09-11-2017 Council Packet - Laserfiche WebLink

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17-3932 August 21, 2017 Page 4 of 8 Surrounding Land Uses Summar Long Lake neighborhoods north of creek Lot sizes: 1/2 acre — 2 -plus acres Creekside In Orono Lot sizes 0.8 acre; Density 1 unit per 2 dry acres South of Luce Line Trail Undeveloped — 2 -acre zoning Orono Golf Course 2 -acre zoning Homes to immediate east along Orono Orchard Rd 2 -acre zoning Orono Oaks 2 -acre zoning Stoneridge Colony (N of Orono Oaks in LL) Lot sizes: 1/2 acre Lot Layout and Lot Standards The proposed layout of the site is dictated by the nature and orientation of the uplands and wetlands. With the proposed road closely following the existing driveway route, homesites along either side of the road in the southerly half of the site are placed midway down steep slopes ranging from 20% to 40%. This would likely result in the need for substantial site re -grading, filling and retaining walls on many lots in order to create usable yard areas. On the flatter slopes at the northerly end of the site, some lots will require additional fill in order to create the depicted walkout configuration. The 2 -acre RR -113 standards include a lot width minimum of 200 feet and minimum yard requirements of 50' front and rear and 30' sides. These standards are intended to create separation between homes to maintain the rural character. The proposed rezoning to RPUD would establish a very different set of required lot area, width and setback standards as follows: Minimum lot area: 15,000 s.f. (1/3 acre) Minimum lot width: 90 feet Minimum lot depth: 125 feet Front setback: 25' Rear setback: Lesser of 40' or 20% of lot depth Interior side setback: 10' Whether developed under RR -1B standards or per RPUD standards, the required setback to the creek is 75 feet. Preliminary plat submittals would have to verify the location of the creek bank. Minimum City -required setback from wetland boundaries is 35', or if MCWD-required wetland buffer exceeds 25', minimum City -required wetland setback is buffer width plus 10 feet. Conceptual house pads depicted under the RPUD proposal range from approximately 5500 s.£ to 8500 s.f. In each case the separation between homes is depicted at 60 feet, minimum. Although the steep hillsides in certain areas have slopes averaging more than 30% and rise more than 25 feet above the floodplain, they are not subject to bluff regulations because those slopes are outside the defined boundaries of the Shoreland Overlay District. Site Grading At this sketch plan stage no grading plans have been submitted. However, the submitted conceptual road layout and house floor elevations suggest that the top 15-20' of the hill would be removed and placed to create the house pads depicted. The impact on existing trees would likely be substantial.