The previous owner ground down stumps from some 2-3ft+ diameter trees and realized that some of them are going to be within the future turn down garage slab.

The stumps were from a previous owner, so nothing left for leverage, but is it going to be a pain in the ass for the concrete guy to remove what is left of them since they have been ground down 10-12”? Will the concrete sub just have to backfill with compacted fill? Will they just have to excavate and chase down what’s left of the roots?

Making sure I communicate and unknowns before they start removing topsoil.

Anyone got a lead on 4in form-a-drain 12ft lineals? Residential contractor in Columbus, OH looking for a steady supplier. No adapters needed.

Just curious if anyone uses this approach or has ever tried it. If so, what has been your experience landing jobs from GCs like this?