This plan shall show existing and proposed wooded areas, buffer areas (including the intended screening devices and buffers), grading at two-foot contour intervals inside the tract and within 50 feet of its boundaries, seeded and/or sodded areas, ground cover, restraining walls, fencing, signs, recreation areas, shrubbery, trees and other landscaping features. This plan shall also show the location and type of man-made improvements and the location, species and caliper of plant material and trees to be located on the tract. The plan shall show how the interior of paved areas, such as parking lots, shall be landscaped, and all portions of the property not utilized by buildings or paved surfaces shall be landscaped, utilizing combinations such as landscaped fencing, shrubbery, lawn area, ground cover, rock formations, contours, existing foliage and the planting of coniferous and/or deciduous trees native to the area, in order to maintain or re-establish the tone of the vegetation in the area and lessen the visual impact of the structures and paved areas. The established grades and landscaping on any site shall be planned for aesthetic, drainage and erosion control purposes. The grading plan, drainage facilities and landscaping shall be coordinated to prevent erosion and siltation as well as to assure that the capacity of any downstream natural or man-made drainage system is sufficient to handle the water from the site and contributing upstream areas.