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. . <br /> ' "� <br /> ° <br /> ( b) Stormwater control facilities shall be designed and <br /> constructed to effectively handle runoff from a 100 year <br /> storm event without severe erosion , and limit the rate <br /> of surface water runoff to replicate pre-development <br /> conditions. Impervious surface coverage in any tier <br /> must not exceed 25 percent of the tier area (except that <br /> 35 percent impervious surface coverage may be allowed <br /> for commercial PUD' s in the first tier of general <br /> development lakes with an approved stormwater management <br /> plan and compliance with the vegetation requirements of <br /> Section 320-51 ) . <br /> Subd . G . CENTRALIZATION AND DESIGN OF FACILITIES <br /> 1 . Where feasible, planned unit developments shall utilize <br /> municipal sewer and water services. On-site sewer and water <br /> services, where necessary , must be centralized and designed <br /> to meet the requirements of Chapter 263, and any special <br /> requirements of the Minnesota Department of Health and MPCA, <br />� <br /> as well as the required setbacks specified in Section 320-49 <br /> of this ordinance. <br /> 2 . Dwelling units shall be clustered into one or more groups <br /> and located on sites suitable for their development. <br /> 3. Shore recreation facilities, including , but not limited <br /> to, swimming areas, docks, boat launching ramps, and <br /> watercraft mooring areas shall be centralized and located in <br /> areas which do not substantially conflict with public use of 1 <br /> public waters and limit (so far as possible) their visual <br /> impact from the water body , and provide for the public' s <br /> safety . Consideration in siting such facilities shall be <br /> given to land slope, water depth, vegetation , soils, depth to <br /> ground water and bedrock , and other relevant factors. <br /> Subd . H. LAND USE CONVERSIONS <br /> 1 . Existing resorts or other land uses may be converted into <br /> a residential planned unit development under the following <br /> conditions: <br /> (a) The proposed land use is in conformance with the <br /> current zoning classification for the property . <br /> ( b) The proposed PUD shall meet the requirements of the <br /> city ' s subdivision and shoreland ordinances in so far as <br /> possible, given the existing use of the property at the <br /> time of the application for a PUD. Any existing <br /> structures, facilities or land uses which will remain <br /> under the PUD shall be counted against the allowable <br /> land uses under city ordinance. <br /> ( c) Deficiencies regarding water supply , sewage <br /> treatment, structure color , impervious surface coverage, <br /> open space, and shore recreation facilities shall be <br /> corrected as part of the conversion or as specified in <br /> the conditional use permit . <br /> 70 <br />