Air Plan Approvals; TN; Prong 4-2010 NO2
The Environmental Protection Agency (EPA) is proposing to conditionally approve the visibility transport (prong 4) portions of revisions to the Tennessee State Implementation Plan (SIP), submitted by the Tennessee Department of Environment and Conservation (TDEC), addressing the Clean Air Act (CAA or Act) infrastructure SIP requirements for the 2010 1-hour Nitrogen Dioxide (NO2), 2010 1-hour Sulfur Dioxide (SO2), and 2012 annual Fine Particulate Matter (PM2.5) National Ambient Air Quality Standards (NAAQS). The CAA requires that each state adopt and submit a SIP for the implementation, maintenance, and enforcement of each NAAQS promulgated by EPA, commonly referred to as an ``infrastructure SIP.'' Specifically, EPA is proposing to conditionally approve the prong 4 portions of Tennessee's March 13, 2014, 2010 1-hour NO2 and 2010 1-hour SO2 infrastructure SIP submission and December 16, 2015, 2012 annual PM2.5 infrastructure SIP submission. All other applicable infrastructure requirements for these SIP submissions have been or will be addressed in separate rulemakings.
Financial Responsibility Requirements Under CERCLA § 108(b) for Classes of Facilities in the Hardrock Mining Industry; Extension of Comment Period
The Environmental Protection Agency (EPA) is extending the comment period for the proposed rule entitled ``Financial Responsibility Requirements under CERCLA Sec. 108(b) for Classes of Facilities in the Hardrock Mining Industry.'' That proposed rule was published on January 11, 2017, and the public comment period was scheduled to end on March 13, 2017. However, a number of parties have requested additional time to review the proposed rule and supporting information, and to develop and submit comments. Therefore, in response, EPA is extending the comment period an additional 120 days, so that comments are now due on or before July 11, 2017.