We have two old chemistry labs connected by the old chemistry stockroom that are no longer being used for chemistry classes, but rather as storage of unwanted computers and what I consider to be general trash.  (Why these items are being stored here - no one seems to know!)The rooms are locked but many on campus have keys.  Two years ago, I had a chemical waste disposal company come in and all of the chemicals were packed up and taken away.  Several had to be stabilized due to peroxide formation, etc.  As I segregated the chemicals, I put all of the mercury compounds (many were so old they had elemental mercury in them) and broken mercury thermometers in one hood with the ventilation on.  It is next to this hood that most of the 'trash' is being stored.

 

My question is:  Is the area safe to use as general storage or are there still chemical hazards?

 

Thank you for your help.