Unless otherwise expressly stated or the context clearly indicates a different intention, the following terms have the following meanings. Definitions of technical terms used in this chapter and which are not herein defined shall be obtained from publications of acoustical terminology issued by the American National Standards Institute (ANSI).
1. “Application” means the application submitted to the City requesting a noise permit.
2. “Emergency” means any occurrence of sets of circumstances involving actual or imminent physical or psychological trauma or property damage and which demands immediate action.
3. “Emergency work” means any work performed for the purpose of alleviating or resolving an emergency.
4. “Grain elevator” means the grain elevator existing in the City on January 1, 2006.
5. “Motor vehicle” means any motor-powered vehicle designed to carry at least one passenger or driver and of the type typically licensed for use on the public highways. “Motor vehicle” includes most motorcycles.
6. “Motorcycle” means any two- or three-wheeled motor vehicle.
7. “Noise” means any sound that disturbs humans or which causes or tends to cause an adverse psychological or physiological effect on humans.
8. “Noise disturbance” means those sounds defined as sounds not allowed in Section 52.04 of this chapter.
9. “Person,” unless used in such a manner as to denote only a human being, means any firm, partnership, domestic or foreign corporation, association, joint stock company, trust or other association or entity, city, county or state government and subdivisions or agencies thereof; and the federal government and subdivisions and agencies thereof.
10. “Powered model vehicle” means any self-propelled, airborne, waterborne, or land borne model plane, vessel, or vehicle that is not designed to carry persons, including, but not limited to, any model airplane, boat, car or rocket.
11. “Public right-of-way” means the traveled portion of any street or alley or similar place which is owned or controlled by the City or other governmental entity.
12. “Real property boundary” means an imaginary line along the ground surface, and its vertical extension, which separates the real property owned by one person from that owned by another person, but not including intra-building real property division.
13. “Recreational vehicle” means any motor-powered vehicle designed to carry at least one passenger or driver and equipped for use in racing or other recreational events or uses off of public right-of-way on public or private property; except, however, for the purposes of this chapter, any such vehicle that is licensed for use on the public highways is deemed a motor vehicle (or motorcycle if two- or three-wheeled) and not a recreational vehicle. Examples of recreational vehicles are: snowmobiles, minibikes, stock cars and motorboats.
14. “Residential property” means any property on which is located a building or structure used wholly or partially for living or sleeping purposes.
15. “Semi-tractor” means any vehicle weighing in excess of one and one-half tons having the capability of towing a semitrailer.
16. “Sound” means an oscillation in pressure, particle displacement, particle velocity or other physical parameter, in a medium with internal forces that cause compression and rarefaction of that medium. The description of sound may include any characteristic of such sound, including duration, intensity, and frequency.
17. “Sound equipment” means any radio, record player, tape deck, or compact disc player, loudspeaker, amplifier, sound track, or other device for producing, reproducing, or amplifying sound; however, sound equipment does not include sirens and other equipment used to alert persons to the existence of an emergency; equipment used by law enforcement and other public safety officials in the performance of their official duties; church carillons, bells or chimes; mobile radio or telephone signaling devices; public announcement systems used by the City or at the Waukee football stadium in conjunction with sporting events; or automobile and truck radios or players of recorded music such as compact discs or tapes or other such standard equipment used and intended for the use and enjoyment of the occupants of the vehicle, provided that the sound emitted from the vehicle does not exceed 75 dB(A) when measured at a distance of 25 feet.
18. “Sound level meter” means an instrument, including a microphone, amplifier, output meter, and weighting networks, which is sensitive to pressure fluctuations. The output meter reads sound pressure levels in decibels when properly calibrated and the instrument is of Type 2 or better as specified in American National Standards Institute, USA Standard Specification for General Purpose Sound Level Meters (S1.4-1971), and Preferred Center Frequencies for Acoustical Measurements (S1.6-1960), or any subsequent nationally adopted standard superseding such standards. A “weighted sound level” or “sound level” means the sound pressure level in decibels as measured on a sound level meter using the “A” weighting network. The level so read shall be designated as dB(A) or dBA. “Decibel” means a logarithmic and dimensionless unit of measure often used in describing the amplitude of sound and is denoted as dB.