I have an in with someone dealing with ALB, and was advised of the following.
Yesterday was the first removal in Toronto for ALB. They will be working throughout the winter to remove trees infested, as well as other host species in the infection zone (they have not yet id'd a quarantine zone). The number of trees for removal has not been determined. They are still making inspections, including climbing trees in a ravine. The insect was mostly concentrated in an industrial area between two municipalities, but some have been found in remote locations, one on the other side of a ravine. The big question is, was the insect transferred to the remote areas by humans (wood), or did the insect move through the ravine. The biggest concern of course is the ravine. My understanding is that no evidence has yet been found in trees in the ravine area, but close to it.
There are a number of organizations trying to determine exactly what needs to be done. I think we are fortunate, since we can learn from people in the US that have been dealing with the pest for several years now. They too are involved in discussions.
It was a municipal employee doing the work. I mentioned about leg protection & was assured that the climber was wearing full personal protection. News of the removal was being broadcast for days prior to the event, so I imagine many news teams were on hand to witness it.
