Perimeter Buffer. A minimum twenty-five-foot-wide landscaped buffer shall be maintained along all boundaries, which shall not be occupied by any site improvements, including buildings, driveways, parking, etc., however a pedestrian walking path circulating around the perimeter of the site shall be permitted within or adjacent to the landscaped buffer, and stormwater management grading may be permitted within the landscaped buffer to the extent deemed necessary by the Board.