Don't let this escalate, as legal relocation can cost $thousands$.Start keeping records of mold inspection reports and your history of None Found per unit; it will assist to show it's tenant behavior and not environmental.

There are very strict environmental laws and the removal/ water testing process and or treatment can become quite pricey.  

After over a month of waiting for appraisals, environmental assessments, inspections by city, etc we are two days from closing on a 6-unit building about an hour and a half outside Philadelphia.

I found out later the info sits in the "environmental office" and they don't always transmit the info to the central database.

4, I read somewhere that for automobiles shops,one consisting environmental pollution.  

You are running a risk of the cesspool failing, and having to pay environmental costs and fees, and pay to replace the cesspool with a septic tank, so looking at potentially a $20k cost.

Great location 'technically' but a crazy environmental issue right next door. 

You will most likely need an environmental report, and the appraisal is going to be more costly too.The larger title companies like First American and Fidelity have rate calculators that can give you an idea of closing costs, but I'm not sure if they support commercial properties.

Unless Buyer exercises the right to terminate granted herein, Buyer accepts the physical condition of the Property and any violation of governmental, building, environmental, and safety codes, restrictions, or requirements, but subject to Seller’s continuing AS IS Maintenance Requirement, and Buyer shall be responsible for any and all repairs and improvements required by Buyer’s lender. 

Wanted to throw up a post concerning Environmental Site Assessments.