If they have nothing, a 404 permit is not required if no federal waterway or tributary is involved. In which case one can press on.. Corps are not usually an issue, I guess I don't understand who is controlling what, here. COE is our final say on Navigable or Federal.. we don't have anyone else other than KS dept of water resources that can step in, but their place is after permits (if required).
Different everywhere I guess.