The Board of Trustees may employ a Special Engineer to make, or assist in making, any particular estimate, survey, or other work. The Special Engineer shall make a record of the minutes of his or her surveys and all other work done for the municipality. He or she shall, when directed by the Board, accurately make all plats, sections, profiles, and maps as may be necessary in the judgment of the Board. He or she shall, upon request of the Board, make estimates of the costs of labor and material which may be done or furnished by contract with the municipality and make all surveys, estimates, and calculations necessary for the establishment of grades, bridges, building of culverts, sewers, electric light system, waterworks, power plant, public heating system, curbing and gutters, and the improvement of streets and erection and repair of buildings, and shall perform such other duties as the Board may require. All records of the Special Engineer shall be public records which shall belong to the municipality and shall be turned over to his or her successor.