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The approach surfaces, shown on Sarnia Airport Zoning Plan No. 38-028-84-133, Sheets 2 to 8 inclusive and 10 to 13 inclusive, dated March 17, 1986, are surfaces abutting each end of the strips associated with runways designated 05-23 and 14-32 and are described as follows:
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(a) a surface abutting the end of the strip associated with runway approach 05 consisting of an inclined plane having a ratio of 1 m measured vertically to 25 m measured horizontally rising to an imaginary horizontal line drawn at right angles to the projected centre line of the strip and distant 1 110 m measured horizontally from the end of the strip; the outer ends of the imaginary horizontal line being 141 m from the projected centre line; said imaginary horizontal line being 44.4 m above the elevation at the end of the strip;
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(b) a surface abutting the end of the strip associated with runway approach 23 consisting of an inclined plane having a ratio of 1 m measured vertically to 25 m measured horizontally rising to an imaginary horizontal line drawn at right angles to the projected centre line of the strip and distant 1 115 m measured horizontally from the end of the strip; the outer ends of the imaginary horizontal line being 141.5 m from the projected centre line; said imaginary horizontal line being 44.6 m above the elevation at the end of the strip;
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(d) a surface abutting the end of the strip associated with runway approach 32 consisting of an inclined plane having 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 distant 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; said imaginary horizontal line being 300 m above the elevation at the end of the strip.
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