1. Any new industrial use established in I-1 and I-2 districts after the effective date of the ordinance codified in this title, 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, as set forth in this chapter for the district in which such use shall be located. No use already established on the effective date of said ordinance shall be so altered or modified as to conflict with, or further conflict with, the applicable performance standards established hereinafter for the district in which such use is located.
2. Certification from an engineer, registered with the state, or scientific testing laboratory approved by the county board, indicating that the use of the land and all processing either does or will comply with the applicable performance standards, shall accompany application for a zoning certificate.

(Res. 1-1 §5 (S) (1), November 16, 1982)

1. Sound levels shall be measured with a sound level meter and associated octave band filter manufactured according to standards prescribed by the American Standards Association. Measurements shall be made using the flat network of the sound level meter. Impulsive-type noises shall be subject to the performance standards hereinafter 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 title, 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 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.
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:
   
   

   Octave Band Frequency (cycles per second)	Along Residence District Boundaries	Along Business District Boundaries
   0 to 75	72	79
   75 to 150	67	74
   150 to 300	59	66
   300 to 600	52	59
   600 to 1,200	46	53
   1,200 to 2,400	40	47
   2,400 to 4,800	34	41
   over 4,800	32	39

(Res. 1-1 §5(S) (2), November 16, 1982)

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-component measuring instrument approved by the zoning administrator, and shall be expressed as displacement in inches.
   
   

   Frequency (cycles per second)	Maximum Permitted Displacement along Residence District Boundaries (Inches)
   0 to 10	.0008
   10 to 20	.0005
   20 to 30	.0002
   30 to 40	.0002
   40 and over	.0001

(Res. 1-1 §5(S) (3), November 16, 1982)

1. Any use already established on the effective date of the ordinance codified in this chapter 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 in Sections 17.34.050 and 17.34.060 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. In addition to the performance standards specified in the sections cited in subsection A of this section, the emission of smoke or particulate matter in such manner or quantity as to be detrimental to or endanger the public health, safety, comfort, or welfare is declared to be a public nuisance and shall henceforth be unlawful.
3. 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 equal to No. 2 on the Ringelmann Chart is prohibited at all times, except as otherwise provided hereinafter.
4. The emission, from all sources within any lot area, of particulate matter containing more than five (5) percent by weight of particles having a particle diameter larger than forty-four (44) microns is prohibited.
5. 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 in Sections 17.34.050 and 17.34.060 for the district in which such use shall be located is prohibited.

(Res. 1-1 §5 (S) (4) (a)—(e), November 16, 1982)

In the I-1 district, the following additional regulations apply:

1. 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-hour period, each stack shall be permitted up to twenty (20) smoke units (not to exceed Ringelmann No. 2) in thirty (30) minutes for soot blowing and fire cleaning. Only during fire cleaning shall smoke of Ringelmann No. 3 be permitted, and then for not more than six (6) minutes.
2. The rate of particulate matter emission from all sources within the boundaries of any lot shall not exceed a net figure of three pounds 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*
   Height of Emission Above Grade (feet)	Correction (pounds per hour per acre)
   50	0.0
   100	0.5
   150	0.8
   200	1.2
   300	2.0
   400	4.0

   *Interpolate for intermediate values not shown in table.
3. 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 1, 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 2, to obtain the total net rate of emission from all sources of emission within the boundaries of the lot; such total shall not exceed three pounds per acre of lot area during any one hour.

(Res. 1-1 §5 (S) (4) (f), November 16, 1982)

In the I-2 district, the following additional regulations shall apply:

1. The emission of more than sixteen (16) smoke units per stack in any thirty (30) minute period is prohibited, including smoke in excess of Ringelmann 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. 2) in thirty (30) minutes for soot blowing and cleaning fires. Only during fire cleaning shall smoke of Ringelmann No. 3 be permitted, and then for not more than eight (8) minutes.
2. The rate of particulate matter emission from all sources within the boundaries of any lot shall not exceed a net figure of three pounds 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*
   Height of Emission Above Grade (feet)	Correction (pounds per hour per acne)
   50	0.0
   100	0.5
   150	1.5
   200	2.4
   300	4.0
   400	8.0

   *Interpolate for intermediate values not shown in table.
3. 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 1 of this section, 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 2 of this section to obtain the total net rate of emission from all sources of emission within the boundaries of the lot; such total shall not exceed eight pounds per acre of lot area during any one hour.

(Res. 1-1 §5 (S) (4) (g), November 16, 1982)

No activity or operation shall cause, at any time, the discharge of toxic or noxious matter across lot lines in such concentration as to be detrimental to or endanger the public health, safety, comfort, or welfare or cause injury or damage to property or business. Determination of such adverse effects shall be made by the zoning administrator or duly appointed agent.

(Res. 1-1 §5 (S) (5), November 16, 1982)

1. The emission of odorous matter in such manner or quantity as to be detrimental to or endanger the public health, safety, comfort or welfare is declared to be a public nuisance and shall henceforth be unlawful.
2. No activity or operation shall cause, at any time, the discharge of odorous matter in such concentration as to be detectable without the use of instruments at any point along lot lines.

(Res. 1-1 §5 (S) (6), November 16, 1982)

1. 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.
2. In the I-1 district, the following additional regulations shall apply:
   1. The storage, utilization or manufacture of solid materials or products ranging from incombustible to moderate burning is permitted.
   2. 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 Sangamon county board, and such storage shall have fifty (50) feet clearance from all property lines.
   3. The storage and utilization of flammable liquids or materials which produce flammable or explosive vapors or gases shall be permitted in accordance with rules and regulations, Department of Safety, state of Illinois.
3. In the I-2 district, the following additional regulations shall apply:
   1. The storage, utilization or manufacture of solid materials, ranging from incombustible to intense burning is permitted, subject to applicable rules and regulations of the county board of supervisors.
   2. The storage and utilization of flammable liquids, or materials which produce flammable or explosive vapors or gases, shall be permitted in accordance with the regulations of the Department of Safety of the state of Illinois.

(Res. 1-1 §5 (S) (7), November 16, 1982)

Any operation producing intense glare or heat shall be performed within a completely enclosed building in such 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. Determination of the nuisance factor in regard to glare or heat intensity shall be made by the zoning administrator or duly appointed agent.

(Res. 1-1 §5 (S) (8), November 16, 1982)