NR 151.24(5)(d)4.4. Areas within 1000 feet upgradient or within 100 feet downgradient of karst features. NR 151.24(5)(d)5.5. Areas with less than 3 feet separation distance from the bottom of the infiltration system to the elevation of seasonal high groundwater or the top of bedrock. NR 151.24(5)(d)6.6. Areas with runoff from industrial, commercial and institutional parking lots and roads and residential arterial roads with less than 5 feet separation distance from the bottom of the infiltration system to the elevation of seasonal high groundwater or the top of bedrock. NR 151.24(5)(d)7.7. Areas within 400 feet of a community water system well as specified in s. NR 811.16 (4) or within 100 feet of a private well as specified in s. NR 812.08 (4) for runoff infiltrated from commercial, industrial and institutional land uses or regional devices for residential development. NR 151.24(5)(d)8.8. Areas where contaminants of concern, as defined in s. NR 720.03 (2), are present in the soil through which infiltration will occur. NR 151.24(5)(d)9.9. Any area where the soil does not exhibit one of the following characteristics between the bottom of the infiltration system and seasonal high groundwater and top of bedrock: NR 151.24(5)(d)9.c.c. Where the soil medium within the infiltration system does not provide an equivalent level of protection. NR 151.24 NoteNote: The areas listed in par. (d) are prohibited from infiltrating runoff due to the potential for groundwater contamination.
NR 151.24(5)(e)(e) Transportation facilities located in the following areas and otherwise subject to the requirements of this subchapter are not required to meet the requirements of this subsection: NR 151.24(5)(e)1.1. Areas where the infiltration rate of the soil is less than 0.6 inches/hour measured at the bottom of the infiltration system. NR 151.24(5)(e)2.2. Parking areas and access roads less than 5,000 square feet for commercial and industrial development. NR 151.24(5)(e)5.5. Infiltration areas during periods when the soil on the site is frozen. NR 151.24(5)(e)6.6. Roads in commercial, industrial and institutional land uses, and arterial residential roads. NR 151.24(5)(f)(f) Where alternate uses of runoff are employed, such as for toilet flushing, laundry or irrigation, such alternate use shall be given equal credit toward the infiltration volume required by this subsection. NR 151.24(5)(g)1.1. Infiltration systems designed in accordance with this subsection shall, to the extent technically and economically feasible, minimize the level of pollutants infiltrating to groundwater and shall maintain compliance with the preventive action limit at a point of standards application in accordance with ch. NR 140. However, if site specific information indicates that compliance with a preventive action limit is not achievable, then the infiltration BMP may not be installed or shall be modified to prevent infiltration to the maximum extent practicable. NR 151.24(5)(g)2.2. Notwithstanding subd.1., the discharge from BMPs shall remain below the enforcement standard at the point of standards application. NR 151.24(6)(a)(a) In this subsection, “protective area” means an area of land that commences at the top of the channel of lakes, streams and rivers, or at the delineated boundary of wetlands, and that is the greatest of the following widths, as measured horizontally from the top of the channel or delineated wetland boundary to the closest impervious surface. However, in this paragraph, “protective area” does not include any area of land adjacent to any stream enclosed within a pipe or culvert, such that runoff cannot enter the enclosure at this location. NR 151.24(6)(a)1.1. For outstanding resource waters and exceptional resource waters, and for wetlands in areas of special natural resource interest as specified in s. NR 103.04, 75 feet. NR 151.24(6)(a)2.2. For perennial and intermittent streams identified on a United States geological survey 7.5-minute series topographic map, or a county soil survey map, whichever is more current, 50 feet. NR 151.24(6)(a)4.4. For highly susceptible wetlands, 50 feet. Highly susceptible wetlands include the following types: fens, sedge meadows, bogs, low prairies, conifer swamps, shrub swamps, other forested wetlands, fresh wet meadows, shallow marshes, deep marshes and seasonally flooded basins. Wetland boundary delineation shall be made in accordance with s. NR 103.08 (1m). This paragraph does not apply to wetlands that have been completely filled in accordance with all applicable state and federal regulations. The protective area for wetlands that have been partially filled in accordance with all applicable state and federal regulations shall be measured from the wetland boundary delineation after fill has been placed.