Help - I found tar in a new garden
Hi, I'm new here, I have a problem and I'm looking for some advice.
I'm starting a new garden and while turning the soil amongst layers of large rocks I found a mass of black coal-like stuff. When warmed in the sun the pieces smelled like asphalt tar. All and all I think I dug out about 10-15 pounds of the stuff.
My property is pretty old, at one time it was the lone farm house on the street that ran a farm. I'm worried that the soil in my garden plot is possibly tainted and unusable for gardening at all.
Any advice is welcome, at this point I'm not really sure what to do next.