NR 118.07(6)(b)(b) The structural erosion control measure is constructed of natural materials and is made as visually inconspicuous as possible. NR 118.07(6)(c)(c) The person seeking to construct the structural erosion control measure submits a detailed construction plan, an erosion control plan and a vegetative management plan, showing how the structural erosion control measure will be constructed, what land disturbing activities will take place, what, if any, vegetation will be removed, and how new native, vegetation will be re-established. Construction may not proceed until the local zoning authority has approved the plans. NR 118.07(7)(7) Stairways. A conditional use permit may be issued for a stairway if all of the following conditions are met: NR 118.07(7)(a)(a) The stairway is required to provide pedestrian access to the river because of steep, rocky, unstable or wet site conditions. NR 118.07(7)(b)(b) The tread width of the stairway may not exceed 48 inches. NR 118.07(7)(c)(c) Landings are located at a vertical interval of not less than 20 feet and may not exceed 40 square feet in area. NR 118.07(7)(d)(d) Hand rails may be permitted in conjunction with stairways. NR 118.07(7)(f)(f) Stairways, handrails and landings shall be anchored and supported above grade with pilings or footings. NR 118.07(7)(g)(g) Stairways shall be constructed of unfinished wood or stone, or shall be painted or stained with earth-tone materials. NR 118.07(7)(h)(h) Stairways shall be visually inconspicuous and shall be located in the most visually inconspicuous portion of the lot. NR 118.07(7)(i)(i) Native vegetation plantings shall be used to form a vegetative canopy to screen the stairway from the river. NR 118.07(7)(j)(j) Existing vegetation may be removed within one foot of either side of the stairway route and up to 8 feet above the stairway floor. NR 118.07(7)(k)(k) Only one stairway may be permitted on a lot that abuts the Lower St. Croix river. NR 118.07(8)(8) Lift standards. A conditional use permit may be issued for a lift if all of the following requirements are met: NR 118.07(8)(a)(a) The lift is required to provide pedestrian access to the river because of steep, rocky, unstable or wet site conditions. NR 118.07(8)(d)(d) All visible parts of the lift shall be painted or finished in earth-tone, non-reflective materials and shall be visually inconspicuous. NR 118.07(8)(e)(e) Lifts and their transporting device or power source shall be visually inconspicuous and shall be located in the most visually inconspicuous portion of the lot. NR 118.07(8)(f)(f) Native vegetation plantings shall be used to form a vegetative canopy to screen the lift from the river. NR 118.07(8)(g)(g) Existing vegetation may be removed within one foot on either side of the lift route and up to 8 feet above the lift floor. NR 118.07(8)(h)(h) Only one lift may be permitted on a lot that abuts the Lower St. Croix river. NR 118.07(9)(9) Public roads and private roads serving 2 or more properties or single-family residences. A conditional use permit may be issued for the construction, reconstruction or right-of-way maintenance for public roads and private roads serving 2 or more properties or single-family residences if all of the following conditions are met: NR 118.07(9)(a)(a) No new road may be constructed in slope preservation zones, in an area 40 feet landward of blufflines, within 200 feet of the river, within 100 feet of tributary watercourses or in wetlands. NR 118.07(9)(b)(b) Route design and construction or reconstruction shall minimize visual impacts by using terrain features to blend the road into the landscape, avoiding cuts and fills as much as feasible. NR 118.07(9)(c)(c) New roads shall be visually inconspicuous. Reconstruction of existing roads shall be performed in a manner that does not increase visibility of the road from the river. NR 118.07(9)(d)(d) Cutting or clearing vegetation for road right-of-way maintenance shall be conducted in accordance with the following requirements: NR 118.07(9)(d)1.1. Vegetation shall be managed to allow an understory layer to remain in place to prevent erosion and allow succession. Vegetation may not be disturbed in such a way that there would be reduced quality or diversity of the plant community or increased potential for erosion.