Revision of Source Category List for Standards Under Section 112(k) of the Clean Air Act; National Emission Standards for Hazardous Air Pollutants: Area Source Standards for Aluminum, Copper, and Other Nonferrous Foundries

EPA is revising the area source category list by changing the name of the "Secondary Aluminum Production" category to "Aluminum Foundries" and the "Nonferrous Foundries, not elsewhere classified (nec)" category to "Other Nonferrous Foundries." At the same time, EPA is issuing final national emission standards for the Aluminum Foundries, Copper Foundries, and Other Nonferrous Foundries area source categories. These final emission standards for new and existing sources reflect EPA's determination regarding the generally available control technologies or management practices (GACT) for each of the three area source categories.