The intent of the PRD zone is to allow opportunity for more creative and imaginative residential projects than generally possible under strict application of the zoning regulations in order that such projects shall provide substantial additional benefit to the general community. It is further intended to preserve unique or sensitive physical features, such as steep slopes, public views, retention of natural vegetation and to provide more open space and recreational amenities, for residents of the development and the general public, than would be available under conventional land development practices. Additionally, it is intended to promote more economical and efficient use of land and a unified design concept for residential development. (Ord. 867 § 1, 2001; Ord. 573 § 2, 1990).