy in some cities by sticking to rules about ozone, which is a type of pollution. This means Pennsylvania promised to make sure the air stays good to breathe, and now the EPA is helping to make this a rule everyone has to follow.