[...]
The outer surface, shown on Fort Liard Airport Zoning Plan No. E.3047, dated March 30, l995, is an imaginary plane established at a constant elevation of 45 m above the elevation of the airport reference point extending to the outer boundary described in Part VI, except that, where that plane is less than 9 m above the surface of the ground, the outer surface is located at 9 m above the surface of the ground.
[...]
