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(A) The following standards, unless otherwise specifically indicated, shall apply to all residential property within all sound zones:
Type of Land Usage
Allowable Interior Sound Level
7:00 a.m. to 10:00 p.m.
10:00 p.m. to 7:00 a.m.
(B) The sound level specified above shall be reduced by five dBA for impulse sound or simple tone noise or for sounds consisting of speech or music provided, however, that if the ambient exterior sound level exceeds the allowable interior sound level, then the ambient exterior sound level shall be the standard.
(C) No person at any location within the city shall create, maintain, cause or allow any sound on property which causes the sound level when measured within any dwelling unit in any sound zone to exceed:
(1) The allowable interior sound level for a cumulative period of more than five minutes in any hour; or
(2) The allowable interior sound level plus five dBA for a cumulative period of more than one minute in any hour; or
(3) The allowable interior sound level plus ten dBA for any period of time.
(D) In the event the ambient exterior sound level exceeds any of the first two sound level categories above, the allowable interior sound level applicable to those categories shall be increased to reflect the maximum ambient sound level.
(E) If the measurement location is on a boundary between two different sound zones, the lower allowable interior sound level applicable to the sound zone shall apply.
(F) If the intruding sound is continuous and cannot reasonably be discontinued or stopped for a time period whereby the ambient exterior sound level may be determined, the same procedures specified in section 7-185(F) and (G) shall be followed prior to enforcement of the provisions of this section.
(`64 Code, Sec. 19-60.7) (Ord. No. 2292)