Environmental Protection Agency November 24, 2015 – Federal Register Recent Federal Regulation Documents

The Environmental Protection Agency (EPA) is proposing to approve a State Implementation Plan (SIP) revision submitted by the State of Maine. This revision removes State Regulation Chapter 141 Conformity of General Federal Actions from the SIP.

The Environmental Protection Agency (EPA) is announcing a 60- day public comment period for the draft document titled, ``External Review Draft Integrated Science Assessment for Sulfur OxidesHealth Criteria'' (EPA/600/R-15/066). The draft document was prepared by the National Center for Environmental Assessment (NCEA) within the EPA's Office of Research and Development as part of the review of the primary (health-based) National Ambient Air Quality Standards (NAAQS) for sulfur dioxide (SO2). The Integrated Science Assessment (ISA), in conjunction with additional technical and policy assessments, provides the scientific basis for the EPA's decisions on the adequacy of the current NAAQS and the appropriateness of possible alternative standards. EPA intends to develop a separate ISA as part of an independent review for the secondary (welfare-based) NAAQS for oxides of nitrogen and sulfur. EPA is releasing this draft document to seek review by the Clean Air Scientific Advisory Committee (CASAC) and the public (meeting date and location to be specified in a separate Federal Register notice). This draft document is not final as described in EPA's information quality guidelines, and it does not represent, and should not be construed to represent, Agency policy or views. When revising the document, EPA will consider any public comments submitted during the 60-day comment period in response to this notice.