The primary purpose of this district is to provide for the retention and enhancement of open space, recreation, and conservation areas such as Hinkson's Run and the Parkside Woodlot adjacent to Chester Park. Other purposes are to assure the preservation of significant natural resources such as bodies of water, marshlands, and wooded areas, and to establish reasonable controls in order to maintain the benefits of open space, recreation, and conservation areas. District regulations for uses permitted by right are strict in their nature with the intent to ensure that there will be no adverse effect on the natural resources and wildlife in the district or nearby residential areas.