The Environmental Protection Agency (EPA) is proposing to approve revisions to Pennsylvania's state implementation plan (SIP) for controlling air pollution. These revisions, submitted by the Pennsylvania Department of Environmental Protection, focus on implementing case-by-case reasonably available control technology (RACT) standards for nine major sources of volatile organic compounds (VOC) and nitrogen oxides (NOX) in Philadelphia County. These standards aim to meet requirements under the 2008 8-hour ozone national ambient air quality standards (NAAQS). The EPA is seeking public comments on this proposed rule as part of the approval process.
Simple Explanation
The EPA wants to make sure that factories in Philadelphia follow special rules to help clean the air from bad stuff like smog. They are asking people to share their thoughts on these rules before they decide to approve them.