§ 154.045 PRELIMINARY PLATS.
   (A)   Purpose. The preliminary plat is intended to show all the planning factors necessary to enable the proper approving authorities to determine whether the proposed plan for land development is satisfactory from the standpoint of public interest and complies with city ordinances.
   (B)   Physical size. The preliminary plats shall be prepared on sheets a maximum size of 24 inches by 36 inches, regardless of the size of the subdivision.
   (C)   Scale. The preliminary plat shall be drawn to a scale of one inch equal to 100 feet or one inch equal to 50 feet; provided, that under special conditions, a smaller or larger scale may be accepted when prior approval of the Public Works Director has been obtained.
   (D)   Contents.
      (1)   Ownership and identification.
         (a)   Name of subdivider, record owner and volume and page of record ownership in the Johnson County Deed Records, and land planner, engineer or surveyor;
         (b)   Proposed name of the subdivision;
         (c)   Location of subdivision by city, county and state;
         (d)   Key map showing location of tract by reference to existing streets or highways;
         (e)   Date of preparation, scale of plat and north arrow;
         (f)   Subdivision boundary lines, indicated by heavy lines and the computed acreage of the subdivision;
         (g)   Names of the owners of contiguous parcels of unsubdivided land, the names of contiguous subdivisions and the lot patterns of these subdivisions shown by dotted or dashed lines;
         (h)   Location of the city limit lines, if they traverse the subdivision or form part of the boundary of the subdivision or are contiguous to the boundary; and
         (i)   The street intersections on the perimeter of the subdivision shall be shown.
      (2)   Existing conditions.
         (a)   The location, dimensions, name and description of all existing or recorded public and private rights-of-way, including easements, within the subdivision as well as those intersecting or contiguous with its boundaries or forming the boundaries;
         (b)   The location, dimensions, identification or name of all existing or recorded residential lots, parks and public areas within the subdivision;
         (c)   Permanent structures and uses within the subdivision, including location of houses, barns, walls, wells, tanks and other significant features that will remain;
         (d)   The location, dimensions, description and flow line of existing drainage structures and the location of flow lines and flood plain. Areas which will be inundated by 100-year flow as defined by the latest revision of the applicable Federal Emergency Management Agency’s flood insurance rate maps (FIRM) and flood boundary and floodway maps must be clearly shown;
         (e)   Utilities on the tract or contiguous thereto, specifying size of lines;
         (f)   Topography shown by contour lines on a basis of two feet vertical intervals. All elevations on the contour map shall be referenced to the latest U.S.C. and G.S. data; and
         (g)   If there is no adjacent subdivision, a map on a small scale shall be included with the preliminary plat, and oriented the same, to show the nearest subdivision in each direction; it shall show how the streets, alleys or highways in the subdivision submitted may connect with those in the nearest subdivision, if it affects the subdivision design.
      (3)   Proposed layout.
         (a)   The location, dimensions, description and purpose of all proposed alleys, drainage ways, parks, open spaces, other public areas, easements, streets, rights-of-way, blocks, lots and other sites within the subdivisions;
         (b)   A number or letter to identify each lot or sites and each block and the proposed name of each street in the subdivision;
         (c)   Data specifying the gross area of the subdivision, the proposed number of residential lots, the area and dimensions of each lot, the area in residential use and the approximate area in parks, streets and in other nonresidential uses;
         (d)   All building setback lines on all lots and tracts; and
         (e)   A "preliminary drainage study" submitted for approval concurrent with the submittal of any preliminary plat to the city.
   (E)   Substantial changes. If substantial changes are made in a preliminary plat after its approval, a revised preliminary plat shall be prepared and submitted for approval prior to the preparation of the final plat.
   (F)   Revised preliminary plat.
      (1)   Required. If the proposed replat significantly changes street right-of-way location or width, substantially increases the number of lots and would have a substantial impact on city services, drainage or adjacent properties, a revised preliminary plat will be required. The preliminary plat revision shall include all the area within the limits of the original preliminary plat except those areas which have unexpired final approval.
      (2)   Waiver of revised preliminary plat. The requirement of a revised preliminary plat may be waived when the plat revision is without significant change.
   (G)   Effect of disapproval. After disapproval of the preliminary plat, the subdivider may, at any time, submit a new design for city consideration following the same procedure as required for the original application. No resubmission and no new fee shall be required when city disapproval is for the purpose of further study or hearing by the city; provided, that any such resubmission shall be made within 45 working days after disapproval unless a longer resubmission period is specifically authorized.