Nonprofit facilities including, but not limited to, park, play field, playground, arboretum, conservation area, wildlife sanctuary, winter sport, swimming pool, boating, horseback riding, fishing, foot, bicycle and bridle path, picnic area, tennis and other racquet game court or any similar use characteristically identified with open space areas, and of a noncommercial nature, but in accordance with the following development standards:
(a) Impervious cover for the use shall not exceed 15% of the lot area, including pedestrian or bicycle paths.
(b) Any improvement such as a building or structure excluding impervious cover, foot or bicycle paths and unnecessary accessways, shall be no closer than 100 feet to any lot boundary.