(A) General: Any use established in M-1, M-1-1 and M-2 Districts after the effective date hereof shall be so operated as to comply with the performance standards governing: 1) noise; 2) vibration; 3) smoke and particulate matter; 4) toxic and noxious matter; 5) odorous matter; 6) fire and explosive hazards; and 7) glare and heat, set forth hereinafter for the district in which such use shall be located. No use already established shall conflict with, or further conflict with, the applicable performance standards established hereinafter for the district in which such use is located.
(B) Noise; M-1, M-1-1 And M-2 Districts:
1. Should levels shall be measured with a sound level meter and associated octave band filter manufactured according to standards prescribed by the American Standards Association. The flat network and the slow meter response shall be used. Sounds of short duration, as from forge hammers, punch presses and the like, which cannot be measured accurately with the sound level meter, shall be measured with the impact noise analyzer as manufactured by the General Radio Company or its equivalent in order to determine the peak value of the impact. For sounds so measured, the peak values shall not exceed by six (6) decibels the values given in subsection (B)2 below.
2. At no point on the boundary of a residence or business district shall the sound pressure level of any operation or plant (other than background noises not directly under the control of the manufacturer) exceed the decibel limits in the octave bands designated below:
(C) Vibrations; M-1, M-1-1 And M-2 Districts:
1. Vibrations within a district shall be controlled so as not to become a nuisance to adjacent uses.
2. No industrial operation or activity (except those not under the direct control of the manufacturer) shall cause at any time ground transmitted vibrations in excess of the limits set forth below. Vibrations shall be measured at any point along a residence district boundary line with a three (3) component measuring instrument approved by the Zoning Enforcement Officer, and shall be expressed as displacement in inches.
(D) Smoke And Particulate Matter; M-1, M-1-1 And M-2 Districts:
1. Any use already established on the effective date hereof shall be permitted to be altered, enlarged, expanded or modified; provided, that new sources of smoke and/or particulate matter conform to the performance standards established hereinafter for the district in which such use is located. The total emission weight of particulate matter from all sources within the boundaries of the lot shall not exceed the net amount permitted in the district in which the use is located after such alteration, enlargement, expansion or modification.
2. 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 smoke or particulate matter of a density greater than No. 2 on the Ringelmann Chart is prohibited at all times, except as otherwise provided hereinafter.
3. The emission, from all sources within any lot area, of particulate matter containing more than five percent (5%) by weight of particles having a particle diameter larger than forty four (44) microns is prohibited.
4. Dust and other types of air pollution, borne by the wind from such sources as storage areas, yards, roads and so forth within lot boundaries, shall be kept to a minimum by appropriate landscaping, paving, oiling or other acceptable means. Emission of particulate matter from such sources in excess of the weight limitations specified hereinafter for the district in which such use shall be located is prohibited.
5. In the M-1 and M-1-1 Districts the following additional regulations shall apply:
(a) The emission of more than twelve (12) smoke units per stack in any thirty (30) minute period is prohibited, including smoke in excess of Ringelmann No. 2. However, once during any three (3) hour period, each stack shall be permitted up to twenty (20) smoke units (not to exceed Ringelmann No. 3) in thirty (30) minutes for soot blowing and fire cleaning.
(b) The rate of particulate matter emission from all sources within the boundaries of any lot shall not exceed a net figure of one pound per acre of lot area during any one hour period, after deducting from the gross hourly emission per acre the correction factor set forth in the following table:
Allowance for Height of Emission*
* Interpolate for intermediate values not shown in table.
Determination of the total net rate of emission of particulate matter within the boundaries of any lot shall be made as follows:
(1) Determine the maximum emission in pounds per hour from each source of emission and divide this figure by the number of acres of lot area; thereby obtaining the gross hourly rate of emission in pounds per acre.
(2) From each gross hourly rate of emission derived in subsection (D)5(b)(1) above, deduct the correction factor (interpolating as required) for height of emission set forth in the table; thereby obtaining the net rate of emission in pounds per acre per hour from each source of emission.
(3) Add together the individual net rates of emission derived in subsection (D)5(b)(2) above, to obtain the total net rate of emission from all sources of emission within the boundaries of the lot; such total shall not exceed one pound per acre of lot area during any one hour.
6. In the M-2 District the following additional regulations shall apply:
(a) The emission of more than sixteen (16) smoke units per stack in any thirty (30) minute period is prohibited, including smoke in excess of Ringlemann No. 2. However, once during any two (2) hour period, each stack shall be permitted up to twenty four (24) smoke units (not to exceed Ringelmann No. 3) in thirty (30) minutes for soot blowing and cleaning fires.
(b) The rate of particulate matter emission from all sources within the boundaries of any lot shall not exceed a net figure of four (4) pounds per acre during any one hour, after deducting from the gross hourly emission per acre the correct factor set forth in the following table:
Allowance for Height of Emission*
* Interpolate for intermediate values not shown in table.
Determination of the total net rate of emission of particulate matter within the boundaries of any lot shall be made as follows:
(1) Determine the maximum emission in pounds per hour from each source of emission and divide this figure by the number of acres of lot area; thereby obtaining the gross hourly rate of emission in pounds per acre.
(2) From each gross hourly rate of emission derived in subsection (D)6(b)(1) above, deduct the correction factor (interpolating as required) for height of emission set forth in the table; thereby obtaining the net rate of emission in pounds per acre per hour from each source of emission.
(3) Add together the individual net rate of emission derived in subsection (D)6(b)(2) above, to obtain the total net rate of emission from all sources of emission within the boundaries of the lot; such total shall not exceed four (4) pounds per acre of lot area during any one hour.
(E) Toxic And Noxious Matter; M-1, M-1-1 And M-2 Districts: No activity or operation shall cause, at any time, the discharge of toxic or noxious matter across lot lines 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. In no case shall the concentration of toxic materials released across lot lines exceed ten percent (10%) the value permitted an industrial worker. (Ref: Threshold limit values for 1960, American Conference of Governmental Industrial Hygienists, A.M.A. Archives of Environmental Health, 1, 140 (1960).)
1. M-1 And M-1-1 Districts: The emission of odorous matter from any source shall be controlled so as to be below the odor threshold value when measured at a lot line.
2. M-2 District: The emission of odorous matter from any source shall be controlled so as to be no more than four (4) times the odor threshold value when measured at a district boundary line.
(G) Fire And Explosive Hazard; M-1, M-1-1 And M-2 Districts:
1. Activities involving the manufacture of materials or products which decompose by detonation are permitted only in the M-2 District, and then only when specifically licensed by the corporate authorities after a public hearing conducted by the Plan Commission.
2. The manufacture, utilization or storage of pyrophoric and explosive dusts shall be in accordance with, the safety codes. of the National Fire Protection Association. Such dusts include, but are not limited to: Aluminum bronze and magnesium powder, powdered coal, powdered plastics, flour and feed, spices, starches, sugar, cocoa, sulphur, grain (storage) and wood flour.
3. In the M-1 and M-1-1 Districts the following additional regulations shall apply:
(a) The storage, utilization or manufacture of solid materials or products ranging from incombustible to moderate burning is permitted.
(b) The storage, utilization or manufacture of solid materials or products ranging from free or active burning to intense burning is permitted, provided the following condition is met:
Said materials shall be stored, utilized or manufactured within completely enclosed buildings having incombustible exterior walls, or protected throughout by an automatic fire extinguishing system; or said materials may be stored outdoors in conformance with the regulations of the Village, and such storage shall have fifty feet (50') clearance from all property lines.
(c) The storage and utilization of flammable liquids or materials* which produce flammable or explosive vapors or gases shall be permitted in accordance with the following table:
Total Capacity Of Flammable Materials Permitted, Gallons
* When flammable gases are stored and utilized and measured in cubic feet, the quantity in cubic feet (at S.T.P.) permitted shall not exceed three hundred (300) times the quantities as listed above.
4. In the M-2 District the following additional regulations shall apply:
(a) The storage, utilization or manufacture of solid materials ranging from incombustible to intense burning are permitted, subject to applicable rules and regulations of the Village.
(b) The storage and utilization of flammable liquids or materials* which produce flammable or explosive vapors or gases, shall be permitted in accordance with the following table:
Total Capacity Of Flammable Materials Permitted, Gallons
* When flammable gases are stored and utilized and measured in cubic feet, the quantity in cubic feet (at S.T.P.) permitted shall not exceed three hundred (300) times the quantities as listed above.
(H) Glare And Heat; M-1, M-1-1 And M-2 Districts: 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. In no case shall illumination exceeding one-tenth (0.1) foot-candle be permitted in a residential district which has its source in a manufacturing district. (Ord. 61-56, 12-1961)