Is there any way to remedy this situation?

Nothing was mentioned about the mold remediation. :^(  This is a serious problem, and there is a specific way these remediation guys work to clean away mold that's there and treat the area so it doesn't reoccur.

This often happens because the landlord forgets to ask for certain remedies when bringing the ejectment action because they are in such a rush to get the tenant out.In Pennsylvania, an appellate court held that these installment land contracts are basically residential mortgages as well.

If the landlord fails to do so, then the tenant can withhold rent and seek other remedies.

Petitioner testified that the lessee, Economopoulos, pointed out to her a dead rat, a bee's nest, and several leaks during her single visit, yet petitioner presented no evidence that she attempted to remedy these problems during her period of ownership.

I have date/timestamped photos and video of the issue, as well as samples of the dirt saved.The business owner came and looked at the issue - did not try to remedy the situation at all, blamed my professional landscaper and his bobcat on tracks for compacting the soil as he graded (specs for the bobcat state <4 lbs psi, which is less than a person just walking around).  

I have date/timestamped photos and video of the issue, as well as samples of the dirt saved.The business owner came and looked at the issue - did not try to remedy the situation at all, blamed my professional landscaper and his bobcat on tracks for compacting the soil as he graded (specs for the bobcat state <4 lbs psi, which is less than a person just walking around).  

My question is, can I charge the tenant for the cost of mold remediation, and how should I go about it?

What are your remedies if the seller defaults with you?

As @Patricia Steiner said, in my state, an "As-Is" contract allows the buyer to walk away for any or no reason during the inspection period, while the "Standard" contract allows for the seller to remedy certain items to "working condition" and does not necessarily allow the buyer to back out scot-free.If you aren't sure of your contract, consult your Attorney, Realtor, or title company for some direction.