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Wednesday, 21 November 2012 14:19
EPA Proposes New Source Provisions for MATS
EPA has proposed revisions for new coal- and oil-fired electric utilities under the Mercury and Air Toxics Standards (MATS), calling for new, and generally relaxed, emission limits for mercury, particulate matter, acid gases and some individual metals. Additionally, the proposal would revise and clarify startup and shutdown provisions in MATS and in the related Utility New Source Performance Standards issued as a companion to MATS.

EPA has concluded that the new proposal will call for the same type of state-of-the-art control technologies that the previous MATS required. The agency also calculated that the proposal will not result in significant changes in cost, emission reductions or health benefits from the previous new source MATS. EPA originally issued the final MATS on December 16, 2011. Subsequently, the regulation was subject to several legal challenges.

On July 20, 2012, EPA agreed to reconsider certain elements of the new source provisions, including the data used to determine the standards and startup and shutdown provisions. This proposal is the result of that reconsideration. There will be a 30-day public comment period once the proposal is published in the Federal Register (an expedited publication schedule is expected).

EPA will hold a public hearing on December 18, 2012, if requested. A final rule is due by March 2013.

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