Cost to have contaminated soil removed

[Peter Pezzano]

I'm in the process of obtaining a listing and I have listed a property in this same neighborhood the previous year. The issue is, that property had contaminated soil and the seller decided not to sell anymore, and I'm assuming this one does as well because of how close it is. I'm going to explain to the seller he needs to have an environmental test done to see if in fact the ground is contaminated. Does anyone know roughly what it would cost to have removed if the soil is definitely contaminated?

Thank you,