Account ClosedRadon is easy and cheap to detect and relatively inexpensive to remediate.You do NOT want to remove the radon remediation system.

That said, I know very little about mold remediation.My question is: I have a 7-day inspection period on this house (it's an REO, and sold as-is), and I'm wondering what I should do in those 7 days to ensure the mold problem isn't a significant one (or one I can remediate myself)?

Because I am inexperienced in this area, I am not sure what to estimate for repairs - particularly for the mold remediation.

QUESTIONS: 1) If I keep the property, how do negotiate new terms since the contingency  was lifted and how do I learn/trust what remediation was done? 

However, if they are moving out and don't pay before they go, your only legal remedy may be to take them to court, and a judge could easily believe them.

How many days do I give her to remediate this situation? 

Companies that do inspection and remediation just have a perceived conflict of interest, while I am not saying that they are all crooked.Look up your municipal / state (for me its State) laws on septic systems. 

Solid financail outcome, quick sale, learned aboutwell issues and remediation.

The contract has been followed regarding inspection and provision of needed remedies.

Pharmacy or other will buy you out an deal with remediation sometimes for a good spot.