Any use established in any M, B and/or O district shall be operated in such a manner as to comply with applicable performance standards as hereinafter set forth governing noise, smoke, particulate matter, toxic or noxious matter, odors, fire and explosive hazards or vibration, glare or heat; and no use already established on the effective date of the Ordinance codified in this Title shall be altered or modified as to conflict with or further conflict with such applicable performance standards. Compliance standards shall be based upon a certification from a testing laboratory approved by the board of trustees.
A. Noise: At no point on the boundary of any zoning lot in any M, B or O district shall the sound intensity level for the operations on said lot exceed the decibel levels in the designated octave bands shown in the following table:
Octave Band | Maximum Permitted Sound Level (Decibels) | |
Frequency (Cycles
Per Second) | Along Residence District Boundaries | Along All Other District Boundaries |
Octave Band | Maximum Permitted Sound Level (Decibels) | |
Frequency (Cycles
Per Second) | Along Residence District Boundaries | Along All Other District Boundaries |
0 to 74 | 67 | 75 |
75 to 149 | 59 | 70 |
150 to 299 | 52 | 63 |
300 to 599 | 46 | 57 |
600 to 1,199 | 40 | 50 |
1,200 to 2,399 | 34 | 45 |
2,400 to 4,799 | 32 | 38 |
4,800 and over | 32 | 36 |
Sound levels shall be measured with a sound level meter and associated octave band filters manufactured according to standards prescribed by the American Standards Association. Measurements shall be made using the flat network of the sound meter. Impulsive type noises shall be subject to the performance standards prescribed, provided that such noises shall be capable of being accurately measured with such equipment. Noises capable of being so measured, for the purpose of this Chapter, shall be those noises which cause rapid fluctuations of the needle of the sound level meter with a variation of no more than plus or minus two (±2) decibels. Noises incapable of being so measured, such as those of an irregular and intermittent nature, shall be controlled so as not to become a nuisance to adjacent uses.
B. Smoke And Particulate Matter:
1. Nuisance Declared: The emission of smoke or particulate matter in such a manner or quantity as to endanger or be detrimental to the public health, safety, comfort or welfare is declared to be a public nuisance and shall be unlawful.
2. Grading Density: For the purpose of grading the density of smoke, the Ringelmann Chart published and used by the United States Bureau of Mines shall be employed. The emission of more than eight (8) smoke units per hour per stack is prohibited, including emission of smoke or particulate matter of a density greater than No. 2 on the Ringelmann Chart, except that during one one-hour period in each twenty four (24) hour day each stack may emit up to sixteen (16) smoke units when blowing soot or cleaning fires. Only during fire- cleaning periods, however, shall smoke of Ringelmann No. 3 be permitted and then for not more than three (3) minutes.
3. Total Emissions: The emission from all sources within any lot area of particulate matter containing more than ten percent (10%) by weight of particles having a particle diameter larger than forty four (44) microns is prohibited.
4. Dust And Other Pollutants: Dust and other types of air pollution, borne by the wind from such sources as storage areas, yards, roads and the like within lot boundaries shall be kept to a minimum by appropriate landscaping, paving, oiling, fencing or other acceptable means. Emission of particulate matter from such sources in excess of the weight limitations herein specified is prohibited.
C. Toxic Or Noxious Matter: No activity or operation shall cause, at any time, the discharge across the boundaries of the lot where it is located toxic or noxious matter in such concentrations as to be detrimental to or endanger the public health, safety, comfort or welfare or cause injury or damage to property or business.
D. Odors: The emission of odorous matter in such a quantity as to be readily detectable at any point along lot lines or as to produce a public nuisance or hazard beyond lot lines is prohibited.
E. Fire And Explosion Hazard:
1. Incombustible To Moderate Burning: The storage, utilization or manufacture of materials or products ranging from incombustible to moderate burning as determined by a closed cup flash point of not less than one hundred eighty seven degrees (187°) Fahrenheit is permitted subject to compliance with all other performance standards for the M, B and/or O districts.
2. Free Or Active To Intense Burning: The storage, utilization or manufacture of materials or products ranging from free or active burning to intense burning as determined for liquids by a closed cup flash point of less than one hundred eighty seven degrees (187°) Fahrenheit, but not less than one hundred five degrees (105°) Fahrenheit is permitted subject to compliance with all other performance standards for the M, B and/or O districts and provided the following conditions are met:
a. Said materials or products shall be stored, utilized or produced within completely enclosed buildings or structures having incombustible exterior walls; and
b. All such buildings or structures shall be set back at least forty feet (40') from lot lines, or in lieu thereof, all such buildings or structures shall be protected throughout by an automatic sprinkler system prescribed by the National Fire Protection Association, or if the materials, goods or products are liquids the protection thereof shall be in conformity with standards prescribed by the National Fire Protection Association.
3. Flammable Or Explosive Vapors: The utilization in manufacturing processes of materials which produce flammable or explosive vapors or gases as determined for liquids by a closed cup flash point of less than one hundred five degrees (105°) Fahrenheit shall be permitted in these districts provided:
a. That the final manufactured product does not itself have a closed cup flash point of less than one hundred eighty seven degrees (187°) Fahrenheit;
b. That the use and storage of such materials shall be in conformance with the standards prescribed by the National Fire Protection Association and the requirements of this Code and the State of Illinois;
c. That the storage of more than fifty thousand (50,000) gallons of materials or products having a closed cup flash point of less than one hundred five degrees (105°) Fahrenheit (exclusive of storage in underground tanks and exclusive of storage of finished products in original sealed containers) is prohibited; and
d. That the storage of more than one hundred thousand (100,000) gallons of materials or products having a closed cup flash point of less than one hundred eighty seven degrees (187°) Fahrenheit (exclusive of storage in underground tanks and exclusive of storage or finished products in original sealed containers) is prohibited.
F. Glare Or Heat: Any operation producing intense glare or heat shall be performed within a completely enclosed building in such a manner as not to create a public nuisance or hazard along lot lines. Exposed sources of light shall be shielded so as not to create a nuisance across lot lines.
All exterior lighting sources shall be shielded so that direct illumination is not visible to an observer standing on the property line of any residential district at a height of five feet (5') above the ground. This requirement does not apply to public street lighting.
Any time exterior lighting is installed or substantially modified in any manner, an exterior lighting plan shall be submitted to the enforcement officer for approval prior to the implementation of any changes.
G. Vibration: At no point on the boundary of any zoning lot in any M, B or O district shall the operations or activities on such lot cause earthborne vibrations at any time in excess of the limits set forth in column B of the table below. In addition, at no point on any zoning lot in any M, B and/or O district shall the operations or activities on such lot cause at any time earthborne vibrations at the boundary of any residential lot in excess of the limits set forth in column C of the table below.
COLUMN A Frequency
(Cycles Per Second) | COLUMN B1 Displacement (Inches) | COLUMN C1 Displacement (Inches) |
0 to 10 | 0.0008 | 0.0004 |
10 to 20 | 0.0005 | 0.0002 |
20 to 30 | 0.0002 | 0.0001 |
30 to 40 | 0.0002 | 0.0001 |
40 and over | 0.0001 | 0.0001 |
Note:
1. Steady state vibrations, for the purpose of this title which are continuous, or if in discrete pulses are more frequent than 100 per minute. Impact vibration, that is, discrete pulses which do not exceed 100 impulses per minute shall not cause in excess of twice the displacement stipulated.
(Ord. 90-O-16, 7-3-1990)