Agenda - Planning Commission - 01/07/2016

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1. At least 50 percent of the total project area must be preserved as open space; 2. Dwelling units or sites, road rights-of-way, or land covered by road surfaces, parking areas, or structures, except water -oriented accessory structures or facilities, are developed areas and shall not be included in the computation of minimum open space; 3. Open space must 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 dwelling units or sites, by guests staying in commercial dwelling units or sites, and by the general public; 5. Open space may include subsurface sewage treatment systems if the use of the space is restricted to avoid adverse impacts on the systems; 6. Open space must 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, must be preserved by use of restrictive deed covenants, permanent easements, public dedication and acceptance, or other equally effective and permanent means; and 8. The shore impact zone, based on normal structure setbacks, must be included as open space. For residential PUDs, at least 50 percent of the shore impact zone area of existing developments or at least 70 percent of the shore impact zone area of new developments must be preserved in its natural or existing state. For commercial PVDs, at least 50 percent of the shore impact zone must be preserved in its natural state. c. Erosion control and stormwater management. Erosion control and stormwater management plans must be developed and the PUD must: 1. Be designed, and the construction managed, to minimize the likelihood of serious erosion occurring either during or after construction. This must 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 must 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; and 2. Be designed and constructed to effectively manage reasonably expected quantities and qualities of stormwater runoff. Impervious surface coverage within any tier must not exceed 25 percent of the tier area, except that for commercial PUDs 35 percent impervious surface coverage may be allowed in the first tier of general development lakes with an approved stormwater management plan and consistency with this subdivision. d. Centralization and design of facilities. Centralization and design of facilities and structures must be done according to the following standards: 1. Planned unit developments must be connected to publicly owned water supply and sewer systems, if available. On-site water supply and sewage treatment systems must be centralized and designed and installed to meet or exceed applicable standards or rules of the state department of health and this subdivision. On-site sewage treatment systems must be located on the most suitable areas of the development, and sufficient lawn area free of limiting factors must be provided for a replacement soil treatment system for each sewage system; 2. Dwelling units or sites must be clustered into one or more groups and located on suitable areas of the development. They must be designed and located to meet or exceed the following dimensional standards for the relevant shoreland classification: Pi