This action is a reconsideration of the promulgated NESHAP for existing stationary SI RICE with a site rating of less than or equal to 500 HP located at major sources, and existing stationary SI RICE of any site rating located at area sources. EPA estimates that complying with the reconsidered national emission standards for hazardous air pollutants (NESHAP) for stationary spark-ignition (SI) reciprocating internal combustion engines (RICE) will have an annualized cost of approximately $115 million per year (2009 or 2010 dollars) in the year of full implementation of the rule (2013). The total annualized costs of the reconsidered rule are 55% less than those for the final SI RICE NESHAP promulgated in 2010. Using these costs, EPA estimates in its economic impact analysis that the NESHAP will have limited impacts on the industries affected and their consumers. Using sales data obtained for affected small entities in an analysis of the impacts of this rule on small entities, EPA expects that the NESHAP will not result in a SISNOSE (significant economic impacts for a substantial number of small entities), a result consistent with the conclusion for the final SI RICE NESHAP issued in 2010. EPA also does not expect significant adverse energy impacts based on Executive Order 13211, an Executive Order that requires analysis of energy impacts for rules such as this one that are economically significant under Executive Order 12866.

"January 2013". Project Officer: John L. Sorrels. Final. Includes bibliographical references. "EPA-452/R-13-002".