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Town of Trenton, WI
Washington County
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Table of Contents
Table of Contents
A. 
General. A preliminary plat shall be required for all subdivisions and shall be based upon a survey by a registered land surveyor, and the plat shall be prepared on mylar or paper of good quality at a scale of not more than 100 feet to the inch and shall show correctly on its face the following information:
(1) 
Title 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, unless it is in addition to a previously recorded plat and is so stated on the plat.
(2) 
Location of the proposed subdivision by government lot, quarter section, township, range, county and state.
(3) 
Date, scale and North point.
(4) 
Names and addresses of the owner, subdivider and land surveyor preparing the plat.
(5) 
Entire area contiguous to the proposed plat owned or controlled by the subdivider shall be included on the preliminary plat even though only a portion of said area is proposed for immediate development. The Town Board, upon the Plan Commission's recommendation, may waive this requirement where it is unnecessary to fulfill the purposes and intent of this chapter and undue hardship would result from strict application thereof.
(6) 
General location sketch showing the location of the subdivision within the United States Public Land Survey sections.
B. 
Plat data. All preliminary plats shall show the following:
(1) 
Exact length and bearing of the exterior boundaries of the proposed subdivision referenced to a corner established in the United States Public Land Survey and the total acreage encompassed thereby.
(2) 
Locations of all existing property boundary lines, structures, drives, streams and watercourses, marshes, rock outcrops, wooded areas, railroad tracks and other significant features within the tract being subdivided or immediately adjacent thereto.
(3) 
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.
(4) 
Location and names of any adjacent subdivisions, parks and cemeteries and owners of record of abutting unplatted lands.
(5) 
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.
(6) 
Location, size and invert elevation of any existing sanitary or storm sewers, culverts and drainpipes, the location of manholes, catch basins, hydrants, and electric and communication facilities, whether overhead or underground, 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 tract, the nearest such sewers or water mains which might be extended to serve the tract shall be indicated by the direction and distance from the tract, size and invert elevations.
(7) 
Corporate limit lines within the exterior boundaries of the plat or immediately adjacent thereto.
(8) 
Existing zoning on and adjacent to the proposed subdivision.
(9) 
Contours within the exterior boundaries of the plat and extending to the center line of adjacent public streets to national map accuracy standards based upon mean sea level datum at vertical intervals of not more than two feet. At least two permanent bench marks shall be located in the immediate vicinity of the plat; the location of the bench marks shall be indicated on the plat, together with their elevations referenced to mean sea level datum and the monumentation of the bench marks clearly and completely described. Where, in the judgment of the Town Engineer, undue hardship would result because of the remoteness of the parcel from a mean sea level reference elevation, another datum may be used.
(10) 
High-water elevation of all ponds, streams, lakes, flowages and wetlands within the exterior boundaries of the plat or located within 100 feet therefrom.
(11) 
Water elevation of all ponds, streams, lakes, flowages and wetlands within the exterior boundaries of the plat or located within 100 feet therefrom at the date of the survey.
(12) 
Floodland and shoreland boundaries and the contour line lying a vertical distance of two feet above the elevation of the one-hundred-year recurrence interval flood or, where such data is not available, two feet above the elevation of the maximum flood of record within the exterior boundaries of the plat or within 100 feet therefrom.
(13) 
Soil types and their boundaries, as shown on the operational soil survey maps prepared by the United States Department of Agriculture, Soil Conservation Service.
(14) 
Location and results of soil boring tests within the exterior boundaries of the plat conducted in accordance with § Comm 85.20, Wis. Adm. Code, and delineation of areas with three-foot and six-foot groundwater and bedrock levels where the subdivision will not be served by public sanitary sewer service. 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.
(15) 
Location and results of percolation tests within the exterior boundaries of the plat conducted in accordance with § Comm 85.20, Wis. Adm. Code, where the subdivision will not be served by public sanitary sewer service. 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.
(16) 
Location, width and names of all proposed streets and public rights-of-way such as alleys and easements.
(17) 
Approximate dimensions of all lots together with proposed lot and block numbers. The area in square feet of each lot shall be provided.
(18) 
Location and approximate dimensions 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 nonpublic uses not requiring lotting.
(19) 
Approximate radii of all curves.
(20) 
Any proposed lake and stream access with a small drawing clearly indicating the location of the proposed subdivision in relation to access.
(21) 
Any proposed lake and stream improvement or relocation, and notice of application for approval by the Division of Environmental Protection, Department of Natural Resources, when applicable.
(22) 
Where the Plan Commission, Town Board or Town Engineer finds that it or he requires additional information relative to a particular problem presented by a proposed development in order to review the preliminary plat, it or he shall have the authority to request in writing such information from the subdivider.
C. 
Additional information. The Plan Commission and/or Town Board may require a proposed subdivision layout of all or part of the contiguously owned land even though division is not planned at the time.
A. 
General. A final plat prepared by a registered land surveyor shall be required for all subdivisions. It shall comply in all respects with the requirements of § 236.20, Wis. Stats., and this chapter.
B. 
Additional information. The final plat shall show correctly on its face, in addition to the information required by § 236.20, Wis. Stats., the following:
(1) 
Exact length and bearing of the center line of all streets.
(2) 
Exact street width along the line of any obliquely intersecting street.
(3) 
Exact location and description of streetlighting and lighting utility easements.
(4) 
Railroad rights-of-way within and abutting the plat.
(5) 
All lands reserved for future public acquisition or reserved for the common use of property owners within the plat.
(6) 
Special restrictions required by the Town Board relating to access control along public ways or to the provision of planting strips.
(7) 
Setback or building lines required by Town codes and ordinances.
(8) 
Utility and/or drainage easements.
C. 
Deed restrictions. Restrictive covenants and deed restrictions for the proposed subdivision shall be filed with the final plat.
D. 
Property owners' association. The legal instruments creating a property owners' association for the ownership and/or maintenance of common lands in the subdivision shall be filed with the final plat.
E. 
Survey accuracy.
(1) 
Examination. The Town Board or, at its direction, the Town Engineer or its designee shall examine all final plats within the Town and may make, or cause to be made by a registered land surveyor under the supervision or direction of the Town Engineer, field checks for the accuracy and closure of the survey, the proper kind and location of monuments, and legibility and completeness of the drawing.
(2) 
Maximum error of closure. Maximum error of closure before adjustment of the survey of the exterior boundaries of the subdivision shall not exceed, in horizontal distance or position, the ratio of 1:10,000, nor in azimuth, four seconds of arc per interior angle. If field measurements exceed this maximum, new field measurements shall be made until a satisfactory closure of the field measurements has been obtained; the survey of the exterior boundary shall be adjusted to form a closed geometric figure.
(3) 
Street, block and lot dimensions. All street, block and lot dimensions shall be computed as closed geometric figures based upon the control provided by the closed exterior boundary survey. If field checks disclose an error for any interior line of the plat greater than the ratio of 1:5,000, or an error in measured angle greater than one minute of arc for any angle where the shorter side forming the angle is 300 feet or longer, necessary corrections shall be made. Where the shorter side of a measured angle is less than 300 feet in length, the error shall not exceed the value of one minute multiplied by the quotient of 300 divided by the length of the shorter side; however, such error shall not in any case exceed five minutes of arc.
(4) 
Plat location. Where the plat is located within a quarter section, the corners of which have been relocated, monumented and coordinated by the Town, the tie required by § 236.20(3)(b), Wis. Stats., shall be expressed in terms of grid bearing and distance, and the material and Wisconsin state plane coordinates of the monument marking the relocated section or quarter corner to which the plat is tied shall be indicated on the plat. The grid bearing and distance of the tie shall be determined by a closed survey meeting the error of closure herein specified for the survey of the exterior boundaries of the subdivision. The Town Board shall receive the results of the Town Engineer's examination prior to approving the final plat.
F. 
Surveying and monumenting. All final plats shall meet all the surveying and monumenting requirements of § 236.15, Wis. Stats.
G. 
State plane coordinate system. Where the plat is located within a quarter section, the corners of which have been relocated, monumented and coordinated by the Town, the plat shall be tied directly to one of the section or quarter corners so relocated, monumented and coordinated. The exact grid bearing and distance of such tie shall be determined by field measurements, and the material and Wisconsin state plane coordinates of the monument marking the relocated section or quarter corner to which the plat is tied shall be indicated on the plat. All distances and bearings shall be referenced to the Wisconsin Coordinate System, South Zone, and adjusted to the Town's control survey.
H. 
Certificates. All final plats shall provide all the certificates required by § 236.21, Wis. Stats., and in addition the surveyor shall certify that he has fully complied with all the provisions of this chapter.[1]
[1]
Editor's Note: Original § 10-2-41(i), Recording, which immediately followed this subsection, was deleted at time of adoption of Code (see Ch. 1, General Provisions, Art. II). For recording of the final plat see § 350-12D.
A. 
General. A certified survey map prepared by a registered land surveyor shall be required for all minor land divisions. It shall comply in all respects with the requirements of § 236.34, Wis. Stats.
B. 
Additional information. The certified survey map shall show correctly on its face, in addition to the information required by § 236.34, Wis. Stats., the following:
(1) 
All existing buildings, watercourses, drainage ditches and other features pertinent to proper land division.
(2) 
Setbacks or building lines required by the Town Board and the Town Zoning Code.
(3) 
All lands reserved for future acquisition.
(4) 
Date of the map.
(5) 
Graphic scale.
(6) 
Name and address of the owner, subdivider and surveyor.
(7) 
Square footage of each parcel.
(8) 
Present zoning for the parcels.
(9) 
Utility and/or drainage easements.
(10) 
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). This requirement may be waived if the parcel(s) created is fully developed.
(11) 
Entire area contiguous to the proposed certified survey map owned or controlled by the subdivider shall be included on the certified survey map 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.
(12) 
Location of soil boring tests, where required by § Comm 85.20, Wis. Adm. 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 test shall be submitted along with the certified survey map.
(13) 
Location of soil percolation tests, where required by § Comm 85.20, Wis. Adm. Code, conducted in accordance with § Comm 85.20, 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 certified survey map.
C. 
State plane coordinate system. Where the map is located within a United States Public Land Survey quarter section, the corners of which have been relocated, monumented and coordinated by the Town, the map shall be tied directly to one of the section or quarter corners so relocated, monumented and coordinated. The exact grid bearing and distance of such tie shall be determined by field measurements, and the material and Wisconsin state plane coordinates of the monument marking the relocated section or quarter corner to which the map is tied shall be indicated on the map. All distances and bearings shall be referenced to the Wisconsin Coordinate System, South Zone, and adjusted to the Town's control survey.
D. 
Certificates. The surveyor shall certify on the face of the certified survey map that he has fully complied with all the provisions of this chapter. The Town Board, after a recommendation by the reviewing agencies, shall certify its approval on the face of the map.
E. 
Street dedication. Dedication of streets and other public areas shall require, in addition, the owner's certificate and the mortgagee's certificate in substantially the same form as required by § 236.21(2)(a), Wis. Stats.[1]
[1]
Editor's Note: Original § 10-2-42(f), Recording, which immediately followed this subsection, was deleted at time of adoption of Code (see Ch. 1, General Provisions, Art. II). For recording of the certified survey map see § 350-13E.
F. 
Requirements. To the extent reasonably practicable, the certified survey map shall comply with the provisions of this chapter relating to general requirements, design standards and required improvements. Conveyance by metes and bounds shall be prohibited where the lot(s) involved is less than 1 1/2 acres or 300 feet in width.
During the approval process, the Town Engineer may require that the subdivider provide street plans and profiles showing existing ground surface and proposed and established street grades, 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 Town Engineer.
The Town 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 Ch. Comm 83, Wis. Adm. Code, shall be complied with and the appropriate data submitted with the preliminary plat.
The Town Engineer, upon determining from a review of the preliminary plat 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 the publication Minimizing Erosion in Urbanizing Areas, as prepared by the United States Department of Agriculture, Soil Conservation Service, 1972, and shall be in accordance with standards set forth elsewhere in this Code.
Every preliminary plat, final plat and certified survey map, whether preliminary or final, shall depict the road or street access appertaining to each lot therein shown. Such road or street access shall be so located as to be conducive to public safety in regard to vehicular and pedestrian traffic, and it shall be so situated so as to promote the orderly platting and development of surrounding areas. If any lot abuts more than one road or street, each road or street access intended by the owner shall be depicted. It shall be the duty of the Plan Commission and the Town Board to evaluate each proposed lot access to determine whether or not it presents a safety hazard in regard to vehicular and pedestrian traffic and whether or not it promotes the orderly platting and development of the surrounding areas. The Plan Commission or the Town Board may reject any preliminary plat, final plat or proposed certified survey map because of its disapproval of any road or street access for any lot. In the alternative, the Plan Commission or the Town Board may approve any preliminary plat, final plat or certified survey map on condition that it be changed to show the access in a manner satisfactory to the Plan Commission and the Town Board. Any action by the Plan Commission or the Town Board pursuant to this section shall be presumed to be based upon facts indicating that the proposed access poses a hazard to vehicular or pedestrian traffic or fails to promote the orderly platting or development of surrounding areas.