03-28-1988 - Agenda Packet City Council - regular meeting

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Zoning File #1223 March 8, 1988 Page 6 of 8 H. This option has not been previously discussed at length, because it involves a severe reduction of the applicant's useable lakeshore yard area, and would have a potential negative impact because it would not blend into the adjacent properties 'well. The option involves -. total regrading of the slope to meet the 2:1 desired slope, and we .d inv -' removal of a large portion of the vard. It would seem that this approach would h;-. a severe impact on the practical use of the applicant's property and would not be in character with the neighboring properties, even though it technically accomplishes the desired stable slope. The long- term lake quality effects would not be significantly better or worse than most of the other methods but note that the method would reduce the flat absorption area of lawn to a degre,.. I. This is another option t.nat has not been propose,:: and suggests that a retaining wall loc.: I-ed at `he base of the slope would allow the filling behind it to appr..ximate thr iginal ,rule. Similar walls were original', in place on the lakeshore bank in question. Stability of such a method is questionable given t .at there would be a fF-rly large bulk of t:istur:.e:i soils placed above it. The visual impact from the lake voul,� again da:per - ,.ri the height of the exposed face and of the vegetation able :-) Lt.- tsta'+1;shed as screening. In attempting to assign a `^-at i_ ve value to the concerns of short- term and long-term impact cn lak , . i ( tar q� 3l ity as we l l as the permanent visual impact of the various options, staff askel these questions: A) Does the method result in a s;gnificant visible change in the topography and character of the lakeshore bank relative to the neighboring properties? e) Is there a significan,: detrimental short term impact on lake water quality during the time the excavation is underway and during the period of time prior to reestablishment of revegetation on the site? I- •'-.is short term potential impact controllable with erosion control so as to minimize the short term impact? C) Does the method provide adequato stability for the bank on a lonq term basis, so 'tiat future occurrences of major erosion will be minimized cr eliminated?