NR 120.14(12)(a)(a)
Description. Critical area stabilization is the planting of suitable trees, shrubs and other vegetation appropriate for controlling and stabilizing sloped lands which are producing nonpoint source pollutants and lands which drain into bedrock crevices, openings and sinkholes. This practice shall be implemented using one or more of the standards in
par. (c).
NR 120.14(12)(b)
(b)
Conditions. Trees may not be sold during the operation and maintenance period.
NR 120.14(12)(c)
(c)
Standards. Standards from the NRCS field office technical guide are as follows:
NR 120.14(13)(a)(a)
Description. A grade stabilization structure is a structure used to reduce the grade in a drainageway or channel to protect the channel from erosion or to prevent the formation or advance of gullies. This practice shall be implemented using one or more of the standards in
par. (c).
NR 120.14(13)(b)1.a.
a. Channel linings, chutes, drop spillways and pipe drops of less than 15 feet in height to discharge excess water.
NR 120.14(13)(b)1.b.
b. Detention or retention structures, such as erosion control dams, desilting reservoirs, sediment basins, debris basins or similar structures of less than 15 feet in structural height and with maximum storage capacities of less than 15 acre-feet.
NR 120.14(13)(b)2.
2. Cost-sharing may be provided for structures with embankments of 15 to 25 feet in structural height or with maximum storage capacities of 15 to 50 acre-feet if the department makes a determination in writing that all of the following apply:
NR 120.14(13)(b)2.a.
a. Control of the site is needed to achieve the water quality objectives specified in an approved priority watershed or lake plan or in the approved priority watershed plan, priority lake plan or project grant application.
NR 120.14(13)(b)2.c.
c. Failure of the structure would have minimum potential to endanger life or real or personal property.
NR 120.14(13)(b)3.
3. Cost-sharing may not be authorized for any grade stabilization structure on a navigable stream or stream classified as supporting a fishery.
NR 120.14(13)(c)
(c)
Standards. Standards from the NRCS field office technical guide are as follows:
NR 120.14(14)(a)(a)
Description. Agricultural sediment basins are permanent basins designed and constructed to reduce the transport of pollutants to surface waters and wetlands of sediment eroded from critical agricultural fields. This practice shall be implemented using one or more of the standards in
par. (c).
NR 120.14(14)(b)1.1. Cost-sharing may be provided for the sediment basin including embankments, principal and emergency spillway structures, including anti-seep collars, dewatering outlet and outlet protection.
NR 120.14(14)(b)2.a.
a. Basins having embankments exceeding 25 feet in structural height or with maximum storage capacity of more than 50 acre-feet.
NR 120.14(14)(b)3.
3. Sediment basins with embankments of 15 to 25 feet in structural height or with maximum storage capacities of 15 to 50 acre-feet in volume may be cost-shared only when approved by the department, in writing, prior to construction. For the department to authorize cost-sharing, it shall make the following findings:
NR 120.14(14)(b)3.a.
a. Control of the site is needed to achieve the water quality objectives specified in the approved priority watershed plan, priority lake plan or project grant application.
NR 120.14(14)(b)3.c.
c. Failure of the structure would have minimum potential to endanger life or real or personal property.
NR 120.14(14)(c)
(c)
Standards. The sediment basin shall be designed consistent with standards for construction site sediment basins in the
Wisconsin Construction Site Best Management Practice Handbook, WDNR Pub. WR-222, November 2001 Revision, the Wisconsin department of natural resources conservation practice standard 1001 for wet detention basins, June 1999 and the NRCS field office technical standards from the NRCS field office technical guide as follows:
NR 120.14 Note
Note: Copies of this publication may be inspected at the offices of the department, 101 S. Webster Street, Madison; the Secretary of State, 30 W. Mifflin, Madison; and the Legislative Reference Bureau, One E. Main Street, Suite 200, Madison. Copies of the NRCS technical standards may also be inspected at each county land conservation department office and at the state NRCS office, 6515 Watts Road, Madison.
NR 120.14(15)(a)(a)
Description. Shoreline or streambank stabilization is the stabilization and protection of the banks of streams and lakes against erosion and the protection of fish habitat and water quality from livestock access. This practice shall be implemented using one or more of the standards in
par. (c).
NR 120.14(15)(b)1.1. The cost-share recipient is responsible for obtaining all permits for the installation of the practice.
NR 120.14(15)(b)2.a.
a. For planting trees if approved by a county's land conservation department in consultation with the department fish manager.
NR 120.14(15)(b)2.b.
b. For water pumps and other measures required to eliminate livestock access to water.
NR 120.14(15)(b)2.c.
c. To install livestock and machinery crossings that will minimize disturbance of the stream channel and banks.
NR 120.14(15)(b)2.d.
d. For the design and placement of practices such as shaping and placement of vegetation, riprap or structures which improve fishery habitat, or other materials on banks and shores identified in an approved priority watershed plan, priority lake plan or the project grant application, or in areas where streambank repair is the least costly alternative. Written departmental approval is required for the stabilization of banks with structural heights higher than 15 feet.
NR 120.14 Note
Note: A permit may be required under ch.
30, Stats., when installing this best management practice. For more information, please contact the Bureau of Fisheries Management and Habitat Protection, P.O. Box 7921, Madison, Wisconsin 53707.
NR 120.14(15)(b)3.
3. Cost-sharing is not authorized for wood chunks, unsorted demolition material, brick, plaster, blacktop and any other material that could produce leachates or would violate provisions of statutes or administrative codes for use as riprap.
NR 120.14(15)(c)2.a.
a. U.S. department of transportation hydraulic engineering Circulars numbers 11, Design of Riprap Revetment, Pub. No. FH WA-IP-89-016, March, 1989 and 15, Design of Roadside Channels with Flexible Linings, Pub. No. FH WA-IP-87-7, April, 1998, which are incorporated by reference for this chapter.
NR 120.14(15)(c)2.b.
b. American fisheries society's stream obstruction removal guidelines, which are incorporated by reference for this chapter.
NR 120.14(15)(c)2.c.
c. U.S. department of agriculture's Stream Habitat Improvement Handbook, publication R8-TP-16, June 1992, which is incorporated by reference for this chapter.
NR 120.14(15)(c)2.d.
d. Natural Resources Conservation Service Engineering Field Handbook, Soil Bioengineering for Upland Slope Protection and Erosion Reduction, Pub. 210-EFH, October, 1992, which is incorporated by reference for this chapter.
