[...]
The approach surfaces, as shown on the zoning plan, are described as follows:
(a) an imaginary inclined surface abutting the end of the strip surface associated with runway approach 13 and ascending, from an assigned elevation of 46.57 m above sea level, at a ratio of 1 m measured vertically to 30 m measured horizontally, to an imaginary horizontal line drawn at right angles to the projected centre line of the strip surface and distant 2 500 m measured horizontally from the end of the strip surface; the outer ends of the imaginary horizontal line being 295 m from the projected centre line and 83.33 m above the assigned elevation at the end of the strip surface associated with runway approach 13; and
(b) an imaginary inclined surface abutting the end of the strip surface associated with runway approach 31 and ascending, from an assigned elevation of 42.26 m above sea level, at a ratio of 1 m measured vertically to 30 m measured horizontally, to an imaginary horizontal line drawn at right angles to the projected centre line of the strip surface and distant 2 500 m measured horizontally from the end of the strip surface; the outer ends of the imaginary horizontal line being 295 m from the projected centre line and 83.33 m above the assigned elevation at the end of the strip surface associated with runway approach 31.
[...]
