Subject: Documentation of HMIWI Test Data Database

source performance standards (NSPS) and emission guidelines for hospital/medical/infectious waste incinerators (HMIWI). The EPA, under sections 111 and 129 of the Clean Air Act (CAA), is required to regulate emissions of nine pollutants from HMIWI, as well as opacity. The nine pollutants are hydrogen chloride (HCl), carbon monoxide (CO), lead (Pb), cadmium (Cd), mercury (Hg), particulate matter (PM), dioxins/furans (CDD/CDF), nitrogen oxides (NOX), and sulfur dioxide (SO2). On November 14, 1997, the Sierra Club and the Natural Resources Defense Council filed suit in the U.S. Court of Appeals for the District of Columbia Circuit challengin