We mow a new "fine fescue" lawn that was installed (sodded) a year ago. The grass is bagged (per customer request) and watered regularly with a watering system. The problem we are facing is that the lawn is on a hill and enough dirt has washed off in places badly enough that the nylon webbing of the sod is exposed. Somehow soil needs to be added in these areas without being washed down the hill by the sprinkler system or hard rain. I think that given a couple of years of overseeding and growing the grass will thicken enough to stop the erosion problem but it needs soil now. Does anyone know a good way to do this? Keep in mind the lawn is quite large and on a pretty steep grade (too steep for anything bigger than a ZTR without tearing up the turf). Thanks in advance.