Used railroad ties to create raised garden/what to do now?
I paid my gardner to use railroad ties to create a raised area with the plan of screening it off so I could create a garden that the critters would not be able to get to. I was just informed that railroad ties are very toxic/carcinogenic.
I'm going to remove the ties, however, my concern now is that whatever comes off of the ties may have already leached into the soil. Any idea how much soil I would have to replace to make sure there is no danger from what may have already come into the soil?