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City of Arden Hills Planning Commission Meeting for April 4, 2018 P:\Planning\Planning Cases\2018\PC 18-001 - 3246 New Brighton Road - Preliminary & Final Plat, Comprehensive Plan Amendment, Variance, CUP\Memos_Reports_18-001 Page 5 of 17 New Brighton Road is a Ramsey County roadway and the County has reviewed the proposed plans. The proposed plat meets the County’s Major Street plan requirement for right-of-way along New Brighton Road. Any disturbance occurring in the right-of-way will require a County permit. B. Easements City subdivision regulations require at a minimum a 12-foot wide utility and drainage easements dedicated to the City along the right-of-way and centered on common lot lines. The Preliminary Plat includes 12-foot utility and drainage easements that are centered on the common lots lines throughout the development and 12-foot easements along the New Brighton Road right-of-way and the rear property lines. The proposed utility and drainage easements meet the City’s minimum requirements. Where a subdivision is traversed by a watercourse, a drainage easement is required to be dedicated substantially conforming to the lines of the watercourse. There is a landlocked pond located on the easterly half of the site. The applicant has provided a drainage easement around the perimeter of the pond that extends out a minimum of 16.5 feet from the edge of the pond. A small stormwater collection pond is proposed at the northwest corner of the landlocked pond on the property. This pond would allow for the collection of runoff from the site and discharge into the adjacent larger pond. A drainage and utility easement has been provided around the perimeter of this pond as well. Based on discussions with Rice Creek Watershed District (RCWD), the proposed pond is not required to satisfy the watershed district’s stormwater management requirements and a Maintenance Agreement would not be required for this feature. C. Lots Location and Size All lots are required to abut by their full frontage on a public street and meet the minimum lot dimensions required by the Zoning Code. All four lots have full frontage on a public street. The applicant has requested a variance to allow each of the four lots to have a width of 81.75 feet, which is less than the minimum width of 85 feet required for the R-2 District. However, as shown further on, all four lots significantly exceed the minimum lot area and depth requirements. Watercourse Lots abutting upon a wetland are required to have additional width or depth to assure building sites are not subject to flooding. All building areas should be located outside the natural feature and a minimum of two feet above the 100-year flood elevation. The drainage plan provided by the applicant indicates that the peak elevation calculated for a 100-year back to back event would be 914.45. The single-family residential dwellings are each proposed to have a low floor elevation of 918.16 feet.