(a)

The special maximum height regulations shall be indicated by the symbol "H" followed by a numerical figure, which figure shall represent the maximum permitted height in feet measured from the average elevation of the ground area to be covered by a particular building or structure.

(b)

In cases, where the "H" district is created to provide protection against airport hazards in an airport hazard area, the following shall apply:

1.

The symbol "AV" shall be added to the district symbol.

2.

The special height limit shall apply to all buildings and structures and to all trees and other objects of natural growth.

3.

The special height limit shall be measured from datum elevation which shall be the established elevation of the end of the airport closest to the particular airport hazard area district.