NR 151.11(6)(c)(c) Where appropriate, the plan shall include sediment controls to do all of the following to the maximum extent practicable: NR 151.11(6)(c)1.1. Prevent tracking of sediment from the construction site onto roads and other paved surfaces. NR 151.11(6)(c)3.3. Protect separate storm drain inlet structures from receiving sediment. NR 151.11(6)(d)(d) The use, storage and disposal of chemicals, cement and other compounds and materials used on the construction site shall be managed during the construction period to prevent their transport by runoff into waters of the state. However, projects that require the placement of these materials in waters of the state, such as constructing bridge footings or BMP installations, are not prohibited by this paragraph. NR 151.11(6m)(6m) Post-January 1, 2011 requirements. The plan required under sub. (5) shall meet all of the following: NR 151.11(6m)(a)(a) Erosion and sediment control practices. Erosion and sediment control practices at each site where land disturbing construction activity is to occur shall be used to prevent or reduce all of the following: NR 151.11(6m)(a)2.2. The discharge of sediment from disturbed areas into on-site storm water inlets. NR 151.11(6m)(a)3.3. The discharge of sediment from disturbed areas into adjacent waters of the state. NR 151.11(6m)(a)6.6. The discharge of sediment eroding from soil stockpiles existing for more than 7 days. NR 151.11(6m)(a)7.7. The discharge of sediment from erosive flows at outlets and in downstream channels. NR 151.11(6m)(a)8.8. The transport by runoff into waters of the state of chemicals, cement, and other building compounds and materials on the construction site during the construction period. However, projects that require the placement of these materials in waters of the state, such as constructing bridge footings or BMP installations, are not prohibited by this subdivision. NR 151.11(6m)(a)9.9. The transport by runoff into waters of the state of untreated wash water from vehicle and wheel washing. NR 151.11 NoteNote: Wastewaters, such as from concrete truck washout, needs to be properly managed to limit the discharge of pollutants to waters of the state. A separate permit may be needed from the department where a wastewater discharge has the potential to adversely impact waters of the state. The appropriate department wastewater specialist should be contacted to determine if wastewater permit coverage is needed where wastewater will be discharged to waters of the state.
NR 151.11(6m)(b)(b) Sediment performance standards. In addition to the erosion and sediment control practices under par. (a), the following erosion and sediment control practices shall be employed: NR 151.11(6m)(b)1.1. For construction sites for which the department received a notice of intent for the construction project in accordance with subch. III of ch. NR 216, within 2 years after January 1, 2011, BMPs that, by design, achieve a reduction of 80 percent, or to the maximum extent practicable, of the sediment load carried in runoff, on an average annual basis, as compared with no sediment or erosion controls, until the construction site has undergone final stabilization. NR 151.11(6m)(b)2.2. For construction sites for which the department received a notice of intent for the construction project in accordance with subch. III of ch. NR 216, 2 years or more after January 1, 2011, BMPs that, by design, discharge no more than 5 tons per acre per year, or to the maximum extent practicable, of the sediment load carried in runoff from initial grading to final stabilization. NR 151.11(6m)(b)3.3. The department may not require any person to employ more BMPs than are needed to meet a performance standard in order to comply with maximum extent practicable. Erosion and sediment control BMPs may be combined to meet the requirements of this paragraph. The department may give credit toward meeting the sediment performance standard of this paragraph for limiting the duration or area, or both, of land disturbing construction activity, or for other appropriate mechanisms. NR 151.11(6m)(b)4.4. Notwithstanding subd. 1. or 2., if BMPs cannot be designed and implemented to meet the sediment performance standard, the plan shall include a written, site-specific explanation of why the sediment performance standard cannot be met and how the sediment load will be reduced to the maximum extent practicable. NR 151.11 NoteNote: The department of natural resources has developed guidance document no. 3800-2017-03 to assist with compliance with the 5 tons per acre sediment performance standard.
NR 151.11 NoteNote: In accordance with subch. V, the department has developed technical standards to help meet the construction site performance standards. These technical standards are available from the department at dnr.wi.gov.
NR 151.11(6m)(c)(c) Preventive measures. The plan shall incorporate all of the following: NR 151.11(6m)(c)1.1. Maintenance of existing vegetation, especially adjacent to surface waters whenever possible. NR 151.11(6m)(c)3.3. Minimization of land disturbing construction activity on slopes of 20% or more.