My work has acquired property from the US Govt (US Marines) that in the past has had jersey barriers ringing some of the buildings for force protection. Now that the Marines are gone and the property is ours I would like to get all those 2' x 6' spots of bare ground back to growing grass. What is the best method to do this??? Would it be as simple as tilling them up a bit and reseeding or more involved??? Thank you for your help.