12/12/2007 P&Z Packet - Laserfiche WebLink

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• Growth Management, Units/Year: The table attached to this report shows the status of the staging plans for final platting of new residential units. The new unit of Vaughn's 1st Addition will not be platted until 2008 and will fit within that year's allotment. Preliminary Plat Shoreland Ordinance: The subject site is adjacent to Wards Lake, which is considered a Natural Environment Lake and therefore is subject to the more restrictive Shoreland Ordinance Requirements for Lot Dimensions, Impervious Surface Coverage, and Setbacks. The lot depicted on the submitted plats meets the minimum upland lot size of 20,000 square feet, but the required setback from the Ordinary High Water Level of Wards Lake is not being met. In fact the Shore Impact Zone, which is set at 75 feet for Wards Lake is being encroached upon as well. The Shoreland Ordinance does not allow for an encroachment into the Shore Impact Zone, and therefore a Variance is required to allow the proposal to continue. However, the plans do not seem to be depicting the correct information. Staff is again asking the engineer to revise the plans to clearly identify the correct Ordinary High Water Level, Wetland Delineation, Flood Plain, and the Shore Impact Zone. Staff is conceding that a residential use of the site should and will be allowed, however the configuration proposed by the developer does not minimize the impact on the Shore Impact Zone, and potentially creates the need for another variance to allow any future development of Outlot A. Staff is requiring that a plan be submitted to prove that Outlot A can be developed in the future without the need of a major variance and minimizing the impact on the Shore Impact Zone. This would most likely need to be on the property adjacent to Birch Street, since the plans submitted clearly show that a major variance to the OHWL setback would be needed for placement of a 2nd structure at Ruffed Grouse. Floodplain Ordinance: A portion of the subject site is located within the floodplain as defined by the Rice Creek Watershed at an elevation of 887.6. The proposal for Lot 1 includes placing the building pad within the flood plain, resulting in 200 cubic yards of fill over a 3,017 square foot area of the flood plain. However, the Floodplain Ordinance also requires that any structure placed in the floodplain maintain 15 feet surrounding the structure at a level no more than one foot below the regulatory flood protection elevation for the area. This is not currently indicated on the plan, and will result in an increase in the amount and area of floodplain fill required. These plans will need to be revised to show compliance with this requirement. Additionally, a Conditional Use Permit is required by the Floodplain Ordinance for placing a principle structure within a floodplain. This will need to be properly noticed and a public hearing will need to be held. Setbacks: The submitted plans depict all required setbacks, except the 150 foot setback from the Ordinary High Water Line as required by the Shoreland Ordinance. This setback is measured to any improvement attached to the single family dwelling, including decks and /or patios. This would mean that any and all improvements would be required to stay within the building pad shown on the submitted plans. Impervious Surface Coverage: The lot will be required to comply with the 30% Impervious Surface Coverage requirement of the Shoreland Ordinance as they develop, the • current building pad and drive would put the site at approximately 14.73 %.