[Amended 3-16-2004 by Ord. No. 1157; 9-21-2004 by Ord. No. 1168; 11-30-2021 by Ord. No. 1478]
A. 
This article is adopted by the Common Council under the authority granted by § 62.234, Wis. Stats. This article supersedes all provisions of an ordinance previously enacted under § 62.23, Wis. Stats., that relate to stormwater management regulations. Except as otherwise specified in § 62.234, Wis. Stats., § 62.23, Wis. Stats., applies to this article and to any amendments to this article.
B. 
The provisions of this article are deemed not to limit any other lawful regulatory powers of the same governing body.
C. 
The Common Council hereby designates the City Engineer to administer and enforce the provisions of this article.
D. 
The requirements of this article do not preempt more stringent stormwater management requirements that may be imposed by any of the following:
(1) 
Wisconsin Department of Natural Resources administrative rules, permits or approvals, including those authorized under §§ 281.16 and 283.33, Wis. Stats.
(2) 
Targeted nonagricultural performance standards promulgated in rules by the Wisconsin Department of Natural Resources under § NR 151.004, Wis. Adm. Code.
The Common Council acknowledges that uncontrolled, post-construction runoff has a significant impact upon water resources and the health, safety and general welfare of the community and diminishes the public enjoyment and use of natural resources. Specifically, uncontrolled post-construction runoff can:
A. 
Degrade physical stream habitat by increasing stream bank erosion, increasing streambed scour, diminishing groundwater recharge, diminishing stream base flows and increasing stream temperature.
B. 
Diminish the capacity of lakes and streams to support fish, aquatic life, recreational and water supply uses by increasing pollutant loading of sediment, suspended solids, nutrients, heavy metals, bacteria, pathogens and other urban pollutants.
C. 
Alter wetland communities by changing wetland hydrology and by increasing pollutant loads.
D. 
Reduce the quality of groundwater by increasing pollutant loading.
E. 
Threaten public health, safety, property and general welfare by overtaxing storm sewers, drainage ways, and other minor drainage facilities.
A. 
Purpose. The general purpose of this article is to establish long-term, post-construction runoff management requirements that will diminish the threats to public health, safety, welfare and the aquatic environment. Specific purposes are to:
(1) 
Further the maintenance of safe and healthful conditions.
(2) 
Prevent and control the adverse effects of stormwater; prevent and control soil erosion; prevent and control water pollution; protect spawning grounds, fish and aquatic life; control building sites, placement of structures and land uses; preserve ground cover and scenic beauty; and promote sound economic growth.
(3) 
Control exceedance of the safe capacity of existing drainage facilities and receiving water bodies; prevent undue channel erosion; and control increases in the scouring and transportation of particulate matter.
(4) 
Minimize the amount of pollutants discharged from the separate storm sewer to protect the waters of the state.
B. 
Intent. It is the intent of the Common Council that this article regulates post-construction stormwater discharges to waters of the state. This article may be applied on a site-by-site basis. The Common Council recognizes, however, that the preferred method of achieving the stormwater performance standards set forth in this article is through the preparation and implementation of comprehensive, systems-level stormwater management plans that cover hydrologic units, such as watersheds, on a municipal and regional scale. Such plans may prescribe regional stormwater devices, practices or systems, any of which may be designed to treat runoff from more than one site prior to discharge to waters of the state. Where such plans are in conformance with the performance standards developed under § 281.16, Wis. Stats., for regional stormwater management measures and have been approved by the Common Council, it is the intent of this article that the approved stormwater management plan be used to identify post-construction management measures acceptable for the community.
A. 
Applicability.
(1) 
Except as provided under Subsection A(2), this article applies to a post-construction site whereupon one acre or more of land-disturbing construction activity occurs during construction.
(2) 
A site that meets any of the criteria in this subsection is exempt from the requirements of this article:
(a) 
A post-construction site with less than 10% connected imperviousness, based on the area of land disturbance, provided the cumulative area of all impervious surfaces is less than one acre. However, the exemption of this subsection does not include exemption from the protective area standard of this article.
(b) 
Agricultural facilities and practices.
(c) 
Underground utility construction, but not including the construction of any aboveground structures associated with utility construction.
(3) 
Notwithstanding the applicability requirements in Subsection A(1), this article applies to post-construction sites of any size that, as determined by the City Engineer, are likely to result in runoff that exceeds the safe capacity of the existing drainage facilities or receiving body of water, causes undue channel erosion, or increases water pollution by scouring or the transportation of particulate matter.
B. 
Jurisdiction. This article applies to post construction sites within the boundaries and jurisdiction of the City of St. Francis.
C. 
Exclusions. This article is not applicable to activities conducted by a state agency, as defined under § 227.01(1), Wis. Stats.
As used in this article, the following terms shall have the meanings indicated:
ADEQUATE SOD or SELF-SUSTAINING VEGETATIVE COVER
Maintenance of sufficient vegetation types and densities such that the physical integrity of the streambank or lakeshore is preserved. Self-sustaining vegetative cover includes grasses, forbs, sedges and duff layers of fallen leaves and woody debris.
ADMINISTERING AUTHORITY
A governmental employee or a regional planning commission empowered under § 62.234, Wis. Stats., that is designated by the Common Council to administer this article.
AGRICULTURAL FACILITIES AND PRACTICES
Has the meaning given in § 281.16, Wis. Stats.
ATLAS 14
The National Oceanic and Atmospheric Administration (NOAA) Atlas 14 Precipitation-Frequency Atlas of the United States, Volume 8 (Midwestern States), published in 2013.
AVERAGE ANNUAL RAINFALL
A typical calendar year of precipitation as determined by the Wisconsin Department of Natural Resources for users of models such as WinSLAMM, P8 or equivalent methodology. The average annual rainfall is chosen from a Department publication for the location closest to the municipality.
BEST MANAGEMENT PRACTICE or BMP
Structural or nonstructural measures, practices, techniques or devices employed to avoid or minimize sediment or pollutants carried in runoff to waters of the state.
BUSINESS DAY
A day the office of the City Engineer is routinely and customarily open for business.
CEASE-AND-DESIST ORDER
A court-issued order to halt land-disturbing construction activity that is being conducted without the required permit or in violation of the permit issued by the City of St. Francis.
CITY
The City of St. Francis.
CITY ATTORNEY
The City Attorney of St. Francis.
COMBINED SEWER SYSTEM
A system for conveying both sanitary sewage and stormwater runoff.
COMMON COUNCIL
City of St. Francis Common Council.
CONNECTED IMPERVIOUSNESS
An impervious surface that is directly connected to a separate storm sewer or water of the state via an impervious flow path.
DESIGN STORM
A hypothetical discrete rainstorm characterized by a specific duration, temporal distribution, rainfall intensity, return frequency, and total depth of rainfall.
DEVELOPMENT
Residential, commercial, industrial or institutional land uses and associated roads.
DIVISION OF LAND
The creation from one parcel of four or more parcels or building sites of 1 1/2 or less acres each in area where such creation occurs at one time or through the successive partition within a five-year period.
EFFECTIVE INFILTRATION AREA
The area of the infiltration system that is used to infiltrate runoff and does not include the area used for site access, berms or pretreatment.
EROSION
The process by which the land's surface is worn away by the action of wind, water, ice or gravity.
EXCEPTIONAL RESOURCE WATERS
Waters listed in § NR 102.11, Wis. Adm. Code.
EXTRATERRITORIAL
The unincorporated area within three miles of the corporate limits of a first-, second- or third-class city or within 1.5 miles of a fourth-class city or village.
FINAL STABILIZATION
All land-disturbing construction activities at the construction site have been completed and a uniform, perennial, vegetative cover has been established, with a density of at least 70% of the cover, for the unpaved areas and areas not covered by permanent structures, or employment of equivalent permanent stabilization measures.
FINANCIAL GUARANTEE
A performance bond, maintenance bond, surety bond, irrevocable letter of credit, or similar guarantee submitted to the City by the responsible party to assure that requirements of this article are carried out in compliance with the stormwater management plan.
GOVERNING BODY
Common Council.
IMPERVIOUS SURFACE
An area that releases as runoff all or a large portion of the precipitation that falls on it, except for frozen soil. Rooftops, sidewalks, driveways, parking lots and streets are examples of areas that typically are impervious.
INFILL AREA
An undeveloped area of land located within existing development.
INFILTRATION
The entry of precipitation or runoff into or through the soil.
INFILTRATION SYSTEM
A device or practice, such as a basin, trench, rain garden or swale, designed specifically to encourage infiltration, but does not include natural infiltration in pervious surfaces such as lawns, redirecting of rooftop downspouts onto lawns or minimal infiltration from practices, such as swales or roadside channels, designed for conveyance and pollutant removal only.
KARST FEATURE
An area or surficial geologic feature subject to bedrock dissolution so that it is likely to provide a conduit to groundwater and may include caves, enlarged fractures, mine features, exposed bedrock surfaces, sinkholes, springs, seeps or swallets.
LAND-DISTURBING CONSTRUCTION ACTIVITY
Any man-made alteration of the land surface resulting in a change in the topography or existing vegetative or nonvegetative soil cover that may result in runoff and lead to an increase in soil erosion and movement of sediment into waters of the state. "Land-disturbing construction activity" includes clearing and grubbing, demolition, excavating, pit trench dewatering, filling and grading activities.
MAINTENANCE AGREEMENT
A legal document that provides for long-term maintenance of stormwater management practices.
MEP or MAXIMUM EXTENT PRACTICABLE
A level of implementing best management practices in order to achieve a performance standard specified in this article which takes into account the best available technology, cost effectiveness and other competing issues, such as human safety and welfare, endangered and threatened resources, historic properties and geographic features. MEP allows flexibility in the way to meet the performance standards and may vary based on the performance standard and site conditions.
NEW DEVELOPMENT
Development resulting from the conversion of previously undeveloped land or agricultural land uses.
OFF-SITE
Located outside the property boundary described in the permit application.
ON-SITE
Located within the property boundary described in the permit application.
ORDINARY HIGH-WATER MARK
Has the meaning given in § NR 115.03(6), Wis. Adm. Code.
OUTSTANDING RESOURCE WATERS
Waters listed in § NR 102.10, Wis. Adm. Code.
PERCENT FINES
The percentage of a given sample of soil which passes through a No. 200 sieve. [Note to users: Percent fines can be determined using the American Society for Testing and Materials, Volume 04.02, Test Method C117-95, Standard Test Method for Materials Finer than 75 mm (No. 200) Sieve in Material Aggregates by Washing. Copies can be obtained by contacting the American Society for Testing and Materials, 100 Barr Harbor Drive, Conshohocken, PA 19428-2959, or phone 610-832-9585, or on line at http://www.astm.org.]
PERFORMANCE STANDARD
A narrative or measurable number specifying the minimum acceptable outcome for a facility or practice.
PERMIT
A written authorization made by the City to the applicant to conduct land-disturbing construction activity or to discharge post-construction runoff to waters of the state.
PERMIT ADMINISTRATION FEE
A sum of money paid to the administering authority by the permit applicant for the purpose of recouping the expenses incurred by the authority in administering the permit.
PERVIOUS SURFACE
An area that releases as runoff a small portion of the precipitation that falls on it. Lawns, gardens, parks, forests or other similar vegetated areas are examples of surfaces that typically are pervious.
POLLUTANT
Has the meaning given in § 283.01(13), Wis. Stats.
POLLUTION
Has the meaning given in § 281.01(10), Wis. Stats.
POST-CONSTRUCTION SITE
A construction site following the completion of land-disturbing construction activity and final site stabilization.
PREDEVELOPMENT CONDITION
The extent and distribution of land cover types present before the initiation of land-disturbing construction activity, assuming that all land uses prior to development activity are managed in an environmentally sound manner.
PREVENTIVE ACTION LIMIT
Has the meaning given in § NR 140.05(17), Wis. Adm. Code.
REDEVELOPMENT
Areas where development is replacing older development.
RESPONSIBLE PARTY
Any entity holding fee title to the property or other person contracted or obligated by other agreement to implement and maintain post-construction stormwater best management practices.
RUNOFF
Stormwater or precipitation, including rain, snow or ice melt or similar water, that moves on the land surface via sheet or channelized flow.
SEPARATE STORM SEWER
A conveyance or system of conveyances, including roads with drainage systems, streets, catch basins, curbs, gutters, ditches, constructed channels or storm drains, which meets all of the following criteria:
A. 
Is designed or used for collecting water or conveying runoff.
B. 
Is not part of a combined sewer system.
C. 
Is not draining to a stormwater treatment device or system.
D. 
Discharges directly or indirectly to waters of the state. See § 281.01(18), Wis. Stats.
SITE
The entire area included in the legal description of the land on which the land-disturbing construction activity occurred.
STOP-WORK ORDER
An order issued by the City Engineer or designee which requires that all construction activity on the site be stopped.
STORMWATER MANAGEMENT PLAN
Comprehensive plan designed to reduce the discharge of pollutants from stormwater after the site has undergone final stabilization following completion of the construction activity.
STORMWATER MANAGEMENT SYSTEM PLAN
A comprehensive plan designed to reduce the discharge of runoff and pollutants from hydrologic units on a regional or municipal scale.
TECHNICAL STANDARD
A document that specifies design, predicted performance and operation and maintenance specifications for a material, device or method.
TOP OF THE CHANNEL
An edge, or point on the landscape, landward from the ordinary high-water mark of a surface water of the state where the slope of the land begins to be less than 12% continually for at least 50 feet. If the slope of the land is 12% or less continually for the initial 50 feet landward from the ordinary high-water mark, the top of the channel is the ordinary high-water mark.
TR-55
The United States Department of Agriculture, Natural Resources Conservation Service (previously Soil Conservation Service), Urban Hydrology for Small Watersheds, Second Edition, Technical Release 55, June 1986.
TYPE II DISTRIBUTION
A rainfall-type curve as established in the United States Department of Agriculture, Soil Conservation Service, Technical Paper 149, published 1973. The Type II curve is applicable to all of Wisconsin and represents the most intense storm pattern.
WATERS OF THE STATE
Has the meaning given in § 281.01(18), Wis. Stats.
Maximum extent practicable applies when a person who is subject to a performance standard of this article demonstrates to the administering authority's satisfaction that a performance standard is not achievable and that a lower level of performance is appropriate. In making the assertion that a performance standard is not achievable and that a level of performance different from the performance standard is the maximum extent practicable, the responsible party shall take into account the best available technology, cost effectiveness, geographic features, and other competing interests such as protection of public safety and welfare, protection of endangered and threatened resources, and preservation of historic properties.
The following methods shall be used in designing the water quality, peak discharge and infiltration components of stormwater practices needed to meet the water quality standards of this article:
A. 
Consistent with the technical standards identified, developed or disseminated by the Wisconsin Department of Natural Resources under Subchapter V of Chapter NR 151, Wis. Adm. Code.
B. 
Where technical standards have not been identified or developed by the Wisconsin Department of Natural Resources, other technical standards may be used provided that the methods have been approved by the City Engineer.
A. 
Responsible party. The responsible party shall comply with this section.
B. 
Stormwater management plan. A written stormwater management plan in accordance with § 393-9 shall be developed and implemented for each post-construction site.
C. 
Maintenance of effort. For redevelopment sites where the redevelopment will be replacing older development that was subject to post-construction performance standards of Ch. NR 151, Wis. Adm. Code in effect on or after October 1, 2004, the responsible party shall meet the total suspended solids reduction, peak flow control, infiltration, and protective areas standards applicable to the older development or meet the redevelopment standards of this article, whichever is more stringent.
D. 
Requirements. The stormwater management plan required under Subsection B shall include the following:
(1) 
Total suspended solids. BMPs shall be designed, installed and maintained to control total suspended solids carried in runoff from the post-construction site as follows:
(a) 
BMPs shall be designed in accordance with Table 1 or to the maximum extent practicable as provided in Subsection D(1)(b). The design shall be based on an average annual rainfall, as compared to no runoff management controls.
Table 1
TSS Reduction Standards
Development Type
TSS Reduction
New development
80%
Infill development
80%
Redevelopment
40% of load from parking areas and roads
(b) 
Maximum extent practicable. If the design cannot meet a total suspended solids reduction performance standard of Table 1, the stormwater management plan shall include a written, site-specific explanation of why the total suspended solids reduction performance standard cannot be met and why the total suspended solids load will be reduced only to the maximum extent practicable.
(c) 
Off-site drainage. When designing BMPs, runoff draining to the BMP from off-site shall be taken into account in determining the treatment efficiency of the practice. Any impact on the efficiency shall be compensated for by increasing the size of the BMP accordingly.
(2) 
Peak discharge.
(a) 
By design, BMPs shall be employed to maintain or reduce the one-year, twenty-four-hour, and the two-year, twenty-four-hour post-construction peak runoff discharge rates to the one-year, twenty-four-hour; and the two-year, twenty-four-hour predevelopment peak runoff discharge rates respectively, or to the maximum extent practicable. The runoff curve numbers in Table 2 shall be used to represent the actual predevelopment conditions. Peak discharges shall be calculated using TR-55 runoff curve number methodology, Atlas 14 precipitation depths, and the appropriate NRCS Wisconsin MSE3 or MSE4 precipitation distribution. On a case-by-case basis, the City Engineer may allow the use of TP-40 precipitation depths and the Type II distribution.
Table 2
Maximum Predevelopment Runoff Curve Numbers
Runoff Curve
Hydrologic Soil Group
A
B
C
E
Woodland
30
55
70
77
Grassland
39
61
71
78
Cropland
55
69
78
83
(b) 
This subsection of this article does not apply to any of the following:
[1] 
A post-construction site where the discharge is directly into a lake over 5,000 acres or a stream or river segment draining more than 500 square miles.
[2] 
Except as provided in § 393-7C, a redevelopment post-construction site.
[3] 
An infill development area less than five acres.
(3) 
Infiltration.
(a) 
Best management practices. BMPs shall be designed, installed, and maintained to infiltrate runoff in accordance with the following or to the maximum extent practicable:
[1] 
Low imperviousness. For development up to 40% connected, imperviousness, such as parks, cemeteries, and low-density residential development, infiltrate sufficient runoff volume so that the post-development infiltration volume shall be at least 90% of the predevelopment infiltration volume, based on an average annual rainfall. However, when designing appropriate infiltration systems to meet this requirement, no more than 1% of the post-construction site is required as an effective infiltration area.
[2] 
Moderate imperviousness. For development with more than 40% and up to 80% connected imperviousness, such as medium- and high-density residential, multifamily development, industrial and institutional development, and office parks, infiltrate sufficient runoff volume so that the post-development infiltration volume shall be at least 75% of the predevelopment infiltration volume, based on an average annual rainfall. However, when designing appropriate infiltration systems to meet this requirement, no more than 2% of the post-construction site is required as an effective infiltration area.
[3] 
High imperviousness. For development with more than 80% connected imperviousness, such as commercial strip malls, shopping centers, and commercial downtowns, infiltrate sufficient runoff volume so that the post-development infiltration volume shall be at least 60% of the predevelopment infiltration volume, based on an average annual rainfall. However, when designing appropriate infiltration systems to meet this requirement, no more than 2% of the post-construction site is required as an effective infiltration area.
(b) 
Predevelopment. The predevelopment condition shall be the same as specified in Table 2 of the peak discharge section of this article.
(c) 
Source areas.
[1] 
Prohibitions. Runoff from the following areas may not be infiltrated and may not qualify as contributing to meeting the requirements of this section unless demonstrated to meet the conditions identified in § 393-7D(3)(f):
[a] 
Areas associated with a Tier 1 industrial facility identified in § NR 216.21(2)(a), Wis. Adm. Code, including storage, loading and parking. Rooftops maybe infiltrated with the concurrence of the regulatory authority.
[b] 
Storage and loading areas of a Tier 2 industrial facility identified in § NR 216.21(2)(b), Wis. Adm. Code.
[c] 
Fueling and vehicle maintenance areas. Runoff from rooftops of fueling and vehicle maintenance areas may be infiltrated with the concurrence of the regulatory authority.
[2] 
Exemptions. Runoff from the following areas may be credited toward meeting the requirement when infiltrated, but the decision to infiltrate runoff from these source areas is optional:
[a] 
Parking areas and access roads less than 5,000 square feet for commercial development.
[b] 
Parking areas and access roads less than 5,000 square feet for industrial development not subject to the prohibitions under Subsection D(3)(c)[2][a].
[c] 
Except as provided under § 393-7C, redevelopment post-construction sites.
[d] 
Infill development areas less than five acres.
[e] 
Roads on commercial, industrial and institutional land uses, and arterial residential roads.
(d) 
Location of practices.
[1] 
Prohibitions. Infiltration practices may not be located in the following areas:
[a] 
Areas within 1,000 feet up-gradient or within 100 feet downgradient of direct conduits to groundwater.
[b] 
Areas within 400 feet of a community water system well as specified in § NR 811.16(4), Wis. Adm. Code, or within the separation distances listed in § NR 812.08, Wis. Adm. Code, for any private well or noncommunity well for runoff infiltrated from commercial, including multifamily residential, industrial and institutional land uses or regional devices for one- and two-family residential development.
[c] 
Areas where contaminants of concern, as defined in § NR 720.03(2), Wis. Adm. Code, are present in the soil through which infiltration will occur.
[2] 
Separation distances.
[a] 
Infiltration practices shall be located so that the characteristics of the soil and the separation distance between the bottom of the infiltration system and the elevation of seasonal high groundwater or the top of bedrock are in accordance with Table 3:
Table 3
Separation Distances and Soil Characteristics
Source Area
Separation Distance
(feet)
Soil Characteristics
Industrial, commercial, institutional parking lots and roads
5 or more
Filtering layer
Residential arterial roads
5 or more
Filtering layer
Roofs draining to subsurface infiltration practices
1 or more
Native or engineered soil with particles finer than coarse sand
Roofs draining to surface infiltration practices
Not applicable
Not applicable
All other impervious source areas
3 or more
Filtering layer
[b] 
Notwithstanding Subsection D(3)(d)[1][b], applicable requirements for injection wells classified under Ch. NR 815 Wis. Adm. Code, shall be followed.
[3] 
Infiltration rate exemptions. Infiltration practices located in the following areas may be credited toward meeting the requirements under the following conditions, but the decision to infiltrate under these conditions is optional:
[a] 
Where the infiltration rate of the soil measured at the proposed bottom of the infiltration system is less than 0.6 inch per hour using a scientifically credible field test method.
[b] 
Where the least permeable soil horizon to five feet below the proposed bottom of the infiltration system using the U.S. Department of Agriculture method of soils analysis is one of the following: sandy clay loam, clay loam, silty clay loam, sandy clay, silty clay, or clay.
(e) 
Alternate use. Where alternate uses of runoff are employed, such as for toilet flushing, laundry, or irrigation or storage on green roofs where an equivalent portion of the runoff is captured permanently by rooftop vegetation, such alternate use shall be given equal credit toward the infiltration volume required by this section.
(f) 
Groundwater standards.
[1] 
Infiltration systems designed in accordance with this section shall, to the extent technically and economically feasible, minimize the level of pollutants infiltrating to groundwater and shall maintain compliance with the preventive action limit at a point of standards application in accordance with Ch. NR 140, Wis. Adm. Code. However, if site specific information indicates that compliance with a preventive action limit is not achievable, the infiltration BMP may not be installed or shall be modified to prevent infiltration to the maximum extent practicable.
[2] 
Notwithstanding Subsection D(3)(f)[1], the discharge from BMPs shall remain below the enforcement standard at the point of standards application.
(g) 
Pretreatment. Before infiltrating runoff, pretreatment shall be required for parking lot runoff and for runoff from new road construction in commercial, industrial and institutional areas that will enter an infiltration system. The pretreatment shall be designed to protect the infiltration system from clogging prior to scheduled maintenance and to protect groundwater quality in accordance with Subsection D(3)(f). Pretreatment options may include, but are not limited to, oil and grease separation, sedimentation, biofiltration, filtration, swales or filter strips.
(h) 
Maximum extent practicable. Where the conditions of Subsections C and D limit or restrict the use of infiltration practices, the performance standard of § 393-7D(3) shall be met to the maximum extent practicable.
(4) 
Protective areas.
(a) 
Definition. In this section, "protective area" means an area of land that commences at the top of the channel of lakes, streams and rivers, or at the delineated boundary of wetlands, and that is the greatest of the following widths, as measured horizontally from the top of the channel or delineated wetland boundary to the closest impervious surface. However, in this section, "protective area" does not include any area of land adjacent to any stream enclosed within a pipe or culvert, so that runoff cannot enter the enclosure at this location.
[1] 
For outstanding resource waters and exceptional resource waters: 75 feet.
[2] 
For perennial and intermittent streams identified on a U.S. Geological Survey 7.5-minute series topographic map, or a county soil survey map, whichever is more current: 50 feet.
[3] 
For lakes: 50 feet.
[4] 
For wetlands not subject to Subsection D(4)(a)[5] or [6]: 50 feet.
[5] 
For highly susceptible wetlands: 75 feet. Highly susceptible wetlands include the following types: calcareous fens, sedge meadows, open and coniferous bogs, low prairies, coniferous swamps, lowland hardwood swamps, and ephemeral ponds.
[6] 
For less susceptible wetlands: 10% of the average wetland width, but no less than 10 feet nor more than 30 feet. Less susceptible wetlands include: degraded wetland dominated by invasive species such as reed canary grass; cultivated hydric soils; and any gravel pits, or dredged material or fill material disposal sites that take on the attributes of a wetland.
[7] 
In Subsection D(4)(a)[4] to [6], determinations of the extent of the protective area adjacent to wetlands shall be made on the basis of the sensitivity and runoff susceptibility of the wetland in accordance with the standards and criteria in § NR 103.03, Wis. Adm. Code.
[8] 
Wetland boundary delineation shall be made in accordance with § NR 103.08(1m), Wis. Adm. Code. This subsection does not apply to wetlands that have been completely filled in compliance with all applicable state and federal regulations. The protective area for wetlands that have been partially filled in compliance with all applicable state and federal regulations shall be measured from the wetland boundary delineation after a fill has been placed. Where there is a legally authorized wetland fill, the protective area standard need not be met in that location.
[9] 
For concentrated flow channels with drainage areas greater than 130 acres, 10 feet.
[10] 
Notwithstanding Subsection D(4)(a)[1] to [9], the greatest protective area width shall apply where rivers, streams, lakes and wetlands are contiguous.
(b) 
Applicability. This section applies to post-construction sites located within a protective area, except those areas exempted pursuant to Subsection D(4)(d).
(c) 
Requirements. The following requirements shall be met:
[1] 
Impervious surfaces shall be kept out of the protective area entirely or to the maximum extent practicable. If there is no practical alternative to locating an impervious surface in the protective area, the stormwater management plan shall contain a written, site-specific explanation.
[2] 
Where land-disturbing construction activity occurs within a protective area, adequate sod or self-sustaining vegetative cover of 70% or greater shall be established and maintained where no impervious surface is present. The adequate sod or self-sustaining vegetative cover shall be sufficient to provide for bank stability, maintenance of fish habitat, and filtering of pollutants from upslope overland flow areas under sheet flow conditions. Nonvegetative materials, such as rock riprap, may be employed on the bank as necessary to prevent erosion such as on steep slopes or where high velocity flows occur.
[3] 
BMPs such as filter strips, swales, or wet detention ponds, that are designed to control pollutants from non-point sources, may be located in the protective area.
(d) 
Exemptions. This section does not apply to any of the following:
[1] 
Except as provided under § 393-7C, redevelopment post-construction sites.
[2] 
Infill development areas less than five acres.
[3] 
Structures that cross or access surface water such as boat landings, bridges, and culverts.
[4] 
Structures constructed in accordance with § 59.692(1v), Wis. Stats.
[5] 
Areas of post-construction sites from which the runoff does not enter the surface water, including wetlands, without first being treated by a BMP to meet the local ordinance requirements for total suspended solids and peak flow reduction, except to the extent that vegetative ground cover is necessary to maintain bank stability.
(5) 
Fueling and maintenance areas. Fueling and vehicle maintenance areas shall have BMPs designed, installed, and maintained to reduce petroleum within runoff, so that the runoff that enters waters of the state contains no visible petroleum sheen, or to the maximum extent practicable.
(6) 
Swale treatment for transportation facilities.
(a) 
Requirement. Except as provided in Subsection D(6)(b), transportation facilities that use swales for runoff conveyance and pollutant removal are exempt from the requirements of local ordinance requirements for peak flow control, total suspended solids control, and infiltration, if the swales are designed to do all of the following or to the maximum extent practicable:
[1] 
Swales shall be vegetated. However, where appropriate, nonvegetative measures may be employed to prevent erosion or provide for runoff treatment, such as rock riprap stabilization or check dams.
[2] 
Swales shall comply with Sections V.F. (Velocity and Depth) and V.G. (Sale Geometry Criteria) with a swale treatment length as long as that specified in Section V.C. (Pre-Treatment) of the Wisconsin Department of Natural Resources Technical Standard 1005 "Vegetated Infiltration Swales," dated May 2007, or a superseding document. Transportation facility swale treatment does not have to comply with other sections of Technical Standard 1005.
(b) 
Other requirements.
[1] 
Notwithstanding Subsection D(6)(a), the City Engineer may, consistent with water quality standards, require that other requirements, in addition to swale treatment, be met on a transportation facility with an average daily traffic rate greater than 2,500 and where the initial surface water of the state that the runoff directly enters is one of the following:
[a] 
An outstanding resource water.
[b] 
An exceptional resource water.
[c] 
Waters listed in Section 303(d) of the Federal Clean Water Act that are identified as impaired in whole or in part, due to non-point source impacts.
[d] 
Water where targeted performance standards are developed pursuant to § NR 151.004, Wis. Adm. Code.
[2] 
The transportation facility authority shall contact the City to determine if additional BMPs beyond a water quality swale are needed under this subsection.
E. 
General considerations for stormwater management measures. The following considerations shall be observed in on-site and off-site runoff management:
(1) 
Natural topography and land cover features, such as natural swales, natural depressions, native soil infiltrating capacity, and natural groundwater recharge areas shall be preserved and used, to the extent possible, to meet the requirements of this section.
(2) 
Emergency overland flow for all stormwater facilities shall be provided to prevent exceeding the safe capacity of downstream drainage facilities and prevent endangerment of downstream property or public safety.
F. 
BMP location.
(1) 
To comply with the performance standards required under § 393-7 of this article, BMPs may be located on-site or off-site as part of a regional stormwater device, practice or system, but shall be installed in accordance with § NR 151.003, Wis. Adm. Code.
(2) 
The City Engineer may approve off-site management measures provided that all of the following conditions are met:
(a) 
The City Engineer determines that the post-construction runoff is covered by a stormwater management system plan that is approved by the City of St. Francis and that contains management requirements consistent with the purpose and intent of this article.
(b) 
The off-site facility meets all of the following conditions:
[1] 
The facility is in place.
[2] 
The facility is designed and adequately sized to provide a level of stormwater control equal to or greater than that which would be afforded by on-site practices meeting the performance standards of this article.
[3] 
The facility has a legally obligated entity responsible for its long-term operation and maintenance.
(3) 
Where a regional treatment option exists such that the City Engineer exempts the applicant from all or part of the minimum on-site stormwater management requirements, the applicant shall be required to pay a fee in an amount determined in negotiation with the City Engineer. In determining the fee for post-construction runoff, the City Engineer shall consider an equitable distribution of the cost for land, engineering design, construction, and maintenance of the regional treatment option.
G. 
Additional requirements. The City Engineer may establish stormwater management requirements more stringent than those set forth in this article if the City Engineer determines that the requirements are needed to control stormwater quantity or control flooding, comply with federally approved total maximum daily load requirements, or control pollutants associated with existing development or redevelopment.
A. 
Permit required. No responsible party may undertake a land-disturbing construction activity without receiving a post-construction runoff permit from the City Engineer prior to commencing the proposed activity.
B. 
Permit application and fees. Unless specifically excluded by this article, any responsible party desiring a permit shall submit to the City Engineer a permit application made on a form provided by the City for that purpose.
(1) 
Unless otherwise excepted by this article, a permit application must be accompanied by a stormwater management plan, a maintenance agreement and a nonrefundable permit administration fee.
(2) 
The stormwater management plan shall be prepared to meet the requirements of § 393-7 and § 393-9, the maintenance agreement shall be prepared to meet the requirements of § 393-10, the financial guarantee shall meet the requirements of § 393-11, and fees shall be those established by the Common Council as set forth in § 393-12.
C. 
Permit application review and approval. The City Engineer shall review any permit application that is submitted with a stormwater management plan, maintenance agreement, and the required fee. The following approval procedure shall be used:
(1) 
Within 20 business days of the receipt of a complete permit application, including all items as required by Subsection B, shall inform the applicant whether the application, stormwater management plan and maintenance agreement are approved or disapproved based on the requirements of this article.
(2) 
If the stormwater permit application, stormwater management plan and maintenance agreement are approved, or if an agreed upon payment of fees in lieu of stormwater management practices is made, the City Engineer shall issue the permit.
(3) 
If the stormwater permit application, stormwater management plan or maintenance agreement is disapproved, the City Engineer shall detail, in writing, the reasons for disapproval.
(4) 
The City Engineer may request additional information from the applicant. If additional information is submitted, the City Engineer shall have 20 business days from the date the additional information is received to inform the applicant that the stormwater management plan and maintenance agreement are either approved or disapproved.
(5) 
Failure by the City Engineer to inform the permit applicant of a decision within 20 business days of a required submittal shall be deemed to mean approval of the submittal, and the applicant may proceed as if a permit had been issued.
D. 
Permit requirements. All permits issued under this article shall be subject to the following conditions, and holders of permits issued under this article shall be deemed to have accepted these conditions. The City Engineer may suspend or revoke a permit for violation of a permit condition, following written notification of the responsible party. An action by the City Engineer to suspend or revoke this permit may be appealed in accordance with § 393-14.1.
(1) 
Compliance with this permit does not relieve the responsible party of the responsibility to comply with other applicable federal, state, and local laws and regulations.
(2) 
The responsible party shall design and install all structural and nonstructural stormwater management measures in accordance with the approved stormwater management plan and this permit.
(3) 
The responsible party shall notify the City Engineer, in writing, at least three business days before commencing any construction work in conjunction with the stormwater management plan and, in writing, within five business days upon completion of the stormwater management practices. If required as a special condition under Subsection E, the responsible party shall make additional notification according to a schedule set forth by the City Engineer so that practice installations can be inspected during construction.
(4) 
Practice installations required as part of this article shall be certified as-built or record drawings by a licensed professional engineer. Completed stormwater management practices must pass a final inspection by the City Engineer or his or her designee to determine if they are in accordance with the approved stormwater management plan and this article. The City Engineer or his or her designee shall notify the responsible party, in writing, of any changes required in such practices to bring them into compliance with the conditions of this permit.
(5) 
The responsible party shall notify the City Engineer of any significant modifications it intends to make to an approved stormwater management plan. The City Engineer may require that the proposed modifications be submitted to it for approval prior to incorporation into the stormwater management plan and execution by the responsible party.
(6) 
The responsible party shall maintain all stormwater management practices in accordance with the stormwater management plan until the practices either become the responsibility of the City of St. Francis or are transferred to subsequent private owners as specified in the approved maintenance agreement.
(7) 
The responsible party authorizes the City Engineer to perform any work or operations necessary to bring stormwater management measures into conformance with the approved stormwater management plan and consents to a special assessment or charge against the property as authorized under Subchapter VII of Ch. 66, Wis. Stats., or to charging such costs against the financial guarantee posted under § 393-11.
(8) 
If so directed by the City Engineer, the responsible party shall repair at the responsible party's own expense all damage to adjoining municipal facilities and drainage ways caused by runoff, where such damage is caused by activities that are not in compliance with the approved stormwater management plan.
(9) 
The responsible party shall permit property access to the City Engineer or his or her designee for the purpose of inspecting the property for compliance with the approved stormwater management plan and this permit.
(10) 
Where site development or redevelopment involves changes in direction, increases in peak rate and/or total volume of runoff from a site, the City Engineer may require the responsible party to make appropriate legal arrangements with affected property owners concerning the prevention of endangerment to property or public safety.
(11) 
The responsible party is subject to the enforcement actions and penalties detailed in § 393-13 if the responsible party fails to comply with the terms of this permit.
E. 
Permit conditions. Permits issued under this subsection may include conditions established by the City Engineer in addition to the requirements needed to meet the performance standards in § 393-7 or a financial guarantee as provided for in § 393-11.
F. 
Permit duration. Permits issued under this section shall be valid from the date of issuance through the date the City Engineer notifies the responsible party that all stormwater management practices have passed the final inspection required under Subsection D(4).
A. 
Stormwater management plan requirements. The stormwater management plan required under § 393-7B shall contain at a minimum the following information:
(1) 
Name, address, and telephone number for the following or their designees: landowner; developer; project engineer for practice design and certification; person(s) responsible for installation of stormwater management practices; and person(s) responsible for maintenance of stormwater management practices prior to the transfer, if any, of maintenance responsibility to another party.
(2) 
A proper legal description of the property proposed to be developed, referenced to the U.S. Public Land Survey system or to block and lot numbers within a recorded land subdivision plat.
(3) 
Predevelopment site conditions, including:
(a) 
One or more site maps at a scale of not less than one inch equals 10 feet. The site maps shall show the following: site location and legal property description; predominant soil types and hydrologic soil groups; existing cover type and condition; topographic contours of the site at a scale not to exceed 500 feet; topography and drainage network, including enough of the contiguous properties to show runoff patterns onto, through, and from the site; watercourses that may affect or be affected by runoff from the site; flow path and direction for all stormwater conveyance sections; watershed boundaries used in hydrology determinations to show compliance with performance standards; lakes, streams, wetlands, channels, ditches, and other watercourses on and immediately adjacent to the site; limits of the 100-year floodplain; location of well and wellhead protection areas covering the project area and delineated pursuant to § NR 811.16, Wis. Adm. Code.
(b) 
Hydrology and pollutant loading computations as needed to show compliance with performance standards. All major assumptions used in developing input parameters shall be clearly stated. The geographic areas used in making the calculations shall be clearly cross-referenced to the required map(s).
(4) 
Post-development site conditions, including:
(a) 
Explanation of the provisions to preserve and use natural topography and land cover features to minimize changes in peak flow runoff rates and volumes to surface waters and wetlands.
(b) 
Explanation of any restrictions on stormwater management measures in the development area imposed by wellhead protection plans and ordinances.
(c) 
One or more site maps at a scale of not less than one inch equals 10 feet showing the following: post construction pervious areas, including vegetative cover type and condition; impervious surfaces, including all buildings, structures, and pavement; post-construction topographic contours of the site at a scale not to exceed 500 feet; post-construction drainage network, including enough of the contiguous properties to show runoff patterns onto, through, and from the site; locations and dimensions of drainage easements; locations of maintenance easements specified in the maintenance agreement; flow path and direction for all stormwater conveyance sections; location and type of all stormwater management conveyance and treatment practices, including the on-site and off-site tributary drainage area; location and type of conveyance system that will carry runoff from the drainage and treatment practices to the nearest adequate outlet such as a curbed street, storm drain, or natural drainage way; watershed boundaries used in hydrology and pollutant loading calculations and any changes to lakes, streams, wetlands, channels, ditches, and other watercourses on and immediately adjacent to the site.
(d) 
Hydrology and pollutant loading computations as needed to show compliance with performance standards. The computations shall be made for each discharge point in the development, and the geographic areas used in making the calculations shall be clearly cross-referenced to the required map(s).
(e) 
Results of investigations of soils and groundwater required for the placement and design of stormwater management measures. Detailed drawings including cross sections and profiles of all permanent stormwater conveyance and treatment practices.
(5) 
A description and installation schedule for the stormwater management practices needed to meet the performance standards in § 393-7.
(6) 
A maintenance plan developed for the life of each stormwater management practice, including the required maintenance activities and maintenance activity schedule.
(7) 
Cost estimates for the construction, operation, and maintenance of each stormwater management practice.
(8) 
Other information requested, in writing, by the City Engineer to determine compliance of the proposed stormwater management measures with the provisions of this article.
(9) 
All site investigations, plans, designs, computations, and drawings shall be certified by a licensed professional engineer to be prepared in accordance with accepted engineering practice and requirements of this article.
B. 
Alternate requirements. The City Engineer may prescribe alternative submittal requirements for applicants seeking an exemption to on-site stormwater management performance standards under § 393-7E.
A. 
Maintenance agreement required. The maintenance agreement required under § 393-8B for stormwater management practices and shall be an agreement between the City and the responsible party to provide for maintenance of stormwater practices beyond the duration period of this permit. The maintenance agreement shall be filed with the County Register of Deeds as a property deed restriction so that it is binding upon all subsequent owners of the land served by the stormwater management practices.
B. 
Agreement provisions. The maintenance agreement shall contain the following information and provisions and be consistent with the maintenance plan required by § 393-9A(7):
(1) 
Identification of the stormwater facilities and designation of the drainage area served by the facilities.
(2) 
A schedule for regular maintenance of each aspect of the stormwater management plan required under § 393-8B.
(3) 
Identification of the responsible party(s), organization or city, county, town or village responsible for long-term maintenance of the stormwater management practices identified in the stormwater management plan required under § 393-8B.
(4) 
Requirement that the responsible party(s), organization, or city, county, town or village shall maintain stormwater management practices in accordance with the schedule included in Subsection B(2).
(5) 
Authorization for the City Engineer to access the property to conduct inspections of stormwater management practices as necessary to ascertain that the practices are being maintained and operated in accordance with the agreement.
(6) 
A requirement on the City Engineer to maintain public records of the results of the site inspections, to inform the responsible party responsible for maintenance of the inspection results, and to specifically indicate any corrective actions required to bring the stormwater management practice into proper working condition.
(7) 
Agreement that the party designated under Subsection B(3) as responsible for long-term maintenance of the stormwater management practices shall be notified by the City Engineer of maintenance problems which require correction. The specified corrective actions shall be undertaken within a reasonable time frame as set by the City Engineer.
(8) 
Authorization of the City Engineer to perform the corrective actions identified in the inspection report if the responsible party designated under Subsection B(3) does not make the required corrections in the specified time period. The City Clerk/Treasurer shall enter the amount due on the tax rolls and collect the money as a special charge against the property pursuant to Subchapter VII of Ch. 66, Wis. Stats.
A. 
Establishment of the guarantee. The Common Council requires the submittal of a financial guarantee, the form and type of which shall be acceptable to the Common Council. The financial guarantee shall be in an amount determined by the City Engineer to be the estimated cost of construction and the estimated cost of maintenance of the stormwater management practices during the period which the designated party in the maintenance agreement has maintenance responsibility. The financial guarantee shall give the Common Council the authorization to use the funds to complete the stormwater management practices if the responsible party defaults or does not properly implement the approved stormwater management plan, upon written notice to the responsible party by the City Engineer that the requirements of this article have not been met.
B. 
Conditions for release. Conditions for the release of the financial guarantee are as follows:
(1) 
The Common Council shall release the portion of the financial guarantee established under this section, less any costs incurred by the City to complete installation of practices, upon submission of as-built plans or record drawings by a licensed professional engineer. The Common Council may make provisions for a partial pro rata release of the financial guarantee based on the completion of various development stages.
(2) 
The Common Council shall release the portion of the financial guarantee established under this section to assure maintenance of stormwater practices, less any costs incurred by the City, at such time that the responsibility for practice maintenance is passed on to another entity via an approved maintenance agreement.
The fees referred to in other sections of this article shall be established by the Common Council and may, from time to time, be modified by resolution. A schedule of the fees established by the Common Council shall be available for review in the City Clerk/Treasurer's office.
A. 
Definitions. For the purposes of this article, the following terms shall be defined as follows:
ILLICIT CONNECTION
Any drain or conveyance, whether on the surface or subsurface, which allows an illegal discharge to enter the storm drain system, including, but not limited to, any conveyances that allow any nonstormwater discharge, including sewage, process wastewater, and wash water to enter the storm drain system and any connection(s) to the storm drain system from indoor drain(s) and sink(s), regardless of whether said drain or connection had been allowed, permitted, or approved by a government agency, prior to the adoption of this article.
ILLICIT DISCHARGE
Any direct or indirect nonstormwater discharge to the City of St. Francis municipal separate storm sewer system (MS4) except as exempted in § 393-13B(2).
MUNICIPAL SEPARATE STORM SEWER SYSTEM (MS4)
Publicly owned facilities by which stormwater is collected and/or conveyed, including, but not limited to, any road(s) with drainage systems, municipal streets, gutters, curbs, inlets, piped storm drains, pumping facilities, retention and detention basins, natural and human-made or altered drainage channels, reservoirs, and other drainage structures.
PERSON
Any individual, association, organization, partnership, firm, corporation, or other entity recognized by law and acting as either the owner or as the owner's agent.
B. 
Illicit discharge prohibitions.
(1) 
No person shall discharge, or cause to be discharged, into the City's MS4 any materials, including, but not limited to, pollutants or waters (other than stormwater) containing any pollutants that cause or contribute to a violation of applicable water quality standards.
(2) 
Exemptions. The commencement, conduct, or continuance of any discharge to the storm drain system is prohibited except as described as follows:
(a) 
The following discharges are exempt from discharge prohibitions established by this article: water-line flushing or other potable water sources, landscape irrigation or lawn watering; diverted stream flows, rising groundwater, groundwater infiltration to storm drains, uncontaminated pumped groundwater, foundation or footing drains (not including active groundwater dewatering systems), crawl-space pumps, air-conditioning condensation, springs, noncommercial washing of vehicles, natural riparian habitat or wetland flows, swimming pools (if dechlorinated typically less than one PPM chlorine), fire-fighting activities and any other water source not containing pollutants.
(b) 
Discharge(s) specified, in writing, by the City Engineer as being necessary to protect public health and safety.
(c) 
Dye testing is an allowable discharge but requires a verbal notification to the City Engineer prior to the time of the test.
(d) 
The prohibition shall not apply to any nonstormwater discharge permitted under a WPDES permit, waiver or waste discharge order issued to the discharger and administered under the authority of the Wisconsin Department of Natural Resources, provided that the discharger is in full compliance with all requirements of the permit, waiver or order and other applicable laws and regulations, and; further, provided, that written approval has been granted for any discharge to the storm drain system.
C. 
Illicit connections prohibited. The construction, use, maintenance, or continued existence of illicit connections to the City's MS4 is prohibited. This prohibition expressly includes, without limitation, illicit connections made prior to the adoption of this article regardless of whether the connection(s) was permissible under law or practice applicable or prevailing at the time of connection.
D. 
Suspension of MS4 access.
(1) 
Suspension due to illicit discharges in emergency situations. The City Engineer may, without prior notice, suspend MS4 discharge access to a person when, in the opinion of the City Engineer, such suspension is necessary to stop an actual or threatened discharge that presents, or may present, imminent and substantial danger to the environment, the health, safety, or welfare of persons, the MS4, or to waters of the State of Wisconsin. If the violator fails to comply with a suspension order issued in an emergency, the City Engineer may take steps as deemed necessary to prevent or minimize damage to the MS4 or waters of the state of Wisconsin, or to minimize danger to persons.
(2) 
Suspension due to the detection of illicit discharge. Any person discharging to the MS4 in violation of this article may have their MS4 access terminated if such termination would abate or reduce an illicit discharge. The City Engineer will notify a violator of the proposed termination of its MS4 access. The violator may appeal the decision of the City Engineer under § 393-14.1.
E. 
Monitoring of illicit discharges.
(1) 
The City Engineer shall be permitted to enter and inspect facilities subject to regulation under this article as often as may be necessary to determine compliance with this article.
(2) 
Facility operators shall allow the City Engineer ready access to all parts of the premises for the full purposes of inspection, sampling, examination any copying of records that must be kept under conditions of a WPDES permit to discharge stormwater and the performance of any additional duties as defined by state and federal law.
(3) 
Unreasonable delays in allowing the City Engineer access to a permitted facility is a violation of a stormwater discharge permit and of this article. A person who is the operator of a facility with a WPDES permit to discharge stormwater associated with industrial activity commits an offense if the person denies the City Engineer reasonable access to the permitted facility for the purpose of conducting any activity authorized or required by this article.
(4) 
If the City Engineer has been refused access to any part of the premises from which stormwater is discharged, and he/she is able to demonstrate probable cause to believe that there may be a violation of this chapter, or that there is a need to inspect and/or sample as part of a routine inspection and sampling program designed to verify compliance with this article or any order issued hereunder, or to protect the overall public health, safety and welfare of the community, then the City Engineer may, with the assistance of the City Attorney, seek a special inspection warrant from a court having jurisdiction.
F. 
Requirement to prevent, control and reduce stormwater pollutants by the use of best management practices (BMPs). The owner or operator of a commercial or industrial establishment shall provide, at their own expense, reasonable protection from accidental discharge of prohibited materials or other waste into the City's MS4 through the use of these structural and nonstructural BMPs. Further, any person responsible for a property or premises may be required to implement, at said person's expense, additional structural and nonstructural BMPs to prevent the further discharge of pollutants to the municipal separate storm sewer system.
G. 
Watercourse protection. Every person owning property through which a watercourse passes, or such person's lessee, shall keep and maintain that part of the watercourse within the property free of trash, debris, excessive vegetation and other obstacles that would pollute, contaminate or significantly retard the flow of water through the watercourse. In addition, the owner or lessee shall maintain existing privately owned structure within or adjacent to a watercourse so that structures will not become a hazard to the use, function, or physical integrity of the watercourse.
H. 
Notification of spills. Notwithstanding other requirements of law, as soon as any person responsible for a facility or its operation, or responsible for emergency response for a facility or its operation, has information of any known or suspected release of materials which are resulting, or may result in, illegal discharge(s) or pollutant(s) into stormwater, the storm drain system or waters of the State of Wisconsin, said person shall take all necessary steps to ensure the discovery, contaminant and cleanup of such release, including, but not limited to, as follows:
(1) 
In the event of such a release of hazardous materials, said person shall immediately notify emergency response agencies of the occurrence via the City's emergency dispatch services.
(2) 
In the event of a relapse of nonhazardous materials, said person shall notify the City Engineer in person or by phone, email, or facsimile no later than the next business day. Notification in person or by phone shall be confirmed by written notice addressed and mailed to the City Engineer within three business days of the phone notice.
(3) 
If the discharge of prohibited material emanates from a commercial or industrial establishment, the owner or operator of such establishment shall also retain an on-site written record of the discharge and the actions taken to prevent its recurrence. Such records shall be retained for at least three years.
I. 
Illicit discharge enforcement.
(1) 
Whenever the City Engineer has reason to believe that a person has violated a prohibition or failed to meet a requirement of this section, the City Engineer may order compliance by written notice of violation to the responsible person. Such notice may require without limitation:
(a) 
The elimination of illicit connection(s) or discharges;
(b) 
That violating discharges, practices, or operations shall cease-and-desist;
(c) 
The abatement or remediation of stormwater pollution or contaminated hazards and the restoration of any affected property.
(2) 
If the violation(s) is likely to result in damage to properties, public facilities or waters of the state, the City Engineer may enter the land and take corrective actions necessary to prevent such damage. The costs incurred by the City Engineer, plus interest and legal costs, shall be paid by the responsible party.
A. 
Any land-disturbing construction activity or post-construction runoff initiated after the effective date of this article by any person, firm, association, or corporation subject to the provisions of this article shall be deemed a violation unless conducted in accordance with the requirements of this article.
B. 
The City Engineer shall notify the responsible party by mail of any noncomplying land-disturbing construction activity or post-construction runoff. The notice shall describe the nature of the violation, remedial actions needed, a schedule for remedial action, and additional enforcement action which may be taken.
C. 
Upon receipt of written notification from the City Engineer under Subsection B, the responsible party shall correct work that does not comply with the stormwater management plan or other provisions of this article. The responsible party shall make corrections as necessary to meet the specifications and schedule set forth by the City Engineer in the notice.
D. 
If the violations to a permit issued pursuant to this article are likely to result in damage to properties, public facilities, or waters of the state, the City Engineer may enter the land and take emergency actions necessary to prevent such damage. The costs incurred by the City, plus interest and legal costs, shall be billed to the responsible party.
E. 
The City Engineer is authorized to post a stop-work order on all land-disturbing construction activity that is in violation of this article or to request the City Attorney to obtain a cease-and-desist order in any court with jurisdiction.
F. 
The City Engineer may revoke a permit issued under this article for noncompliance with the provisions of this article.
G. 
Any permit revocation, stop-work order, or cease-and-desist order shall remain in effect unless retracted by the City Engineer or by a court with jurisdiction.
H. 
The City Engineer is authorized to refer any violation of this article, or of a stop-work order or cease-and-desist order issued pursuant to this article, to the City Attorney for the commencement of further legal proceedings in any court with jurisdiction.
I. 
Every violation of this article is a public nuisance.
J. 
Any person, firm, association, or corporation who does not comply with the provisions of this article shall be subject to a forfeiture of not less than $100 nor more than $1,000 per offense, together with the costs of prosecution. Each day of each violation exists shall constitute a separate offense.
K. 
Compliance with the provisions of this article may also be enforced by injunction in any court with jurisdiction. It shall not be necessary to prosecute for forfeiture or a cease-and-desist order before resorting to injunctional proceedings.
L. 
When the City Engineer determines that the holder of a permit issued pursuant to this article has failed to follow practices set forth in the stormwater management plan, or has failed to comply with schedules set forth in said stormwater management plan, the City Engineer or a party designated by the City Engineer may enter upon the land and perform the work or other operations necessary to bring the condition of said lands into conformance with requirements of the approved stormwater management plan. The City Engineer shall keep a detailed accounting of the costs and expenses of performing this work. These costs and expenses shall be deducted from any financial security posted pursuant to § 393-11 of this article. Where such a security has not been established, or where such a security is insufficient to cover these costs, the costs and expenses shall be entered on the tax roll as a special charge against the property and collected with any other taxes levied thereon for the year in which the work is completed.
A. 
Board of Appeals. The Board of Appeals created pursuant to section § 17-5 of this Code pursuant to § 62.23(7)(e), Wis. Stats., shall hear and decide appeals where it is alleged that there is error in any order, decision or determination made by the City Engineer in administering this article. The Board shall also use the rules, procedures, duties, and powers authorized by statute in hearing and deciding appeals. Upon appeal, the Board may authorize variances from the provisions of this article that are not contrary to the public interest, and where owing to special conditions a literal enforcement of the article will result in unnecessary hardship.
B. 
Who may appeal. Appeals to the Board of Appeals may be taken by any aggrieved person or by an officer, department, board or bureau of the City affected by any decision of the City Engineer.