Section NR 121.03 - Definitions(1) "Areawide water quality management plan" or areawide waste treatment management plan means a plan for managing, protecting and enhancing groundwater and surface water quality which considers the interrelationship of water quality and land and water resources on an areawide basis (hydrologic, political, or other).(2) "Areawide water quality management plans for designated areas" means areawide water quality management plans prepared by agencies designated by the governor in areas of the state similarly designated.(3) "Areawide water quality management plans for nondesignated areas" means areawide water quality management plans prepared by the department for all areas of the state not designated by the governor.(4) "Best management practices" as defined in s. 281.65(2) (a), Stats., means practices, techniques or measures, identified in areawide water quality management plans, which are determined to be the most effective, practicable means of preventing or reducing pollutants generated from nonpoint sources to a level compatible with water quality goals.(5) "Cost-effectiveness analysis" means a systematic comparison of alternative means of meeting state water quality standards, effluent limitations or other treatment standards in order to identify the alternative which will minimize the total resources costs over the planning period. These resources costs include monetary costs and environmental as well as other non-monetary costs.(6) "Critical water quality conditions" means those ambient water conditions upon which the most stringent water quality effluent requirements are based.(7) "Department" means the department of natural resources.(8) "Designated management agency" means any agency designated in an areawide water quality management plan having responsibility for implementing specific plan recommendations. This may be done through direct activities of the designated management agency or through delegation to other agencies or units of government.(9) "Effluent limitation" as defined in s. 283.01(6), Stats., means any restriction established by the department, including schedules of compliance, on quantities, rates, and concentrations of chemical, physical, biological, and other constituents which are discharged from point sources into the waters of this state.(10) "Point source", as defined in s. 283.01(12), Stats., means any discernible, confined and discrete conveyance, including but not limited to any pipe, ditch, channel, tunnel, conduit, well, discrete fissure, container, rolling stock, concentrated animal feeding operation or vessel or other floating craft from which pollutants may be discharged either into the waters of this state or into a publicly owned treatment works. Point source shall not include diffused surface drainage or any ditch or channel which serves only to intermittently drain excess surface water from rain or melting snow and is not used as a means of conveying pollutants into waters of the state. Point source shall not include uncontrolled discharges composed entirely of storm runoff when these discharges are uncontaminated by any industrial or commercial activity, unless the particular storm runoff discharge has been identified by the department as a significant contributor of pollution.(11) "Priority watershed" means a watershed of manageable size, delineated in the areawide water quality management plan and selected according to the procedures specified in s. NR 121.07.(12) "Public participation process" means those activities developed for involving individual members of the public, local governmental officials, and interest groups in the areawide water quality management planning process. These activities may include: the dissemination of information to the public including plan documents and summaries in lay terms, outreach activities to identify interested members of the public, the actual involvement of the public in the decision-making process which leads to the preparation and implementation of an areawide water quality management plan, and response to the public on how their input was used. This process normally includes both public meetings and public informational hearings.(13) "Nonpoint source" as set forth in s. 281.65(2) (b), Stats., means a land management or use activity contributing to runoff, seepage or percolation; and are sources which are not defined as a point source under s. 283.01(12), Stats.(14) "Residual wastes" means waste materials resulting from the treatment of wastes or wastewater.(15) "Sewer service area" means that area presently served and anticipated to be served by a sewage collection system.(16) "Total maximum daily load" means the 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 insure attainment of the applicable water quality standard. There are 4 components to the total maximum daily load: point source allocation, nonpoint source allocation, reserve capacity and margin of safety.(17) "Waste load allocation" means the assignment of a portion of the total maximum daily load to each of the discharges to a water quality limited segment, such that the summation of these individual loadings does not exceed the total maximum daily load.(18) "Water pollution", as defined in s. 283.01(14), Stats., means man-made or man-induced alteration of the chemical, physical, biological or radiological integrity of water.(19) "Water quality standards" means standards established by the department pursuant to s. 281.15, Stats., of the physical, chemical or biological characteristics or both of a water which must be maintained to make it suitable for specified uses.(20) "Water quality limited segment" means any area or portion of a stream which will not meet the established water quality standard with application of only categorical effluent limitations to all point sources.(21) "Watershed" means a hydrologically related land unit delineated for the purpose of instituting water quality management activities. Generally, the maximum size of a watershed should not exceed 200,000 acres.Wis. Admin. Code Department of Natural Resources NR 121.03
Cr. Register, January, 1979, No. 277, eff. 2-1-79; am. (1), (19) and (20), r. and recr. (6), r. (10), renum. (11) and (12) to be (10) and (11), renum. (13) to be (12) and am., cr. (13), Register, August, 1981, No. 308, eff. 9-1-81; corrections in (4), (9), (10), (11), (13), (18), (19) made under s. 13.92(4) (b) 7, Stats., Register March 2011 No. 663.