[HISTORY: Adopted by the Village Board of the Village of Williams Bay as indicated in article histories. Amendments noted where applicable.]
[Adopted as § 15.02 of the 2011 Code]
The intent of these regulations is to require control practices that will reduce the amount of sediment and other pollutants leaving construction sites during land development or land disturbing activities. These regulations apply to all land disturbing construction activities in the Village and within its extraterritorial review powers of Ch. 236, Wis. Stats. These regulations set forth different procedures for different activities depending upon the size, type and location of the activities.
This article is adopted under § 61.354, Wis. Stats.
A. 
Findings. The Village Board finds runoff from construction sites carries a significant amount of sediment and other pollutants to the waters of the state and Village.
B. 
Purpose. It is the purpose of this article to preserve the natural resources; protect the quality of water of the state and Village and protect and promote the health, safety and welfare of the people to the extent practicable by minimizing the amount of sediment and other pollutants carried by runoff or discharges from construction sites to Geneva Lake and other waters and wetlands of the Village and state.
This article applies to land disturbing and land developing activities on lands within the boundaries and jurisdiction of the Village and the public and private lands subject to extraterritorial review under Ch. 236, Wis. Stats. All state-funded or -conducted construction is exempt from these regulations.
The following terms shall have the meanings indicated:
AGRICULTURAL LAND USE
Use of land for planting, growing, cultivation and harvesting crops for human or livestock consumption and pasturing or yarding of livestock.
COMMERCIAL LAND USE
Use of land for retail or wholesale sale of goods or services.
CONSTRUCTION SITE CONTROL MEASURE
A control measure used to meet the requirements of this article.
CONTROL MEASURE
A practice or combination of practices to control erosion and attendant pollution.
CONTROL PLAN
A written description of the number, locations, sizes and other pertinent information of control measures designed to meet the requirements of this article submitted by the applicant for review and approval by the Building Inspector.
EROSION
The detachment and movement of soil, sediment or rock fragments by water, wind, ice or gravity.
LAND DEVELOPING ACTIVITY
The construction of buildings, roads, parking lots, paved storage areas and similar facilities.
LAND DISTURBING CONSTRUCTION ACTIVITY
Any man-made change of land surface, including removing vegetative cover, excavating, filling and grading, but not including agricultural land uses, such as planting, growing, cultivating and harvesting crops; growing and tending gardens; harvesting trees; and landscaping modifications.
LAND USER
Any person operating, leasing, renting or having made other arrangements with the landowner by which the landowner authorizes use of his land.
LANDOWNER
Any person holding title to or having an interest in land.
PERMITTEE
Landowner, land user, designated agent or applicant for permit.
RUNOFF
The rainfall, snow melt or irrigation water flowing over the ground surface.
SITE
The entire area included in the legal description of the land on which the land disturbing or land development activity is proposed in the permit application.
VEGETATION REMOVAL
Elimination of living vegetation or cutting or injuring vegetation so the vegetation dies.
WISCONSIN CONSTRUCTION SITE BEST MANAGEMENT PRACTICE HANDBOOK
The most recent published version with appropriate updates, prepared by the Wisconsin Department of Natural Resources Nonpoint Source and Land Management Section, a copy of which is filed in the Village Clerk's office.
All control measures required to comply with this article shall meet the design criteria, standards and specifications for the control measures based on accepted design criteria, standards and specifications identified by the Building Inspector and in accordance with, but not limited to, the Wisconsin Construction Site Best Management Practice Handbook.
All sedimentation basin and other control measures necessary to meet the requirements of these regulations shall be maintained by the applicant or subsequent landowner during the period of land disturbance and land development of the site in a satisfactory manner to ensure adequate performance and to prevent nuisance conditions.
A. 
Applicability. Any land disturbing or developing activity shall be subject to the erosion and sediment control provisions of this article if:
(1) 
Any buildings or additions thereto are proposed to be constructed on platted subdivision lots or lots created by certified survey maps.
(2) 
An area of 1,000 square feet or greater will be disturbed by excavation, grading, filling or other earthmoving activities, resulting in a loss or removal of protective ground cover or vegetation.
(3) 
Excavation, fill or any combination thereof will exceed 50 cubic yards. Excavation and filling of less than 50 cubic yards, at the discretion of the Building Inspector, may require control of erosion and pollutants, if judged necessary.
(4) 
Any watercourse is to be changed, altered, enlarged or materials are removed from a stream or lakebed.
(5) 
Any utility work in which underground conduits, piping, wiring, waterlines, sanitary sewers, storm sewers or similar structures will be laid, repaired, replaced or enlarged if such work involves more than 300 linear feet of earth disturbance. Construction of municipal utility projects supervised by the Village Engineer shall not be required to obtain a separate permit under this article.
(6) 
Any disturbed area where the slope is equal to or greater than 12%.
(7) 
In those cases where land disturbing construction or vegetation removal activities are located within 500 feet of the ordinary high water mark of Geneva Lake or within 200 feet of the ordinary high water mark of any navigable stream.
B. 
Erosion and other pollutant control requirements. The following requirements shall be met on all sites described in Subsection A above and shall be done in accordance with, but not limited to, the Wisconsin Construction Site Best Management Practice Handbook or this article.
(1) 
Discharge water. Discharge water shall be handled in a manner consistent with all current statutory and regulatory requirements and may not be discharged in a manner that causes erosion of the site or receiving channels.
(2) 
Waste and material disposal. All waste and unused building materials, including garbage, debris, cleaning wastes, wastewater, toxic material or hazardous materials, shall be properly disposed of and not allowed to be carried by runoff into a receiving lake, stream channel or storm sewer system.
(3) 
Tracking. Each site shall have graveled roads, access drives and parking areas of sufficient width and length to prevent sediment from being tracked onto public or private roadways. Any sediment reaching a public or private road shall be removed by street cleaning (not flushing) before the end of the workday.
(4) 
Drain inlet protection. All storm drain inlets shall be protected with a straw bale, filter fabric or equivalent barrier meeting accepted design criteria, standards and specifications.
(5) 
Vegetation removal. All vegetation removal will be kept to a minimum as needed to allow for construction of buildings, patios, decks or the installation of utilities throughout parcels as determined by the Building Inspector.
(6) 
Site erosion control. Only if runoff leaves any land development site or site of land disturbance will the following criteria apply:
(a) 
Channelized runoff from adjacent areas passing through the site shall be diverted around disturbed areas, if practical. Otherwise the channel shall be protected as described below in Subsection B(6)(c). Diverted runoff shall be conveyed in a manner that will not erode the conveyance and receiving channels.
(b) 
All activities on the site shall be conducted in a logical sequence to minimize the area of any soil exposed at any one time. This shall include the planting of vegetative cover within seven days of land disturbance.
(c) 
Runoff from the entire disturbed area on the site shall be controlled by meeting either Subsection B(6)(c)[1] and [2] below or Subsection B(6)(c)[1], [2] and [3] below:
[1] 
All disturbed ground left inactive for seven or more days or seven days after final grading shall be stabilized by seeding or sodding or by mulching or covering.
[2] 
Filter fences as specified in the Wisconsin Construction Site Best Management Practice Handbook or equivalent control measures shall be placed along all side slope and down slope areas of the site. If straw bales or hay bales are used as control measures, they shall be replaced not less frequently than every 90 days or more frequently if determined to be noneffective by the Building Inspector. No Visqueen or similar plastic filtering material shall be used. Appropriate control measures shall be maintained until adequate vegetative ground cover has been established on the site.
[3] 
For sites with five acres or more disturbed at one time or if a channel originates in the disturbed area, one or more sedimentation basins shall be constructed. The basin discharge rate shall also be sufficiently low as to not cause erosion along the discharge channel or the receiving water.
No landowner or land user may commence a land disturbance or land development activity subject to these regulations without receiving prior approval of a control plan for the site and a permit from the Building Inspector. At least one landowner and land user controlling or using the site and desiring to undertake a land disturbing or land developing activity subject to these regulations shall submit an application for a permit and a control plan and pay an application fee to the Building Inspector. By submitting an application, the applicant is authorizing the Building Inspector to enter the site to obtain information required for the review of the control plan. All appropriate measures are to be installed prior to the issuance of a building permit or commencement of construction.
A. 
Content of erosion control statement for land disturbing activities that do not exceed 20,000 square feet in area. An erosion control plan statement with a simple map shall be submitted to briefly describe the site and erosion controls, including the site development schedule that will be used to meet the requirements of this article.
B. 
Content of the erosion control plan for land disturbing activities where such activities exceed 20,000 square feet in area.
(1) 
Existing site map. A map of existing site conditions, including structures, on a scale of at least one inch equals 100 feet showing the site and immediately adjacent areas within 50 feet of the property boundary.
(a) 
Site boundaries and adjacent lands which accurately identify site location.
(b) 
Lakes, streams, wetlands, channels, ditches and other watercourses on and immediately adjacent to the site.
(c) 
One-hundred-year floodplains.
(d) 
Location of the predominant soil types.
(e) 
Vegetative cover.
(f) 
Location and dimensions of stormwater drainage systems and natural drainage patterns on and immediately adjacent to the site.
(g) 
Locations and dimensions of utilities, structures, roads, highways and paving.
(h) 
Site topography at a contour interval not to exceed five feet.
(2) 
Plan of final site conditions. A plan of final site conditions on the same scale as the existing site map showing the site changes.
(3) 
Site construction plan. A site construction plan including:
(a) 
Locations and dimensions of all proposed land disturbing activities.
(b) 
Locations and dimensions of all temporary soil or dirt stockpiles.
(c) 
Locations and dimensions of all construction site management control measures necessary to meet the requirements of these regulations.
(d) 
Schedule of anticipated starting and completion dates of each land disturbing or land developing activity, including the installation of construction site control measures needed to meet the requirements of these regulations.
(e) 
Provisions for maintenance of the construction site control measures during construction.
(f) 
Identification of all trees in excess of five inches at four feet above grade that will be removed.
C. 
Review of control plan or statement. Within 30 days of receipt of the application, control plan or control plan statement and fee, the Building Inspector shall review the application and control plan or control statement to determine if the requirements of these regulations are met. The Building Inspector may request comments from other departments, agencies or the Village Engineer. If the requirements of these regulations are met, the Building Inspector shall approve the plan, inform the applicant and issue a permit. If the conditions are not met, the Building Inspector shall inform the applicant in writing and may either require needed information or disapprove the plan. Within 10 days of receipt of needed information, the Building Inspector shall again determine if the plan or statement meet the requirements of these regulations. If the plan or statement is disapproved, the Building Inspector shall inform the applicant in writing of the reasons for the disapproval.
D. 
Permits.
(1) 
Duration. Permits shall be valid for a period of 180 days or the length of time of the building permit or other construction authorizations, whichever is longer, from the date of issuance. The Building Inspector may extend the period one or more times for up to a maximum of an additional 180 days. The Building Inspector may require additional control measures as a condition of the extension if they are necessary to meet the requirements of these regulations.
(2) 
Letter of credit. As a condition of approval and issuance of the permit for land disturbing construction activities exceeding 20,000 square feet, the Building Inspector shall require the applicant to deposit an irrevocable letter of credit issued by an approved lending institution to guarantee a good faith execution of the approved control plan and any permit conditions. The line of credit will be in the amount of the estimated cost as determined by the Building Inspector to implement the approved control plan and any permit conditions and shall be maintained in such amount until the project is complete with vegetative cover fully established.
(3) 
Permit conditions. All permits shall require the permittee to:
(a) 
Obtain permission in writing from the Building Inspector prior to modifying the control plan or control statement.
(b) 
Install all control measures as identified in the approved control plan or control statement prior to commencing work.
(c) 
Maintain all road drainage systems, stormwater drainage systems, control measures and other facilities identified in the control plan or control statement.
(d) 
Repair any siltation or erosion damage to adjoining surfaces and drainageways resulting from land developing or disturbing activities.
(e) 
Inspect the construction control measures after each rain of 0.5 inch or more and at least once each week and make needed repairs.
(f) 
Allow the Building Inspector to enter the site for the purpose of inspecting compliance with the control plan or control statement or for performing any work necessary to bring the site into compliance with the control plan or control statement.
(4) 
Charge for permits. The following schedule of activities shall require the advance payment of fees for each activity listed in accordance with the schedule of fees approved by resolution by the Village Board and placed permanently on file in the office of the Village Clerk:
(a) 
Erosion control statement fee, see current fee schedule.
(b) 
Erosion control plan fee, see current fee schedule.
(c) 
Actual engineering or other expenses incurred by the Village in connection with the erosion control plan submitted will be billed to the permittee.
(d) 
Additions to existing structures of less than 500 square feet, see current fee schedule.
(e) 
All other construction activity under 20,000 square feet, see current fee schedule.
(f) 
Projects involving land disturbing construction activity of 20,000 square feet or more, see current fee schedule.
The Building Inspector shall inspect construction sites at times appropriate to states of construction. If land disturbing or land development activities are being carried out without a permit, the Building Inspector may enter the land pursuant to the provisions or § 66.0119.
A. 
The Building Inspector may post a stop-work order if:
(1) 
Any land disturbing or land developing activity regulated under this article is being undertaken without a permit.
(2) 
The control plan or control statement is not being implemented.
(3) 
The conditions of the permit are not being met.
B. 
Any permittee violating any provision of this article shall, within 24 hours of notification by the Building Inspector, cease all such unlawful activities and comply with the control plan, control statement or permit conditions or the Building Inspector may revoke such permit. In such case the Village shall enter and remedy the site at the expense of the permittee or bank issuing the letter of credit required by this article.
C. 
In those cases where any person not holding the required permit violates any of the provisions of this article, such person shall, within five days of notification by the Building Inspector, cease all unlawful activities or the Building Inspector may seek a court order requiring compliance with these regulations.
D. 
The Building Inspector or the Board of Appeals may retract the stop-work order or the revocation of permit.
E. 
If the provisions of Subsection B or C above are not complied with within the specified time, the Building Inspector may within 24 hours of such time issue a written notice of intent to the permittee, landowner or land user of the Village's intent to perform work necessary to comply with these regulations. The Building Inspector may go on the land and commence the work after 24 hours from issuing the notice of intent. The costs of the work performed by the Village may be withdrawn from the line of credit. Any costs, plus interest at the rate authorized by the Village Board, incurred by the Village to bring the site into compliance with these regulations yet not covered due to a shortfall in the account used to secure the line of credit will be billed to the permittee or landowner. If a permittee or landowner fails to pay the amount due, the Village Board shall impose a special charge against the property under § 66.0627, Wis. Stats. If the amount is not paid, the special charge will be become a lien against the property under § 66.0627, Wis. Stats.
F. 
Except as otherwise provided, any person found to be in violation of this article shall be subject to those penalties and enforcement remedies provided in Chapter 390, Zoning, of the Code of the Village of Williams Bay, and the standard penalty provision of this Municipal Code.
[Adopted as § 15.09 of the 2011 Code]
The intent of this article is to authorize the Village Engineer to require stormwater management practices which will reduce the amount of sediment, other pollutants, and peak flow of runoff from lands undergoing development. This article shall apply to all land disturbance activities occurring after adoption of this article.
This article is adopted by the Village of Williams Bay under the authority granted by § 61.354, Wis. Stats., to fulfill the objectives of § 281.33, Wis. Stats.
A. 
Findings. The Village of Williams Bay finds that uncontrolled stormwater runoff from land development activity has a significant impact upon Geneva Lake, its watershed and other water resources; and the health, safety, and general welfare of the surrounding communities. Specifically, uncontrolled stormwater runoff can:
(1) 
Diminish the capacity of Geneva Lake and streams within its watershed to support fish, aquatic life, recreational, and water supply uses by increasing loadings of nutrients and other urban pollutants;
(2) 
Degrade physical stream habitat by increasing stream bank erosion, increasing stream bed scour, diminishing groundwater recharge, and diminishing stream base flows;
(3) 
Alter wetland communities by changing wetland hydrology and by increasing pollutant loads;
(4) 
Reduce the quality of groundwater by increasing pollutant loads;
(5) 
Threaten public health, safety, property, and general welfare by overtaxing storm sewers, drainage ways and other minor drainage facilities;
(6) 
Threaten public health, safety, property, and general welfare by increasing major flood peaks and volumes;
(7) 
Undermine floodplain management efforts by increasing the incidence and levels of flooding; and
(8) 
Diminish the public enjoyment of natural resources.
B. 
Purpose. It is the purpose of this article to preserve the natural resources; to protect the quality of the waters; and to protect and promote the health, safety and welfare of the people, to the extent practicable.
This article applies to land developing and land disturbing activities on lands situated within the corporate limits of the Village of Williams Bay.
As used in this article, the following terms shall have the meanings indicated:
AGRICULTURAL LAND USE
Use of land for planting, growing, cultivating and harvesting of crops for human or livestock consumption and pasturing or yarding of livestock.
APPLICANT
The landowner or one of the landowners and/or land user or users of a site subject to this article.
ARTERIAL ROADWAY
Any federal, state, or county trunk highway or any other street or roadway, as determined by the Village Engineer, that provides an important transportation link.
CHANNEL
A natural or artificial watercourse constructed, with a definite bed and banks to confine and conduct the normal flow of water.
CLEAN FILL
Uncontaminated rock, stone, sand, soil, brick, building stone, concrete, reinforced concrete, broken pavement, and unpainted or untreated wood.
CONTROL MEASURE
A practice or combination of practices to control erosion, stormwater and attendant pollution.
DEPARTMENT
The Wisconsin Department of Natural Resources.
DESIGN STORM
A hypothetical discrete rainstorm characterized by specific duration, temporal distribution, rainfall intensity, return frequency and total depth of rainfall.
DETENTION BASIN
A type of stormwater basin which has a direct outlet and serves to reduce water velocities and peak flows by outletting at designed flow rates (to temporarily detain water flows). A detention basin is considered wet if it is greater than three feet deep from the permanent water level to the bottom of the basin.
DISTURBED AREA
A site which, due to land developing or disturbing activities, has or will experience disturbance or destruction of the existing land surface and/or vegetative cover.
EROSION
The detachment and movement of soil, sediment or rock fragments by means of water, ice or gravity.
IMPERVIOUS SURFACE
A surface through which rainfall does not infiltrate. Rooftops, sidewalks, parking lots, and street surfaces are examples of impervious surfaces.
LAND DEVELOPING ACTIVITY
The construction or erection of buildings, roads, parking lots, paved storage areas and other structures.
LAND DISTURBING ACTIVITY
Any man-made construction upon or change of the land surface including removal of vegetative cover, excavating, filling and grading but not including agricultural land uses such as planting, growing, cultivating and harvesting of crops, growing and tending of gardens; harvesting of trees.
LAND USER
Any person operating upon, leasing, or renting land, or having made any other arrangements with the landowner by which the land user engages in uses of land which are sites subject to this article.
LANDOWNER
Any person holding title to or having an interest in a parcel of land which includes a site subject to this article.
OFF-SITE
Located outside the property boundary described in the permit application for land development activity.
PERFORMANCE SECURITY
A performance bond, maintenance bond, surety bond, irrevocable letter of credit, or similar guarantees submitted to the Village of Williams Bay by the permit holder to assure that requirements of this article are carried out in compliance with the stormwater management plan.
PREDEVELOPMENT LAND USE CONDITION
Land which has runoff characteristics equivalent to runoff curve numbers (CNs) of: 30, 58, 71, and 78 for Hydrologic Soil Groups A, B, C, and D, respectively. This term is used for the purpose of matching of pre and post development stormwater peak flows and volumes as required by this article.
RETENTION BASIN
A type of stormwater basin which has no direct outlet and empties by infiltration to the natural soil surface and by evaporation (to retain all water).
RUNOFF
The rainfall, snow melt, or irrigation water flowing over the ground surface.
SEDIMENTATION BASIN
An artificially created holding pond or other catchment for the purpose of capturing and retaining any sedimentation flowing off of sites as a result of land developing or land disturbing activities.
SHEET FLOW RUNOFF
Water, usually storm runoff, flowing in a thin layer of the ground surface; also called "overland flow" (by convention, this distance does not exceed 300 feet).
SITE
That parcel or other division of land set forth in the legal description contained in the application on which the land disturbing or land development activity is proposed to take place.
STORMWATER
Precipitation runoff, snowmelt runoff, surface runoff and drainage.
STORMWATER BASIN
Artificially created holding pond or other catchment for the purposes of retaining or detaining stormwater.
STORMWATER CONTROL PLAN
A plat of survey setting forth a written description of the number, locations, sizes, and other pertinent data as to control measures designed to meet the requirements of this article submitted by the applicant for review and approval by the Village of Williams Bay.
TIME OF CONCENTRATION
The time for surface runoff to travel from the farthest point in a watershed to the outlet point of the watershed. For purposes of calculations used to meet the requirements of this article; the following roughness coefficients shall be used:
Flow Regime
Predevelopment
Post-Development
Overland flow (length 300 feet)
n = 0.35
n 0.25
Shallow concentrated flow (Velocity = k* slope 0.5)*
k 2.5
k 15
Flow in vegetated channels
n = 0.10
n 0.04
NOTES:
*
Velocity in feet/second; Slope in feet/foot.
All control measures required to comply with this article shall meet with the design criteria, standards and specifications for the control measures as set forth in "Natural Resources Conservation Service Standards and Specifications" manual; criteria established by this article, or criteria identified by the Village of Williams Bay.
A. 
All sedimentation basins and other control measures necessary to meet the requirements of this article shall be designed, constructed and maintained by the applicant and his or her successors during the pendency of the period of land disturbance and development of the site in a satisfactory manner so as to ensure adequate performance and to prevent the occurrence of nuisances. All stormwater basins shall remain permanent and be maintained on site to the extent necessary to meet the stormwater standards set forth by this article. Standards for design, construction and maintenance of control measures shall be set forth in the Natural Resources Conservation Service Technical Guide, criteria established by this article, or criteria identified by the Village of Williams Bay.
B. 
The developer shall provide an easement to the Village of Williams Bay for adequate access to structural management measures.
A. 
Applicability.
(1) 
This article applies to the following types of land disturbing or land developing activities for stormwater control purposes:
(a) 
Those involving the implementation of a residential development with a gross aggregate impervious area of 1.5 acres or greater.
(b) 
Those involving the development plan other than residential development with a gross aggregate area of 1.5 acres or more or any nonresidential land development which creates an impervious area of 0.5 acre or more.
(c) 
Those developments which in the opinion of the Village of Williams Bay are likely to result in stormwater runoff which exceeds the safe capacity of the existing drainage facilities or receiving body of water, which cause undue channel erosion, which increases water pollution by scouring or the transportation of particulate matter or which endangers down stream property.
(2) 
This article does not apply to state, federal, or municipal highway, street, or road construction.
B. 
Requirements. The following requirements shall be met on all sites described in Subsection A:
(1) 
Post-development release rates for the two-, ten-, and 100-year twenty-four-hour storm events must be no greater than the predevelopment discharge from the site. Predevelopment site conditions are defined in § 178-16 of this article. The Village of Williams Bay may impose stricter requirements in the case of inadequate downstream conveyance capacity.
(2) 
Determination of peak flow rates and volume of runoff for purposes of meeting the requirements of this article shall be computed by procedures described in Urban Hydrology for Small Watersheds, TR-55 (Technical Release 55) published by the Engineering Division, United States Natural Resource Conservation Service (formerly known as the Soil Conservation Service), United States Department of Agriculture, June 1992. Other calculations methods may be required by the Village of Williams Bay, or may be used by the applicant upon approval by the Village of Williams Bay.
(3) 
Design rainfalls depths to be used in stormwater calculations must be from the point rainfall intensity-duration-frequency relationships for Milwaukee, Wisconsin according to Southeastern Wisconsin Regional Planning Commission report (Community Assistance Planning Report No. 152).
(4) 
All naturally occurring contribution runoff entering the project site must be included in the design of the drainage system. Design must take into consideration any naturally occurring stormwater storage which presently serves to reduce peak predevelopment runoff rates.
(5) 
Contribution runoff entering the project from off site may be excluded from detention calculations if the water is routed around disturbed areas by use of stable watercourse(s).
(6) 
All open channel stormwater conveyance systems shall provide safe conveyance for peak flow from a twenty-five-year frequency, twenty-four-hour rainfall event within the defined channel banks. All storm sewer systems shall provide safe conveyance for peak flow from a ten-year frequency rainfall without surcharging. All culverts for nonarterial roadways shall provide safe conveyance for peak flow from a ten-year frequency rainfall without overtopping.
(7) 
Conveyance for the peak flow runoff from a 100-year twenty-four-hour event shall be provided such that no inundation of, or damage to built structures or arterial roadways shall occur.
(8) 
Where feasible, all permanent storm sewer inlets must be stenciled by the permit holder as part of the water quality strategy for protection of surface waters and drainage to Lake Geneva.
(9) 
Drainage systems may not result in transfer of drainage from one delineated natural drainage area to another if reasonable alternatives exist which would preserve natural drainage patterns. Drainage area delineations must be shown on the stormwater plan.
(10) 
All stormwater basins shall be permanent, aesthetically pleasing, if practical, and safe. Subsurface bottoms of wet basins must provide a safety ledge consistent with required design criteria identified in § 178-18.
(11) 
All calculations must be provided to the Village of Williams Bay to demonstrate that required stormwater criteria have been met. All calculations must be certified by a professional licensed engineer and be certified as complying with the technical standards and construction specifications of the Village of Williams Bay.
(12) 
Stormwater quality practices installed in compliance with this article must remove 80% of the suspended solids. This condition may be met by stormwater practices that are designed to store for a minimum of 24 hours the runoff volume resulting from 1.5 inches of rain over a four-hour period. Other methods that accomplish the 80% removal of suspended solids can be used upon approval by the Village of Williams Bay.
(13) 
Nonpoint source control measures other than wet basins may be applied to a site if:
(a) 
The use of a wet detention basin meeting the criteria of this article is not feasible for the site under review; and
(b) 
The alternative best management practice is approved by the Village of Williams Bay.
(14) 
Wetlands shall not be used for reduction of nonpoint source pollution in runoff water from the site.
(15) 
Stormwater management facilities may also be subject to requirements as specified in State of Wisconsin Administrative Code Chs. NR 116 and NR 320 and Chs. 30 and 88, Wis. Stats.
A. 
No landowner or landowner's agent may commence a land disturbing or developing activity subject to this article without receiving prior approval of a stormwater control plan for the site and receiving a permit from the Village of Williams Bay. The landowner, or landowner's agent controlling or using the site and desiring to undertake a land disturbing or land developing activity subject to this article shall, in the capacity of applicant, submit an application for a permit and stormwater control plan and pay the required application fee to the Village of Williams Bay. By submitting an application, the applicant is authorizing the Village of Williams Bay or designee to enter the site to obtain information required for the review of the control plan.
B. 
Submission of an application by one of several land users or landowners of particular site shall constitute an affirmation by said applicant of authority to act on behalf of the other land users or landowners to so apply and, upon issuance of a permit, to engage in land developing or disturbing activities on the site. The Village of Williams Bay shall be under no obligation to ascertain the legal authority of the applicant to so act.
C. 
Content of a stormwater control plan for land developing and disturbing activities.
(1) 
Existing site conditions. The plan must show existing site conditions on a scale of at least one inch equals 100 feet. Surrounding areas contributing runoff to the site shall be shown on a map of appropriate scale to support the required stormwater runoff calculations. Maps shall depict accurately:
(a) 
Site boundaries and adjacent lands which accurately identify site locations;
(b) 
Lakes, streams, wetlands, channels, ponds, ditches and other watercourses on and immediately adjacent to the site;
(c) 
One-hundred-year floodplains, flood fringes and floodways;
(d) 
Location of the predominant soil types;
(e) 
Vegetative cover;
(f) 
Location and dimensions of stormwater drainage systems and natural drainage patterns on and immediately adjacent to the site;
(g) 
Locations and dimensions of utilities, structures, roads, highways, and paving; and
(h) 
Site topography at a contour interval not to exceed two feet when construction site has more than five acres of drainage or has a 10% slope or greater. Areas with less than five acres or less than 10% slope shall not require any topography map unless the site requires stormwater review according to applicability of this article or a map is specifically requested by the review technician or designee. Both existing and proposed contours must be shown on the same plan to the same scale.
(2) 
Final site conditions. Final site conditions on the same scale as the existing site map showing the site changes.
(3) 
All factors used to calculate peak flows from pre- and post-development conditions and stormwater storage volume requirements. The Stormwater Control Plan must specify the factors for each hydrologic unit analyzed including: percent impervious; curve number; soil hydrologic group; time of concentration factors (slope, length, Manning's "n" for overland, shallow, and concentrated flow); and acres of each land use.
D. 
Review of control plan.
(1) 
Within 45 days of receipt of the application, stormwater control plan, and fee, the Village of Williams Bay or designee shall review the application and control plan to determine if the requirements of this article are met.
(2) 
The Village of Williams Bay or designee may request comments from other departments or agencies. If the requirements of this article are met, the Village of Williams Bay or designee shall approve the plan and inform the applicant of intent to issue a permit. If the conditions are not met, the Village of Williams Bay shall inform the applicant in writing and may either require needed information or disapprove the plan. Within 30 days of receipt of needed information, the Village of Williams Bay or designee shall again determine if the plan meets the requirements of this article. If the plan is disapproved, the Village of Williams Bay shall inform the applicant in writing of the reasons for the disapproval.
E. 
Permits.
(1) 
Duration. Permits shall be valid for a period of 180 days, or the length of the building permit or other construction authorizations, whichever is longer, from the date of issuance. The Plan Commission may extend the period for up to an additional 180 days. The Plan Commission may require additional control measures as a condition of the extension if they are necessary to meet the requirements of this article.
(2) 
Performance security. As a condition of approval and issuance of the permit, the Village of Williams Bay may require the applicant to deposit a letter of credit or cash escrow in the amount of not less than the cost of constructing the stormwater practices. The guarantee shall include all phases of the plan from the clearing and stockpiling operations to final grading and landscaping including a maintenance guarantee for a period of not less than two years from the recording of the document or commencement of construction, whichever occurs first. An agreement will be a part of this guarantee which will give the Village of Williams Bay the authority to use the funds to complete the project if the developer defaults or does not properly implement the approved plan. This agreement shall be received by the Village of Williams Bay prior to issuance of any permits and shall be effective for a sufficient time period to perform the activities required, make the appropriate inspections and approve the final installation. The Village of Williams Bay may extend the agreement beyond its original expiration date if necessary due to unexpected or unforeseen circumstances beyond the control of the developer. A performance bond shall be replaced with a maintenance guarantee for a stated period of time and in an amount equal to a percentage of the cost of the construction of the improvements and a cost overrun of 15%.
(3) 
Permit conditions. All permits shall require the permittee, land user or representative to:
(a) 
Notify the Village of Williams Bay within 72 hours of commencing any land developing or disturbing activity.
(b) 
Notify the Village of Williams Bay of completion of any control measures within 14 days after their installation.
(c) 
Obtain permission in writing from the Village of Williams Bay prior to modifying the control plan.
(d) 
Install all control measures as identified in the approved control plan.
(e) 
Maintain all road drainage systems, stormwater drainage systems, control measures and other facilities identified in the control plan.
(f) 
Allow the Village of Williams Bay or designee to enter the site for the purpose of inspecting compliance with the stormwater control plan or performing any work necessary to bring the site into compliance with the stormwater control plan; and
(g) 
Keep a copy of the stormwater control plan on the site.
The Village of Williams Bay or designee shall inspect stormwater control practices upon completion to insure compliance with this article.
A. 
The Village of Williams Bay may post a stop-work order, or issue a notice of intent to the permittee, landowner or landowner's agent, to perform work necessary to comply with this article. Ten days after posting a stop-work order, the Village of Williams Bay may issue a notice of intent to the permittee or landowner or land user of the Village of Williams Bay's intent to perform work necessary to comply with this article. The Village of Williams Bay or designee may go on the land and commence the work after 24 hours from issuing the notice of intent. The costs of the work performed by the Village of Williams Bay or designee, plus interest at the rate authorized by the Village of Williams Bay shall be billed to the permittee or the landowner. In the event a permittee or landowner fails to pay the amount due, the Village Board shall impose a special charge against the property pursuant to § 66.0627, Wis. Stats.
B. 
If the permittee does not cease the activity or comply with the permit conditions within 10 days, the Village of Williams Bay may revoke the permit.
C. 
If the landowner or landowner's agent where no permit has been issued does not cease the activity within 10 days, the Village of Williams Bay may obtain a cease-and-desist order.
D. 
The Village of Williams Bay may retract the stop-work order or the revocation.
E. 
Any person who continues to conduct land disturbing activities on a project site after being given written notice by the Village of Williams Bay regarding need for permit review and approval prior to conducting land disturbance subject to this article shall be in violation of this article.
F. 
Any person violating any of the provisions of this article shall be subject to a forfeiture in accordance with the Village of Williams Bay for each violation. Each day a violation exists shall constitute a separate offense.
G. 
Compliance with the provisions of this article may also be enforced by injunction.
The recorded plat, certified survey, or land title for lands which shall have stormwater controls must identify the permanent location of all proposed stormwater facilities. Further, the recorded plat, certified survey, or land title, in the absence of any other agreement with the Village of Williams Bay must state that the facilities shall be maintained by the property owner of record to assure its proper function as a nonpoint source control practice. An operation and maintenance plan shall be developed for all detention or retention basins. At a minimum, the plan shall address sediment removal, inlet and outlet maintenance, and keeping embankments clear of woody vegetation. The plan may also need to address weed or algae growth and removal, insect and wildlife control and landscaping practices.
A. 
Board of Appeals. The Board of Appeals as created pursuant to Chapter 390, Zoning, of the Village Code functioning in accord with §§ 62.23(7)(e) and 68.11, Wis. Stats.:
(1) 
Shall hear and decide appeals where it is alleged that there is an error in any order, decision, or determination made by the Plan Commission in administering this article;
(2) 
Upon appeal, may authorize variances from the provisions of this article which are not contrary to the public interest and where owing to special conditions, a literal enforcement of the provisions of this article will result in unnecessary hardship; and
(3) 
Shall use the rules, procedures, duties and powers authorized by statute in hearing and deciding appeals and authorizing variances.
B. 
Who may appeal. Any applicant, permittee, landowner, or land user may appeal any order, decision or determination made by the Plan Commission in administering this article relative to sites in which such person has an interest.
A. 
The fees referred to in other sections of this article shall be established by the Village of Williams Bay in a fee schedule and may from time to time be modified by Village of Williams Bay. The processing fees shall be related to costs involved in processing permit applications, conditional use petitions, appeals to the Zoning Board of Appeals and zoning amendments and changes.
B. 
A double fee shall be charged by the Village of Williams Bay if work is started before a permit is applied for and issued. Such double fee shall not release the applicant from full compliance with this article nor from prosecution for violation of this article.