A.
Compliance with statutes. In laying out a certified survey or subdivision, the owner shall conform to the provisions of Ch. 236, Wis. Stats., and all applicable Village regulations. In all cases where the requirements of this chapter are different from the requirements of Ch. 236, Wis. Stats., the more restrictive provision shall apply. (See also § 478-44F.)
B.
Dedication. The subdivider shall dedicate land and improve streets as provided in this chapter and § 478-26. Streets shall be located with due regard for topographical conditions, natural features, existing and proposed streets, utilities and land uses and public convenience and safety. Streets shall conform to Official Maps adopted by the Village Board. The subdivision, certified survey parcel or land division shall be so designed as to provide each lot with satisfactory access to a public street or road. (See also § 478-44F.)
C.
Compliance with Comprehensive Plan and ordinances.
(1)
Land division compliance with plans. The arrangement, character,
features, and layout of land divisions in the Village of Sullivan
shall be designed to comply with the standards of this chapter, the
Comprehensive Plan, the Official Map, and/or any comprehensive utility
plans or other planning documents which may pertain to the standards
of design for land divisions and which have been adopted by the Village
Board. Where no such planning documents have been adopted, subdivisions
shall be designed according to engineering and planning standards
approved by the Village Engineer and applied so as to properly relate
the proposed development with adjacent development, the topography,
natural features, public safety and convenience, and the most advantageous
development of undeveloped adjacent lands. In the absence of a street
being shown on the Official Map, streets shall be provided in locations
determined necessary by the Village Engineer and to the right-of-way
widths required in this article for the classification of street required.
(2)
Street locations to comply with plans. The arrangement, character,
extent, width, grade, and location of all streets shall conform to
Village Master Plans, the Official Map, and to this chapter, and other
Village planning documents and shall be considered in their relation
to existing and planned streets, reasonable circulation of traffic,
topographical conditions, runoff of stormwater, public convenience
and safety, and in their appropriate relation to the proposed uses
of the land to be served by such streets.
(3)
Continuation. The arrangement of streets in new subdivisions shall
make provision for the appropriate continuation at the same or greater
width of the existing streets in adjoining areas.
D.
Areas not covered by Official Map or Plan. In areas not covered by
an Official Map or a Village Comprehensive Plan, the layout of streets
shall conform to the plan for the most advantageous development of
adjoining areas of the neighborhood. Streets shall be designed and
located in relation to existing and officially planned streets, topography
and natural terrain, streams and lakes and existing tree growth, public
convenience and safety and in their appropriate relation to the proposed
use of the land to be served by such streets.
E.
Proposed streets. Proposed streets shall extend to the boundary lines
of the tract being subdivided unless prevented by topography or other
physical conditions or unless, in the opinion of the Village Board,
such extension is not necessary or desirable for the coordination
of the layout of the subdivision or land division or for the advantageous
development of the adjacent tracts.
F.
Streets classifications. Streets shall be required and classified
by the Village Engineer in accordance with the Village's Comprehensive
Plan, and where not identified in said plan, in accordance with sound
engineering standards, into the classifications indicated below with
the designated minimum widths:
(1)
Arterial streets. Arterial streets shall be arranged so as to provide
ready access to centers of employment, centers of governmental activity,
community shopping areas, community recreation, and points beyond
the boundaries of the community. They shall also be properly integrated
with and related to the existing and proposed system of major streets
and highways and shall be, insofar as practicable, continuous and
in alignment with existing or planned streets with which they are
to connect.
(2)
Collector streets. Collector streets shall be arranged so as to provide
ready collection of traffic from residential areas and conveyance
of this traffic to the major streets and highway system and shall
be properly related to the mass transportation system, to special
traffic generators such as schools, churches and shopping centers
and other concentrations of population and to the major streets to
which they connect.
(3)
Minor streets. Minor streets shall be arranged to conform to the
topography, to discourage use by through traffic, to permit the design
of efficient storm and sanitary sewerage systems, and to require the
minimum street area necessary to provide safe and convenient access
to abutting property.
(4)
Proposed streets. Proposed streets shall extend to the boundary lines
of the tract being subdivided unless prevented by topography or other
physical conditions or unless, in the opinion of the Village Board,
such extension is not necessary or desirable for the coordination
of the layout of the subdivision or for the advantageous development
of the adjacent tracts.
G.
Arterial street and highway protection. Whenever the proposed subdivision
contains or is adjacent to a major street or highway, adequate protection
of residential properties, limitation of access and separation of
through and local traffic shall be provided by reversed frontage,
with screen planting contained in a nonaccess reservation along the
rear property line, or by the use of frontage streets.
H.
Reserve strips. Reserve strips shall not be provided on any plat
to control access to streets or alleys, except where control of such
strips is placed with the Village under conditions approved by the
Village Board.
I.
Alleys; cul-de-sac streets.
(1)
Commercial and industrial. Alleys may be provided in commercial and
industrial districts. The width of the right-of-way for residential
alleys shall be not less than 24 feet and the width of the right-of-way
for commercial and industrial alleys shall be not less than 32 feet.
Alleys shall be constructed according to base and surfacing requirements
for streets.
(2)
Residential. Alleys shall not be approved in residential areas unless
necessary because of topography or other exceptional circumstances.
(3)
Dead ends. Dead-end alleys are prohibited except under very unusual
circumstances, and crooked and T-alleys shall be discouraged. Temporary
dead-end streets shall not be over 1,000 feet in total length, shall
provide for eventual intersection spacing meeting the requirements
of this chapter and shall provide for temporary culs-de-sac or turnarounds
as approved by the Village Engineer. Temporary termination of streets
intended to be extended at a later date shall be accomplished with
a temporary cul-de-sac in accordance with the standards set forth
below, or by construction of a temporary T-intersection 33 feet in
width and 33 feet in length abutting the right-of-way lines of the
access street on each side.
(4)
Design of cul-de-sac streets. Cul-de-sac streets designed to have
one end permanently closed shall not exceed 750 feet in length. All
urban cul-de-sac streets designed to have one end permanently closed
shall terminate in a circular or teardrop turnaround having a minimum
right-of-way radius of 66 feet and a minimum outside curb radius of
51 feet to the face of the curb. The use of culs-de-sac shall be held
to a minimum and permanently dead-ended streets shall be prohibited.
J.
Continuation. Streets shall be laid out to provide for possible continuation
wherever topographic and other physical conditions permit. Provisions
shall be made so that all proposed streets shall have a direct connection
with, or be continuous and in line with, existing, planned or platted
streets with which they are to connect. Proposed streets shall be
extended to the boundary lines of the tract to be subdivided, unless
prevented by topography or other physical conditions, or unless the
Village Board determines such extension is not necessary or desirable
for the coordination of the layout of the subdivision with existing
layout or the most advantageous future development of adjacent tracts.
K.
Minor streets. Minor streets shall be laid out so as to discourage
their use by through traffic.
L.
Frontage roads. Where a land division abuts or contains an existing
or proposed arterial highway, or railroad right-of-way, the subdivider
shall provide a frontage road, platted access restriction along the
property contiguous to such highway, or such other treatment as may
be determined necessary by the Village Engineer to ensure safe, efficient
traffic flow and adequate protection of residential properties.
M.
Private streets. Private streets shall not be approved nor shall
public improvements be approved for any private street; all streets
shall be dedicated for public use.
N.
Tangents. A tangent at least 100 feet long shall be required between
reverse curves on arterial and collector streets.
O.
Visibility. Streets shall afford maximum visibility and safety for
motorist, bicycle, and pedestrian use and shall intersect at right
angles, where practicable. A minimum sight distance with clear visibility,
measured along the center line, shall be provided of at least 500
feet on major thoroughfares, 200 feet on collector-distributor streets,
and 150 feet on all other streets.
P.
Half streets. Half streets shall not be platted unless necessary
to provide the full width of an existing street platted to half width.
All newly platted streets shall be platted to the required full width.
Where a half street exists adjacent to a proposed land division, the
subdivider shall endeavor to acquire and dedicate the remaining half
street.
Q.
Intersections.
(1)
Angle of intersect. Streets shall intersect each other at as nearly
right angles as topography and other limiting factors of good design
permit. The curved street shall intersect another street with not
less than 15 feet of tangent right-of-way between the end of curvature
and the right-of-way of the street being intersected.
(2)
Number of streets converging. The number of streets converging at
one intersection shall be reduced to a minimum, preferably not more
than two. Cross-type intersections on local streets shall be avoided
whenever possible in favor of T-type intersections. Intersections
of local streets shall be at least 150 feet from each other.
(3)
Number of intersections; arterial streets. The number of intersections
along arterial streets shall be held to a minimum. Wherever practicable,
the distance between such intersections shall be not less than 1,200
feet, unless otherwise determined by the Village Engineer to provide
better safety.
(4)
Local street spacing. Local streets and frontage roads intersecting
with other local streets or collector streets shall, wherever practicable,
be spaced no closer than 150 feet between right-of-way lines, nor
closer than 250 feet to the right-of-way of an arterial street.
(5)
Property lines at street intersections. Property lines at street
intersections shall be rounded with a minimum radius of 25 feet or
of a greater radius when required by the Village Engineer.
(6)
Local streets. Local streets shall not necessarily continue across
arterial or collector streets, but if the center lines of such local
streets approach the major streets from opposite sides within 250
feet of each other, measured along the center line of the arterial
or collector streets, then the location shall be so adjusted that
the adjoinment across the major or collector street is continuous
and a jog is avoided.
(7)
Additional sight easements. At any intersection determined by the
Village Engineer, restricted development easements or additional street
right-of-way shall be platted to provide for adequate sight distances
in every direction of travel. At a minimum, the subdivider shall grade,
clear or otherwise provide for an unobstructed sight triangle at all
intersections incorporating the area within a triangle formed by the
intersection of the street right-of-way lines and a point on each
right-of-way line being not less than 30 feet from the intersection
point.
R.
Street names.
(1)
Village approval. Street names shall be approved by the Village Board
following the guidelines of this subsection.
(2)
Continuation; conformance with street numbering. Where a street maintains
the same general direction, except for curvilinear changes for short
distances, the same name shall continue for the entire length of the
street. House numbering difficulties shall be considered the determining
factor in considering whether a change of name is necessary due to
curvilinear changes. A street name shall be changed when required
to conform to the proposed or existing house numbering base.
(3)
Future through street. A name which is assigned to a street which
is not presently a through street, due to intervening land over which
the street extension is planned, shall be continued for the separate
portions of the planned through street.
(4)
Name guidelines. The following designations are guidelines for the
naming of streets:
(a)
Boulevard: a street with a divided pavement, either existing
or planned. If the divided pavement ends but the street continues,
the same street name and suffix shall continue.
(b)
Lane: to be limited to a street, one block long, not ending
in a cul-de-sac.
(c)
Circle: to be limited to a cul-de-sac of nine lots or more.
(d)
Court: to be limited to a cul-de-sac of eight lots or less.
(e)
Parkway: to be limited to a street abutting a park or greenway
or creek.
(5)
Culs-de-sac. The name of any projection of a street shall remain
unchanged even if the projection terminates in a cul-de-sac.
(6)
Preliminary approvals. Approval of street names on a preliminary
plat will not reserve the names nor shall the Village be required
to accept such names at the time of final platting.
(7)
Annexed lands. When a project area includes lands annexed to the
Village and has a roadway with an existing name, the Village Board
may rename the roadway to comply with Village street naming standards.
The Village shall assign addresses to all existing parcels within
the annexation area, including properties with preexisting addresses.
(8)
Street name length. Street names shall have no fewer than three and
no more than 12 characters. A space between two words is considered
a character.
(9)
Duplication. To eliminate potential confusion and delay of emergency
responses, duplication of street names shall not be permitted. Roadways
with the same name but different suffix designations shall be considered
duplicate roadway names (e.g., "Oak Drive" and "Oak Lane" are duplicates).
(10)
Similar or confusing spelling. To eliminate confusion, street
names that are difficult to spell, have similar spelling, can be spelled
several different ways or have phonetically confusing spelling shall
not be approved (e.g., "Broome" vs. "Broom," spelled two different
ways).
(11)
Unconventional spelling. To avoid confusion and allow for accurate
communication in emergency situations, unconventional spelling of
words in roadway names shall be prohibited (e.g., "Wynd Chime Lane").
(12)
Offensive or frivolous names. Roadway names that may be offensive
(slang, double meanings, discriminatory, slanderous, etc.) will not
be approved. Street names that could be considered frivolous or overly
complicated will not be approved ("I Did It My Way").
(13)
Vanity names. Roadway names that identify with a specific company,
individual, family or private entity will not be approved unless it
is demonstrated that such parties have made exceptional civic contributions
to the community.
(14)
Use of roadway type suffix or directional prefix words. Street
names that include a directional prefix or the roadway type suffix
as the roadway name or in the roadway name will not be approved (e.g.,
"Madison Court Drive" or "West Avenue").
(15)
Punctuation. Punctuation is not permitted in roadway names (e.g.,
"New-World Court"). Names shall not include hyphens, apostrophes,
or other nonletter characters.
S.
Limited-access highway and railroad right-of-way treatment. Whenever
the proposed subdivision contains or is adjacent to a limited-access
highway, arterial street or railroad right-of-way, the design shall
provide the following treatment:
(1)
Subdivision lots. When lots within the proposed subdivision back
upon the right-of-way of an existing or proposed limited-access highway
or a railroad, a planting strip at least 30 feet in depth shall be
provided adjacent to the highway or railroad in addition to the normal
lot depth. This strip shall be part of the platted lots but shall
have the following restriction lettered on the face of the plat: "this
strip reserved for the planting of trees and shrubs, the building
of structures hereon prohibited."
(2)
Commercial and industrial districts. Commercial and industrial districts
shall have provided, on each side of the limited-access highway, arterial
street or railroad, streets approximately parallel to and at a suitable
distance from such highway or railroad for the appropriate use of
the land between such streets and highway or railroad, but not less
than 150 feet.
(3)
Streets parallel to a limited-access highway. Streets parallel to
a limited-access highway or railroad right-of-way, when intersecting
a major street and highway or collector street which crosses said
railroad or highway, shall be located at a minimum distance of 250
feet from said highway or railroad right-of-way. Such distance, where
desirable and practicable, shall be determined with due consideration
of the minimum distance required for the future separation of grades
by means of appropriate approach gradients.
(4)
Minor streets. Minor streets immediately adjacent and parallel to
railroad rights-of-way shall be avoided, and location of minor streets
immediately adjacent to arterial streets and highways and to railroad
rights-of-way shall be avoided in residential areas.
T.
Street and pedestrianway design standards. The minimum right-of-way
and roadway width of all proposed streets shall be as specified by
the Comprehensive Plan, Comprehensive Plan components, Official Map,
neighborhood development study, or jurisdictional highway system plan,
or if no width is specified therein, the minimum widths shall be as
shown as follows. Street sections are for standard arterial, collector
and minor streets only. Cross sections for freeways, expressways and
parkways should be based upon detailed engineering studies. The type
of street cross section to be used shall be determined by the Village
Board.
(1)
Street cross sections; urban streets.
|
Type of street or public way
|
Minimum right-of-way to be dedicated
|
Minimum dimensions
|
|---|---|---|
|
Arterial streets (four-lane)
|
120 feet
|
Dual 36-foot pavement (face of curb to face of curb)
|
|
24-foot median
| ||
|
7-foot tree banks (curb lawn)
| ||
|
4-foot sidewalks
| ||
|
1-foot outside sidewalks
| ||
|
Arterial Streets (two-lane)
|
80 feet
|
48-foot pavement (face of curb to face of curb)
|
|
10.5-foot tree banks (curb lawn)
| ||
|
4-foot sidewalks
| ||
|
1-foot outside sidewalks
| ||
|
Collector Streets
|
66 feet
|
48-foot pavement (face of curb to face of curb)
|
|
10.5-foot tree banks (curb lawn)
| ||
|
4-foot sidewalks
| ||
|
1-foot outside sidewalks
| ||
|
Minor streets
|
66 feet
|
36-foot pavement (face of curb to face of curb)
|
|
9.5-foot tree banks (curb lawn)
| ||
|
4-foot sidewalks
| ||
|
1-foot outside sidewalks
| ||
|
Minimum cul-de-sac
|
66 foot radius
|
51-foot face of curb radius
|
|
9.5-foot tree banks (curb lawn)
| ||
|
4-foot sidewalks
| ||
|
1-foot outside sidewalks
| ||
|
Cul-de-sac barrel
|
60 feet
|
32-foot pavement (face to curb to face of curb)
|
|
8.5-foot tree banks (curb lawn)
| ||
|
4-foot sidewalks
| ||
|
1-foot outside sidewalks
| ||
(2)
Street grades. Street grades shall be established wherever practicable
so as to avoid excessive grading, the promiscuous removal of ground
cover and tree growth, and general leveling of the topography. All
changes in street grades shall be connected by vertical curves of
a minimum length necessary to provide adequate stopping site distance
(per maximum center-line slopes):
(3)
Radii of curvature. When a continuous street center line deflects
at any one point by more than 10°, a circular curve shall be introduced
having a radius of curvature on said center line of not less than
the following:
A.
General requirements.
(1)
Construction standards. All roadway construction and materials used shall be performed in accordance with the construction methods as listed in the appropriate sections of the "State of Wisconsin Department of Transportation Standard Specifications for Road and Bridge Construction" and its supplements, the Village of Sullivan's Engineering Guidelines (if such Guidelines are adopted by the Village Board), and this chapter, whichever is more restrictive. The design requirements of this section and § 478-41 shall be applicable to all streets and roads that are to be dedicated to the Village, regardless of whether such streets or roads are part of a new subdivision or land division. Design requirements for the pavement shall be adequate for the zoning classification of the area served by the subject street. A street which divides areas with different zoning classifications shall be constructed in accordance with the requirements of the area requiring the higher quality pavement. Any variation of this must have prior approval of the Village Engineer. Combination concrete curbs and gutters are required on all streets. (Refer to the section describing requirements for curbs and gutters.) A copy of all design assumptions and computations on which the proposed design is based shall be submitted to the Village Engineer.
(2)
Project costs. All roadway surveys, dedications, plans and specifications
and construction will be at the expense of the applicant or applicants.
This includes any expense incurred by the Village in the preparation
of plans and review and inspection of plans and construction.
(3)
Preliminary consultation. Prior to the design, preparation and construction
of any roadway to be dedicated to the Village of Sullivan, the applicant
shall notify the Village Engineer. An on-site meeting will then be
arranged to be attended by the Village Engineer and the applicant.
Plans must be provided in order for the Village Engineer to check
the design and the drainage.
(4)
Material slips. Copies of material slips for all materials furnished
for the road construction projects shall be delivered to the Village
before the Village approves the final construction.
(5)
Required inspections.
(a)
Prior to the commencement of any street construction, the subdivider
shall notify the Village Engineer at least one workday in advance
as to the nature of the work being done. The Village Engineer shall
be contacted for required inspections before and after the following
phases of construction:
(b)
Any deficiencies found by the Village Engineer shall be corrected
before proceeding to the next phase of construction.
(6)
Tests of materials. The Village reserves the right to obtain a sample
of the roadway base material prior to placement on the roadway for
purposes of determining whether the material meets gradation and soundness
requirements.
(7)
Pavement samples. Samples of bituminous concrete may be taken by
the Village during pavement construction operations for purposes of
determining that the material meets specifications.
B.
Construction standards. All streets and highways constructed in the
Village or to be dedicated to the Village shall fully comply with
the following construction standards, and shall be adequate for the
zoning classification or projected use of the area served by the street:
(1)
General. After completion of the underground utilities and approval
thereof, the streets shall be constructed. Unless phasing of construction
of improvements is approved by the Village Board or its designee,
building permits shall not be issued prior to the installation of
the street improvements and the approval of an individual lot grading
plan that conforms to the guidelines of the master site grading plan,
as determined by the Village Engineer, or his/her designee.
(2)
Street rights-of-way. Streets shall have a right-of-way width as established on the Official Map or as designated in § 478-41T; provided, however, that a greater or lesser roadway width may be required by the Village Engineer where necessary to assure uniformity along the entire length of any street.
(3)
Temporary streets. Construction of temporary streets shall require
authorization of the Village Board.
(4)
Standard street improvements.
(a)
Standard street improvements shall include streetlights, concrete
curbs and gutters, bituminous base course, bituminous surface course
and, when required, walkways.
(b)
The construction of standard street improvements can begin only
when either:
(c)
Upon obtaining the written approval of the Village Engineer
the subdivider can proceed with the construction of the standard street
improvements. Standard street improvements shall be installed to the
boundary line of the subdivision unless the street culminates in a
cul-de-sac, the topography or other physical conditions make it impossible
to do so, or unless this requirement is waived, in writing, by the
Village Engineer.
(d)
Where he/she deems appropriate, the Village Engineer may require
that pavement construction take place over a two-year period, with
the lower coat being placed in the same year as the underground utilities
are constructed and with the upper coat being placed in the following
year after thorough cleaning and application of a tack coat to the
first coat.
(5)
Roadway base standards.
(a)
After the installation of temporary block corner monuments by
the subdivider and approval of street grades by the Village Engineer,
the subdivider shall grade the full width of the right-of-way of all
streets proposed to be dedicated in accordance with plans and standard
specifications approved by the Village Board, upon the recommendation
of the Village Engineer.
(b)
Cut and filled lands shall be graded to a maximum slope of one
to four or the soil's angle of repose, whichever is the lesser and
covered with permanent vegetation.
(c)
Residential streets shall have a minimum ten-inch-thick, compacted
in-place, crushed limestone aggregate base, gradation No. 2, conforming
to requirements of Section 304 Crushed Aggregate Base Course of "State
of Wisconsin, Standard Specifications For Road and Bridge Construction,"
latest edition, which conforms to following gradation specifications:
|
Sieve Size
|
Percentage Passing by Weight
|
|---|---|
|
3-inch
|
100%
|
|
2 1/2-inch
|
90-100%
|
|
2-inch
|
35-70%
|
|
1 1/2-inch
|
0-15%
|
|
3/4-inch
|
0-5%
|
(d)
On commercial, arterial or other heavy-use streets, as determined by the Village Engineer, a twelve-inch minimum depth crushed limestone aggregate base course, gradation No. 2, shall be constructed upon an inspected and approved subgrade conforming to the specifications in Subsection B(5)(c) above.
(e)
In the case of commercial, arterial or other heavy-use roads,
the Village Board may, in the alternative to the above standards,
have the Village Engineer provide specifications for such roads after
researching the site(s) and conducting a soil analysis for separate
pavement design analysis.
(f)
In any case, the Village Board shall have the sole discretion
in determining the use and construction classification to be adhered
to.
(g)
In all cases, the base course shall be compacted to the extent
necessary to produce a condition so that there will be no appreciable
displacement of material laterally and longitudinally under traffic
and shall conform to line, grades and shape shown on the approved
plans, profiles and cross sections.
(h)
The subdivider shall furnish drawings which indicate the proposed
grades of streets shown on the plat and, after approval of those grades
by the Village Engineer and adoption by the Village Board, the streets
shall be graded to full width of the right-of-way of the proposed
street to the subgrade elevations shown on the typical cross section.
All stumps and trees which cannot be saved, boulders and other similar
items shall be removed by the subdivider.
(6)
Roadway subgrade quality. If deemed necessary by the Village Engineer,
tests may be required according to the following standards:
(a)
All subgrade material shall meet standards required by the Village
Engineer. Inferior subgrade material shall be removed and replaced
with a suitable fill material, or the pavement must be designed to
compensate for the soil conditions.
(b)
Stable and nonorganic subbase material is required. All topsoil
shall be first removed. In addition, all subsoils which have a high
shrink-swell potential, low-bearing capacity when wet, or are highly
elastic shall be removed to a minimum depth of 15 inches below the
top of the subgrade and used outside of the right-of-way. Where both
subsoil and substratum have a high shrink-swell potential and low-bearing
capacity when wet, an underdrain system shall be installed to remove
water from the subbase. Unstable and organic material must be subcut,
removed and replaced with a suitable granular material placed over
a geotextile fabric laid on top of the subgrade. Granular material
shall be approved by Village Engineer. Geotextile material shall be
Type SAS material.
(7)
Roadway grading; ditches. Roads shall be graded to their full width
in accordance with approved plans, plus an additional distance necessary
to establish a four-to-one backslope where ditches are allowed. The
roadway shall be compacted and graded to a subgrade using, where necessary,
approved fill material in accordance with Wisconsin Department of
Transportation standards. Roadside ditches, where allowed by the Village,
shall be a minimum of 26 inches below the finished roadway center-line
elevation, or as approved by the Village Engineer. Debris may not
be buried in the designated road right-of-way. Roadway ditches shall
have a normal slope ratio of 3 to 1 ditch from the edge of the shoulder
to the bottom of the ditch and 2 to 1 on the back slope.
(8)
Pavement thickness.
(a)
Residential and rural-type roads shall have a minimum of 3 1/2
inches thick compacted hot-mix asphalt concrete pavement, placed in
two layers; a binder course of two inches thick and a surface course
of one and one-half inch.
(b)
On commercial, arterial or other heavy-use roads, there shall
be a minimum of four inches of bituminous concrete pavement, placed
in two layers; a binder course of 2 1/2 inches thick and a surface
course of 1 1/2 inches thick.
(c)
The binder course being placed initially upon completion of
the utilities, and the surface course being placed within one year
after the date the binder course was placed. Said surfacing shall
be done in accordance with plans and standard specifications approved
by the Village Board, upon the recommendation of the Village Engineer.
(d)
In the case of commercial, arterial or other heavy-use roads,
the Village Board may, in the alternative to the above standards,
have the Village Engineer provide specifications for paving such roads
with a greater thickness after researching the site(s) and conducting
a soil analysis. In any case, the Village Board shall have the sole
discretion in determining the use and construction classification
to be adhered to. In no event shall paving occur later than 18 months
from the Village's approval of the final or official plat. All subsequent
shouldering where ditches are allowed shall be brought to even grade
with bituminous mat.
(9)
Shoulder width; rural profile streets.
(a)
A shoulder, a minimum of four feet wide on each side of the
road, is required where a curb and gutter is not used, and wider when
required by the "Town Road Standards" as noted in § 82.50,
Wis. Stats.
[Amended at time of adoption of Code (see Ch. 1, General
Provisions, Art. III)]
(b)
Where ditches are allowed, road shoulders shall have a minimum
thickness of 2 1/2 inches of compacted in-place, crushed, state-approved
aggregate base course, over a minimum six inches of compacted in-place,
crushed, state-approved aggregate base course, except that shoulder
thickness shall match the thickness of the pavement, provided that
there is a minimum shoulder thickness of six inches.
(10)
Roadway culverts and bridges. Roadway culverts and bridges shall
be constructed as directed by the Village Engineer and sized utilizing
the methods listed in Chapter 13, entitled "Drainage," of the "Facilities
Development Manual" of the Wisconsin Department of Transportation.
All roadway culverts shall be provided with concrete or metal apron
endwalls. The developer shall provide adequate facilities to provide
surface water drainage as well as free flow outlets for subsurface
drain tile where they are required. Where drainage facilities will
aid in road construction and the stabilization of the road's subgrade,
drainage facilities shall be installed before road construction is
started.
(11)
Driveways.
(a)
Curbs shall not be interrupted by openings for driveways or other accessways to private property unless the number and location of such interruptions have been approved pursuant to Chapter 215, Driveways, of the Village Code.
(c)
Driveway culverts shall be sized by the Director of Public Works or Village Engineer (if appropriate). The culverts shall be placed in the ditch line at elevations that will assure proper drainage, and they shall be provided with concrete, metal or landscape timber endwalls. Driveway culverts shall be installed as prescribed in Chapter 215, Driveways, of the Village Code.
(12)
Topsoil, grass, seed, fertilizer and mulch. All disturbed areas
(ditches, backslopes) within the road right-of-way not provided with
pavement and shouldering material shall be restored utilizing four
inches of topsoil and good quality grass seed, fertilizer and mulch.
Ditches along the roadway shall be protected by erosion control materials
such as hay bales, sod, erosion control mats, etc.
(13)
Drainage improvements. In the case of all new roads and streets,
the Village Engineer may require that stormwater retention areas and
storm sewers be constructed in order to provide for proper drainage.
(14)
Continuity and transitions.
(a)
All street pavement widths on streets continued from previously
developed or platted streets shall, wherever practical, provide for
the greater of either the existing or required pavement type, width,
grade and cross slope.
(b)
Where it is necessary to provide for a transition of pavement
width and/or type between new and existing streets, the transition
shall occur in a safe manner at an intersection. In the event a transition
in pavement width cannot safety occur at an intersection, it shall
not occur closer than 250 feet to the intersection of right-of-way
lines. In width transitions, the ratio of the transition length to
width shall not be less than 15 to 1 unless the Village Engineer determines
that special circumstances prevent use of such ratio, in which case
the minimum transition ratio shall be 10 to 1.
(15)
Curbs and gutters. Combination concrete curbs and gutters are required on all streets. Curbs and gutters in residential areas shall be either barrier-type or mountable-type. Barrier-type curbs and gutters shall have a six-inch barrier curb with a twenty-four-inch flag, except at driveway aprons where a depressed curb shall be constructed. Mountable-type curbs and gutters shall have been 30 inches wide with an eighteen-inch flag. The top of the back of the mountable curb shall be three inches above the gutter flowline. Depress curb shall be constructed at all handicap ramps for sidewalks and bikeways. Said curbs and gutters shall be constructed of concrete, 3,500 PSI strength at 28 days. Expansion joints 1/2 inch thick shall be placed in the curb at each starting and ending of a radius and at intervals not exceeding 300 feet and where otherwise directed by the Village Engineer. Tie bars shall be provided where curbs and gutters are adjacent to rigid pavements. The standards of § 478-27 shall also be complied with.
(16)
Post-construction traffic limited. No vehicular traffic shall
be permitted on the pavement for a minimum period of between 24 and
72 hours following paving, as determined necessary by the Village
Engineer to protect the new pavement.
C.
Final inspection. Upon completion of proposed streets, the Village
Engineer will proceed to make a final inspection, accepting or rejecting
the street as the case may be. After all of the provisions of this
chapter have been complied with, the street will be inspected by Village
officials and, at that time, proof will be made by the presenting
of waivers or liens or receipted bills that all work that has been
done has been paid for, or arrangements have been made for the payment
through written instrument by the subdivider. If the street is rejected,
corrections shall be made as required by the Village Board, upon the
Village Engineer's recommendation, before final inspection can then
be made again. If final acceptance is then made, the owner or owners
shall dedicate to the Village all land necessary for streets. The
subdivider shall warranty the fitness of street improvements for one
year after construction.
A.
Length; arrangement. The lengths, widths and shapes of blocks shall
be appropriate for the topography and the type of development contemplated,
but block length (measured in the long dimension from street center
line to street center line) shall not be less than 600 feet nor exceed
1,500 feet nor have less than sufficient width to provide for two
tiers of lots of appropriate depth between street lines. Blocks shall
be so designated as to provide two tiers of lots, unless it adjoins
a railroad, major thoroughfare, river or park where it may have a
single tier of lots. Culs-de-sac may be used where the interblock
spacing of adjacent streets exceeds the appropriate depth of two tiers
of lots.
B.
Pedestrian pathways. Pedestrian pathway easements not less than 10
feet wide may be required by the Village Board through the center
of a block more than 900 feet long, where deemed essential to provide
circulation or access to schools, playgrounds, shopping centers, transportation
and other community facilities.
C.
Sidewalks. Sidewalks shall be constructed according to the standards in § 399-2 of the Village Code. In areas where sidewalks and bikeways are to be laid to the established grade of the street, the street edge of the sidewalk or bikeway pavement shall be at an elevation above the top of the curb determined by a slope of 1/2 inch per foot times the distance between the curb and the street sidewalk or bikeway edge. The sidewalk or bikeway pavement shall be sloped at a minimum of 1/4 inch per foot and a maximum of 3/4 inch per foot toward the street, unless public drainage is available behind the sidewalk or bikeway.
D.
Bikeways. Bikeways shall be constructed of bituminous pavement, at
least eight feet in width, in accordance with standard Village specifications.
A.
Lot dimension. Area and dimensions of all lots shall conform to the requirements of Chapter 485, Zoning, of the Village Code, for the subdivisions within the Village and to the extraterritorial zoning code (if created) for lands within the Village's extraterritorial jurisdictional limits. When permitted by the Village Board in exceptional situations, those building sites not served by a public sanitary sewerage system or other approved system shall be sufficient to permit the use of an on-site soil absorption sewage disposal system designed in accordance with Ch. SPS 383, Wis. Adm. Code. The width and area of lots located on soils suitable for the use of an on-site soil absorption sewage disposal system shall not be less than 150 feet in width and 40,000 square feet in area.
[Amended at time of adoption of Code (see Ch. 1, General
Provisions, Art. III)]
B.
Depth of lots. Excessive depth in relation to width shall be avoided
and a proportion of three to two shall be considered a desirable ratio
under normal conditions. Depth of lots or parcels reserved or laid
out for commercial or industrial use shall be adequate to provide
for off-street service and parking required by the use contemplated.
C.
Width of lots. Width of lots shall conform to the requirements of Chapter 485, Zoning, or other applicable ordinance, and in no case shall a lot be less than 100 feet in width at the building setback line.
D.
Lands lying between meander line. Lands lying between the meander
line and the water's edge and any otherwise unplattable lands which
lie between a proposed subdivision and the water's edge shall be included
as part of lots, out-lots or public dedications in any plat abutting
a lake or stream.
E.
Commercial or industrial lots. Depth and width of properties reserved or laid out for commercial or industrial purposes shall be adequate to provide for the off-street service and parking facilities required by the type of use and development contemplated, as required by Chapter 485, Zoning, of this Code.
F.
Minimum lot frontage. In addition to the standards in Subsection C above, all lots on curved streets or culs-de-sac shall have a minimum of 40 feet of platted frontage on a public street (100 feet at the building setback line) to allow access by emergency and service motor vehicles unless part of a planned unit development approved by the Village Board. Alley frontage (public or private) shall not constitute meeting this minimum frontage requirement.
G.
Lots where abutting arterial highway. Residential lots adjacent to
major and minor arterial streets and highways and/or railroads shall
be platted with an extra 15 feet of lot and an extra 15 feet of minimum
yard setback and shall otherwise be designed to alleviate the adverse
effects on residential adjacent lots platted to the major street,
highway, railroad or other such features.
H.
Corner lots. Corner lots for residential use shall have extra width
of 15 feet to permit full building setback from both streets, or as
required by applicable zoning regulations.
I.
Access to public street. Every lot shall front or abut on a public
street. Every lot shall front or abut on a public street for a distance
of at least 40 feet.
J.
Side lots. Side lot lines shall be substantially at right angles
to or radial to abutting street center lines. Lot lines shall follow
Village boundary lines.
K.
Double and reversed frontage lots. Double frontage and reversed frontage
lots shall be avoided except where necessary to provide separation
of residential development from traffic arteries or to overcome specific
disadvantages of topography and orientation.
L.
Natural features. In the dividing of any land, regard shall be shown
for all natural features, such as tree growth, watercourses, historic
spots or similar conditions, which, if preserved, will add attractiveness
and stability to the proposed development.
M.
Land remnants. All remnants of lots below minimum size left over
after dividing of a larger tract must be added to adjacent lots or
a plan shown as to future use rather than allowed to remain as unusable
parcels.
N.
Large lots. In case a tract is divided and results in parcels of more than twice the minimum lot size provided for by Chapter 485, Zoning, for the zoning district in which the land is located, such parcels shall be so arranged to permit redividing into parcels in accordance with this chapter and with Chapter 485.
O.
Trunk highway proximity. All lots adjacent to state trunk and federal
highways shall be platted with additional depth necessary to provide
for a building setback line not less than 50 feet from the nearer
right-of-way line or 110 feet from the center line, whichever is more
restrictive (Ref. Wis. Adm. Code Ch. Trans 233). The subdivider may
appeal this requirement to the Village Engineer. Upon written request
of the Village Engineer, the Wisconsin Department of Transportation
is hereby authorized to then determine building setback requirements
equal to or less than those required above in all land divisions (including
certified surveys) adjacent to state and federal highways in accordance
with the authority granted in the Administrative Code. The required
building setback line and additional lot depth shall be platted so
as to accommodate such required building setbacks.
[Amended at time of adoption of Code (see Ch. 1, General
Provisions, Art. III)]
P.
Easement allowance. Lots containing pedestrian or drainage easements
shall be platted to include additional width in allowance for the
easement.
Q.
Drainageway and watercourses. Lots abutting upon watercourse, drainageway,
channel or stream shall have such additional depth or width as required
by the Village Engineer to obtain building sites that are not subject
to flooding from a post-development 100-year storm.
A.
Purpose.
(1)
The subdivider shall construct stormwater drainage facilities adequate
to serve the subdivision, which may include curbs and gutters, catch
basins and inlets, storm sewers, road ditches, open channels, water
retention structures and settling basins. All such facilities shall
be of adequate size and grade to hydraulically accommodate the maximum
potential volumes of flow and shall be so designed as to prevent and
control soil erosion and sedimentation and to present no hazards to
life or property.
(2)
Shoreland drainage facilities shall, if required, include water retention
structures and settling basins so as to prevent erosion and sedimentation
where such facilities discharge into streams or lakes. The design
criteria, the size, type, grades and installation of all stormwater
drains and sewers and other cross section, invert and erosion control
paving check dams, flumes or other energy dissipating structures and
seeding and/or sodding of open channels and unpaved road ditches proposed
to be constructed shall be in accordance with the plans and standard
specifications approved by the Village Engineer.
(3)
The subdivider shall assume the cost of installing all storm sewers
of 36 inches or smaller within the proposed subdivision, except for
the added cost of installing storm sewers greater than 36 inches which
are necessary to serve tributary drainage areas lying outside of the
proposed subdivision. In addition, the subdivider shall pay to the
Village a storm sewer trunk line connection fee based on the added
cost of installing larger sewers in the total tributary drainage area,
which shall be prorated in proportion to the ratio which the total
area of the proposed plat is to the total drainage area to be served
by such larger sewers.
(4)
The following provisions in this section are established to preserve
and provide properly located public sites and facilities for drainage
and stormwater management as the community develops and to insure
that the costs of providing and developing such public sites are equitably
apportioned on the basis of serving the need for the management of
increased stormwater quantities resulting from land development.
B.
Drainage system required.
(1)
As required by § 478-31, a drainage system shall be designed and constructed by the subdivider to provide for the proper drainage of the surface water of the land division and the drainage area of which it is a part. Post-development peak runoff rates shall be limited to predevelopment levels, up to and including twenty-five-year return period storms. A final plat shall not be approved until the subdivider shall submit plans, profiles and specifications as specified in this section, which have been prepared by a registered professional engineer and approved or modified by the Village Board, upon the recommendations of the Plan Commission and Village Engineer.
(2)
Lots shall be laid out so as to provide positive drainage away from
all buildings, and individual lot drainage shall be coordinated with
the general storm drainage pattern for the area. Drainage shall be
designed so as to avoid concentration of storm drainage water from
each lot to adjacent lots.
(3)
The Plan Commission shall not recommend for approval nor shall the
Village Board approve any subdivision plat which does not provide
adequate means for stormwater or floodwater runoff. Any stormwater
drainage system will be separate and independent of any sanitary sewer
system. Storm sewers, where necessary, shall be designed in accordance
with all governmental regulations, and a copy of design computations
for engineering capacities shall accompany plans submitted by the
planning engineer for the final plat. When calculations indicate that
curb capacities are exceeded at a point, no further allowance shall
be made for flow beyond that point, and basins shall be used to intercept
flow at that point.
C.
Drainage system plans.
(1)
The subdivider shall submit to the Village at the time of filing
a final plat a drainage plan or engineering report on the ability
of existing watercourse channels, storm sewers, culverts and other
improvements pertaining to drainage or flood control within the subdivision
to handle the additional runoff which would be generated by the development
of the land within the subdivision. Additional information shall be
submitted to adequately indicate that provision has been made for
disposal of surface water without any damage to the developed or undeveloped
land downstream or below the proposed subdivision. The report shall
also include:
(2)
A grading plan for the streets, blocks and lots shall be submitted
by the subdivider for the area within the subdivision.
(3)
The design criteria for storm drainage/detention systems shall be
based upon information provided by the Village Engineer, and a plan
for permanent maintenance.
(4)
Material and construction specifications for all drainage projects
(i.e., pipe, culverts, seed, sod, etc.) shall be in compliance with
specifications provided by the Village Engineer.
D.
Drainage system requirements. The subdivider shall install all the storm drainage facilities indicated on the plans required in Subsection A of this section necessary to serve, and resulting from, the phase of the land division under development:
(1)
Street drainage. All streets shall be provided with an adequate storm
drainage system. The street storm system shall serve as the minor
drainage system and shall be designed to carry street, adjacent land
and building stormwater drainage. Stormwater shall not be permitted
to be run into the sanitary sewer system within the proposed subdivision.
(2)
Off-street drainage. The design of the off-street major drainage system shall include the entire watershed affecting the land division and shall be extended to a watercourse or ditch adequate to receive the storm drainage. When the drainage system is outside of the street right-of-way, the subdivider shall make provisions for dedicating an easement pursuant to Subsection F of this section to provide for the future maintenance of said system.
[Amended at time of adoption of Code (see Ch. 1, General
Provisions, Art. III)]
E.
Protection of drainage systems. The subdivider shall adequately protect
all ditches to the satisfaction of the Village Engineer. Ditches and
open channels shall be seeded, sodded or paved depending upon grades
and soil types. (Generally ditches or channels with grades up to 1%
shall be seeded; those with grades up to 4% shall be sodded.)
F.
Drainage easements. Where a land division is traversed by a watercourse,
drainageway, channel or stream:
(1)
There shall be provided a stormwater easement or drainage right-of-way
conforming substantially to the lines of such watercourse and such
further width or construction, or both, as will be adequate for the
purpose and as may be necessary to comply with this section; or
(2)
The watercourse, drainageway, channel or stream may be relocated
in such a manner that the maintenance of adequate drainage will be
assured and the same provided with a stormwater easement or drainage
right-of-way conforming to the lines of the relocated watercourse,
and such further width or construction, or both, as will be adequate
for the purpose and may be necessary to comply with this section;
or
(3)
Wherever possible, drainage shall be maintained in an easement by
an open channel with landscaped banks and adequate width for maximum
potential volume flow. In all cases, such easements shall be of a
minimum width established at the high-water mark or, in the absence
of such specification, not less than 30 feet.
G.
Dedication of drainageways. Whenever a parcel is to be subdivided or consolidated and embraces any part of a drainageway identified on a Village comprehensive stormwater management plan, Master Plan and/or Official Map or any portion thereof, such part of said existing or proposed public drainageway shall be platted and dedicated by the subdivider as an easement or right-of-way in the location and at the size indicated along with all other streets and public ways in the land division. Maintenance arrangements shall be as prescribed in Subsection J below. Whenever any parcel is to be subdivided or consolidated and is part of a drainage district established under the authority of Chapter 88, Wis. Stats., the subdivider shall petition the Circuit Court to transfer the jurisdiction of that portion of the drainage district being subdivided or consolidated to the Village in accordance with § 88.83, Wis. Stats.
H.
Dedication/preservation of stormwater management facilities. The
subdivider shall dedicate sufficient land area for the storage of
stormwater to meet the needs to be created by the proposed land development
and in accordance with the standards for on-site detention and as
determined by the Village Engineer. Whenever a proposed stormwater
management facility (e.g., detention or retention basin) shown on
the comprehensive stormwater management plan, Master Plan and/or Official
Map is located, in whole or in part, within the proposed land division,
ground areas for providing the required storage capacity in such proposed
public facility shall be dedicated to the public or property owners'
association, as determined by the Village, to the requirements of
the Master Plan and/or Official Map. Storage areas necessary to serve
areas outside the land division shall be held in reserve for a period
of five years from the date of final plat approval for future dedication
to the Village or other appropriate agency.
I.
Storm drainage facilities.
(1)
The subdivider, at his/her cost, shall install all drainage facilities
identified in the erosion control plan or determined by the Village
Engineer as being necessary for the management of all lands and roadways
within the development. In addition, drainage capacity through the
development from other areas shall be provided in accordance with
a Comprehensive Surface Water Management Study, if applicable. All
required storm drainage facilities shall be constructed and operational
prior to acceptance of any dedications and/or public improvements
served by the storm drainage facilities.
(2)
The subdivider shall submit to the Village Engineer for his/her review
and approval a report on the ability of existing watercourse channels,
storm sewers, culverts and other improvements pertaining to drainage
or flood control within the land division to handle the additional
runoff which would be generated by the development of the land within
the land division. Additional information shall be submitted to adequately
indicate that provision has been made for disposal of surface water
without any damage to the developed or undeveloped land downstream
or below the proposed land division. The report shall also include:
(3)
A grading plan for the streets, blocks and lots shall be submitted
by the subdivider for the area within the land division.
(4)
The design criteria for storm drainage systems shall be reviewed
by the Village Engineer and approved or modified.
(5)
Material and construction specifications for all drainage projects
(i.e., pipe, culverts, seed, code, etc.) shall be in compliance with
standards and specifications provided by Village ordinance and/or
the Village Engineer.
J.
Maintenance.
(1)
A maintenance agreement shall be required between the Village and the subdivider. The agreement shall be recorded as a property deed restriction by the subdivider with the County Register of Deeds in a form which shall be binding upon all subsequent owners of land covered by the agreement. Such agreement shall assign ongoing responsibility for maintenance and repair of the stormwater management system, including detention/retention facilities and drainageways, to a homeowners, property owners or condominium association per § 478-13. Prior to final plat approval, the subdivider shall submit to the Village for its approval an ongoing maintenance and mowing plan for such facilities, which shall be incorporated by reference into all approvals and development agreements. In the alternative, if unique circumstances or a special benefit to the public can be demonstrated, such ownership and maintenance responsibility may be assumed by the Village.
(2)
If the Village at any time finds that the stormwater management measures
constructed in accordance with the system plan are not being properly
maintained, or if altered in any way from the location, configuration
and capacity of the measures specified in the approved plan, the Village
shall have the right to undertake the needed maintenance or repair.
This right shall include the right to enter onto private property
as necessary to carry out the needed maintenance or repair. The cost
of such maintenance or repair shall be levied as a special assessment
or special charge against the properties concerned. The special charge
or assessment shall be collectible in the same manner as all other
special assessments/charges levied by the Village.
K.
Minor drainage system. The subdivider shall install all minor drainage
system components necessary to reduce inconvenience and damages from
frequent storms. Minor drainage components shall include all inlets,
piping, gutters, channels, ditching, pumping and other facilities
designed to accommodate the post-development runoff resulting from
a ten-year, twenty-four-hour rainfall event as determined in the most
current edition of the U.S. Natural Resources Conservation Service
Technical Release 55 (TR 55) or the Rational Method. Temporary accumulations
of storm runoff from ponding or flowing water, in or near minor system
components, shall be permitted providing such accumulations do not
allow the water to flow across the crown of the street from one side
to the other. For arterial streets and streets located in commercial
districts, ponding within normal traffic lanes (10 feet on each side
of the center line of the street) is prohibited. In drainageways and
drainageway easements, accumulations of water shall not inundate beyond
the limits of the drainageway or drainageway easement. Cross-street
drainage channels (valley gutters) shall not be permitted except on
cul-de-sac or permanent dead-end streets serving less than 10 dwelling
units and where the minimum grade in the valley gutter and street
gutter between the valley gutter and the next downstream drainage
inlet is not less than 1%.
L.
Major drainage system. The subdivider shall install all major drainage
system components necessary to reduce inconvenience and damages from
infrequent storms. Major system components shall include large channels
and drainageways, streets, easements and other paths and shall be
capable of accommodating post-development runoff in excess of that
accommodated by minor system components resulting from twenty-four-hour
rainfall events for storms with return frequencies greater than two
years up to and including the 100-year return event (as identified
in TR 55). Runoff resulting from a 100-year, twenty-four-hour rainfall
event shall be contained within the street right-of-way or designated
storm drainage easement or detention facility.
M.
Drainage piping systems.
(1)
Unless otherwise approved by the Village Engineer, all drainage piping
of 12 inches diameter and greater in street rights-of-way shall be
constructed of Class 3 reinforced concrete or PVC pipe. Piping materials
outside of rights-of-way shall be subject to approval of the Village
Engineer. All storm sewer outlets shall be equipped with steel bar
or iron pipe debris gates.
(2)
Agricultural drain tiles which are disturbed during construction
shall be restored, reconnected or connected to public storm drainage
facilities.
N.
Open channel systems.
(1)
Unpaved road ditches and street gutters shall be permitted only within
the Village's extraterritorial plat approved jurisdictional area and
shall be shaped and seeded and/or sodded as grassed waterways. Where
the velocity of flow is in excess of four feet per second on soils
having a severe or very severe erosion hazard and in excess of six
feet per second on soils having moderate, slight, or very slight erosion
hazard, the subdivider shall install check dams, flumes, or other
energy-dissipating devices.
(2)
Where open channels are utilized in either the minor or major drainage
system, they shall be designed so as to minimize maintenance requirements
and maximize safety. Drainage easements (in lieu of dedications) shall
be utilized to accommodate open channels, provided there is adequate
access by the Village for maintenance of drainage capacity. Side slopes
shall not exceed a four-to-one slope. Drainageways, where subject
to high groundwater, continuous flows, or other conditions as determined
by the Village Engineer that would hamper maintenance operations due
to consistently wet conditions, shall have a paved concrete invert
of not less than eight feet wide and side slopes to a point one foot
above the channel invert.
(3)
In areas where invert paving is not required, the drainageway bottom
shall be grass. If the drainageway has a bare soil bottom or the natural
grasses in the drainageway are disturbed due to development operations,
the drainageway bottom shall be sodded and securely staked to one
foot above the elevation of inundation resulting from a predevelopment
five-year, twenty-four-hour storm event. Other disturbed areas shall
be seeded and prepared in accordance with the Village's erosion control
requirements. Velocities for grass-lined channels shall not exceed
those presented in the Village's Surface Water Management Study, if
one is adopted.
O.
Standards for on-site detention storage. When the subdivider employs
on-site detention to control erosion and sedimentation, reduce the
post-development peak runoff rate or temporarily store stormwater
runoff due to inadequate downstream drainage facilities, the detention
(storage) facilities shall be subject to regulation in accordance
with the following standards:
(1)
Temporary on-site detention for erosion and sedimentation control
shall be designed in conformance with the "Wisconsin Construction
Site Best Management Practices Handbook."
(2)
Where on-site detention is permanently employed to reduce the post-development
peak runoff, the detention facility shall safety contain the post-development
runoff from a twenty-five-year storm event of 24 hour duration within
the limits of the facility.
(3)
Post-development peak runoff rates shall be limited to predevelopment
levels, up to and including twenty-five-year return period storms.
Curve numbers of 30, 58, 71 and 78 for Hydrologic Soil Groups A, B,
C and D, respectively, shall be used when computing predevelopment
runoff rates.
(4)
All detention facilities shall safely contain or pass the runoff
from any storm of any duration which exceeds the maximum storm required
to be contained up to the 100-year storm event of twenty-four-hour
duration.
(5)
All permanent detention facilities shall safely contain the runoff
from the 100-year storm event of twenty-four-hour duration on both
public and, if necessary, private properties without inundating any
building at the ground elevation, the travel lanes of any arterial
street, the center 10 feet of any collector street or the top of the
curb on any local street.
(6)
Determination of on-site detention volumes shall be computed by procedures
established by the United States Natural Resources Conservation Service
in the most current edition of its technical publication entitled
"Urban Hydrology for Small Watersheds, TR-55 or TR-20," and as accepted
and approved by the Village Engineer.
(7)
The storage of stormwater runoff shall not encroach on any public
park (except parks designed with detention facilities) or any private
lands outside the land division unless an easement providing for such
storage has been approved and recorded for said lands.
(8)
All detention facilities shall be designed with the safety of the
general public and any considerations for ease of maintenance as top
priorities.
(9)
Any wet detention facilities shall include riprap to not less than
two feet above the normal pool elevation for protection from wave
action or other slope stabilization methods approved by the Village
Engineer for protection from wave action.
(10)
The sides of all detention facilities shall have a maximum slope
ratio of 4 to 1(horizontal to vertical), with flatter slopes being
required where determined practical by the Village Engineer.
(11)
The Village Board, upon recommendation by the Village Engineer,
may require the installation of fencing or other such security measures
in detention facilities with excessively long down times or permanent
water features or other features requiring additional security for
safety reasons.
A.
General.
(1)
If a proposed subdivision includes land that is zoned for commercial
or industrial purposes, the layout of the subdivision with respect
to such land shall make such provisions as the Village may require.
(2)
A nonresidential subdivision shall also be subject to all the requirements for site plan approval set forth in Chapter 173, Building Construction, or Chapter 485, Zoning. Nonresidential subdivision shall be subject to all the requirements of this chapter, as well as such additional standards required by the Village, and shall conform to the proposed land use standards established by any Village Comprehensive Plan or Official Map and Chapter 485, Zoning.
B.
Standards. In addition to the principles and standards in this chapter,
which are appropriate to the planning of all subdivisions, the applicant
shall demonstrate to the satisfaction of the Village Board that the
street, parcel and block pattern proposed is specifically adapted
to the uses anticipated and takes into account other uses in the vicinity.
The following principles and standards shall be observed:
(1)
Proposed industrial parcels shall be suitable in area and dimensions
to the types of industrial development anticipated.
(2)
Street rights-of-way and pavement shall be adequate to accommodate
the type and volume of traffic anticipated to be generated thereupon.
(3)
Special requirements may be imposed by the Village Board, upon the
recommendation of the Village Engineer, with respect to street, curb,
gutter and sidewalk design and construction.
(4)
Special requirements may be imposed by the Village Board, upon the
recommendation of the Village Engineer, with respect to the installation
of public utilities, including water, sewer and stormwater drainage.
(5)
Every effort shall be made to protect adjacent residential areas
from potential nuisance from a proposed commercial or industrial subdivision,
including the provision of extra depth in parcels backing-up on existing
or potential residential development and provisions for permanently
landscaped buffer strips when necessary.
(6)
Streets carrying nonresidential traffic, especially truck traffic,
shall not normally be extended to the boundaries of adjacent existing
or potential residential areas.
The subdivider shall grade each land division in order to establish
street, block and lot grades in proper relation to each other and
to topography, as follows:
A.
Master site grading plan.
(1)
A master site grading plan shall be prepared by the subdivider for
all new subdivisions. This plan shall be prepared in accordance with
the requirements and standards of the Village.
(2)
The master site grading plan shall show existing and proposed elevations
of all lot corners, control points and building locations. The plan
shall also indicate all overland storm drainage in and adjacent to
the subdivision. The cost of the preparation of such a plan shall
be paid for by the subdivider. Grading plans shall include topographic
contours at one-foot intervals. Grading plans shall show top of foundation
elevations for proposed lots and at existing structures on surrounding
properties.
(3)
After approval or modification of these plans by the Village Engineer,
the full width of the right-of-way of the proposed streets within
the subdivision and the entire subdivision lot area shall be graded
in accordance with the master site grade plan. The owners of the subdivision
lots shall adhere to those plans.
(4)
The Village Engineer shall be contacted to inspect and approve the
grading and related work at each of the following stages:
(5)
The cost of all required grading work, supervision, certification,
inspection and engineering fees shall be paid for by the subdivider.
B.
Right-of-way grading. The subdivider shall grade the full width of
the right-of-way of all proposed streets in accordance with the approved
plans, including the grading of site triangles at each intersection.
C.
Block grading. Block grading shall be completed by one or more of
the following methods:
(1)
Regrading along the side or rear lot lines which provides for drainage
to the public drainage facilities, provided any ditches or swales
are in public drainage easements and provided that a deed restriction
is adopted which prohibits alteration of the grades within five feet
of any property line from the grades shown on the master site grading
plan.
(2)
Parts of all lots may be graded to provide for drainage to a ditch
or to a swale.
D.
Miscellaneous grading requirements.
(1)
Lot grading shall be completed so that water drains away from each
building site toward public drainage facilities at a grade approved
by the Village Engineer and provisions shall be made to prevent drainage
onto properties adjacent to the land division unless to a public drainage
facility. Buildable lots shall be graded so that the elevation of
each building site is at least one foot to two feet above the center-line
elevation of the adjacent public street.
(2)
Grading activities shall not result in slopes greater than 3 to 1
on public lands or lands subject to public access. Cut on filled land
shall be graded to a maximum slope of 3 to 1.
(3)
The topsoil stripped for grading shall not be removed from the site
unless identified in the erosion control plan approved by the Village
Engineer as not being necessary for erosion control or site landscaping
purposes. Topsoil shall be uniformly returned to the lots when rough
grading is finished. Topsoil piles shall be leveled and seeded for
erosion control prior to the Village releasing the one-year guarantee
provision on public improvements in the streets adjacent to the lots
on which the topsoil is stockpiled.
(4)
Such grading shall not result in detriment to any existing developed
lands, either within or outside of the corporate limits.
(5)
The Village Board shall require the subdivider to provide or install
certain protection and rehabilitation measures, such as fencing, sloping,
seeding, riprap, revetments, jetties, clearing, dredging, snagging,
drop structures, brush mats, willow poles and grade stabilization
structures. Seeding of the site shall occur within 30 days of rough
grading.
(6)
Tree cutting and shrubbery clearing shall not exceed 50% of the lot
or tract and shall be so conducted as to prevent erosion and sedimentation;
preserve and improve scenic qualities; and, during foliation, substantially
screen any development from stream or lake users.
(7)
Paths and trails in wooded and wetland areas shall not exceed 10
feet in width unless otherwise approved by the Village Board, and
shall be so designed and constructed as to result in the least removal
and disruption of trees and shrubs, and the minimum impairment of
natural beauty.
(8)
Earthmoving, such as grading, topsoil removal, mineral extraction,
stream course changing, road cutting, waterway construction or enlargement,
removal of stream or lake bed materials, excavation, channel, clearing,
ditching, drain tile laying, dredging, and lagooning, shall be so
conducted as to prevent erosion and sedimentation and to least disturb
the natural fauna, flora, watercourse, water regimen, and topography.
(9)
Review of the conduct of such cutting, clearing, and moving may be
requested of the County Soil and Water Conservation District Supervisors,
the State District Fish and Game Managers, and the State District
Forester by the Village Engineer or Plan Commission, as they deem
appropriate.
E.
Drainage flows. The subdivider shall cause to be set upon the master
grading plan arrows indicating the directions of drainage flows for
each property line not fronting on a street on all parcels and along
each street as will result from the grading of the site, the construction
of the required public improvements, or which are existing drainage
flows and will remain. The arrows indicating the directions of flows
shall be appropriately weighted so as to differentiate between the
minor and major (100-year event) drainage components. The arrows shall
be accompanied on the master grading plan with the following note:
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"Arrows indicate the direction of drainage flows in various
components resulting from site grading and the construction of required
public improvements. The drainage flow components located in easements
shall be maintained and preserved by the property owner unless approved
by the Village Engineer."
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The Village finds that urbanizing land uses have accelerated the process of soil erosion, runoff and sediment deposition in the waters of the Village. Therefore, it is declared to be the purpose of this section to control and prevent soil erosion and minimize stormwater runoff increases and thereby to preserve the natural resources, control floods and prevent impairment of dams and reservoirs, protect the quality of public waters, protect wildlife, protect the tax base, and protect and promote the health, safety and general welfare of the people of the Village. All land disturbing activities shall be subject to the provisions of Chapter 208, Construction Site and Stormwater Runoff Management, of the Village Code.
