No building or object of natural growth located within two miles of the boundaries of any airport, landing field, or landing and takeoff strip and within a band of 500 feet on each side of the center line extended of any runway shall hereafter be erected, altered or permitted to grow to a height above the elevation of the nearest point of such runway greater than 1/15 of the distance from said point.

No building or land located within two miles of the boundary of any airport, landing field, or landing and takeoff strip shall be so used that by reason of the emission of smoke, gas or other emanation it shall produce a hazard to the operation of aircraft.

No apartment, church, assembly hall or other type of building where people normally congregate is permitted within the area prescribed in § 485-115.

The aforesaid regulations shall not apply to growing field crops which are harvested at least once a year nor to fences not over five feet high. The provisions of this article shall not apply to landing areas that are designed and used exclusively for helicopters or similar vertical takeoff aircraft.