11-12-2019 Council Packet - Laserfiche WebLink

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8 Reshanau Lake is an impaired, recreational development lake and efforts to protect and improve the natural resource should be implemented with any development. A native vegetated shoreline buffer will be required as a stormwater management best management practice (BMP) to minimize runoff pollutants from entering the lake. The buffer will also help stabilize the shoreline, reduce erosion and support aquatic plants and wildlife. An average 20 foot wide but no less than 10 foot minimum wide native vegetated buffer zone extending from the shoreline shall be installed and maintained on both Lot 1 and Lot 2. As recommended by the Planning & Zoning Board, a 20 foot wide access opening to the lake is allowed. A landscape plan detailing the buffer plantings and maintenance shall be submitted. Environmental Assessment Worksheet (EAW) An Environmental Assessment Worksheet is not mandated. The two (2) unattached residential units are under the 250 unattached unit threshold required for a mandatory EAW. Wetlands A Wetland Delineation Report was completed by Jacobson Environmental, PLLC on August 2, 2019. A WCA Notice of Decision approving the wetland delineation was issued by RCWD on September 16, 2019. Three (3) basins were delineated. Basin 1 is 0.016 acres and Basin 2 is 0.024 acres. Both are located within the rear yard of Lot 1. Basin 3 is 0.008 acres and is adjacent to the Reshanau Lake shoreline on both Lot 1 and Lot 2. No wetland impacts are proposed. Per RCWD, Rule F is not triggered; therefore, no WMC wetland buffers are required. A drainage and utility easement 10 feet above the delineated wetland is provided. Floodplain The 2015 DFIRM indicates Zone AE floodplain on both Lot 1 and Lot 2. The FEMA base flood elevation (BFE) is 887. Per Sheet 6, CLOMR-F Exhibit, the applicant is proposing 38 cy of floodplain fill and 39 cy of compensatory storage. The applicant shall obtain a CLOMR-F from FEMA to revise the floodplain map. It should be noted that any future proposed structures such as accessory structures shall meet the floodplain ordinance requirements. Shoreland Management Overlay The general purpose and intent of the Shoreland Management Overlay ordinance is to protect public waters. Per the ordinance Policy statement, the uncontrolled use of shorelands of the city affects the public health, safety and general welfare not only by contributing to pollution of public waters, but also by impairing the local tax base. Therefore, it is in the best interests of the public health, safety and welfare to provide for the wise subdivision, use and development of shorelands of public waters. As discussed, the site is located in a Shoreland Management Overlay district of Reshanau Lake. This lake is a classified as a Recreational Development Lake and has an 883.5 OHWL elevation. The required OHWL setback for both Lot 1 and Lot 2 is 75 feet for sewered lots. The proposed setback on Lot 1 is 87.6 feet and is compliant. The current setback from the existing house on Lot 2 is 73.5 feet. The house is considered legal non-conforming.