Agenda - Planning Commission - 10/06/2005

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Preliminary P&t Review: &tmmerset ~Y_[eadowx ' September 30, 2005 Page $ of $ Lot Sizes: The minimum lot size for a R-1 Single Family Urban lot is 10,800 square feet. Most of the proposed single-family lots are less than the required lot size (139 of 154 lot). You are requesting the smaller single-family lot sizes as part of the PUD. The single- family lots range fi'om 7,952 sq. ft. to 14,698 sq. ft. with an average lot size between 8900 to 9,000 square feet. Townhomes do not have minimum lot size. From the submitted preliminary plat, it appears that the townhome units will be divided by the Common Interest Community (CIC) plat. Please confirm if this is the case. Lot Dimensions: The minimum lot width for R-1 Single Family lots is 80 Peet as measured at front yard setback. It appears that all of the single-family lots are less than 80 feet wide at building setback. The lots average about 61 feet in width at the front building setback line. You are requesting this smaller lot width as part of the PUD request in order to foster a neighborhood design element as well as to make up for the loss of nearly I4 acres being given to the City for the future Mississippi River Bridge crossing. Under City, Code, there is not a minimum lot width requirement for townhomes. Setbacks: Per Staff direction, you have' prepared a setback exhibit (pg. 17-18 of 35). Setbacks appear to be met for all of the units except fbr two areas (Lot I, Block 3 and Lot 5, Block 6). The required comer side yard setback is 30 feet. The Developer is proposing that that these V,vo lots have a 25-foot comer side yard setback. This deviation from code will be required to have approval as part of the PUD request. Grading and Drainage Plans: The project will require a permit from the Lower Rum River Water Management Organization. The permit will address the storm water calculations as well as the wetland filling and mitigation as noted below. Review of the grading tabulation indicates that all of the lots have the minimum 2 foot vertical separation between the nearest 100 year water level and the lowest floor elevation. This project will also require an N-PDES If permit from the Minnesota Pollution Control Agency. A copy of the permit application must be provided to the city. The permit must be transferred if the property is sold during development or when the contractors working on site change. The typical permit is valid seven days after the application is mailed; however, there are specific conditions under which a longer review period is required. These specific conditions should be investigated during the review process so that construction is not delayed waiting for this permit. The park grading in the northwest comer should be adjusted to move the drainage swale away from the middle of the park. An exhibit must be prepared showing how the park- could be developed with parking, a play field and other amenities. The park area may be more useful to the city if the narrow triangular area north of lots 8 - 11 was'reconfigured by losing a lot and extending the remaining lot lines to the right of way. The drainage and utiliw easements along rear lot lines must cover the area anticipated to be inundated during the i00 year event. Please review the anticipated flow width in drainage swales and adjust the easements accordingly. 160