As used in this chapter, the following terms shall have the meanings
indicated:
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 (BMP)
Structural or nonstructural measures, practices, techniques,
or devices employed to prevent or reduce the discharge of pollutants
directly or indirectly to stormwater, stormwater conveyance systems,
or waters of the state by avoiding or minimizing soil, sediment or
other pollutants carried in stormwater. BMPs include schedules of
activities; prohibitions of practices; general good housekeeping practices;
pollution prevention and educational practices; maintenance procedures;
treatment practices; operating procedures and practices to control
site runoff, spillage, leaks, sludge, water disposal, drainage from
raw materials storage; and other management practices.
CITY'S DESIGNEE
Employees or agents of the City of Hudson designated to enforce
this chapter.
CONNECTED IMPERVIOUSNESS
An impervious surface connected to the waters of the state
via a separate storm sewer, an impervious flow path, or a minimally
pervious flow path.
CONSTRUCTION SITE
An area upon which one or more land-disturbing construction
activities occur, including areas that are part of a larger common
plan of development or sale where multiple separate and distinct land-disturbing
construction activities may be taking place at different times on
different schedules but under one plan.
CONTAMINATED STORMWATER
Stormwater that comes into contact with material-handling
equipment or activities, raw materials, intermediate products, final
products, waste materials, byproducts or industrial machinery in the
source areas listed in Ch. NR 216, Wis. Adm. Code.
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.
DIRECT CONDUITS TO GROUNDWATER
Wells, sinkholes, swallets, fractured bedrock at the surface,
mine shafts, nonmetallic mines, tile inlets discharging to groundwater,
quarries, or depressional groundwater recharge areas over shallow
fractured bedrock.
DISCHARGE
As defined in W.S.A. Ch. 283, and any amendments thereto,
when used without the qualification, includes a discharge of any pollutant
to the waters of this state from any point source.
EROSION CONTROL PLAN
A comprehensive plan developed to address pollution caused
by erosion and sedimentation of soil particles or rock fragments during
construction.
FILTERING LAYER
Soil that has at least a three-foot-deep layer with at least
20% fines; or at least a five-foot-deep layer with at least 10% fines;
or an engineered soil with an equivalent level of protection as determined
by the regulatory authority for the site.
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
that employ equivalent permanent stabilization measures.
HAZARDOUS MATERIALS
Any material, including any substance, waste, or combination
thereof, which, because of its quantity, concentration, or physical,
chemical, or infectious characteristics, may cause, or significantly
contribute to, a substantial present or potential hazard to human
health, safety, property, or the environment when improperly treated,
stored, transported, disposed of, or otherwise managed.
ILLICIT CONNECTION
Any connection that is either:
(1)
Any drain or conveyance whether on the surface or subsurface,
which allows an illegal discharge to enter the stormwater conveyance
system or waters of the state. This includes but is not limited to
any conveyances which allow any nonstormwater discharge, including
sewage, process wastewater and wash water, to enter the stormwater
conveyance system or waters of the state. It also includes any connections
to the stormwater conveyance system or waters of the state from indoor
drains and sinks, regardless of whether said drain or connection had
been previously allowed, permitted, or approved by an authorized enforcement
agency; or
(2)
Any drain or conveyance connected from a commercial or industrial
land use to the storm drain system which has not been documented in
plans, maps, or equivalent records and approved by an authorized enforcement
agency.
ILLICIT DISCHARGE
Any discharge to a stormwater conveyance system that is not
composed entirely of stormwater except discharges authorized by a
WPDES permit or other discharge not requiring a WPDES permit limited
to landscape irrigation, individual residential car washing, firefighting,
diverted stream flows, uncontaminated groundwater infiltration, uncontaminated
pumped groundwater, discharges from potable water sources, foundation
drains, air-conditioning condensation, irrigation water, lawn watering,
flows from riparian habitats and wetlands, and similar discharges.
IMPERVIOUS AREA
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, gravel or paved parking lots, and streets shall
be considered impervious unless specifically designed to encourage
infiltration and approved by the City.
IMPROVED PARCELS
Those parcels for which the assessed value for structures (as defined in Chapter
255) is greater than zero or would be if the property was
taxable.
IN-FILL
An undeveloped area of land located within an existing urban
sewer service area, surrounded by development or development and natural
or man-made features where development cannot occur.
INDUSTRIAL ACTIVITY
Activities subject to WPDES industrial permits as defined
in 40 CFR 122.26(b)(14) or subject to Wis. Admin. Code NR 216.20.
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 road side channels, designed for
conveyance and pollutant removal only.
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 stump removal, demolition, excavating,
pit trench dewatering, filling and grading activities. This term does
not include agricultural land uses.
MAINTENANCE AGREEMENT
A legal document that provides for long-term maintenance
of stormwater management practices.
MAXIMUM EXTENT PRACTICABLE
The highest level of performance that is achievable but is not equivalent to a performance standard identified in this chapter as determined in accordance with §
240-8 of this chapter.
MUNICIPAL SEPARATE STORM SEWER SYSTEM (MS4)
A conveyance or system of conveyances, including roads with
drainage systems, municipal streets, catch basins, curbs, gutters,
ditches, constructed channels or storm drains, which are regulated
under Ch. NR 216, Wis. Adm. Code.
NEW DEVELOPMENT
Development resulting from the conversion of previously undeveloped
land or agricultural land uses.
NONSTORMWATER DISCHARGE
Any discharge to the stormwater conveyance system or waters
of the state that is not composed entirely of stormwater.
NRCS MSE3 DISTRIBUTION
A specific precipitation distribution developed by the United
States Department of Agriculture, Natural Resources Conservation Service,
using precipitation data from Atlas 14.
OFF-SITE
Located outside the property boundary described in the permit
application.
ON-SITE
Located within the property boundary described in the permit
application.
OWNER
Any person holding fee title, an easement or other interest
in property.
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's designee
to the applicant to conduct land-disturbing construction activity
or to discharge post-construction runoff to waters of the state.
PERSON
An individual, owner, operator, corporation, partnership,
association, municipality, interstate agency, state agency or federal
agency.
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 in W.S.A. § 283.01(13).
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.
PREMISES
Any building, lot, parcel of land, or portion of land, whether
improved or unimproved, including adjacent sidewalks and parking strips.
PROTECTIVE AREA
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.
REDEVELOPMENT
Areas where development is replacing older development.
RUNOFF
Stormwater or precipitation, including rain, snow or ice
melt or similar water, that moves on the land surface via sheet or
channelized flow.
SEDIMENT
Settleable solid material that is transported by runoff,
suspended within runoff or deposited by runoff away from its original
location.
SITE
The entire area included in the legal description of the
parcel or other land division on which the land-disturbing construction
activity is proposed in the permit application.
STORMWATER
Runoff from precipitation, including rain, snow, ice melt
or similar water, that moves on the land surface via sheet or channelized
flow.
STORMWATER MANAGEMENT PLAN
A comprehensive plan designed to control flow rates and volumes,
and reduce the discharge of pollutants from stormwater after the site
has undergone final stabilization following completion of construction
activity.
STORMWATER MANAGEMENT SYSTEM or STORMWATER CONVEYANCE SYSTEM
The existing stormwater collection system of the City, including,
but not limited to, storm sewers, retention ponds, detention ponds,
ditches, drainageways, streams, wetlands, qualifying receiving water,
and all activities undertaken to conserve water, control discharges
necessitated by rainfall events, incorporate methods to collect, convey,
store, absorb, inhibit, treat, use or reuse water to prevent or reduce
flooding, over-drainage, environmental degradation and water pollution
or otherwise affect the quality and quantity of discharge from such
system.
TRANSPORTATION FACILITY
A highway, a railroad, a public mass transit facility, a
public-use airport, a public trail or any other public work for transportation
purposes. Transportation facility does not include building sites
for the construction of public buildings and buildings that are places
of employment that are regulated by the department pursuant to W.S.A.
§ 281.33.
WASTEWATER
Water carrying domestic sanitary wastewater and/or nondomestic
waste.
WPDES STORMWATER DISCHARGE PERMIT
A permit issued by the Wisconsin Department of Natural Resources
under W.S.A. § 283.33 which authorizes the discharge of
stormwater from construction sites, industrial facilities, and selected
municipalities to waters of the state.