No less than the exterior half of the buffer area shall be planted and maintained with grass or ground cover, massed evergreens, and deciduous trees and shrubs of such species and size as will produce, within two (2) growing seasons, a screen at least four (4) feet in height and of such density as will obscure, throughout the full course of the year, all of the glare of automobile headlights emitted from the premises. The preservation of all natural wooded tracts, rock outcroppings, or topographic features shall be an integral part of said plans regardless of their proximity to required buffer zones.
a. Massed evergreens used in screen planting shall be at least four (4) feet in height when planted and produce a complete visual screen year-round.
b. The screen planting shall be maintained permanently and any plant material which does not live shall be replaced within one (1) year.
c. The screen planting shall be so placed that, at maturity, it will be no closer than three (3) feet from any street or property line.
d. A clear-sight triangle shall be maintained at all street intersections and at all points where private accessways intersect public streets.
e. The screen planting shall be broken only at points of vehicular and pedestrian ingress and egress.
f. No screen planting shall be required along street frontage.