Buffer: A minimum buffer of 100 feet shall be provided along all property lines abutting a single-family residence or zone. Such buffer shall include evergreen and deciduous trees, shrubs, fences, walls, and berms or any combination which will provide a visual separation and screening. The buffer area shall be kept in its natural state where wooded; and where natural vegetation is sparse or nonexistent, the area shall be planted to provide a year-round screen in accordance with a landscaping plan approved by the Board. The developer may consider donating this buffer strip as a conservation easement to the Borough.