Each development shall be permanently screened from adjoining and contiguous residential areas or zone by a wall, fence, greenbelt, or other enclosure approved by the hearing examiner of minimum height of four feet and maximum height of seven feet. No signs shall be permitted on any part of a screening enclosure unless equivalent screening is provided by existing parks, parkways, recreational area, or by topography or other natural conditions. No screening shall be required when abutting existing parks, parkways, recreational area, or by topography or other natural conditions. (Added by Amended Ord. 02-064, Dec. 9, 2002, Eff date Feb. 1, 2003).