Specialized definitions

Specialized definitions. Specialized definitions. The following definitions are applicable to the terms used in this subchapter: (1) “Existing indirect dischargers” means only the 2 iron blast furnace operations with discharges to POTWs prior to May 27, 1982. (2) “Ferromanganese blast furnace” means those blast furnaces which produce molten iron containing more than 50% manganese. (3) “Iron blast furnace” means all blast furnaces except ferromanganese blast furnaces.