Something looks fishy here. Bloomberg says the air is clear. Other reports say 6 of 10 of the air samples came back positive for asbestos. I'd sure like to read the Air sample data
on this one as that is part of what I do for a living. Most old steam lines were wrapped with high levels of asbestos insulation there by making them more dangerous than lower percent insulation or other products containing asbestos like floor tiles.
Oh and one more thing, asbestos can remain airborne for days before it settles.