Prior to the submission of a site plan application, all applicants shall submit to the Planning Department, a written narrative description and a concept plan in order to discuss the appropriateness of the proposed layout, the suitability of the land for development, and the general requirements for improvements. The plan shall outline the proposed design concept, including but not limited to the general massing of buildings (bulk and height), location of parking, circulation routes (roads and walks), features of historic concern, landscaping elements, watercourses, drainage ditches and other natural features.