04-19-2010 Planning Commission Packet

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10-3458 12 April 2010 Page 4 of 6 right-of-way dedication extending to the center of Old Crystal Bay Road. An additional 17 feet of dedication is shown. The City Council will be asked to consider whether a trail easement and/or expansion of the right-of-way along the east boundary of the property are required. Note that Hennepin County's position is that cities should obtain desired right-of-way at the time the property is platted; if this does not occur, then the County will expect City participation in paying for such easements if/when they are acquired by outright purchase or condemnation... Rather than this 17 foot dedication, dedication of a 10-foot wide trail easement along Old Crystal Bay Road, overlapping the required 10-foot wide drainage and utility easement is recommended by the City Engineer. Stormwater and Drainage Improvements The development is subject to the Stormwater and Drainage Trunk Fee of$3,330 per acre x 9.3 total acres (4.0 + 2.6 + 2.7) _ $30,969. Utility Locations and Availability Although located in the Metropolitan Urban Service Area (MUSA), sewer service has not yet been provided to these properties - they are proposed to be served by septic systems and private wells. The Comprehensive Plan in Rural Sewage Treatment Policy No. 18 states "New residential development of (rural area Shoreland properties in the MUSA) at the planned and zoned densities will be provided with municipal sewer at the request of the developer. However, this policy will not preclude development of such areas using fully conforming Individual Sewage Treatment Systems." All septic systems must be located 20' from all property boundaries, 20' from structures, and 75' from the lake and the delineated edge of wetlands. Private wells shall be setback 3' from structures and 50' from septic systems. The applicant should provide preliminary septic designs for the sites shown on the plat drawings. Prior to Final Plat approval these sites must be approved by the City. � Wetlands on Site and/or Impacted According to the submitted survey there are five wetlands on the property: a tiny one on the northern edge of Lot 1 is not shown on the City's wetland map; one along the entire shoreline is shown on the City's wetland map as "Manage 1"; two near the principal structure on Lot 2 which are shown as "Manage 2" on the map; and a larger wetland along Old Crystal Bay Road which is not shown on the City's wetland map. The wetlands were delineated in 2005. The MCWD must approve these delineations or they should be re-evaluated. Once the delineations are approved and the functional assessment conducted to determine the preservation classification, the appropriate buffer widths and setbacks should be indicated on the survey. The City will require a Flowage and Conservation Easement over all wetlands and buffers designated on the site. Rural Oasis, Conservation Design &Woodland Impacts The property has a large expanse of existing woods adjacent to Lake Minnetonka, five wetland bodies and, from Old Crystal Bay Road, an open view-shed into the wooded portions of the property. The Rural Oasis Study and Conservation Design Master Planning process has been formulated to help determine on a case-by-case basis what natural values should be preserved. The purpose of Conservation Design is summarized in the Conservation Design ordinance as follows: The City of Orono as a result of the Rural Oasis Study conducted in 2005 finds that there is an intrinsic link between the natural systems and the valued scenic character that exist throughout