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Department Approval �-. Item Description: BACKGROUND l�'�, Jy REQUEST FOR COUNCIL ACTION Date: 12/21/09 Item No.: 7.k City Manager Approval Approve Cost Share Agreement With Capitol Region Watershed District for Stormwater Pumping Station Capacity Upgrades Capitol Region Watershed District has approached the City of Roseville, Falcon Heights, and St. Paul, as well as Ramsey County to partner in upgrading the pumping capacity of the storm water station for Gottfried Pit on Larpenter Avenue. This project will double the discharge capacity of the existing station and replace the 50 year old force main that conveys the water to the St. Paul system. The St. Paul system was upgraded with their street reconstruction project in 2005 to accommodate these future improvements. This project was identified in the District's study of flooding of the Como Lake Watershed in 2003. The Gottfried Pit capacity has been exceeded a number of times, most recently in 2005, causing significant flooding of Larpenter Avenue and surrounding properties. We have been requiring additional runoff reductions in this watershed as a part of land use applications to reduce the potential for flooding as well. Large projects such as the Rainbow Foods redevelopment made significant reduction to the peak flow to this ponding area. Additional pumping capacities to the extent the downstream facilities in St. Paul can accommodate are recommended to minimize the risk of property damage in the future. The cost sharing of this project is based on contributory area after the total project costs are reduced by a $294,000 contribution from the watershed district. Their contribution is a one time opportunity to utilize some excess grant funds for other improvements in the Como Lake watershed. � We have attached a cooperative agreement that has been drafted by the watershed district and reviewed � by our City Attorney to partner on this project. � POLICY OBJECTIVE , It is the city's policy to maintain a storm water conveyance system that is of adequate design and , minimizes the likelihood of property damage due to flooding. � FINANCIAL IMPACTS , The City's cost participation is based on the acres of storm water discharging into the Gottfried Pit � storm water pond. The total cost of this project is estimated at $508,626. The City of Roseville's � participation is capped at $141,983. Additional value engineering of this project could reduce our share . considerably. This cost would be paid for out of the storm water infrastructure fund capital improvements. Adequate funds are available in this fund. Page 1 of 2