Works of art and/or arts facilities selected pursuant to the provisions of this Chapter and any amendments thereto may be placed in, on, or about any County-owned property or County-leased facility. Whenever possible, County-owned art should be placed so that the general public is highly likely to have access to the publicly-owned art, including in or near publicly-visited facilities. They may be attached or detached within or about such property and may be either permanent or temporary. The Department Head of the Department which is charged with the responsibility of administering the design and construction of a County construction project shall require that the design and final construction plans thereof take into consideration the allocation of appropriate space for the placement of art which has been recommended by the Arts Commission and duly authorized by the County Executive and Council; PROVIDED, that no works of art shall be permanent or permanently attached to any leased facility.