includes any improvement of public streets, sidewalks, alleys, curbs, gutters, sewers, sewer collection lines, sewer lateral, sewage pumping station, sewer pressure line, sewage treatment device, water line, water pumping station, water treatment device, water valves and hydrants, storm drainage sump, storm drainage line, storm drainage ditch, dike, fill, excavation and any improvements defined in ORS
223.387.