The approach surfaces, shown on Public Works Canada Greenwood Airport Zoning Plan No. S-1750, dated November 15, 1988, are imaginary surfaces that abut each end of the strips associated with runways 08-26, 13-31, and 01-19, and that are more particularly described as follows:
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(a) a surface that abuts the end of the strip associated with runway 13 and consists of an inclined plane having a ratio of 1 m measured vertically to 60 m measured horizontally rising to an intersection with the outer surface; thence the approach surface slopes upward at a ratio of 1 m measured vertically to 50 m measured horizontally rising to an imaginary horizontal line drawn at right angles to the projected centre line of the strip and at a distance of 15 000 m measured horizontally from the end of the strip, the outer ends of the imaginary horizontal line being 2 400 m from the projected centre line, the imaginary horizontal line being 291 m measured vertically above the assigned elevation at the end of the strip;
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(b) a surface that abuts the end of the strip associated with runway 31 and consists of an inclined plane having a ratio of 1 m measured vertically to 60 m measured horizontally rising to an intersection with the outer surface; thence the approach surface slopes upward at a ratio of 1 m measured vertically to 50 m measured horizontally rising to an imaginary horizontal line drawn at right angles to the projected centre line of the strip and at a distance of 15 000 m measured horizontally from the end of the strip, the outer ends of the imaginary horizontal line being 2 400 m from the projected centre line, the imaginary horizontal line being 291.6 m measured vertically above the assigned elevation at the end of the strip;
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(c) a surface that abuts the end of the strip associated with runway 08 and consists of an inclined plane having a ratio of 1 m measured vertically to 60 m measured horizontally rising to an intersection with the outer surface; thence the approach surface slopes upward at a ratio of 1 m measured vertically to 50 m measured horizontally rising to an imaginary horizontal line drawn at right angles to the projected centre line of the strip and at a distance of 15 000 m measured horizontally from the end of the strip, the outer ends of the imaginary horizontal line being 2 400 m from the projected centre line, the imaginary horizontal line being 291.2 m measured vertically above the assigned elevation at the end of the strip;
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(d) a surface that abuts the end of the strip associated with runway 26 and consists of an inclined plane having a ratio of 1 m measured vertically to 60 m measured horizontally rising to an intersection with the outer surface; thence the approach surface slopes upward at a ratio of 1 m measured vertically to 50 m measured horizontally rising to an imaginary horizontal line drawn at right angles to the projected centre line of the strip and at a distance of 15 000 m measured horizontally from the end of the strip, the outer ends of the imaginary horizontal line being 2 400 m from the projected centre line, the imaginary horizontal line being 291.2 m measured vertically above the assigned elevation at the end of the strip;
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(e) a surface that abuts the end of the strip associated with runway 01 and consists of an inclined plane having a ratio of 1 m measured vertically to 40 m measured horizontally rising to an imaginary horizontal line drawn at right angles to the projected centre line of the strip and at a distance of 3 000 m measured horizontally from the end of the strip, the outer ends of the imaginary horizontal line being 525 m from the projected centre line, the imaginary horizontal line being 75 m measured vertically above the assigned elevation at the end of the strip; and
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(f) a surface that abuts the end of the strip associated with runway 19 and consists of an inclined plane having a ratio of 1 m measured vertically to 40 m measured horizontally rising to an imaginary horizontal line drawn at right angles to the projected centre line of the strip and at a distance of 3 000 m measured horizontally from the end of the strip, the outer ends of the imaginary horizontal line being 525 m from the projected centre line, the imaginary horizontal line being 75 m measured vertically above the assigned elevation at the end of the strip.