NR 243.03(65) (65) “Surface applied manure” means manure applied to the ground surface by moving vehicles that is not incorporated or injected.

NR 243.03(66) (66) “Surface water quality management areas” or “SWQMA” means all of the following:

NR 243.03(66)(a) (a) The area within 1,000 feet from the ordinary high water mark of navigable waters that consist of a lake, pond or flowage.

NR 243.03(66)(b) (b) The area within 1,000 feet from the high water mark of navigable waters that consist of a glacial pothole lake.

NR 243.03(66)(c) (c) The area within 300 feet from the ordinary high water mark of navigable waters that consist of a river or stream or other non-lake navigable waters.

NR 243.03(66)(d) (d) The area within 300 feet of conduits to navigable waters.

NR 243.03(67) (67) “Swallet” means a sinkhole or rock hole that intercepts a stream, diverting all or a portion of it to groundwater.

NR 243.03(68) (68) “303 (d) listed waters” means the list of impaired waters in the state developed by the department pursuant to 33 USC 1313 and 40 CFR 130.7.

NR 243.03(69) (69) “Tolerable soil loss” or “T” means the maximum rate of soil erosion, in tons per acre per year, allowable for particular soils and site conditions that will maintain soil productivity.

NR 243.03 Note Note: Soil loss will be calculated according to the revised universal soil loss equation II as referenced in ch. ATCP 50 or, potentially, SNAP-Plus software currently being developed by UW-Extension.

NR 243.03(70) (70) “25-year, 24-hour rainfall event” means a rainfall event measured in terms of the depth of rainfall occurring within a 24-hour period and having an expected recurrence interval of once in 25 years as identified in Table 1.

NR 243.03(71) (71) “Unacceptable practice” means a practice that causes or has caused the discharge of pollutants to waters of the state or that results in an operation’s failure to comply with livestock performance standards and prohibitions outlined in ch. NR 151.

NR 243.03(72) (72) “Wastewater treatment strip” means a constructed strip or area of vegetation for reducing sediment, organic matter and other pollutants.

NR 243.03(73) (73) “Waters of the state” has the meaning specified under s. 283.01 (20), Stats.

NR 243.03(74) (74) “Water quality management area” or “WQMA” has the meaning in s. NR 151.015 (24).

NR 243.03(75) (75) “Wetland” means areas delineated on a hydric soils map that are dominated by hydrophytic vegetation. Wetlands do not include prior converted or farmed wetlands.

NR 243.03(76) (76) “Wetland functional values” means the values or uses of wetlands established in s. NR 103.03 (1).

NR 243.03(77) (77) “Wet soil” means soil that is not saturated but has a moisture content that limits its ability to absorb significant amounts of additional liquid.

NR 243.03(78) (78) “Winter acute loss index value” means the value calculated using the phosphorus index that identifies the relative level of risk for acute losses of manure and process wastewater pollutants associated with surface applications during frozen or snow-covered conditions.

NR 243.03(79) (79) “WPDES” means the Wisconsin pollutant discharge elimination system established under ch. 283, Stats.

NR 243.03 History History: CR 05-075: cr. Register April 2007 No. 616, eff. 7-1-07.

NR 243.04 NR 243.04 Rainfall events. The design rainfall amount and probable intensity of 25-year, 24-hour and 100-year, 24-hour rainfall events for locations in Wisconsin shall be determined from the data in Table 1, or for a particular location, the determination may be made on the basis of more recent rainfall probability data verified by a government agency and approved by the department for this purpose.

- See PDF for table

NR 243.04 History History: CR 05-075: cr. Register April 2007 No. 616, eff. 7-1-07.

NR 243.05 NR 243.05 Calculating animal units.

NR 243.05(1) (1) General. The total number of animal units at an operation shall be calculated using the methods in both subs. (2) and (3). The department shall compare the totals under both of these methods and shall use the highest calculated total to determine the size of an animal feeding operation. An owner or operator of an animal feeding operation shall use form 3400-25A for calculating the number of animal units present at the operation.

NR 243.05 Note Note: In accordance with the definition in s. NR 243.03(4), animals included in the total count may be housed at more than one site or location.

NR 243.05 Note Note: Form 3400-25A can be obtained at regional offices of the department or the department’s Bureau of Watershed Management, 101 S. Webster St., P.O. Box 7921, Madison, Wisconsin 53707.

NR 243.05(2) (2) Combined animal units. The number of animal units present at an operation shall be calculated by multiplying the number of animals for each animal type by the appropriate equivalency factor in Table 2A. The total number of animal units at the operation is the sum of the calculated animal unit numbers of all animal types present at the operation.