Many homes in Ontario are closer than 400m to turbines (pre-GEA approval)
Vesta Turbine Operating Manual (page 3) 2. Stay and Traffic by the Turbine
Do not stay within a radius of 400m (1300ft) from the turbine unless it is necessary. If you have to inspect an operating turbine from the ground, do not stay under the rotor plane but observe the rotor from the front.
Make sure that children do not stay by or play nearby the turbine. If necessary, fence the foundation.