The area on the premises where junk is kept (other than indoors) shall be enclosed and screened on all sides, including front and rear, which abut or are visible from a street, or residentially used or zoned property except for entrances and exits, with an opaque screen of a minimum height of eight feet measured from ground level and not more than ten feet in height. Entrances and exits shall not be wider or more numerous than reasonably necessary for the conduct of the business. Approved screening techniques include masonry walls, chain-link fence with slats, evergreen vegetative screens, landscape berms, existing vegetation or any combination thereof. Metal or wood fences shall only be permitted in conjunction with a continuous row of evergreen shrubs. In any case in which a fence/wall is constructed to provide screening, landscaping elements shall be incorporated along a majority of the fence/wall. Vegetation shall be planted on minimum 6' wide strip and located on the side of the fence that is visible from the street, areas accessible to the public within the site, or adjoining properties. For premises fronting on any roadway the width of the landscaped strip shall be increased to a minimum width of 25' along thoroughfares and collectors and 10' along other streets, in addition to the required yard setbacks. In the landscaped buffer, a minimum of one shade tree, minimum diameter of two-inch caliper measured at six inches above ground level at the time of planting, shall be planted for each 30 linear feet of landscape buffer. A minimum of ten shrubs, minimum of three feet tall at the time of planting, shall be planted for each 30 linear feet of landscape buffer. All other areas within the landscape buffer shall be covered with grass or another solid vegetative cover approved at the time of site plan approval.