It shall be unlawful for any person, firm, or corporation to permit the emission of any smoke or air contaminant in violation of applicable air quality standards adopted by the Federal Clean Air Act and the Michigan Department of Environmental Quality.
(a) Smoke. No person shall permit the emission of smoke from any source to a density greater than that density described as No. 1 on the Ringelmann Chart, except for smoke, the shade or appearance of which is equal to, but not darker than, No. 2 of the Ringelmann Chart for a period or periods aggregating four (4) minutes in any thirty (30) minutes.
For the purpose of grading the density of smoke, the Ringelmann Chart, as now published and used by the United States Bureau of Mines, and which is hereby made a part of this Zoning Ordinance, shall be the standard. However, the Umbrascope readings of smoke densities may be used when correlated with the Ringelmann Chart.
(b) Other Air Pollutants. No person shall operate or maintain, or cause to be operated or maintained, any process, furnace or combustion device for the burning of coal or other natural or synthetic fuels, without maintaining and operating (while using such process, furnace or combustion device) recognized and approved equipment, means, methods, devices or contrivances to reduce the quantity of gas-borne or air-borne solids or fumes emitted into the open air. Such equipment, means, methods, devices or contrivances shall be operated in conjunction with such process, furnace or combustion device so that the quantity of gas-borne or air-borne solids does not exceed twenty (20) grains per cubic foot of the carrying medium at a temperature of five hundred (500) degrees Fahrenheit.
For the purpose of determining the adequacy of such equipment, means, methods, devices or contrivances, such conditions shall be met when the percentage of excess air in the stack does not exceed fifty (50) percent at full load. This requirement shall be measured by the American Society of Mechanical Engineers Test Code for dust-separating apparatus. All other forms of dust, dirt and fly ash shall be completely eliminated insofar as escape or emission into the open air is concerned. The Zoning Administrator may require such additional data as is deemed necessary to show that adequate and approved provisions for the prevention and elimination of dust, dirt and fly ash have been made.
(c) Odors. Any condition or operation which results in the creation of odors of such intensity and character as to be detrimental to the health and welfare of the public or which interferes unreasonably with the comfort of the public shall be removed, stopped, or so modified as to remove the odor. Such odors shall be prohibited when perceptible at any point along the property line.