(A)   For the purpose of measuring the intensity and frequency of sound, the sound level meter, the octave band analyzer, and the impact noise analyzer shall be employed. The flat network and the fast meter response of the sound level meter shall be used. Sounds of short duration, as from forge hammers, punch presses, and metal shears, which cannot be measured accurately with the sound level meter shall be measured with the impact noise analyzer.

   (B)   Octave band analyzers calibrated in the Preferred Frequencies (American Standards Association S1, 6-1960, Preferred Frequencies for Acoustical Measurements) shall be used with Tables IA through ID, set forth in §§ 152.243 through 152.245.Octave band analyzers calibrated with pre-1960 octave band (American Standards Association Z24-10-1953, Octave Band Filter Set) shall use Tables IIA through IID) in §§ 152.243 through 152.245. For impact sounds measured with the impact noise analyzer, the sound pressure levels set forth in Tables I and II (A through D) may be increased by six decibels in each octave band.

('80 Code, § 152.240) (Ord. 94-14, passed 7-5-94)

   The following uses and activities shall be exempt from the noise level regulations:

   (A)   Noises not directly under the control of the property users;

   (B)   Noises emanating from construction and maintenance activities between 7:00 a.m. and 9:00 p.m.;

   (C)   The noises of safety signals, warning devices, and emergency pressure relief valves; and

   (D)   Transient noises of moving sources, such as automobiles, trucks, airplanes, and railroads.

('80 Code, § 152.241) (Ord. 94-14, passed 7-5-94)

   No operation or activity shall cause or create noise in excess of the sound levels prescribed herewith.

('80 Code, § 152.242) (Ord. 94-14, passed 7-5-94) Penalty, see § 152.999

   (A)   At the district boundaries. In the business zoning districts, at no point on or beyond the boundary of the zoning district shall the sound pressure level resulting from any use, operation, or activity exceed the maximum permitted sound levels as set forth in Tables IA and IIA:

 

   (B)   At lot lines. In the business zoning districts, at no point on or beyond the boundary of any lot shall the sound pressure level resulting from any use, operation, or activity exceed the maximum permitted decibel levels for the designated octave bands as set forth in Tables IB and IIB:

 

('80 Code, § 152.243) (Ord. 94-14, passed 7-5-94) Penalty, see § 152.999

   In the I-1 Light Industrial district and the PD-4 Industrial Planned Development District, at no point on or beyond the boundary of the zoning district shall the sound pressure level resulting from any use, operation, or activity exceed the maximum permitted sound levels as set forth in Tables IC and IIC:

 

('80 Code, § 152.244) (Ord. 94-14, passed 7-5-94)

   (A)   In the I-2 General Industrial District, at no point on or beyond the boundary of the zoning district shall the sound pressure level resulting from any use, operation, or activity exceed the maximum permitted sound levels as set forth in Tables ID and IID:

 

   (B)   Between the hours of 9:00 p.m. and 7:00 a.m., the sound levels shall not exceed the maximum permitted sound pressure levels prescribed for the I-1 Light Industrial and PD-4 Industrial Planned Development districts in § 152.244.

('80 Code, § 152.245) (Ord. 94-14, passed 7-5-94) Penalty, see § 152.999