Chapter ATCP 50

ATCP 50.86 ATCP 50.86 Sediment basins.

ATCP 50.86(1) (1) Definition. In this section:

ATCP 50.86(1)(a) (a) “Sediment basins” means permanent basins that reduce the transport of waterborne pollutants such as eroded soil sediment, debris, and manure sediment. Sediment basins may include containment walls or berms, pickets or screens to filter debris, orifices or weirs to control discharge, and conduits to direct runoff to treatment or discharge areas.

ATCP 50.86(1)(b) (b) “Maximum storage capacity” means the volume of water, in acre-feet, capable of being stored behind a dam at maximum water elevation without overtopping any part that is not part of the spillway system.

ATCP 50.86(2) (2) Eligible costs. A cost-share grant under s. ATCP 50.40 may reimburse the cost of designing and constructing a sediment basin, including costs for heavy use area protection, livestock fencing, filter strips, waste transfer, underground outlets, and critical area plantings.

ATCP 50.86(3) (3) Ineligible costs. A cost-share grant under s. ATCP 50.40 may not reimburse the costs for any of the following:

ATCP 50.86(3)(a) (a) Basins with a structural height of more than 25 feet or with a maximum storage capacity of more than 50 acre-feet.

ATCP 50.86(3)(b) (b) Basins whose failure may endanger human life, or real or personal property.

ATCP 50.86(4) (4) Design, construction, and maintenance. A cost-share grant under s. ATCP 50.40 may not reimburse the cost of installing a sediment basin unless all of the following conditions are met:

ATCP 50.86(4)(a) (a) Filter strips or buffers are used to filter any discharge from the sediment basin.

ATCP 50.86(4)(b) (b) The sediment basin complies with all of the following that apply:

ATCP 50.86(4)(b)1. 1. NRCS conservation practice standard 342 critical area planting (January, 2018).

ATCP 50.86(4)(b)2. 2. NRCS conservation practice standard 350 sediment basin (August, 2016).

ATCP 50.86(4)(b)3. 3. NRCS conservation practice standard 634 waste transfer (November, 2022).

ATCP 50.86(4)(b)4. 4. NRCS conservation practice standard 382 fence (January, 2014).

ATCP 50.86(4)(b)5. 5. NRCS conservation practice standard 635 vegetated treatment area (September, 2016).

ATCP 50.86(4)(b)6. 6. NRCS conservation practice standard 561 heavy use area protection (November, 2022).

ATCP 50.86(4)(b)7. 7. NRCS conservation practice standard 620 underground outlet (June, 2021).

ATCP 50.86(4)(b)8. 8. Wisconsin DNR conservation practice standard 1001, wet detention basin (October, 2007).

ATCP 50.86 Note Note: Copies of the DNR conservation practice standard 1001 are on file with the department and the legislative reference bureau. Copies may be obtained by visiting the DNR website at: http://dnr.wi.gov/topic/stormwater/standards/index.html.

ATCP 50.86(4)(b)9. 9. NRCS conservation practice standard 632 waste separation facility (November, 2022).

ATCP 50.86(4)(c) (c) The landowner agrees to maintain the sediment basin for 10 years unless farming operations on the affected land are discontinued.

ATCP 50.86 History History: CR 01-090: cr. Register September 2002 No. 561, eff. 10-1-02; CR 08-075: am. (4) (b) 1. to 6. and 8. Register April 2009 No. 640, eff. 5-1-09; CR 13-016: am. (4) (b) 1. to 8. Register February 2014 No. 698, eff. 5-1-14; CR 14-047: am. (4) (b) 2. to 4., 6., 7. Register May 2015 No. 713, eff. 6-1-15; CR 16-012: am. (4) (b) 5., 6. Register August 2016 No. 728, eff. 9-1-16; CR 16-083: am.(4) (b) 1., 2. Register January 2018 No. 745, eff. 2-1-18; CR 23-024: am. (4) (b) 1. to 7., cr. (4) (b) 9. Register May 2024 No. 821, eff. 6-1-24; correction in (4) (b) 1. made under s. 13.92 (4) (b) 1., Stats., Register May 2024 No. 821.

ATCP 50.87 ATCP 50.87 Sinkhole treatment.

ATCP 50.87(1) (1) Definition. In this section, “sinkhole treatment” means modifying a sinkhole, or the area around a sinkhole, to reduce erosion, prevent expansion of the hole, and reduce pollution of water resources. Modifications may include the diversion of runoff around a sinkhole, or the alteration of a sinkhole by excavation, cleanout, filter treatment, sealing, or refilling.

ATCP 50.87(2) (2) Eligible costs. A cost-share grant under s. ATCP 50.40 may reimburse any of the following costs related to sinkhole treatment:

ATCP 50.87(2)(a) (a) Costs for the design and construction of a grassed waterway or diversion to direct surface runoff around a sinkhole.

ATCP 50.87(2)(b) (b) Costs for the design and construction of a grassed waterway or diversion to direct surface runoff around a geologic depression to prevent the formation of a sinkhole.

ATCP 50.87(2)(c) (c) Costs for the design and construction of a modification to a sinkhole for the purpose of protecting groundwater resources from contamination.

ATCP 50.87(3) (3) Ineligible costs. A cost-share grant under s. ATCP 50.40 may not reimburse costs for any system, component, or practice that is not needed to correct an identified water pollution hazard.

ATCP 50.87(4) (4) Design, construction, and maintenance. A cost-share grant under s. ATCP 50.40 may not reimburse any costs related to sinkhole treatment unless all of the following conditions are met:

ATCP 50.87(4)(a) (a) The treatment complies with all of the following that apply:

ATCP 50.87(4)(a)1. 1. NRCS conservation practice standard 527 sinkhole treatment (September, 2021).

ATCP 50.87(4)(a)2. 2. NRCS conservation practice standard 362 diversion (August, 2016).

ATCP 50.87(4)(a)3. 3. NRCS conservation practice standard 412 grassed waterway (August, 2021).

ATCP 50.87(4)(b) (b) The landowner agrees to maintain the sinkhole treatment for 10 years unless farming operations on the affected land are discontinued.

ATCP 50.87 History History: CR 01-090: cr. Register September 2002 No. 561, eff. 10-1-02; CR 08-075: am. (4) (a) 2. and 3. Register April 2009 No. 640, eff. 5-1-09; CR 13-016: am. (4) (a) 1. to 3. Register February 2014 No. 698, eff. 5-1-14; CR14-047: am. (4) (a) 1. Register May 2015 No. 713, eff. 6-1-15; CR 16-012: am. (4) (a) 3. Register August 2016 No. 728, eff. 9-1-16; CR 16-083: am. (4) (a) 1. to 3. Register January 2018 No. 745, eff. 2-1-18; CR 23-024: am. (4) (a) 1. to 3. Register May 2024 No. 821, eff. 6-1-24.

ATCP 50.88 ATCP 50.88 Streambank or shoreline protection.

ATCP 50.88(1) (1) Definition. In this section, “streambank or shoreline protection” means waterbody-specific treatments used to stabilize and protect the eroding banks of streams or constructed channels, and shorelines of lakes, reservoirs, or estuaries. The practice is designed and installed to provide water quality benefits or control soil erosion including degradation from livestock and may protect fish habitat as an incidental benefit. Streambank or shoreline protection may include any of the following components:

ATCP 50.88(1)(a) (a) Critical area stabilization under s. ATCP 50.69.

ATCP 50.88(1)(b) (b) Diversions under s. ATCP 50.70.

ATCP 50.88(1)(c) (c) Grade stabilization under s. ATCP 50.73.

ATCP 50.88(1)(cg) (cg) Livestock fencing under s. ATCP 50.75.

ATCP 50.88(1)(cr) (cr) Livestock watering facilities under s. ATCP 50.76.

ATCP 50.88(1)(d) (d) Riparian buffers under s. ATCP 50.83.

ATCP 50.88(1)(e) (e) Roof runoff systems under s. ATCP 50.85.

ATCP 50.88(1)(em) (em) Stream crossing under s. ATCP 50.885.

ATCP 50.88(1)(f) (f) Subsurface drain under s. ATCP 50.90.

ATCP 50.88(1)(g) (g) Underground outlet under s. ATCP 50.92.

ATCP 50.88(1)(h) (h) Wetland development or restoration under s. ATCP 50.98.

ATCP 50.88(2) (2) Eligible costs. A cost-share grant under s. ATCP 50.40 may reimburse any of the following costs related to streambank or shoreline protection:

ATCP 50.88(2)(a) (a) Costs to install new soil bioengineering and structural treatments including rock riprap. Wood chunks, unsorted demolition material, brick, plaster, blacktop, and other materials that may produce leachates may not be used as riprap. A cost-share grant may reimburse costs for rock and timber riprap or lunkers used to establish fish habitat, in combination with the restoration of a riparian buffer and as part of a streambank or shoreline protection scheme, provided that reimbursement for fish habitat does not exceed 25% of the cost-share grant.

ATCP 50.88(2)(b) (b) Costs to shape streambanks or shorelines before installing protective plantings or structures.

ATCP 50.88(2)(c) (c) Costs to establish permanent vegetative cover, or to provide temporary cover until permanent cover is established. This may include costs for mulch, fertilizer, and other necessary materials.

ATCP 50.88(2m) (2m) Ineligible costs. Except for violations of this chapter or ch. NR 151, a cost-share grant under s. ATCP 50.40 may not reimburse costs related to mitigation or correction of a violation of state or local laws.

ATCP 50.88(3) (3) Design, construction, and maintenance. A cost-share grant under s. ATCP 50.40 may not reimburse costs for streambank or shoreline protection unless all of the following conditions are met:

ATCP 50.88(3)(a) (a) The streambank or shoreline protection complies with all of the following that apply:

ATCP 50.88(3)(a)1. 1. NRCS conservation practice standard 342 critical area planting (January, 2018).

ATCP 50.88(3)(a)2. 2. NRCS conservation practice standard 382 fence (January, 2014).

ATCP 50.88(3)(a)3. 3. NRCS conservation practice standard 580 streambank and shoreline protection (September, 2021).

ATCP 50.88(3)(a)4. 4. NRCS conservation practice standard 612 tree/shrub establishment (January, 2018).

ATCP 50.88(3)(a)5. 5. NRCS conservation practice standard 561 heavy use area protection (November, 2022).

ATCP 50.88(3)(a)6. 6. NRCS conservation practice standard 326 clearing and snagging (June, 2016).

ATCP 50.88(3)(a)7. 7. NRCS conservation practice standard 395 stream habitat improvement and management (September, 2021).

ATCP 50.88(3)(a)8. 8. NRCS conservation practice standard 582 open channel (September, 2021).

ATCP 50.88(3)(a)9. 9. NRCS conservation practice standard 584 channel bed stabilization (September, 2021).

ATCP 50.88(3)(b) (b) Cost-share recipients shall obtain all required DNR permits before installing any practices. The department may require documentation that permits have been obtained before it makes reimbursements under this chapter.

ATCP 50.88(3)(c) (c) The landowner agrees to maintain the streambank or shoreline protection for 10 years unless the practice is no longer required to prevent the soil and water resource problem for which the practice was installed.

ATCP 50.88 History History: CR 01-090: cr. Register September 2002 No. 561, eff. 10-1-02; CR 08-075: am. (3) (a) 1. to 5. Register April 2009 No. 640, eff. 5-1-09; CR 13-016: am. (title), renum. (1) to (1) (intro.), cr. (1) (a) to (h), am. (2) (intro.), r. (2) (a), renum. (2) (b) to (2) (a) and am., renum. (2) (c) to (2) (b), r. (2) (d), renum. (2) (e) to (2) (c), r. (2) (f), cr. (2m), am. (3) (a) 1. to 5., r. and recr. (3) (b), am. (3) (c) Register February 2014 No. 698, eff. 5-1-14; CR 14-047: am. (3) (a) 2., 3., 5. Register May 2015 No. 713, eff. 6-1-15; CR 16-102: am. (3) (a) 5. Register August 2016 No. 728, eff. 9-1-16; CR 16-083: am. (3) (a) 1. Register January 2018 No. 745, eff. 2-1-18; CR 23-024: cr. (1) (cg), (cr), (em), am. (2) (a), (3) (a) 1. to 5., cr. (3) (a) 6. to 9. Register May 2024 No. 821, eff. 6-1-24.

ATCP 50.882 ATCP 50.882 Stream restoration.

ATCP 50.882(1) (1) Definition. In this section “stream restoration” means applying combinations of practices designed to the extent possible to restore or repair healthy channel conditions, connections, and functions adjacent to or upstream from erosion-prone agricultural lands or to address other resource concerns. These practices shall be installed to slow the flow of runoff, reduce flood peaks, restore surface and groundwater interactions, improve water quality, or to increase soil retention, groundwater infiltration, base flow, upper watershed storage, and flood resilience. These practices can also be used to reduce or repair erosion, maintain water supply, maintain sediment transport continuity, restore natural drainage, and stabilize banks. Stream restoration practices may improve fish and wildlife habitat as an incidental benefit. Stream restoration may include any of the following components:

ATCP 50.882(1)(a) (a) Hydrologic restoration under s. ATCP 50.74.

ATCP 50.882(1)(b) (b) Streambank or shoreline protection under s. ATCP 50.88.

ATCP 50.882(1)(c) (c) Stream crossing under s. ATCP 50.885.

ATCP 50.882(1)(d) (d) Waterway systems under s. ATCP 50.96.

ATCP 50.882(1)(e) (e) Wetland development or restoration under s. ATCP 50.98.

ATCP 50.882(2) (2) Eligible costs. A cost-share grant under s. ATCP 50.40 may reimburse any of the following costs related to stream restoration:

ATCP 50.882(2)(a) (a) Costs for system components under subs. (1) and (4) that are eligible for reimbursement under this subchapter.

ATCP 50.882(2)(b) (b) Costs to establish permanent vegetative cover, or to provide temporary cover pending the establishment of permanent cover. This may include costs for mulch, fertilizer, seed, and other necessary materials.

ATCP 50.882(2)(c) (c) Costs to purchase and install permanent fencing around the critical area.

ATCP 50.882(2)(d) (d) Preparatory shaping and smoothing operations.

ATCP 50.882(2)(e) (e) Costs for site preparation, grading, shaping and filling.

ATCP 50.882(3) (3) Ineligible costs. Except for violations of this chapter or ch. NR 151, a cost-share grant under s. ATCP 50.40 may not reimburse costs related to mitigation or correction of a violation of state or local law.

ATCP 50.882(4) (4) Design, construction, and maintenance standards. A cost-share grant under s. ATCP 50.40 may not reimburse stream restoration costs unless all of the following conditions are met:

ATCP 50.882(4)(a) (a) The stream restoration complies with all of the following that apply:

ATCP 50.882(4)(a)1. 1. NRCS conservation practice standard 315 herbaceous weed treatment (June, 2016).

ATCP 50.882(4)(a)2. 2. NRCS conservation practice standard 327 conservation cover (January, 2013).

ATCP 50.882(4)(a)3. 3. NRCS conservation practice standard 342 critical area planting (January, 2018).

ATCP 50.882(4)(a)4. 4. NRCS conservation practice standard 356 dike (September, 2016).