01-27-2003 Council Packet - Laserfiche WebLink

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^» «02-2854 1973 Fagcrncss Point Road January 16,2003 Page 2 4.Public Services Director will review the sidewalk/steps near the gar4g^ to determine whether their encroachment within the right-of-way of Fagemess Point Road is a problem. (Public Service Director has concluded the steps are npl an issue). 5.It appears that the issue of the location of the lot line between the Manley and Ekiof accretions will be resolved outside the purview of the City Council. Review of Proposed Boulder Wall Landscaping Plan The initial topographical survey and boulder wall plans were received on November 12. The City Engineer’s initial comments were attached as Exhibit L of the November 16 memo. Prior to the December Council meeting, 3 Optional plans were submitted. Each Option includes a cross section sheet and a plan view. Each Option involves the use of boulder retaining walls to retain the lakeshorc bank, with variations primarily in the amount of fill replaced where the ground was removed by applicant or his predecessors to enhance the walkout situation. Each Option incorporates a stairway system to provide continued access to the lake. Each Option contains a “first flush” drainage system (a rock- filled trench) behind the top of the boulder wall to allow retention and natural filtration of nutrients and toxins at the onset of a rain event. This will have a positive effect on the quality of runoff reaching the lake. Option 1 creates a half-oval depressed area at elevation 937.5 (just below the current 938.0 ’ walkout door level) next to the house, then re-establishes the pre-existing walkout elevation (939.5 ’) with a ‘step-up ’ wall 3-6’ lakeward from the house. The grade then slopes to an elevation of 938.5 ’ at the top of the shoreline boulder wall. An underground drainpipe is proposed to remove runoff from the depression area next to the house, outictting just below the crest of the shoreline boulder wall. Option 2 omits the depression area, but establishes a slope starting at the walkout door elevation (938.0 ’) dropping to 937.0 ’ at the shoreline boulder wall. This avoids the depression next to the house but docs not re-establish the pre-existing grade levels. Option 3 also omits the depression, but establishes a slightly flatter lawn slope than Options 1 or 2, and somewhat changes the shape and orientation of the lakeshore stairway. Like Option 2, Option 3 docs not re-establish the lakeshore yard elevations that existed previously. Option 3 docs result in slightly more removal of the lakeshore bank as it seeks to sofien the linear impact of boulder walls. However, the elevation views as seen from the lake suggest that once vegetation is established, the differences in visual impacts between the 3 Options is relatively minimal.