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� <br /> #OS-3344 Big Island Dock System <br /> February 13,2008 <br /> Page 3 <br /> . Additional Information Needed <br /> Survey work to confirm actual site-specific topography for each of the four pad locations <br /> has not yet been done. Without the topographic information it is unclear whether filling � <br /> within the flood fringe is required. If so,the MCWD likely will require a mitigation plan. <br /> The City Engineer has been asked to provide accurate 1-foot contours of the immediate <br /> " area surrounding the pads and walkways to allow a determination of whether the pads <br /> and walkways can be located to avoid any filling in the flood fringe. <br /> The plans presented with this application are staff's graphic renderings of verbal <br /> descriptions provided by members of the Big Island Park Committee, and do not <br /> represent an engineered design. <br /> Staff has contacted and is awaiting word from the State Building Code division as to <br /> specific ADA standards for accessibility to which this dock system is subject. <br /> Stormwater Management Options <br /> The pads and sidewalks constituting 1400 s.f. of hardcover will be near or abutting the <br /> shoreline, leaving little opportunity for stormwater infiltration between the hardcover and <br /> the lake. However, the pads and walks could be slightly tilted towards the inland side <br /> and a filtration swale be established behind them, planted with vegetation to allow for <br /> . filtration as well as soil absorption. - <br /> t <br /> a Variances Required <br /> The following variances are required for this project: <br /> 1) _ A variance to Section 78-1282 to allow a"landing"to be constructed in excess of <br /> the 32 s.f. maximum area normally allowed. Each proposed landing is 200 s.f. in <br /> area, in order to accommodate groups of persons as they disembark, as well as to <br /> provide for ADA accommodations. <br /> 2) A variance to Section 78-1286(b) to allow grading and filling of more than 10 <br /> cubic yards within 75' of the shoreline. The amount of earth movement and <br /> subsequent sand base fill associated with each pad could be up to 10-15 yards, for <br /> a potential total of 40-60 cubic yards. <br /> 3) A variance to Section 78-1288(a) to allow hardcover of approximately 1400 s.f. <br /> (0.25%) within the 0-75' lakeshore setback zone where no hardcover is normally <br /> allowed. <br /> In reviewing the pertinent code sections, it appears that the nature of construction <br /> proposed would not require a conditional use permit if no filling of the floodway occurs. <br />