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The Environmental Protection Agency (EPA) is proposing to approve revisions to Pennsylvania's state implementation plan (SIP) to implement reasonably available control technology (RACT) for major sources of nitrogen oxides (NOX) and volatile organic compounds (VOC). These changes are aimed at reducing ozone pollution under the 1997 and 2008 national air quality standards. Pennsylvania submitted these revisions to establish RACT for eight specific sources out of the nine initially proposed. This proposal is part of efforts to ensure cleaner air and better public health by meeting federal Clean Air Act requirements.

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.