Agenda - Council - 08/10/2004 - Laserfiche WebLink

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(g) 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 (h) the shore impact zone, based on normal s~ructure setbacks, must be included as open space. For residential PUD's, 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 PUD's, at least 50 percent of the shore impact zone must be preserved in its natural state. 3. Erosion Control and Stormwater Management. management plans must be developed and the PUD must: Erosion control and stormwater (a) 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 (b) 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 PUD's 35 percent imper,~ious surface coverage may be allowed in the first tier of general .development lakes with an approved stormwater management plan and consistency with this section. 4. Centralization and Design of Facilities. Centralization and design of facilities and structm:es must be done according to the following standards: (a) plmmed unit developments must be connected to publicly owned water supply and sewer systems, if available. On-site water supply and sewage treatment sy.stems must be centralized and designed and installed to meet or exceed applicable standards or rules of the Mirmesota Department of Health and this section. 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; (b) 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: setback from the ordinary high water level, elevation above the surface water features, and maximum height. Setbacks from the ordinary high water level must be increased in accordance with this section for developments with density increases; 3t -221-