City of Trenton, MO Part 2 Manufacturing/Processing Performance Standards

Section 400.590 through Section 400.610. (Reserved)

Section 400.620 Smoke.

[R.O. 2011 §400.620; Ord. No. 01-10 §1(12.07), 4-9-2001; Ord. No. 04-25 §1, 7-26-2004]

A. For the purpose of determining the density of equivalent opacity of smoke, the Ringlemann Chart, as adopted and published by the United States Department of Interior, Bureau of Mines Information Circular 8833, May 1967, shall be used. The Ringlemann number referred to in this Section refers to the number of the area of the Ringlemann Chart that coincides most nearly with the visual density of equivalent opacity of the emission of smoke observed. For example, a reading of Ringlemann No. 1 indicates a twenty percent (20%) density of the smoke observed.

B. All measurements shall be taken at the point of emission of the smoke.

C. In the "B-1", "B-2", "MU", "B-3", "B-4" and all "PUD" Districts, no business or residence may emit from a vent, stack, chimney or combustion process any smoke that exceeds State or Federal regulatory standards.

D. In the "I-1" District, no land use permittee may emit from a vent, stack, chimney or combustion process any smoke that exceeds a density or equivalent capacity of Ringlemann No. 2, except that an emission that does not exceed a density or equivalent capacity of Ringlemann No. 3 is permissible for a duration of not more than four (4) minutes during any eight (8) hour period if the source of such emission is not located within two hundred fifty (250) feet of a residential district.

E. In the "I-2" District, no land use permittee may emit from a vent, stack, chimney or combustion process any smoke that exceeds a density or equivalent capacity of Ringlemann No. 2, except that an emission that does not exceed a density or equivalent capacity of Ringlemann No. 3 is permissible for a duration of not more than four (4) minutes during any eight (8) hour period if the source of emission is not located within five hundred (500) feet of a residential district.

Section 400.625 Noise.

[R.O. 2011 §400.625; Ord. No. 01-10 §1(12.08), 4-9-2001; Ord. No. 04-25 §1, 7-26-2004]

A. No land use in any business district may generate noise that tends to have an annoying or disruptive effect upon:

1. Uses located outside the immediate space occupied by the land use if that use is one (1) of several located on a lot, or

2. Uses located on adjacent lots.

B. Except as provided in Subsection (F), the table set forth in Subsection (E) establishes the maximum permissible noise levels for land uses in the "I-1" and "I-2" Districts. Measurements shall be taken at the boundary line of the lot where the land use is located and, as indicated, the maximum permissible noise levels vary according to the zoning of the lot adjacent to the lot on which the land use is located.

C. A "decibel" is a measure of a unit of sound pressure. Since sound waves having the same decibel level "sound" louder or softer to the human ear depending upon the frequency of the sound wave in cycles-per-second (i.e., whether the pitch of the sound is high or low), an American filter constructed in accordance with the specifications of the American National Standards Institute, which automatically takes account of the varying effect on the human ear of different pitches, shall be used on any sound level meter taking measurements required by this Section. Accordingly, all measurements are expressed in dB(A) to reflect the use of this A-weighted filter.

D. The standards established in the table set forth in Subsection (E) are expressed in terms of the Equivalent Sound Level (Leq), which must be calculated by taking one hundred (100) instantaneous weighted sound levels at ten (10) second intervals (see Appendix F-1 which is on file in the City offices) and computing the Leq in accordance with the table set forth in Appendix F-2 which is on file in the City offices.

E. Table Of Maximum Permitted Sound Levels, dB(A).

Table of Maximum Permitted Sound Levels, dB(A) (re: 0.0002 Microbar) Zoning of Adjacent Lot
Zoning of lot where 4,000 use located	Residential and PUD		"B-1", "B-2", "MU", "B-4", "B-5"	"I-1"	"I-2"
	7:00 A.M. — 7:00 P.M.	7:00 P.M. — 7:00 A.M.
"I-1"	50	45	55	60	65
"I-2"	50	45	60	65	70

F. Impact noises are sounds that occur intermittently rather than continuously. Impact noises generated by sources that do not operate more than one (1) minute in any one (1) hour period are permissible up to a level of ten (10) dB(A) in excess of the figures listed in Subsection (E), except that this higher level of permissible noise shall not apply from 7:00 P.M. to 7:00 A.M. when the adjacent lot is zoned residential. The impact noise shall be measured using the fast response of the sound level meter.

G. Noise resulting from temporary construction activity that occurs between 7:00 A.M. and 7:00 P.M. shall be exempt from the requirements of this Section.

Section 400.627 Vibration.

[R.O. 2011 §400.627; Ord. No. 01-10 §1(12.09), 4-9-2001; Ord. No. 04-25 §1, 7-26-2004]

A. No land use in any permissible business district may generate any ground-transmitted vibration that is perceptible to the human sense of touch measured at:

1. The outside boundary of the immediate space occupied by the enterprise generating the vibration if the enterprise is one (1) of several located on a lot, or

2. The lot line of the enterprise generating the vibration is the only enterprise located on a lot.

B. No land use in an "I-1" or "I-2" District may generate any ground-transmitted vibration in excess of the limits set forth in Subsection (E). Vibration shall be measured at any adjacent lot line or residential district line as indicated in the table set forth in Subsection (D).

C. The instrument used to measure vibrations shall be a three (3) component measuring system capable of simultaneous measurement of vibration in three (3) mutually perpendicular directions.

D. The vibration maximums set forth in Subsection (E) are stated in terms of particle velocity, which may be measured directly with suitable instrumentation or computed on the basis of displacement and frequency. When computed, the following formula shall be used:

	PV =	PV = 6.28 F X D
	Where:
	PV =	Particle velocity, inches-per-second
	F =	Vibration frequency, cycles-per-second
	D =	Single amplitude displacement of the vibration, inches.

The maximum velocity shall be the vector sum of the three (3) components recorded.

E. Table Of Maximum Ground-Transmitted Vibration.

	Table of Maximum Ground-Transmitted Vibration
	Zoning District	Particle Velocity, inches-per-second Adjacent lot line	Residential District
	"I-1"	0.10	0.02
	"I-2"	0.20	0.02

F. The values stated in Subsection (E) may be multiplied by two (2) for impact vibrations, i.e., discrete vibration pulsations not exceeding one (1) second in duration and having a pause of at least one (1) second between pulses.

G. Vibrations resulting from temporary construction activity that occurs between 7:00 A.M. and 7:00 P.M. shall be exempt from the requirements of this Section.

Section 400.630 Odors.

[R.O. 2011 §400.630; Ord. No. 01-10 §1(12.10), 4-9-2001; Ord. No. 04-25 §1, 7-26-2004]

A. For purposes of this Section, the "odor threshold" is defined as the minimum concentration in air of a gas, vapor or particulate matter that can be detected by the olfactory systems of a panel of healthy observers as appointed by the City Council.

B. No land use in any district may generate any odor that reaches the odor threshold measured at:

1. The outside boundary of the immediate odor space occupied by the enterprise generating the odor.

2. The lot line of the enterprise generating the odor is the only enterprise located on a lot.

Section 400.635 Air Pollution.

[R.O. 2011 §400.635; Ord. No. 01-10 §1(12.11), 4-9-2001; Ord. No. 04-25 §1, 7-26-2004]

A. Any land use that emits any "air contaminant" as defined in Chapter 643, RSMo., shall comply with applicable State standards concerning air pollution as set forth in the Revised Statutes of Missouri and the rules promulgated by the Missouri Department of Natural Resources or its successor agency.

B. No special use or conditional use permit may be issued with respect to any development covered by Subsection (A) until the developer provides written proof that the Missouri Department of Natural Resources has issued the appropriate State permits. The developer shall be required to provide copies of said permits showing that the development is otherwise in compliance with applicable air pollution laws.

Section 400.637 Disposal of Liquid Wastes.

[R.O. 2011 §400.637; Ord. No. 01-10 §1(12.12), 4-9-2001; Ord. No. 04-25 §1, 7-26-2004]

A. No land use in any district may discharge any waste contrary to the provisions of the laws and regulations of the State of Missouri as administered by the Missouri Department of Natural Resources, Missouri Department of Health or other cognizant agency.

B. No land use in any district may discharge into the City sewage treatment facilities any waste that cannot be adequately treated by biological means.

Section 400.640 Water Consumption.

[R.O. 2011 §400.640; Ord. No. 01-10 §1(12.13), 4-9-2001; Ord. No. 04-25 §1, 7-26-2004]

No land use in any district that requires for its operation a daily average of more than two thousand (2,000) gallons of water per employee is permissible in any district without first obtaining a water usage variance permit.

Section 400.645 Electrical Disturbance or Interference.

[R.O. 2011 §400.645; Ord. No. 01-10 §1(12.14), 4-9-2001; Ord. No. 04-25 §1, 7-26-2004]

A. No land use may:

1. Create any electrical disturbance that adversely affects any operations or equipment other than those of the creator of such disturbance, or

2. Otherwise cause, create or contribute to the interference with electronic signals (including television and radio broadcasting transmissions) to the extent that the operation of any equipment not owned by the creator of such disturbance is adversely affected.