Either as part of the detailed site plan, or on a separate sheet drawn to the same scale as the site plan, existing site features shall be shown, including ground topography (contours), wooded or naturally vegetated areas, trees of eight inches diameter of breast height (DBH) or greater, floodplains, shorelines, wetlands, riparian corridors, geologic hazard zone, and any existing buildings, roads, trails, fences, or other physical improvements, and all existing easements.