[...]
Being a surface abutting the lateral limits of the approach surfaces described in paragraph 1(b) of Part III of this schedule and the outer limits of the horizontal surface, being an imaginary plane located 2,000 feet above sea level or 30 feet above the surface of the ground at any given location, whichever is the higher at that location, which outer surface is shown on Department of Transport Plan No. V.226, dated January 15, 1969.
[...]
