03-09-2020 Council Packet - Laserfiche WebLink

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3 Shoreland Management Overlay District The parcel is located in the Shoreland Management Overlay District of Reshanau Lake. This lake is classified as a Recreational Development Lake and has an 883.77 OHWL elevation. The required setback from the OHWL is 75 feet for sewered lots and the maximum allowed impervious surface area is 30% of the site area. The proposed OHWL setback is 75 feet and the proposed impervious surface area is 30% of the site area. Both shoreland requirements are met. Floodplain Management The 2015 DFIRM indicates Zone AE floodplain on the parcel. The FEMA base flood elevation (BFE) is 887. The proposed single family home is positioned on the parcel so that it is in the Zone AE floodplain. The lowest elevation of the proposed single family home is 885, which is described as the assumed grade in the crawl space. Per procedures listed under Section 1103.07(2), it has been determined the parcel is in the Flood Fringe district. The FEMA Flood Map Service Center does not indicate that a regulatory floodway is on the site. Due to the absence of a floodway and the presence of the BFE, the parcel is in the Flood Fringe district. Per Section 1103.06(3)(a) Conditional Uses, any structure that is not elevated on fill or flood proofed in accordance with division (2)(a) Standards for flood fringe permitted uses, of this section, requires a conditional use permit. The proposed single family home does not meet the requirements of (2)(a) Standards for flood fringe permitted uses, which requires that all structures, including accessory structures, must be elevated on fill so that the lowest floor, as defined, is at or above the regulatory flood protection elevation. The finished fill elevation for structures must be no lower than one foot below the regulatory flood protection elevation and the fill must extend at the same elevation at least 15 feet beyond the outside limits of the structure. Per Section 1103.06(4)(f), the Standards for Flood Fringe conditional uses: (f) Alternative elevation methods other than the use of fill may be utilized to elevate a structure's lowest floor above the regulatory flood protection elevation. These alternative methods may include the use of stilts, pilings, parallel walls, etc., or above-grade, enclosed areas such as crawl spaces or tuck under garages. The base or floor of an enclosed area shall be considered above-grade and not a structure's basement or lowest floor if: 1. The enclosed area is above-grade on at least one side of the structure; The enclosed area is above-grade on at least one side of the structure as the low floor elevation of the home is above-grade. 2. It is designed to internally flood and is constructed with flood resistant materials; and The crawl space is designed to internally flood through the use of flood vents and will use materials as outlined in the building code.