At least 20% of the gross tract area of each mobile home park shall be set aside as common open space for the use and enjoyment of the residents of the mobile home park. Such common open space shall be substantially free of structures, except for those designed for recreational purposes, and shall be in addition to those areas devoted to meeting the buffer requirements of this chapter.
A. 
Common open space areas shall be located and designed as areas easily accessible to residents and preserving natural features. Common open space areas should include both active recreation areas for all age groups and, particularly where the site includes a watercourse or hilly or wooded areas, land which is left in its natural state.
B. 
At least 25% of the open space areas shall be located in an area not subject to flooding and which is usable for active recreational use. No such active recreational open space areas shall be less than 1/2 acre in size.