5.4. SR 06-05-2006 - Laserfiche WebLink

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DMSIOl~ 12. SHORELAND l'viANAGE1\1ENT* Page 17 of 21 .. 3. Open space shall include areas with physical characteristics unsuitable for development in their natural state, and areas containing significant historic sites or unplatted cemeteries. · 4. Open space may include outdoor recreational facilities for use by owners of the dwelling units or sites, or the public. 5. The shore impact zone, based on nonnal structure setbacks, shall be included as open space. At least 50 percent of tIle shore impact zone area of existing developments or at least 70 percent of the shore impact zone area of new developments shall be preserved in its natural or existing state. 6~ Open space shall not include commercial facilities or uses, but may contain water-oriented accessory structures or facilities.~ 7. The appearance of open space areas, including topography, vegetation, and allowable uses, shall be preserved by use of restrictive deed covenants, pennanent easements, public dedication and acceptance, or other equally effective and permanent means. 8. Open space may include subsurface sewage treatment systems if the use of the space is restricted to avoid adverse impacts on the systems. · c. Centralization and design of facilities and structures shall be done according to the following standards: 1. Residential planned unit developments shall be connected to publicly owned water supply and sewer systems, if available. On~site water supply and sewage treatment systems shall be centralized and designed and installed to meet or exceed applicable standards or rules of the state department of health and sections 30- 2022 and 30-2028. On-site sewage treatment systems shall be located on the most suitable areas of the development, and sufficient lawn area free of limiting factors shall be provided for a replacement soil treatment system for each sewage system. 2. Dwelling units or sites shall be clustered into one or more groups and located on suitable areas of the development. They shall be designed and located to meet or exceed the following dimensional standards for the relevant shoreland classification: setback from the ordinary high-water level, elevation above the surface water features, and maximum height. Setbacks from the ordinary high-water level shall be increased for developments with density increases4 Maximum density increases may only be allowed if structure setbacks from the ordinary high-water level are increased to at least 50 percent greater than the minimum setback, or the impact on the water body is reduced an equivalent amount through vegetative management, topography, or additional means acceptable to the city and the setback is at least 25 percent greater than the minimum setback:. 3. Shore recreation facilities, including but not limited to swimming areas, docks, and watercraft mooring areas and launching ramps, shall be centralized and located in areas suitable for them. Evaluation of suitability shall include consideration of land slope, water depth, vegetation, soils, depth to groundwater and bedrock, or other relevant factors. The number of spaces provided for continuous beaching, mooring, or docking of watercraft shall not exceed one for each allowable dwelling unit or site in thefirst tier. Launching ramp facilities, including a small dock for loading and unloading equipment, may be provided for use by occupants of dwelling units or sites located in other tiers. 4. Structures, parking areas, and other facilities shall be treated to reduce visibility as viewed from public waters and adjacent shorelands by vegetation, topography, increased setbacks, color, or other means acceptable to the city, assuming summer, leaf-on conditions. 5. Water-oriented accessory structures and facilities may be allowed if they meet or exceed the design standards contained in section 30-2022 and are centralized. 6. Accessory structures and facilities may be allowed if they meet or exceed the standards in subdivision IV of this division and are centralized. d. Erosion control and stormwater management for residential planned unit developments shall: 1. Be designed, and their construction managed, to minimize the likelihood of serious erosion occurring either during or after construction. This shall be accomplished by limiting the amount and length of time of bare ground exposure. Temporary ground covers, sediment entrapment facilities, vegetated buffer strips, or other appropriate techniques shall be used to minimize erosion impacts on surface water features. Erosion control plans approved by a soil and water conservation district may be required if project size and site physical characteristics warrant. 2. Be designed and constructed to effectively manage reasonably expected quantities and qualities of http://library4 .municode. com/mcclDoc View/13427 /1/66/84/96 5/9/2006