Agenda - Council - 11/14/2023 - Laserfiche WebLink

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1 7. The appearance of open space areas, including topography, vegetation, and 2 allowable uses, must be preserved by use of restrictive deed covenants,permanent 3 easements, public dedication and acceptance, or other equally effective and 4 permanent means; and 5 8. The shore impact zone, based on normal structure setbacks, must be included as 6 open space. For residential PUDs, at least 50 percent of the shore impact zone area 7 of existing developments or at least 70 percent of the shore impact zone area of 8 new developments must be preserved in its natural or existing state. For 9 commercial PUDs, at least 50 percent of the shore impact zone must be preserved 10 in its natural state. 11 C. Erosion control and stormwater management. Erosion control and stormwater 12 management plans must be developed and the PUD must: 13 1. Be designed, and the construction managed, to minimize the likelihood of serious 14 erosion occurring either during or after construction. This must be accomplished 15 by limiting the amount and length of time of bare ground exposure. Temporary 16 ground covers, sediment entrapment facilities, vegetated buffer strips, or other 17 appropriate techniques must be used to minimize erosion impacts on surface water 18 features. Erosion control plans approved by a soil and water conservation district 19 may be required if project size and site physical characteristics warrant; and 20 2. Be designed and constructed to effectively manage reasonably expected quantities 21 and qualities of stormwater runoff. Impervious surface coverage within any tier 22 must not exceed 25 percent of the tier area, except that for commercial PUDs 35 23 percent impervious surface coverage may be allowed in the first tier of general 24 development lakes with an approved stormwater management plan and 25 consistency with this subdivision. 26 d. Centralization and design of facilities. Centralization and design of facilities and 27 structures must be done according to the following standards: 28 1. Planned unit developments must be connected to publicly owned water supply and 29 sewer systems, if available. On-site water supply and sewage treatment systems 30 must be centralized and designed and installed to meet or exceed applicable 31 standards or rules of the state department of health and this subdivision. On-site 32 sewage treatment systems must be located on the most suitable areas of the 33 development, and sufficient lawn area free of limiting factors must be provided for 34 a replacement soil treatment system for each sewage system; 35 2. Dwelling units or sites must be clustered into one or more groups and located on 36 suitable areas of the development. They must be designed and located to meet or 37 exceed the following dimensional standards for the relevant shoreland 38 classification: setback from the ordinary high water level, elevation above the 39 surface water features, and maximum height. Setbacks from the ordinary high 40 water level must be increased in accordance with this subdivision for developments 41 with density increases; 42 3. Shore recreation facilities, including but not limited to swimming areas,docks,and 43 watercraft mooring areas and launching ramps, must be centralized and located in 44 areas suitable for them. Evaluation of suitability must include consideration of land 45 slope, water depth, vegetation, soils, depth to groundwater and bedrock, or other 46 relevant factors.The number of spaces provided for continuous beaching,mooring, 47 or docking of watercraft must not exceed one for each allowable dwelling unit or 48 site in the first tier (notwithstanding existing mooring sites in an existing 49 commercially used harbor). Launching ramp facilities, including a small dock for 50 loading and unloading equipment, may be provided for use by occupants of 51 dwelling units or sites located in other tiers; Page 131 of 141