Remember when we went out of our way to make laws about flavored vaping because of some contaminated weed vapors?

And when that happens, can she then sell the apartment building to me with her being the lender?

The other is they now want a vapor barrier installed in the floor but these are older model trailers “as is” and we haven’t had an issue with mold or moisture.

Yea, the reason I said maybe to wait is her current 403b plan isn't freefalling due to her being invested HEAVILY in bonds. 

Stop getting the vapors and answer the questions.

Anyway, you MIGHT (or might not) be able to get away with a vapor mitigation system to treat the indoor air issue.

if there is residual contamination below the slab, it could pose a risk of vapor intrusion that could prevent you from renting the property for residential.

The geologist and toxicologist hired by the plant for ground and air sampling has assured me that the property is not in the contaminated area (I have these contacts because my current residence a block over has vapors coming in through the foundation and remediation in progress). 

What you really need to address in those pictures is the vapor barrier that's pulled away from the dirt.

Fresh paint, floors/carpet, plumbing repairs, electrical repairs, soffit repair, vapor barrier in crawl space, all sorts of stuff!