No use otherwise allowed shall be permitted within any district which does not conform to the following standards of use, occupancy, and operations, which standards are hereby established as the minimum requirements to be maintained within the area.
(A) Smoke.
(1) It shall be unlawful for any person, firm or corporation to permit the emission of any smoke from any source whatever to a density greater than that density described as No. 1 of the Ringlemann Chart, provided that the following exceptions shall be permitted: Smoke, the shade or appearance of which is equal to but not darker than No. 2 of the Ringlemann Chart for a period, or periods, aggregating 4 minutes in any 30 minutes.
(2) For the purpose of grading the density of smoke, the Ringlemann Chart, as now published and used by the United States Bureau of Mines, which is hereby made a part of this chapter, shall be the standard. However, the Umbrascope readings of smoke densities may be used when correlated with Ringlemann’s Chart.
(B) Dust, dirt and fly ash.
(1) No person, firm or corporation shall operate or cause to be operated, maintained or cause to be maintained, any process for any purpose, or furnace or combustion device for the burning of coal or other natural or synthetic fuels, without maintaining and operating, while using the process or furnace or combustion device, recognized and approved equipment, means, method, device or contrivance to reduce the quantity of gasborne or airborne solids or fumes emitted into the open air, which is operated in conjunction with the process, furnace or combustion device so that the quantity of gasborne or airborne solids shall not exceed 0.20 grains per cubic foot of the carrying medium at a temperature of 500°F.
(2) For the purpose of determining the adequacy of such devices these conditions are to be conformed to when the percentage of excess air in the stack does not exceed 50% of full load. The foregoing requirement shall be measured by the A.S.M.E. 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 Building Inspector 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) Glare and radioactive materials. Glare from any process (such as or similar to arc welding, or acetylene torch cutting) which emits harmful ultraviolet rays shall be performed in such a manner as not to be seen from any point beyond the property line, and as not to create a public nuisance or hazard along lot lines. Radioactive materials and wastes, and including electro-magnetic radiation such as x-ray machine operation, shall not be emitted to exceed quantities established as safe by the U.S. Bureau of Standards, when measured at the property line.
(D) Fire and explosive hazards. The storage and handling of flammable liquids, liquefied petroleum, gases and explosives shall comply with the State Rules and Regulations as established by Public Act 1941, as amended, [M.C.L.A. §§ 29.1 et seq.], and shall conform with all codes and ordinances of the City of Marine City.
(E) Noise. Objectionable sounds, including those of an intermittent nature, shall be controlled so as not to become a nuisance to adjacent uses.
(F) Odors and fumes. Creation of offensive odors and fumes shall be prohibited.
(G) Wastes. No waste shall be discharged in the public sewer system which is dangerous to the public health and safety. The following standards shall apply at the point wastes are discharged into the public sewer.
(1) Acidity or alkalinity shall be neutralized within an average pH range of between 5-1/2 to 7-1/2 as a daily average on the volumetric basis, with a temporary variation of pH 4.50 to 10.0.
(2) Wastes shall contain no cyanides. Wastes shall contain no chlorinate solvents in excess of 0.1 ppm; no fluorides shall be in excess of 10 ppm; and shall contain no more than 5 ppm of hydrogen sulphide and shall contain not more than 10 ppm of sulphur dioxide and nitrates, and shall contain not more than 25 ppm of chromates.
(3) Wastes shall not contain any insoluble substance in excess of 10,000 ppm or exceed a daily average of 500 ppm or fail to pass number eight standard sieve or have a dimension greater than 1/2 inch.
(4) Wastes shall not have chlorine demand greater than 15 ppm.
(5) Wastes shall not contain phenols in excess of .05 ppm.
(6) Wastes shall not contain any grease or oil or any oily substance in excess of 100 ppm or exceed daily average of 25 ppm.
(Prior Code, App., § 1308)