EPA vetoes Louisiana air plan over broad SSM terms

EPA has disapproved a Louisiana air quality plan over the states’ broad application of “work practice standards” to multiple source types as a replacement for automatic waivers during periods of startup, shutdown and malfunction (SSM), triggering a likely renewed legal fight over such exemptions. In a Dec. 7 decision , EPA disapproves the state implementation plan (SIP) revisions for the Baton Rouge ozone nonattainment area that the state put forward in response to EPA’s 2015 SIP Call rule. The agency...