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INDUSTRIAL MANUFACTURING AND PROCESSING PERFORMANCE STANDARDS
§ 152.260 SMOKE.
   (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 8333, 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 20% density of the smoke observed.
   (B)   All measurements shall be taken at the point of emission of the smoke.
   (C)   Only in the Light Industrial District shall any business or industrial use emit from a vent, stack, chimney, or combustion process any smoke that is visible to the naked eye. In that district, no use may emit from a vent, stack, chimney, or combustion process any smoke that exceeds a density or equivalent capacity of Ringlemann No. 1 except that an emission that does not exceed a density or equivalent capacity of Ringlemann No. 2 is permissible for a duration of not more than four minutes during any eight-hour period.
(Ord. passed 12-20-2001) Penalty, see § 152.999
§ 152.261 NOISE.
   (A)   No use in any permissible business or industrial district may generate noise that tends to have an annoying or disruptive effect upon uses located outside the immediate space occupied by the use if that use is one of several located on a lot, or uses located on adjacent lots.
   (B)   Except as provided in division (F), the table set forth in division (E) establishes the maximum permissible noise levels for uses in the L-1 District. Measurements shall be taken at the boundary line of the lot where the use is emitting the noise 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 noise 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 an A-weighted 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. And 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 division (E) are expressed in terms of the equivalent sound level (Leq), which must be calculated by taking 100 instantaneous A-weighted sounds levels at ten-second intervals.
   (E)   Table of maximum permitted sound levels, dB(A) emitting from industrial or businesses:
 
Residential
Commercial
Industrial
50
55
60
 
   (F)   (1)   Impact noises are sounds that occur intermittently rather than continuously.
      (2)   Impact noises generated by sources that do not operate more than one minute in any one-hour period are permissible up to a level of 10 dB(A) in excess of the figures listed above in division (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.
      (3)   The impact noise shall be measured using the fast response of the sound level meter.
(Ord. passed 12-20-2001) Penalty, see § 152.999
§ 152.262 ELECTRICAL DISTURBANCE OR INTERFERENCE.
   No use may:
   (A)   Create any electrical disturbance that adversely affects any operations or equipment other than those of the creator of such disturbance; or
   (B)   Otherwise cause, create, or contribute to the interference with electronic signals (including television and radio broadcasting transmission) to the extent that the operation of any equipment not owned by the creator of such disturbance is adversely affected.
(Ord. passed 12-20-2001) Penalty, see § 152.999
§ 152.263 ODOR.
   (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 health observers.
   (B)   No use in any district may generate any odor that reaches the odor threshold, measured at:
      (1)   The outside boundary of the immediate space occupied by the enterprise generating the odor; or
      (2)   The lot line if the enterprise generating the odor is the only enterprise located on a lot.
(Ord. passed 12-20-2001) Penalty, see § 152.999
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