Wis. Admin. Code Department of Natural Resources NR 216.002

Current through October 28, 2024

Section NR 216.002 - Definitions

For the purposes of this chapter the following definitions are applicable:

Note: Additional definitions may be found in s. NR 205.03.

(1m) "Benchmark" means a minimum numeric or narrative level of pollution control required to demonstrate progress toward a required level of pollution control.

(1r) "Best management practices" or "BMPs" means structural or non-structural measures, practices, techniques or devices employed to avoid or minimize soil, sediment or pollutants carried in runoff to waters of the state.

(2) "Construction site" means an area upon which one or more land disturbing construction activities occur that in total will disturb one acre or more of land, 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 such that the total disturbed area is one acre or more. A long-range planning document that describes separate construction projects, such as a 20-year transportation improvement plan, is not a common plan of development.

(3) "Contaminated storm water" means storm water 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 s. NR 216.27(3) (e).

(4) "Department" means the department of natural resources.

(5) "Discharge" has the meaning given it in s. 283.01(4), Stats.

(6) "Discharge of pollutant" or "discharge of pollutants" has the meaning given it in s. 283.01(5), Stats.

(7) "Erosion" means the process by which the land's surface is worn away by the action of wind, water, ice or gravity.

(7m) "Exceptional resource water" or "ERW" means waters designated under s. NR 102.11.

(8) "Final stabilization" means that all land disturbing construction activities at the construction site have been completed and that 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.

(9) "General WPDES permit" or "general permit" means a permit for the discharge of pollutants issued by the department under s. 283.35, Stats.

(10) "Great Lakes areas of concern" means geographic areas that are severely degraded within the Great Lakes basin that include areas within the lower Fox river and Green Bay, Menominee river, Sheboygan river, St. Louis river and bay and the Milwaukee estuary.

(11) "Illicit discharge" means any discharge to a municipal separate storm sewer system that is not composed entirely of storm water except discharges authorized by a WPDES permit or other discharge not requiring a WPDES permit such as landscape irrigation, individual residential car washing, fire fighting, 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.

Note: A discharge listed in the definition above may be regulated on a case-by-case basis under s. NR 216.07(3) (b) or s. 283.31, Stats., if the MS4 permittee, municipality, or the department identifies it as a significant source of a pollutant to waters of the state.

(12) "Impaired water" means a waterbody impaired in whole or in part and listed by the department pursuant to 33 USC 1313(d) (1) (A) and 40 CFR 130.7, for not meeting a water quality standard, including a water quality standard for a specific substance or the waterbody's designated use.

(12m) "Individual permit" means a permit for the discharge of pollutants by an individual or group issued by the department under s. 283.33, Stats.

(13) "Infiltration system" means 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.

(14) "Land disturbing construction activity" means any man-made alteration of the land surface resulting in a change in the topography or existing vegetative or non-vegetative soil cover that may result in storm water runoff and lead to increased 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.

(15) "Landowner" means any person holding fee title, an easement or other interest in property that allows the person to undertake land disturbing construction activity on the property.

(16) "Major outfall" means a municipal separate storm sewer system outfall that meets one of the following criteria:

(a) A single pipe with an inside diameter of 36 inches or more, or from an equivalent conveyance (cross sectional area of 1,018 inch 2) which is associated with a drainage area of more than 50 acres.

(b) A municipal separate storm sewer system that receives storm water runoff from lands zoned for industrial activity that is associated with a drainage area of more than 2 acres or from other lands with 2 or more acres of industrial activity, but not land zoned for industrial activity that does not have any industrial activity present is not classified as a major outfall under this paragraph.

(17) "Municipal separate storm sewer system" or "MS4" means a conveyance or system of conveyances including roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, constructed channels or storm drains, which meets all the following criteria:

(a) Owned or operated by a municipality.

(b) Designed or used for collecting or conveying storm water.

(c) Which is not a combined sewer conveying both sanitary and storm water.

(d) Which is not part of a publicly owned wastewater treatment works that provides secondary or more stringent treatment.

(18) "Municipality" means any city, town, village, county, county utility district, town sanitary district, town utility district, school district or metropolitan sewage district or any other public entity created pursuant to law and having authority to collect, treat or dispose of sewage, industrial wastes, storm water or other wastes.

(18m) "Notice of intent" or "NOI" means an application for coverage under a WPDES permit. Except as otherwise provided in this chapter, NOI and application mean the same thing.

(19) "Outfall" means the point at which storm water is discharged to waters of the state or to a storm sewer.

(19m) "Outstanding resource water" or "ORW" means waters designated under s. NR 102.10.

(20) "Permittee" means a person who has applied for and received WPDES permit coverage for storm water discharge under this chapter.

(21) "Person" means an individual, owner, operator, corporation, partnership, association, municipality, interstate agency, state agency or federal agency.

(22) "Point source" means a discernible, confined and discrete conveyance of storm water for which a permit is required under s. 283.33, Stats.

(23) "Pollutant" has the meaning given it in s. 283.01(13), Stats.

(23m) "Pollutant of concern" means a pollutant that has been identified as contributing to a water quality impairment of an impaired water.

(24) "Pollution" has the meaning given it in s. 283.01(14), Stats.

(25) "Pollution prevention" means taking measures to eliminate or reduce pollution.

(25m) "Receiving water" means the portion of a surface water that will be affected by an existing, proposed new, or increased discharge. Receiving water includes downstream surface waters that are affected by the discharge.

(26) "Section 313 water priority chemical" means a chemical or chemical category which is all of the following:

(a) Listed at 40 CFR 372.65 pursuant to 42 USC 11023.

(b) Present at or above threshold levels at a facility subject to EPCRA s. 313 reporting requirements.

(c) Listed in appendix D of 40 CFR 122 on either table II, table III or table V or is listed as a hazardous substance pursuant to 33 USC 1321(b) (2) (A) of the clean water act at 40 CFR 116.4.

(27) "Sediment" means settleable solid material that is transported by runoff, suspended within runoff or deposited by runoff away from its original location.

(28) "SIC" means standard industrial classification. SIC codes cited in this chapter are from the 1987 edition of the Standard Industrial Classification Manual.

(29) "Significant contributor" means a person who discharges to waters of the state pollutants that contribute to or have the reasonable potential to contribute to an exceedence of a water quality standard.

(30) "Significant materials" means materials related to industrial activity that may contaminate storm water, including: raw materials; fuels; materials such as solvents, detergents and plastic pellets; finished materials such as metallic products; raw materials used in food processing or production; hazardous substances designated under 42 USC 9601 to 9675; any chemical the facility is required to report pursuant to 42 USC 11023; fertilizers; pesticides; and waste products such as ashes, slag and sludge that have the potential to be released with storm water discharges.

Note:42 USC 9601 to 9675 is also known as the comprehensive environmental response, compensation and liability act (CERCLA). 42 USC 11023 is also known as the emergency planning and community right-to-know act (EPCRA), or as section 313 of title III of the superfund amendments and reauthorization act (SARA) of 1986.

(31) "Source area controls" means best management practices intended to prevent storm water runoff from contacting materials that can potentially contaminate it or if contact occurs, to reduce pollutants at the source of contamination.

(32) "Stabilize" means the process of making a site steadfast or firm, minimizing soil movement by the use of practices such as mulching and seeding, sodding, landscaping, paving, graveling or other appropriate measures.

(33) "Storm water" means runoff from precipitation including rain, snow, ice melt or similar water that moves on the land surface via sheet or channelized flow.

(34) "Storm water outfall" means the point where a municipal separate storm sewer system discharges to waters of the state, or leaves one municipality and enters another.

(35) "SWPPP" means storm water pollution prevention plan.

(36) "TMDL" has the meaning given it in 40 CFR 130.2(i).

(36m) "TMDL implementation plan" means a list of specific and identifiable steps and actions a permittee intends to undertake and complete to meet a TMDL wasteload allocation.

(36r) "Total Suspended Solids" or "TSS" means settleable solid material that is transported by runoff or suspended within runoff.

(37) "Treatment BMP" means a storm water treatment system, works or practice that is designed to reduce or remove pollutants from contaminated storm water.

(38) "Urbanized area" means a place and the adjacent densely settled surrounding territory that together have a minimum population of 50,000 people, as determined by the U.S. bureau of the census based on the latest decennial federal census.

(39) "Urban storm water planning area" means the boundary defined by a municipality that serves as the appropriate planning area for the abatement of storm water runoff pollution into waters of the state.

(39g) "US EPA" means the United States environmental protection agency.

(39r) "Wasteload allocation" means the allocation resulting from the process of distributing or apportioning the total maximum load to each individual point source discharge.

(40) "Waters of the state" has the meaning given it in s. 283.01(20), Stats.

(41) "Working day" means any day except Saturday and Sunday and holidays designated in s. 230.35(4) (a), Stats.

(42) "WPDES permit" means a Wisconsin pollutant discharge elimination system permit issued pursuant to ch. 283, Stats.

Wis. Admin. Code Department of Natural Resources NR 216.002

CR 03-028: cr. Register July 2004 No. 583, eff. 8-1-04.

Amended by, correction in (11) (Note) made under s. 35.17(2), Stats., Register November 2017 No. 743, eff. 12/1/2017

Amended by, CR 21-027: cr. (1m), (7m), (12m), (18m), (19m), (23m), (25m), (36m), (37m), (39g), (39r) Register March 2022 No. 795, eff. 4-1-22; (1), (37m) renum. to (1r), (36r) under 13.92 (4) (b) 1., Stats., Register March 2022 No. 795, eff. 4/1/2022