Agenda - Planning Commission - 04/27/2023

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1 1. Be designed,and the construction managed,to minimize the likelihood of serious erosion 2 occurring either during or after construction. This must be accomplished by limiting the 3 amount and length of time of bare ground exposure.Temporary ground covers,sediment 4 entrapment facilities, vegetated buffer strips, or other appropriate techniques must be 5 used to minimize erosion impacts on surface water features. Erosion control plans 6 approved by a soil and water conservation district may be required if project size and site 7 physical characteristics warrant; and 8 2. Be designed and constructed to effectively manage reasonably expected quantities and 9 qualities of stormwater runoff. Impervious surface coverage within any tier must not 10 exceed 25 percent of the tier area, except that for commercial PUDs 35 percent 11 impervious surface coverage may be allowed in the first tier of general development lakes 12 with an approved stormwater management plan and consistency with this subdivision. 13 d. Centralization and design of facilities. Centralization and design of facilities and structures 14 must be done according to the following standards: 15 1. Planned unit developments must be connected to publicly owned water supply and sewer 16 systems, if available. On-site water supply and sewage treatment systems must be 17 centralized and designed and installed to meet or exceed applicable standards or rules of 18 the state department of health and this subdivision. On-site sewage treatment systems 19 must be located on the most suitable areas of the development, and sufficient lawn area 20 free of limiting factors must be provided for a replacement soil treatment system for each 21 sewage system; 22 2. Dwelling units or sites must be clustered into one or more groups and located on suitable 23 areas of the development. They must be designed and located to meet or exceed the 24 following dimensional standards for the relevant shoreland classification: setback from 25 the ordinary high water level, elevation above the surface water features, and maximum 26 height.Setbacks from the ordinary high water level must be increased in accordance with 27 this subdivision for developments with density increases; 28 3. Shore recreation facilities, including but not limited to swimming areas, docks, and 29 watercraft mooring areas and launching ramps, must be centralized and located in areas 30 suitable for them. Evaluation of suitability must include consideration of land slope,water 31 depth, vegetation, soils, depth to groundwater and bedrock, or other relevant factors. 32 The number of spaces provided for continuous beaching, mooring, or docking of 33 watercraft must not exceed one for each allowable dwelling unit or site in the first tier 34 (notwithstanding existing mooring sites in an existing commercially used harbor). 35 Launching ramp facilities, including a small dock for loading and unloading equipment, 36 may be provided for use by occupants of dwelling units or sites located in other tiers; 37 4. Structures, parking areas, and other facilities must be treated to reduce visibility as 38 viewed from public waters and adjacent shorelands by vegetation,topography, increased 39 setbacks, color, or other means acceptable to the local unit of government, assuming 40 summer, leaf-on conditions. Vegetative and topographic screening must be preserved, if 41 existing, or may be required to be provided; 42 5. Accessory structures and facilities, except water oriented accessory structures, must 43 meet the required principal structure setback and must be centralized; and 44 6. Water-oriented accessory structures and facilities may be allowed if they meet or exceed 45 design standards contained in this subdivision and are centralized. 46 (5) Conversions. Local governments may allow existing resorts or other land uses and facilities to 47 be converted to residential planned unit developments if all of the following standards are met: Page 136 of 147