Dealing with buried oil tanks in WNC

[Travis Provin]

Does anyone here have experience buying properties with buried, out of use oil tanks? I'm looking to purchase my first home to run as a househack and I am seeing a lot of properties in the western North Carolina area that have buried oil tanks. A lot of them are no longer in use but the tank is still present. Everything I have read on Bigger Pockets has me saying oil tanks are a hard NO and I ignore the property no matter what but with them being so common in this area I'm wondering if anyone on here has any experience. Seems like the most common approach is to include a contingency that the seller disposes of the tank and provides a clean bill of health on the soil.