The following words and terms, when used in this part, have the following meanings, unless the context clearly indicates otherwise:
Central office-One of the offices or bureaus of the Department with responsibility for Statewide administration of a particular Department function.
Department-The Department of Environmental Protection of this Commonwealth.
EHB-The Environmental Hearing Board.
EPA-The United States Environmental Protection Agency.
EQB-The Environmental Quality Board.
Regional office-One of the offices of the Department with responsibility for regional administration of various Department functions.
Secretary-The Secretary of the Department.
25 Pa. Code § 1.1