No use otherwise allowed shall be permitted within any use district which does not conform to the following standards of use, occupancy and operation, which standards are hereby established as the minimum requirements to be maintained within the area.
(A) Smoke. 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.
(B) Method of measurement. 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 density may be used when correlated with the Ringlemann Chart.
(C) Dust, dirt and ash. No person, firm or corporation shall operate or cause to be operated, maintain 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 or contrivance to reduce the quantity of gas-borne or air-borne 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 gas-borne or air-borne solids shall not exceed 0.20
grains per cubic foot of the carrying medium at a temperature of 500º Fahrenheit, as measured by the A.S.M.E. Test Code for dust-separating apparatus.
(D) Storage. In all commercial and manufacturing districts, the open storage, not including display, of any equipment, vehicles and all materials, including wastes, shall be screened from public view, from a street and from adjoining properties by an enclosure consisting of a wall equal in height to the equipment, vehicles and all materials to be stored. In no instance shall the wall be less in height than 4 feet, 6 inches measured from the surface of the adjacent building flooring. In all residential districts, the storage of dismantled vehicles shall be within completely enclosed accessory structures.
(E) Glare and radioactive materials. Glare from any process (such as or similar to arc welding or acetylene torch cutting) which emits harmful rays shall be performed in such a manner as not to extend beyond the property line, and as not to create a public nuisance or hazard along lot lines. Radioactive materials and wastes, and including electromagnetic 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.
(F) Noise. At no point on the boundary of any nonindustrial district shall the sound pressure level of any operation exceed the described levels in the designated octave bands below:
Octave Band in Cycles per Second | Maximum Permitted Sound Level in Decibels |
Octave Band in Cycles per Second | Maximum Permitted Sound Level in Decibels |
0 to 75 | 72 |
75 to 150 | 67 |
150 to 300 | 59 |
300 to 600 | 52 |
600 to 1,200 | 46 |
1,200 to 2,400 | 40 |
2,400 to 4,800 | 34 |
Above 4,800 | 32 |
(G) Vibrations. No vibration which is discernable to the human sense of feeling shall be perceptible without instruments at any point beyond the lot line.
(H) Odor. The emission of noxious, odorous matter in such quantities as to be readily detectable at a point along any property line, when diluted in the ratio of 1 volume of odorous air to 4 or more volumes of clean air, so as to produce a public nuisance or hazard beyond lot lines is prohibited.
(I) Front yard parking. No part of any front yard shall be used for any accessory building, garage, or other structure, nor shall any motor vehicle be parked in any front yard except upon a regularly constructed driveway. In addition, on a corner lot no motor vehicle shall be parked in the side yard abutting public street except upon a regularly constructed driveway.
(J) Exterior lighting. All lighting for parking areas or for the external illumination of building or for the illumination of signs shall be directed away from and shall be shielded from adjacent districts and shall also be so arranged as to not adversely affect driver visibility on adjacent thoroughfares.
(K) Corner clearance. No fence, wall, shrubbery, sign or other obstruction to vision above a height of 2-1/2 feet from the established street grades shall be permitted within the triangular area formed at the intersection of any street right-of-way lines by a straight line drawn between the right-of-way lines at a distance along each line of 30 feet from their point of intersection.
(L) Outdoor storage and waste disposal.
(1) No flammable or explosive liquids, solids or gases shall be stored in bulk above ground; provided, however, that tanks or drums of fuel used for farm operations or directly connecting with energy devices, heating devices or appliances located on the same lot as the tanks or drums of fuel are excluded from this provision.
(2) All outdoor storage facilities for fuel, raw materials and products; and all fuel, all raw materials, and products stored outdoors shall be enclosed by a fence adequate to conceal the facilities from any adjacent properties.
(3) No materials or wastes shall be deposited upon a lot in a form or manner that may be transferred off the lots by natural forces or causes.
(4) All material or wastes which might cause fumes or dust or which constitute a fire hazard or which may be edible or otherwise be attractive to rodents or insects shall be stored outdoors only in closed containers.
(Ord. § 3.16, passed 5-22-1997)