I have a commercial shopping mall that I take care of that the bank has never grown grass due to poor soil when they built they stripped a lot of topsoil. Two years ago I got a price from a company in the area to do the job for $3,900 but the property manager said no thanks. He called this week asking for me to get a price together to do it myself. What would you guys do with this embankment? I have a mid size tractor and a mini skid steer. was wondering if I should go through with a tiller and rip out all the trenches that have been created. Let me know your thoughts.