The Department of Streets shall be headed by a Street Commissioner who shall be appointed by the Mayor subject to approval of the Council by a majority vote of its members. The Street Commissioner shall serve at the pleasure of the Mayor and Council and may be removed by the Mayor with the approval of the Council by a majority vote of its members. The Street Commissioner shall supervise the operation, improvement and repair of streets, alleys, highways, City lands, sidewalks, sanitary sewers, storm water sewers, cemeteries and such other facilities and functions as the Council may provide by ordinance or resolution, or the Mayor may direct. The salary of the Street Commissioner shall be fixed by the Mayor subject to approval by the Council by a majority vote of its members.