1. Application. Screening is required between adjacent zoning districts indicated in Table 173-2 when one or more of the following conditions in the more intensive zoning district is directly visible from and faces toward the boundary of the less intensive zoning district.
A. The rear elevation of buildings.
B. Outdoor storage areas or storage tanks, unless otherwise screened.
C. Loading docks, refuse collection points, and other service areas.
D. Major machinery or areas housing a manufacturing process.
E. Major on-site traffic circulation areas or truck and/or trailer parking.
F. Sources of glare, noise, or other environmental effects.
2. Opaque Barrier. A six-foot opaque barrier shall be provided which visually screens the conditions listed in subsection 1 from less intensive uses as follows:
A. A solid wood and/or masonry fence or wall at least six feet in height.
B. A landscaped screen, using evergreen or deciduous materials, capable of providing a substantially opaque, hedge-like barrier and attaining a minimum height of six feet within three years of planting. (Note: All planting materials shall conform to the minimum caliper/size requirements set in Section 173.05.)
C. A landscaped earth berm with a maximum slope of three to one, rising no less than six feet above the existing grade of the lot line separating the zoning districts.
D. Any combination of these methods that achieves a cumulative height of six feet.
3. Location of Screening Wall. A screening wall or fence shall be installed no closer to the less intensive zoning district than one-half the width of the required buffer yard.
4. Effect on Drainage. Screening shall not adversely affect surface water drainage.