It's not that difficult. Obviously this building will be placed on deep piles because of the subway. It will then remain functional through any type of earthquake, including our 'upcoming' M7. It's more important for buildings on soft soil, which will be disrupted even for the Oklahoma M7. Downtown Toronto has just taken pieces of the old brick buildings and put them in steel frames for new buildings. But no building codes addresses the functionality of the building after an earthquake. Piles offer a factor of 10 to 100 in pgv seismic ruggedness especially related to functionality.
Of course, this also applies to what Torontonians refer to as 'real seismic zones'.