A. Certain terms used in this chapter shall be defined, for purposes of this chapter, as follows:
1. "Ambient noise level (ANL)" means the existing background noise level exclusive of noise emitted by a helicopter, as measured by a Class 1 or 2 sound level meter meeting the standards of the American National Standards Institute (ANSI-SI.4-1983) and measured in dBA.
2. "Approach-departure path" means the flight path of a helicopter as it approaches or departs from a designated takeoff and landing area.
3. "Decibel A (dBA)" means the A-weighted sound pressure level.
4. "FAA" means the Federal Aviation Administration.
5. "FAR" means the Federal Aviation Regulation.
6. "Helicopter" means a rotary-wing aircraft capable of vertical takeoff and landing.
7. "Helicopter noise level (HNL)" means the maximum noise level generated by a helicopter, as measured by a Class 1 or 2 sound level meter meeting the standards of the American National Standards Institute (ANSI-SI.4-1983) and measured in dBA.
8. "Helicopter operation" or "operation" means the combined takeoff and landing of a helicopter.
9. "Heliport" means a designated land area used for helicopter operations and any appurtenant areas, including fueling facilities, terminal buildings and maintenance and repair facilities.
10. "Helistop" means a designated land area or roof structure used for the pickup of discharge of passengers and cargo, which does not provide helicopter maintenance and repair facilities or fueling services.
11. "Noise-sensitive land use" means:
a. A land use subject to interference or annoyance by the intrusion of helicopter noise. Examples include, but are not limited to: residential uses; educational, cultural and religious facilities; health services; tourist lodging services; outdoor recreational or entertainment facilities; offices; research laboratories; and government designated wilderness areas or monuments; or
b. Such unconstructed uses as listed above, having an approved subdivision plat, development plan or building permit.
12. "Slant range measurement" means the measurement taken from the closest point of the perimeter of the landing pad in a straight line to the closest point of a property line.
(Ord. 1987-61 § 1 (part), 1987)