The terms used in this chapter shall have the following meaning:
AFFECTEDAs used in §
526-14C(5) of this chapter, means that a regulated activity has significantly:
A. Caused negative impacts on water quality, water quantity and flooding, or the use or maintenance of one's property or business; or
Endangered one's health, safety or general welfare.
BEST MANAGEMENT PRACTICEA practice, technique or measure that is an effective, practical means of preventing or reducing soil erosion and/or water pollution from runoff both during and after land development activities. These can include structural, vegetative or management practices.
COMMON PLAN OF DEVELOPMENTAll lands included within the boundary of one or more certified surveys or other land divisions where multiple, separate and distinct land development activity may occur at different times.
CONNECTED IMPERVIOUSNESSAn impervious surface connected to the waters of the state via a separate storm sewer, an impervious flow path, or a minimally pervious flow path.
DESIGN STORMA hypothetical depth of rainfall that would occur for the stated return frequency (e.g., two-year or ten-year) and duration (e.g., twenty-four-hour). All values are based on the historical rainfall records for the area and are available for reference in many publications. [Note: See §
526-10A of this chapter for a table of applicable design storms for Washington County.]
Any area that, due to the natural resources present or the lack of filtering capacity, is significantly more susceptible to the negative impacts of sedimentation and other pollutants associated with erosion and urban runoff. Examples include direct hydrologic connections to lakes, stream, wetlands or other water resources, very coarse or shallow soils to groundwater or bedrock, or areas inhabited by endangered resources.
FINAL GRADINGThe placement of topsoil over disturbed areas in accordance with the requirements of §
526-8C of this chapter.
Any discharge to a municipal separate storm sewer that is not composed entirely of runoff, except discharges authorized by a WPDES permit or any other discharge not requiring a WPDES permit such as later line flushing, landscape irrigation, individual residential car washing, firefighting and similar discharges.
IMPERVIOUS SURFACEAny land cover that prevents rain or melting snow from soaking into the ground, such as roofs (including overhangs), roads, sidewalks, patios, driveways and parking lots. For purposes of this chapter, all road, driveway or parking surfaces, including gravel, shall be considered impervious, unless specifically designed to encourage infiltration and approved by the Village Engineer.
IMPRACTICALThat complying with a specific requirement would cause undue economic hardship and that special conditions exist which are beyond the control of the applicant and would prevent compliance.
IN-FILLAn 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.
INFILTRATIONThe process by which rainfall or runoff seeps into the soil.
INTERCEPT SOIL TRANSPORTThe process of trying to prevent delivery of sediment by installing a silt fence or some other form of sediment trap in the flow path to slow flows and settle the suspended soil particles.
LAND DEVELOPMENT ACTIVITYAny construction related activity that results in the addition or replacement of impervious surfaces such as rooftops, roads, parking lots and other structures.
LAND DISTURBING ACTIVITYAny construction related activity that exposes soil to the erosive forces of wind, rain and snow melt. Land disturbing activities include removing vegetative cover, grading, excavating and filling. It does not include the planting, growing and harvesting of agricultural crops or mining activity that is otherwise regulated through a local mine reclamation ordinance.
NO APPRECIABLE OFF-SITE IMPACTThat the impact of any land disturbing or land development activity on off-site property or natural resources would be negligible due to site conditions, such as internal drainage or a very large vegetative buffer area surrounding a small building project.
PEAK FLOWThe highest flow rate of runoff, as estimated by calculations and measured in cubic feet per second, that would normally result from a given design storm.
PERMANENT BEST MANAGEMENT PRACTICEAny best management practice that is designed to remain in place after the development is complete. They are designed to stabilize the site or to permanently manage stormwater runoff.
PRACTICALThat complying with a specific requirement does not cause undue economic hardship and that special conditions do not exist which are beyond the control of the applicant and would prevent compliance.
PREDEVELOPMENT CONDITIONThe conditions of the land surface, including vegetative cover and natural drainage patterns, prior to the proposed land development activity. For purposes of this chapter, all predevelopment conditions shall assume good land management and good hydrologic condition.
REGIONAL STORMWATER MANAGEMENT PLANA published document that establishes a planned course of action for managing stormwater runoff from an entire drainage area or watershed, including future land development activities within the watershed. A regional stormwater management plan will recommend the use of best management practices for individual development sites and for selected points within the watershed to meet the goals and objectives of the plan.
RESPONSIBLE PARTYFor purposes of determining the responsible party or parties for any enforcement action under this chapter, the phrase "person, firm, association, corporation or other entity" as used in this chapter shall include, as the context requires, any owner, lessee, tenant, mortgagee, trustee, land contract vendor or vendee, or other holder of any legal or equitable interest in the particular land subject to this chapter and shall also include any contractor, subcontractor, engineer, consultant, agent or employee retained or acting on behalf of any of the preceding and having any material responsibility or having undertaken any activity with respect to the particular land subject to this chapter.
ROADSAs used in §
526-5B(2) of this chapter, means any access drive that serves more than two residences or businesses.
Any rain or melting snow that flows over the ground surface. (Also referred to as "stormwater runoff.")
SHORELAND/WETLAND/FLOODPLAIN ZONEThe land area that is within the districts identified as the shoreland/wetland/floodplain zone on the Official Zoning Maps of the Village of Slinger. The shoreland zone generally includes all lands within 300 feet of a navigable stream or 1,000 feet from a lake shore. The wetland and floodplain zoning districts may extend beyond the shoreland zone.
SOIL DETACHMENTThe first step in the soil erosion process, or the dislodging of the soil particle from raindrop impact, water flow or wind. After detachment, the soil particle can be suspended and carried in runoff or wind to another site. Soil detachment is reduced by providing a vegetative or synthetic cover over the soil surface or through the application of soil treatment measures designed for this purpose.
STABILIZEDThat vegetation is well established or other surfacing material is in place and the risk of further soil erosion is minimal.
STORMWATER MANAGEMENTAny measures taken to permanently reduce or minimize the negative impacts of stormwater runoff quantity and quality from urban areas after land development activities.
STORMWATER MANAGEMENT FACILITYAny structural best management practice, such as a retention pond, infiltration basin or other physical structure, that is designed to collect and permanently manage the quantity and/or quality of stormwater runoff.
SUBSOILThe "B" horizon in any natural soil profile. Natural soil profiles are described in detail in the Soil Survey of Washington County.
TEMPORARY BEST MANAGEMENT PRACTICEAny best management practice that is intended to reduce soil erosion and/or sediment in runoff during the construction phase only, and is intended to be removed after the site is stabilized.
TOPSOILThe "A" horizon found in any natural soil profile not formed from organic material. Natural soil profiles are described in detail in the Soil Survey of Washington County.
TOTAL MAXIMUM DAILY LOAD or TMDLThe amount of pollutants specified as a function of one or more water quality parameters, that can be discharged per day into a water quality limited segment and still ensure attainment of the applicable water quality standard.
TOTAL SUSPENDED SOLIDS LOADThe total weight of material, including sediment and other solids, that is assumed to be carried in the runoff water and discharged from the site based on runoff models for urban lands. For best management practice design purposes, a five-micron particle size is usually selected as a target to achieve 80% total suspended solids removal rate, as required in §
526-9D of this chapter.
The total area of land where runoff drains to a specific point on the landscape. It is also referred to as the "drainage area."
WETLAND FUNCTIONAL VALUESThe type, quality and significance of the ecological and cultural benefits provided by the wetland, such as: flood storage, water quality protection, groundwater recharge and discharge, shoreline protection, fish and wildlife habitat, floral diversity, aesthetics, recreation and education.
WORKING DAYA day when the administering authority and other local businesses are routinely and customarily open for business, not including Saturdays, Sundays or scheduled holidays. When used in §
526-8 of this chapter, relating to specific erosion control requirements, the term "working days" shall not include any days that site stabilization activities could not reasonably be carried out due to inclement weather conditions.