Which contaractor is responsible?

[Frank Rizzo]

I recently had a furnace replaced, while the contractors were changing out the old system they realized there was a chimney obstruction. I had a chimney company check it out, the chimney was collapsed and needed to be replaced.

The work is all finished and everything seems to be working fine now. The issue I am having is the mechanical room and hallway are filled with sute. Everything my tenant is storing in that room is covered with sute. Or course no one is taking responsibility. The question I have is, who is reasonable for the $2700+ to have the basement cleaned?

Any feedback would greatly be appreciated