05-12-1997 Council Packet - Laserfiche WebLink

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directed toward the houses. The City of Orono installed a pipe to divert some flow west along North Shore into an existing culvert that flows under North Shore Drive toward Rest Point Lane. The intent is to redirect the flow from Tonka View Lane toward Lake Minnetonka in a location that will reduce the potential for property damage. A detention pond will be required in the northwest quadrant of the intersection to avoid overwhelming the Rest Point Lane drainage system into Lake Minnetonka. These solutions have not been very effective in reducing the possibility of flood damages to the houses at 4500 & 4510 North Shore Drive. Some improvements to CR 19 may have actually increased the potential for serious flood damage. Discussions with the affected property owner in the northwest quadrant of the intersection about a ponding easement have occurred, but an easement has not yet been obtained. Further discussions with the property owner need to occur. In the event that an agreement cannot be reached, it may be necessary to acquire this easement through condemnation proceedings Bonestroo Engineers has prepared a report describing the necessary intersection and storm sewer improvements required to redirect the Tonka View Lane flow toward the Rest Point Lane drainage system. (See attached report) This proposed project will require the reconstruction of the intersection to provide a low point with catch basins to provide for positive redirection of the Tonka View Lane flow into the detention ponding area. The estimated cost of this project is $59,280.00. The completion of this project is necessary to reduce the possibility of further damages to the two houses along North Shore Drive. Previous damages to these two homes total approximately $46,000. Funding for this project is recommended to be provided from the PIR fund. This fund has been established to finance needed storm sewer improvements. The current balance available for storm water projects is $80,000. The City has budgeted $25,000 for storm water projects in 1997. COUNCIL ACTION REQUESTED: Motion to authorize the construction of storm sewer and detention ponding improvements at the intersection of Tonka View Lane and North Shore Drive and the acquisition of a storm water ponding easement for completion of this project at an estimated cost of $59,280.00. Motion to fund this project from the PIR fund, as budgeted.