A plat of survey and/or site plan layout consisting of a survey prepared by a professional land surveyor or other map drawn to scale and approved by the Planning and Development Administrator, showing the locations, boundaries, dimensions, uses and sizes of the following, as deemed appropriate by the Planning and Development Administrator: subject site; existing and proposed structures; existing and proposed easements, streets, and other public ways and utilities; off-street parking, loading areas, and driveways; existing highway access restrictions; ordinary high-water mark; channel, floodway, floodplain, and shoreland boundaries; and existing and proposed street, side, rear and shore yard setbacks. In addition, the site plan or plat of survey shall show, when required by the Planning and Development Administrator, the type, slope and boundaries of soils shown on the operational soil survey maps prepared by the United States Department of Agriculture Natural Resources Conservation Service for the Southeastern Wisconsin Regional Planning Commission. Also, such survey/site plan shall show, when required by the Planning and Development Administrator, any natural features such as waterways, woods, terrain, etc., which would tend to restrict the development of the parcel. Such survey or plan shall also show the location and size of any septic field, holding tank, well, utilities and roadways. Dimensions for street, side, rear and shore yard setbacks shall be clearly shown. All permit applications for new principal structures in any district shall be accompanied by a plat of survey prepared by a professional land surveyor.