In this context, a boulevard is the portion of City property that sits between the curb (or sidewalk) and the adjacent property line. If you look at your Real Property Report you will see the first one to three metres of property that is next to the curb- or sidewalk if there is one- is outside your property line. This is the boulevard.
An easement is the legal right to use another person's land for a stated purpose. Easements are automatically transferred from one owner to another if the land is sold.
A utility right of way is a registered easement on private land that allows The City and certain utility companies the right to access the utilities or services that are buried within the right of way. Permanent structures are not permitted to be built within a utility right of way.