Ord 319 Retaining Walls - Laserfiche WebLink

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b. A replacement retaining wall, including a change in material, may be permitted within a definedthe bluff, bluff setback, or shore setback zone when all of the following conditions are met: 1. The wall is under four feet in height, and in the same location;and 2. The existing wall shows signs of failure. 3. The wall is screened by deep-rooted, native vegetation so as not to be visible from the waterbody in year-round conditions. c. A-new retaining wall,or an r, i :zcme„texpanded replacement walls four feet in height or greater,constructed within a defined bluffcand bluff setback,or shore setback zone;and/or a replacement wall four feet in height or gr ater;and/or any new walls shall require a conditional use permit.All wNcw walls and rcplaccmcnt walls greater than four feet in height must meet the following conditions.The wall must be: 1. The walls are used only Designed to correct an existing erosion or slope stability established erosion problem documented by a licensed professional engineer,and not for aesthetic reasons;and 2. The walls must be screened by deep-rooted, native vegetation so as not to be visible from the waterbody in year-round conditions:Suitable given the demonstrated need;and 3. The number, height,and length of the walls are the minimum necessary to control the erosion or slope stability problem and are not taller than 4 feet or longer than 10 feet, unless the licensed professional engineer determines that a larger wall is necessary to correct the documented erosion or slope stability problem Designed by a registered engineer or landscape architect, depending on project scope;and 4. A landscape plan is required to identify vegetative removals in the location of the new/replacement walls to ensure removals are limited to the minimum necessary to support the installation of the walls,subject to-Sec. 6.12.6300. Replacement plantings must consist of deep rooted native vegetative to provide necessary support for the slope. d. Designed to be the minimum size necessary to control the erosion problem.lf the project includes work at or below the OHWL or within WCA jurisdictional wetland,that portion of the project must be approved and/or permitted by the appropriate governing agency. (6) Average lakeshore setback. No principal or accessory building shall be located closer to the ordinary high-water line(OHWL) on a lakeshore lot than the average distance from the shoreline of existing principal buildings on adjacent lots;this does not apply to patios and other accessory structures less than 42 inches above existing grade and/or stairways, lifts, landings, lockboxes,flagpoles and pump houses. Further,the average lakeshore setback shall apply only to classified lakes and shall not apply to tributaries.The average lakeshore setback line shall be a straight line connecting the most lakeward protrusions of the principal buildings on the immediately adjacent lakeshore lots. a. In situations where improvement is proposed on a lot adjacent to a vacant lot or right-of-way, the average lake shore setback shall be equivalent to the setback of the most lakeward protrusion of the principal building on the immediately adjacent improved lakeshore lot. b. In situations where the average lake shore setback line bisects the principal building located on either adjacent lot,the next most adjacent lake side point of the bisected principal building shall be used for determining the average lakeshore setback. If the line continues to bisect the principal building,the next most lakeside point is to be used until the setback line does not bisect the principal building on an adjacent lot. Page 14 of 19