This zone includes areas of significant environmental constraints, as identified on the Environmental Constraints Map contained in the adopted Master Plan of Warren Township dated January 22, 1990. Development standards encourage clustered single-family dwellings. Areas of accessible, and contiguous buildable uplands which are greater than 20 acres are considered appropriate for uses other than strictly large lot single-family residential or clustered single-family dwellings. Conditional uses consist of nursing homes, retirement facilities, private membership, nonprofit and recreation facilities.