10-11-2006 Council Agenda - Laserfiche WebLink

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Memo -ILI-RING -11SSO(I1IT -{S RUC HON TO: Mayor Blesener & Members of the City Council FROM: Lee Elfering, City Engineer DATE: October 6, 2006 RE: Resources for Child Caring Drainage Issue The City Council previously approved two storm water improvements around the Resources for Child Caring (RCC) property to improve drainage. Those improvements were installation of a valley gutter across their south driveway and improvement of the drainage swale along the south side of their property. Both improvements were contingent on RCC agreeing to abandon the south five feet of their parking lot and grant the City an easement over the area for improving the capacity of the swale. RCC indicated that they have several deliveries from various size trucks which utilize the back lot for access to the loading dock area of the building. In review of the parking movements for the largest vehicle dimensions that RCC provided, the loss of 5 feet of their lot would result in an inability to utilize some of the parking stalls directly adjacent to the loading dock area during deliveries. They expressed that they utilize all of the building parking and at times some of the adjacent properties stalls and therefore did not believe that the 5 -feet could be granted. Proposed Improvement Due to the inability to improve the swale without impacting the buildings use, we have reviewed other options to address the drainage issues in the area. Of the options reviewed the most feasible option is to extend the existing storm sewer east of the building through the RCC parking lot to provide a direct connection of the drainage from Yorkton Avenue and the storm water pond to the southwest. This would prevent the addition of that drainage to the swale. In addition the valley gutter that was originally proposed for the south RCC driveway would also be constructed. The estimated construction cost is approximately $60,000.00 for the improvements. A sheet outlining the route of the storm sewer and the proposed improvements is attached. The existing swale will need to remain in place to provide drainage for the RCC parking lot. The pipe is not proposed to be installed in the existing easement area due to cover problems caused by the swale and the steep bank to the south of the swale. 10062 Randers Court NE, Blaine, MN 55449 — Ph: (763) 780 -0450 — Fax: (763) 780 -0452 C: \Documents and Settings \kathy.glanzenLocal Settings \Temporary interact Files \OLK2D \Memo - 100606 - CC.doc