As used in this chapter:
(a) "Dust" means gas-borne and air-borne particles larger than one micron in mean diameter.
(b) "Dust separating equipment" means any device for separating dust from the gas medium in which it is carried.
(c) "Fuel burning equipment" means any furnace, incinerator, refuse burning equipment, boiler, apparatus, device, mechanism, stack or structure used in the process of burning fuel or combustible material, except cooking stoves or ranges, service water heaters, room or space heaters that use gas, kerosene or gasoline as fuel, and such equipment as is covered by this chapter.
(d) "Fumes" means gases or vapors that are of such character as to create an unclean, destructive, offensive or unhealthful condition.
(e) "Internal combustion engine" means an engine in which combustion of a gaseous, liquid or pulverized solid fuel takes place within one or more cylinders.
(f) "Open fire" means any fire wherein the products of combustion are emitted into the open air and are not directed thereto through a stack or chimney.
(g) "Ringelmann Smoke Chart" means the Ringelmann Chart, with instructions for use, as published by the United States Bureau of Mines.
(h) "Smoke" means small gas-borne and air-borne particles consisting essentially of carbonaceous material in sufficient number to be observable.
(g) "Smoke Regulation Officer" means the Building Superintendent or his or her authorized assistant or deputy.
(i) "Soot" means agglomerated particles consisting essentially of carbonaceous material.
(k) "Stack" or "chimney" means a flue, conduit or opening arranged for emitting air containing dust and gases containing dust or smoke into the open air.
(1979 Code Sec. 15.20.010)