01-22-1991 Planning Packet - Laserfiche WebLink

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/i j< Zoning File #1616 January 16, 1991 Page 2 of 3 During the sketch plan review of the subdivision at your November 19, 1990 meeting. Members advised the applicant that if the only variance sought by applicants was the encroachment of the wetland, that they would have no problem in approving the proposed 2-lot plat. As already noted in the review of Application #1615, the current proposal does not require variances to the standards of the RR-IB zoning district. The driveway is designed at a 14' width. The City Engineer has asked that 3' shoulders be installed on each side of the roadway for a 20' total width. Note to compensate for the filling, the drainage easement or conservation and flowage ease ment will be taken over 55,000 s.f. Cook feels the developers have provided adequate area to mitigate the encroachment. In preliminary discussions with Ron Quanbeck, storm water detention will not be required based on the assumed amount of impervious surfacing to be installed as a result of the 2 lot development. Two 18" culverts are proposed to be installed under the driveway to insure surface water flow is not restricted based on 100 year storm data. Applicants' engineer advises that if storm water detention is deemed necessary in the future, that there is adequate area on Lot 1 and Lot 2 for this purpose. It may be necessary to place some kind of restriction on these areas for some future date. We v/ould ask for further comment by the City Engineer. Cook also concurs that there is no need for mitigation excavation at this time. The wetlands is classified as a Type 6 and Type 7, similar to the wetlands observed in the Alan Carlson subdivision off of Watertown Road. At three site inspections, staff was never able to find standing water in any area of the designated wetland. The wetland is not a DNR protected wetlands. The Corp of Engineers has been asked to review the proposal. As already noted in the subdivision application, the Corp will grant a national permit because the fill area shall be limited to 7,900 s.f. The Corp limits national permits to 10,000 s.f. The land alteration application has been filed with the Minnehaha Creek Watershed District. Staff would like to take the opportunity to compliment Mr. Anderson with his preparation of the materials for this review. Glenn Cook has recommended approval subject to the road being expanded to include the 3' shoulders on either side, and also recommends that the fire marshall review the road for access purposes. Staff would ask Mr. Anderson to provide more detail on the berming proposed within Lot 1. Mr. Hopkins has advised that the berm will be minimal in height as the installation of the house will involve the cutting into the bank. Planning Commission members should be aware that the fencing proposed along U.S. Highway 12 will be at a 3*i' height and will meet the standards of the fence code.