Agenda - Council - 02/28/1995 - Laserfiche WebLink

Home

Background: The feasibility stray for this project was requested by the City Council at their February 14, 1995 meeting. This s~dy was ordered to determine the cost and the feasibility of improving the drainage in this a which encompass purpose of fundint meeting, City CoU Chapter 444. Und residents in the ~ ea. The area of benefits is contained within the Rum River Drainage District, :s the northern two-thirds of the City. This district has been established for the [ necessary drainage improvements within the district. At the February 14, 1995 nell directed the City to proceed with this project under Minnesota State Statutes er this statute, the City will be required to conduct a public hearing notifying all inage district. Existing Conditions: A natural low lying area, which is identified as Exhibit A of Appendix A, has the potential to affect several outbuildings adjacent to this oxbow wetland and DNR Protected Wetland 659W, the large wetland south offl53rd/155th Avenue N.W. In addition to these outbuildings, the wetland elevation in 19941exceeded the ordinary high water elevation designated by the Department of Natural Resources by one foot, which contributed to flooded road conditions on 153rd/155th Avenue N.W. du~ng the spring of the year. Wetland 659 had at one time in the past been provided with an Outlet to County Ditch #3 by a privately-constructed drainage ditch. County Ditch #3 in turn flows eastward and ultimately empties into the Rum River. This privately- constructed drainage ditch had lost its effectiveness over a period of time due to a combination of factors, including ~he construction of non-culverted roadways, construction of private ponds, and lack of maintenanci~ of the ditch itself. The area was to ha..¥e had minor drainage improvements in 1989 in conjunction with the surfacing of 156th Avenue bl.W. The scope of these 1989 improvements are described in the feasibility study prepared by ~akanson-Anderson dated February, 1989, which is included as Appendix A. The proposed culiert illustrated in Exhibit B of Appendix A had been installed, however, the minor grading refe~trenced in the report did not occur. In addition, 153rd/155th Avenue N.W. was constructed in 1990 through the area. This roadway was provided with culverts to facilitate the natural drainage. During 1994, this, situation was again brought to the City's attention and in anticipation of resolving this problem, the City has had the low lying area surveyed and a drainage plat prepared to facilitate obtaini~ag drainage easements rights for a future drainage project. Such a project will require environmefital permits which will not be obtainable until the City's comprehensive storm drainage plan is u~dated. However, permission has been obtained to allow the scope of the drainage project authorized in 1989 to occur. Description of Improvements: The project propos{gt would be in keeping with the 1989 goal of removing existing impediments to free flowing drain/~ge at an elevation above 868.2 feet. The elements being proposed would include the followi~!g: 1) 2) 3) 4) 5) Lowering a private driveway culvert at 15523 Ramsey Boulevard N.W. Minor excagation of approximately 150 feet in high area north of 153rd/155th Avenue N.W. r Removal of;filled and high area south of 153rd/155th Avenue N.W. on the Stanley Welch property Placement o~ two culverts through berms of created pond at 6960 - 156th Avenue The cleaning of the existing culvert on 157th Lane N.W.