05-23-1988 - Agenda Packet City Council - regular meeting

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'`tritwifHG G:AY 2 3 19&9 To: Mayor Grabek and City Council Members City Administrator Mark Bernhardson From: Jeanne A. Mabusth, Building & Zoning Administrator Date: May 19, 1988 Subject: #1222 Jan Waye,1885 Concordia Street - After the Fact Conditional Use Permit - Resolution Zoning Distrct - LR-lC Pertinent Ordiances - Section 10.03 Subdivision 19 - Conditional Use Permit required for filling, reclaiming of lands, changing the shoreline elevations. Section 10.55 Subdivision 8 - Variance is required to alter etc. land within 0-75 feet of the lakeshore List of Exhibits Exhibit A - Application Exhibit B - Property Owners List Exhibit C - Plat Map Exhibit D - Reep Letter of 10/20/87 Exhibit E - Cook Letter of 11/10/87 Exhibit F Cross Profile of Shoreline Restoration Exhibit G - Cross Profile of Lakeshore Bank Exhibit H - Plan of Shoreline and Banks Exhibit I - Planr{ng Commission Minutes 11/16/88 Exhibit J - Clifford Peep Letter of 12/10/87 Exhibit K - James Robin's Letter of 12/3/87 Exhibit L - Robin's Sketch Plan Exhibit M - Minnehaha Creek Watershed District Permit Exhibit N - Staff's Sketch Brief Review Of Application The property substained severe erosion of the lakeshore banks as a result of the storm of July 23, 1988. The applicant worked with their contractor to resolve the erosion problem. Unfortunately, the City was not advised of this restoration work until after the project was completed. The City never had any input nor the opportunity to advise applicant of City's policy to encougage natural structures or landforms along the shoreline. One may argue the point what is more natural than the use of rock and boulders within the shorline area. It is the extent and intensity of use of the boulders through out the entire shoreline that is an issue. Staff has little experience with the method of bank restoration used by applicant. We have seen the use of boulder walls within the last two years throughout the City. As with many of the boulder walls reviewed and observed by staff, it is difficult to find any engineer that would ceritify the sturctural stability of this type of construction to prevent future erosion; but then again, this can be said for any of the retaining walls that have been used to restore banks damaged by servere erosion. The question for this review has been can vegetation be restored to the banks with this type of installation?