Following the April 2010 proposals, the Agency received more than 4,800 comments from businesses and communities, including a significant amount of information that industry had not provided prior to the proposals. Based on this input, the Agency made extensive revisions that resulted in dramatic cuts in the cost of implementation, while maintaining maximum public health benefits. Because the final standards significantly differ from the proposal, however, EPA believed further public review was required and announced it would reconsider the standards.
After the final standards were issued, multiple industry groups petitioned the Agency to delay the effective date of standards for major source boilers and commercial and industrial solid waste incinerators. In May 2011, EPA announced it would stay the effective date of those standards [See WIMS 5/16/11]. EPA did not stay the effective date of the standards for boilers located at area sources of air toxic emissions.