[...]
The boundary of the lands to which these Regulations apply, shown on Toronto Island Airport Zoning Plan No. 20-004-83-113, Sheets 1 to 8, dated October 26, 1984, is described as follows:
[...]
Thence southerly, westerly and northerly along an arc drawn on a radius of 4 000 m measured from the Airport Reference Point to the point where the said arc intersects the southern limit of the southern transitional surface, the said point of intersection having UTM co-ordinates of N 4,829,782.04 and E 625,877.45;
[...]