Yesterday I completed a renovation job. This lady has a 15000sf backyard. In the middle of the yard, a 3500sf dead patch of grass was there. What I did was powerraked on a low setting, tearing everything up, then i ran over it all with my scag, then raked it up. I had 15 yards of topsoil delivered and spread it out over the area. Them layed down some starter fert. and seeded. When I was threw she told me that that area just died pratically overnight last fall. Could that be grub worms, or something else. When i broke up the soil with the powerrake, the soil looked kinda "sandy". Do you think grass will grow there again with what I did. I will follow up in about 5 or 6 weeks with some turf builder, then maybe mid-June with grub control. Will this work, do you think her grass will grow?