In this Article, unless the context otherwise requires, the expression "Department" means the Department of Environmental Quality; "Secretary" means the Secretary of Environmental Quality. (1925, c. 122, s. 3; 1973, c. 1262, ss. 28, 86; 1977, c. 771, s. 4; 1989, c. 727, s. 218(47); 1997-443, s. 11A.119(a); 2015-241, ss. 14.30(u), (v).)