It has has been repaired using "compaction chemical grouting method" which is the normal method of repair for these type problems at least from what I find researching it. 

Next need a list by tenant of any chemicals and how they are discharged by air, water, etc and their containment.  

Its made with similar chemicals as PVC but they claim its more flexible. 

There was one small room (bathroom) I had to wipe down the walls and ceiling with a chemical cleaner before the repaint because it was sticky brown with tar.

Chemicals like Natures Miracle attempt to neutralize the smell.

Might watch out for a chemical issue, though.Honestly, just drain it, flush it with the supply a little, and don't worry about it.

Hey everybody,My name is Robert McConaghy, I live just north of Boston and I'm a recent college grad (May 6th, 2011 Northeastern University, Bachelor of Science, Chemical Engineering).

I know you don't have the toxic chemicals etc.

This includes the heat treatment and in most cases a chemical and powder treatment.

The only reason I could see doing that is if there were some kind of toxic chemical in the wood but if it was just a normal flood with non-toxic water, you don't need to worry about that.