(1) The design and installation of accessory or appurtenant parts and equipment of buildings and structures, and the uses of land connected with the emission of air contaminants;
(2) The operation or use of equipment and appliances emitting air contaminants;
(3) The conduct or carrying on of uses of land which cause the emission of air contaminants; and
(4) The abatement of an operation, activity or use causing air contamination.
(1958 Code, § 115.01) (Ord. 70-10, passed 3-16-1970)