Trans 401.106(5)(d)1.1. Areas associated with tier 1 industrial facilities identified in s. NR 216.21 (2) (a), including storage, loading, rooftop and parking.

Trans 401.106(5)(d)2.2. Storage and loading areas of tier 2 industrial facilities identified in s. NR 216.21 (2) (b).

Trans 401.106(5)(d)3.3. Fueling and vehicle maintenance areas.

Trans 401.106(5)(d)4.4. Areas within 1000 feet upgradient or within 100 feet downgradient of karst features.

Trans 401.106(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.

Trans 401.106(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.

Trans 401.106(5)(d)7.7. Areas within 400 feet of a well serving a community water system as specified in ch. NR 811 or within 100 feet of a well serving a non-community or private water system as specified in ch. NR 812 for runoff infiltrated from commercial, industrial and institutional land uses or regional devices for residential development.

Trans 401.106(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.

Trans 401.106(5)(d)9.9. Any area where the soil does not exhibit any of the following characteristics between the bottom of the infiltration system and seasonal high groundwater and top of bedrock:

Trans 401.106(5)(d)9.a.a. At least a 3-foot soil layer with 20 percent fines or greater. In this subdivision paragraph, “percent fines” means the percentage of a given sample of soil, which passes through a #200 sieve.

Trans 401.106(5)(d)9.b.b. At least a 5-foot soil layer with 10 percent fines or greater. In this subdivision paragraph, “percent fines” means the percentage of a given sample of soil, which passes through a #200 sieve.

Trans 401.106(5)(d)9.c.c. Where the soil medium within the infiltration system does not filter pollutants from water at least as effectively as the soils described in subd. 9. a. or b.

Trans 401.106(5)(e)(e) Projects undertaken in the following areas are not required to meet the requirements of this subsection:

Trans 401.106(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.

Trans 401.106(5)(e)2.2. Parking areas and access roads less than 5,000 square feet for commercial and industrial development.

Trans 401.106(5)(e)3.3. Areas in which a new project is replacing existing residential, commercial, industrial or institutional land uses or associated roads, or both.

Trans 401.106(5)(e)4.4. Undeveloped areas of less than 5 acres located within existing urban sewer service areas and surrounded by existing, residential, commercial, industrial or institutional land uses.

Trans 401.106(5)(e)5.5. Any area during periods when the soil at that area is frozen.

Trans 401.106(5)(e)6.6. Roads in commercial, industrial and institutional land uses, and arterial residential roads.

Trans 401.106(5)(e)7.7. Highways.

Trans 401.106(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.

Trans 401.106(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 as determined under ch. NR 140. However, if specific information indicates that compliance with a preventive action limit is not achievable at that location, then the infiltration system may not be installed or shall be modified to prevent infiltration to the maximum extent practicable.

Trans 401.106(5)(g)2.2. Notwithstanding subd. 1., the discharge from BMPs shall remain below the enforcement standard at the point of standards application, as determined under ch. NR 140.

Trans 401.106(6)(a)(a) In this subsection, “buffer area” means an area of land that commences at the ordinary high-water mark of lakes, streams and rivers, or at the delineated boundary of wetlands, and that is the greatest of the following applicable widths, as measured horizontally from the ordinary high-water mark or delineated wetland boundary:

Trans 401.106(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.

Trans 401.106(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.