TSP is a great surfactant but you may want to add some chlorine as well to kill what you don't remove.

 

In nearly all states, underground heating oil tanks are exempt from regulation. While this could be used to lessen the asking price of the property (devalue it), the costing that you've noted is extreme. Typical removal of a 500'ish gallon UST wouldn't be more than a grand or two. If extensive subsurface contamination exists, most 'home-sized' tanks would have little potential to cause significant undue conditions.

All of that said, if it was something that I was buying - considering that I work in this exact field - it would DEFINITELY be something that I'd be somewhat concerned about prior to the divestiture.

Bingo.

This is a strong bartering chip when going to the negotiation table.


Exactly.

This is used commonly during abatement activities -- I even use an amended elmer's glue/water mix during some sampling activities to minimize fiber release.

 

Rather than encapsulating the asbestos-containing siding with another type of siding, I'd seriously consider proper abatement and then the addition of new siding.

Abatement of a 'normal' sized house won't be incredibly expensive but, several thousand is probably a place to start -- that is, just for the abatement and disposal of the ACM.

Then, you start anew with the vinyl siding...