@AJ ArdA Phase 1 study won't look for things like asbestos or lead paint unless it's specifically requested, these studies are looking specifically for soil and water contamination, issues with the structure are outside the normal scope.  

There is no documentation or list of addresses with meth contamination that it appears on, as it was removed after the remediation, which is supposed to give the house a fresh start, at a cost I believe of $18K.

The playground at her kids school was contaminated and they sent two guys with a shovel.

However, either of those options helps me avoid dealing with any contaminants on the wood.I really do appreciate all the advice!

Is it a contaminated site that needs to be cleaned up.

You can bill +$30 a month for "park sewage"But Well water is too much liability,  Imagine contaminated ground water is found and now +50 new lawsuits come your way.  

Liabilities: massive differed capital cost as sludge accumulates in lagoon and then must be removed every 20 or 30 years, potential groundwater contamination from partially treated wastewater leaking out bottom of lagoon, huge amount of land required for lagoons (1 to 3 acres for 50 space park), inability of lagoons to remove nutrients (nitrates under new regulations), irradict / poor treatment during winter.

It might work but in my 30 years in the flooring industry the result is usually the two glue contaminate each other and you have a bigger mess.

There's a high likelihood of contaminated soils

Wells rage from about $5000 to $10K  for a full replacement, but unless the water is bad (contaminated) or dry you can usually fix them its litterally a hole in the ground with a pump at the bottom of the pipe, everything else is in the house and as simple as can be, a $20 pressure switch and a $100-200 pressure tank is pretty much all that usually fails.