[...]
The outer surface, shown on Department of Transport Abbotsford Airport Zoning Plan No. (Z) B.C. 1414 dated November 7, 1980 is an imaginary surface located at a common plane established at a constant elevation of 45 m above the assigned elevation of the airport reference point except where that common plane is less than 9 m above the surface of the ground, the imaginary surface is located at 9 m above the surface of the ground.
[...]
