1 Being a surface abutting each end of each strip associated with runway 11-29, consisting of an inclined plane having a ratio of one (1) foot measured vertically to fifty (50) feet measured horizontally, rising to an imaginary horizontal line drawn at right angles to the projected centre line of each strip two hundred (200) feet measured vertically above the elevation at the end of each strip and ten thousand (10,000) feet measured horizontally from the end of each strip, the outer ends of each imaginary horizontal line being two thousand (2,000) feet from each projected centre line, which surface is shown on Department of Transport Plan No. M-3710, dated September 20, 1971.