For purposes of this chapter the properties within the city of Leavenworth are as follows:ī.1. The sound and noise limitations established herein are as set forth in the following table after any applicable adjustments provided herein are applied:Ģ. Between the hours of 10:00 p.m. 9.33.030 Public disturbance noise.Ī. It is unlawful for any person to cause or permit any sound or noise to intrude into the property of another person which sound or noise exceeds the maximum permissible noise levels set forth below in this section. Any public disturbance noise prohibited by this chapter is hereby declared to be a public nuisance per se. These noise occurrences adversely affect the public health and welfare, the value of property and the quality of the environment and constitute special conditions within the city which make necessary any and all differences between this chapter and regulations adopted by the Washington State Department of Ecology. Such noises constitute a public disturbance. The Leavenworth city council is aware of citizen complaints regarding specialized noise occurrences, such as the play of amplified music, the reproduction of amplified speech, the operation of motorized vehicles, and the running of either gas or diesel powered generators all at such volume and duration as unreasonably disturb and interfere with the peace, comfort and repose of others. H. “Weekend” means Saturday, Sunday and any legal holiday. G. “Weekday” means any day Monday through Friday which is not a legal holiday. The sound pressure level, in decibels, of a sound is 20 times the logarithm to the base 10 of the ratio of pressure of the sound to a reference pressure of 20 micropascals.ī. “Noise disturbance” means any sound which annoys, disturbs, or perturbs reasonable persons with normal sensitivities, or any sound which unreasonably injures or endangers the comfort, repose, health, hearing, peace, or safety of persons or animals.Ĭ. “Person responsible for the violation” means any person who is required by the applicable regulation to comply therewith, or who commits any act or omission which is a violation or causes or permits a violation to occur or remain upon property in the city, and includes but is not limited to owner(s), lessor(s), tenant(s), or other person(s) entitled to control, use and/or occupy property where a violation occurs.ĭ. “Sound amplification equipment” means any machine or device for the amplification of the human voice, music or any other noise or sound.Į. “Sound level” means a weighted sound pressure level measured by the use of a sound level meter using an A-weighted network and reported as decibels, dBA.į. “Sound level meter” means a device which measures sound pressure levels and conforms to Type I, S1A, Type II or S2A, as specified in the American National Standards Institute Specification Section 1.4 (1971) as now exists or as hereafter amended or modified. 9.33.015 Definitions.Īll terminology used in this chapter which is not defined below shall be interpreted in conformance with the most recent definitions used by the American National Standards Institute (ANSI) or its successor body, where applicable.Ī. “dBA” means the sound pressure level in decibels measured using the “A” weighting network on a sound level meter.
The intent of the city council is to control the level of noise pollution in a manner which promotes commerce, the use, value, and enjoyment of property, sleep and repose, and the quality of the environment by establishing maximum environmental noise levels applicable within designated areas or zones of the city, and to adopt appropriate exemptions to the provisions of this chapter to allow for the functioning of commercial business and the operation of construction and emergency equipment, and to declare certain noise-producing activities to be noise disturbances.
The purpose of this chapter is to minimize the exposure of citizens to the harmful physiological and psychological effects of excessive noise. Offenses Against Public Peace Chapter 9.33ĩ.33.035 Sound level measurement requirements.
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