What existing conditions must be shown on a preliminary plat

The preliminary plat shall include the following information on existing conditions, unless waived or deferred by the director: (1) Location, width and names of all existing or platted streets within or adjacent to the tract, together with easements, other rights-of-way, and other important features, such as corners, property boundary lines, and control of access lines adjacent to State highways; (2) When required by the director, contours at vertical intervals of five feet where the slope is greater than ten percent. Elevations shall be marked on the contours based on an established bench mark or other datum approved by the director of public works. In addition, the contours as may be required by the manager, State department of health, and director of public works shall be shown; (3) The location and direction of all water courses and approximate location of areas subject to inundation or storm water overflow; (4) Existing uses of property, including but not limited to, location of all existing structures, wells, cisterns, private sewage disposal systems, and utilities; and (5) Zoning on and adjacent to the tract, provided that if the information required by subsection (3) is not shown, it shall be made a condition of tentative approval, and tentative approval shall also require drainage improvements pursuant to section 23-92 or their equivalent.