Establishing that private property may not be acquired in Allegany County by condemnation unless it is necessary for specified public uses; establishing that private property acquired for a specified public use related to public health or safety may be used in any manner authorized by local zoning ordinances; requiring a condemnor in Allegany County that decides to sell condemned property to offer the property at a specified price first to a condemnee or the condemnee's heirs or assignees; etc.