On Tuesday, March 13, 2012, U.S. EPA issued a No Action Assurance (NAA) Letter for the March 21, 2012 initial tune-up work practice standard deadlines codified in 40 CFR Part 63, Subpart JJJJJJ – National Emission Standard for Hazardous Air Pollutants for Industrial, Commercial, and Institutional Boilers Area Sources (Area Source Boiler MACT).
According to the EPA, they will not pursue enforcement actions for violations of the March 21, 2012 initial tune-up deadline.
On December 23, 2011, U.S. EPA published a proposed reconsideration of the Area Source Boiler MACT that would extend the initial tune-up requirement to March 21, 2013, providing facilities an additional year to achieve compliance. U.S. EPA has not yet finalized the proposed reconsideration of the Area Source Boiler MACT.
The NAA letter will remain in effect until October 1, 2012 or until the proposed reconsideration is published final, whichever occurs first.