03-11-1991 Council Packet - Laserfiche WebLink

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Zoning File #1493 & #1570 Page 4 Planning Commission requested that applicant meet with staff so that plans could be amended to reduce magnitude of retaining wall construction and to specifically address the areas of concern. Those areas were defined as an eroding bank adjacent to boathouse and erosion near stonewalk adjacent to southern lot line. The revised plan proposes retaining walls limited to two sections with one running approximately 45' parallel to the lake and continuing eastward along the access stairs* The second section will be placed along the south lot line at approximately a 3 to 3-1/2* height for 25+. The plan also shows the access stairs within the 0-75' and within the 75-250' setback area. The stairs will be reinstalled at a 3' minimum width. Review Exhibit L. The walls adjacent to the boathouse will be at approximately a 4 to 4-1/2' height. As for the upper wall along the southern lot line# Cook cautions that the wall inay channelize the water and erosion problems may result. Applicant should be placed on notice that he would be expected to maintain/repair this retaining wall in order to ensure against any negative impact on the lake. In Cook's report (Exhibit K-2), he asks that a typical section of the wall be strengthened by including a lower row of deadman offset from the top row at 8' on center. Applicant is required to provide erosion control fence between the work areas on the lake. Erosion control must be installed prior to any land alteration. Hardcover within the 0- 75* setback area will be increased 29 s.f. and 10 s.f. in the 75- 25(J* setback area as already noted above in the hardcover facts. Members unanimously approved the land alterations within the lakeshore protected area and 75-250' setback area as shown on Exhibit J based on the following findings: 1.Application proposes an overall reduction in hardcover within designated setback areas. 2.Proposed land alterations and installation of retaining walls will stabilize the banks and prevent further erosion. 3.The stability of an existing boathouse will be secured and erosion of lakeside banks minimized. Approval would be subject to the following conditions: 1.Applicant is placed on notice that the upper wall section may channelize water and create further erosion problems. Applicant is responsible for the repair of these areas in order to minimize erosion and protect quality of run-off into lake.