No certificate of occupancy shall be issued for any use or building involving the installation of utilities or street improvements, parking areas, buffer areas, storm drainage facilities, other site improvements, the alteration of the existing grade on a lot or the utilization of a new on-site well or sanitary disposal system unless all required improvements are installed and approved by the Township Engineer or other appropriate authority, or the Township Engineer or other appropriate authority, where applicable, shall have certified occupancy can occur with no detrimental impact on the health, welfare and/or safety of the occupants and the general public.