Off-street parking areas for more than five vehicles shall be effectively screened by a 10-foot-wide landscaped strip and a masonry wall or fence of acceptable design. Such wall or fence shall be not less than three and one-half feet or more than six feet in height and shall be maintained in good condition without any advertising thereon. The requirements specified herein may be eliminated in whole or in part where, in the opinion of the Zoning Administrator, such requirements are not necessary for the proper protection of abutting property because of substantial grade differentials, the existence of adequate walls or other equally valid reasons. (Ord. 3153 § 2 (Exh. A), 2010; Ord. 1356 § 1, 1971; Ord. 1212 § 1, 1969; prior code § 33.801(F)(2)).