05-12-1997 Council Minutes - Laserfiche WebLink

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MINUTES OF THE REGULAR ORONO CITY COUNCIL MEETING HELD ON MAY 12t 1997 0 ( #12 - CoRd 19/Tonkaview Drainage Situation - Continued) Bessessen said the direction of the water changed at some point. The area had been dug out. There is currently a 2' culvert. Cook said this currently reflects the flow. Jabbour asked why the stump placed there is not removed. Cook said it works well. Gappa said erosion would occur if it was removed. Kelley asked how much rain the pond would hold. Cook said it would hold a 100 -year storm. The flow would be pushed to the pond which would be 120'x80' and 3' deep. Kelley asked if it would be dry most of the time. Cook estimated the pond would be wet for about two hours after a 100 -year storm. On a five -year storm basis, it would be wet for about one hour. Kelley was informed that it would catch the water flowing down Tonkaview. Kelley asked if it was correct that the housing development caused a change to the water drainage. Cook said some change probably occurred. Jabbour asked if the slope of the County road could be changed. Cook said it would add to the problem. Sawicki said they had hired a hydrologist to study the area, who was conclusive in stating is that the development caused the source of the runoff. Kelley said the housing development is mandated not to cause change to drainage patterns. Kelley questioned whether the residents could be held responsible for causing this change. Jabbour noted that the housing development had received City approval. is Jabbour questioned what effect the ponding would have on the property where it is to be located. He was concerned that it would affect the conformity of the property. Gappa said the property owner was concerned that the pond would affect her garden area. The lot was said to be one acre in size in the one acre zoning. The creation of the pond would deem this property non - conforming. Gappa suggested an easement be taken. Goetten said this would place a burden on the property owner if any improvements were proposed. Jabbour asked about the other cornering property. Bessessen said it was owned by his father -in -law. Jabbour suggested he speak with him regarding using the property for ponding. Bessessen noted that the proposed ponding area had a natural depression. There is also a retaining wall in place that had been erected by Hennepin County. Sawicki said she spoke with the concerned neighbor. She voiced concern with losing control of the property if she granted an easement as well as possible loss of trees and creation of a large pond. 17