A. Noise Standards for Residential Units. No person shall operate or cause to be operated within a residential unit. any source of sound, or allow the creation of any noise, that causes the noise level when measured inside a neighboring receiving residential unit to exceed the following standards:
1. Standard No. 1. The applicable interior noise level for cumulative period of more than five minutes in any hour;
2. Standard No. 2. The applicable interior noise level plus five dB for a cumulative period of more than one minute in any hour; or
3. Standard No. 3. The applicable interior noise level plus ten dB for any period of time.
B. Interior Noise Levels for Multi-Family Residential. The following interior noise levels shall apply within multi-family dwellings with windows in their normal seasonal configuration.
Noise Zone | Designated Land Use | Time Interval | Allowable Interior Noise Level(dBl |
All | Multi-family Residential | 10:00 p.m.—7:00 a.m. 7:00 a.m.—10:00 p.m. | 40 45 |
If the measured ambient noise level reflected by the L50 exceeds that permissible within the interior noise standards in subsection A above. the allowable interior noise level shall be increased in five dB increments to reflect the ambient noise level (L5„ ).
(Ord. 182 § 2 (part), 1997)