Standards of Performance for New Stationary Sources and Emission Guidelines for Existing Sources: Hospital/Medical/Infectious Waste Incinerators

Riepilogo

On September 15, 1997, EPA adopted new source performance standards (NSPS) and emission guidelines (EG) for hospital/medical/ infectious waste incinerators (HMIWI). The NSPS and EG were established under sections 111 and 129 of the Clean Air Act (CAA or Act). The Sierra Club and the Natural Resources Defense Council (Sierra Club) filed suit in the U.S. Court of Appeals for the District of Columbia Circuit (the Court) challenging EPA's methodology for adopting the regulations. On March 2, 1999, the Court remanded the rule to EPA for further explanation of the Agency's reasoning in determining the minimum regulatory "floors" for new and existing HMIWI. The Court did not vacate the regulations, so the NSPS and EG remain in effect and were fully implemented by September 2002. On February 6, 2007, EPA published a proposed response to the Court's remand and a proposed response to the CAA section 129(a)(5) requirement to review the NSPS and EG every 5 years. However, following recent court decisions and receipt of public comments regarding that proposal, we chose to re-assess our response to the Court's remand. Therefore, this action provides the results of EPA's reassessment in the form