[Amended at time of adoption of Code (see Ch. 1, General Provisions, Art. II)]
A preliminary plat shall be required for all subdivisions, shall be based upon a survey by a professional land surveyor, shall comply in all respects with the requirements of Chapter 236, Wisconsin Statutes, shall comply with the design standards and improvement requirements set forth in Article VII and Article VIII of this chapter and the plat prepared on tracing cloth, reproducible drafting film, or paper of good quality at a map scale of not more than 100 feet to the inch and shall show correctly on its face the following information:
A. 
Title or name under which the proposed subdivision is to be recorded. Such title shall not be the same or similar to a previously approved and recorded plat in Waukesha County unless it is an addition by the same owner to a previously recorded plat and is so stated on the plat.
B. 
Property location of the proposed subdivision by government lot, quarter section, township, range, county and state.
C. 
General location sketch showing the location of the subdivision within the U.S. Public Land Survey section oriented on the sheet in the same direction as the main drawing.
D. 
Date, graphic scale and North arrow.
E. 
Names and addresses of the owner, subdivider and land surveyor preparing the plat.
F. 
Entire area contiguous to the proposed plat owned or controlled by the subdivider and/or owner shall be included on the preliminary plat even though only a portion of said area is proposed for immediate development. The Plan Commission may waive this requirement where it is unnecessary to fulfill the purposes and intent of this chapter and severe hardship would result from strict application thereof.
[Amended at time of adoption of Code (see Ch. 1, General Provisions, Art. II)]
All preliminary plats shall show the following:
A. 
Exact length and bearing of the exterior boundaries of the proposed subdivision referenced to a corner established in U.S. Public Land Survey and the total acreage encompassed thereby.
B. 
Existing and proposed contours at vertical intervals of not more than two feet where the slope of the ground surface is less than 10%, and of not more than five feet where the slope of the ground surface is 10% or more. Elevations shall be marked on such contours based on National Geodetic Vertical Datum of 1929 (mean sea level).
C. 
Water elevations of adjoining lakes and streams at the date of the survey and approximate high and low water elevations, all referred to mean sea level (1929) datum.
D. 
Floodplain limits and the contour line lying a vertical distance of two feet above the elevation of the 100-year recurrence interval flood, or where such data is not available, five feet above the elevation of the maximum flood of record.
E. 
Location, right-of-way width and names of all existing streets, alleys or other public ways, easements, railroad and utility rights-of-way and all section and quarter section lines within the exterior boundaries of the plat or immediately adjacent thereto.
F. 
Type, width and elevation of any existing street pavements within the exterior boundaries of the plat or immediately adjacent thereto together with any legally established center line elevations, all to mean sea level (1929) datum.
G. 
Location and names of any adjacent subdivisions, parks and cemeteries, and owners of record of abutting unplatted lands.
H. 
Location, size and invert elevation of any existing sanitary or storm sewers, culverts and drain pipes, the location of manholes, catch basins, hydrants, and power and telephone poles, and the location and size of any existing water and gas mains within the exterior boundaries of the plat or immediately adjacent thereto. If no sanitary or storm sewers or water mains are located on or immediately adjacent to the lands being platted, the nearest such sewers or water mains which might be extended to serve such lands shall be indicated by their direction and distance from the nearest exterior boundary of the plat and their size, and invert elevations.
I. 
Locations of all existing property boundary lines, structures, drives, streams and watercourses, marshes, rock outcrops, wooded areas, railroad tracks, drainage easements, natural drainage areas, landfills and other similar significant natural or man-made features within the tract being subdivided or immediately adjacent thereto.
J. 
Location, width and names of all proposed streets and public rights-of-way, such as alleys and easements.
K. 
Approximate dimensions of all lots together with proposed lot and block numbers.
L. 
Location and approximate dimensions and size of any sites to be reserved or dedicated for parks, playgrounds, drainageways, or other public use or which are to be used for group housing, shopping centers, church sites, or other private uses not requiring platting.
M. 
Approximate radii of all curves.
N. 
Existing zoning on and adjacent to the proposed subdivision.
O. 
Any proposed lake and stream access with a small drawing clearly indicating the location of the proposed subdivision in relation to the access.
P. 
Any proposed lake and stream improvement or relocation.
Q. 
Soil type, slope and boundaries as shown on the detailed operational soil survey maps prepared by the U.S. Natural Resources Conservation Service.
R. 
Location of soil boring tests, where required by Chapter SPS 385 of the Wisconsin Administrative Code, made to a depth of six feet, unless bedrock is at a lesser depth. The number of such tests shall be adequate to portray the character of the soil and the depths of bedrock and groundwater from the natural undisturbed surface. To accomplish this purpose, a minimum of one test per three acres shall be made initially. The results of such tests shall be submitted along with the preliminary plat.
S. 
Location of soil percolation tests, where required by Chapter SPS 385 of the Wisconsin Administrative Code, conducted in accordance with Chapter SPS 385 of the Wisconsin Administrative Code, taken at the location and depth in which soil absorption waste disposal systems are to be installed. The number of such tests initially made shall not be less than one test per three acres or one test per lot, whichever is greater. The results of such tests shall be submitted along with the preliminary plat. Where mound systems are proposed, information required by the Wisconsin Administrative Code shall be submitted and may be required to be shown on the plat.
T. 
Additional information as requested by the Plan Commission or governing body to verify ownership, clarify questions raised during the approval procedure, address concerns raised by neighbors or members of the Plan Commission or governmental body and any other information the Plan Commission or governing body deems necessary to reach a decision on the preliminary plat. Failure to provide the requested additional information may be grounds for denial of the preliminary plat.
The Plan Commission, upon recommendation of the Municipal Engineer, may require that the subdivider provide street plans and profiles showing existing ground surface, proposed and established street grades, storm sewer plans and profiles showing the location, grades, sizes, cross sections, elevations and materials of required facilities, where applicable, including extensions for a reasonable distance beyond the limits of the proposed subdivision when requested. All elevations shall be based upon mean sea level (1929) datum, and plans and profiles shall meet the approval of the Municipal Engineer.
The Plan Commission, upon recommendation of the Municipal Engineer, may require that borings and soundings be made in specified areas to ascertain subsurface soil, rock and water conditions, including depth to bedrock and depth to groundwater table. Where the subdivision will not be served by public sanitary sewer service, the provisions of the Wisconsin Administrative Code shall be complied with, and the appropriate data submitted with the preliminary plat.
The Plan Commission, upon determining from a review of the preliminary plat by the Municipal Engineer that the soil, slope, vegetation and drainage characteristics of the site are such as to require substantial cutting, clearing, grading and other earthmoving operations in the development of the subdivision or otherwise entail a severe erosion hazard, may require the subdivider to provide soil erosion and sedimentation control plans and specifications. Such plans shall generally follow the guidelines and standards set forth in any and all ordinances, rules, regulations and publications adopted by separate resolution by the governing body.
The surveyor preparing the preliminary plat shall certify on the face of the plat that it is a correct representation of all existing land divisions and features and that he has fully complied with the provisions of this chapter.