2010-06-09 CC Mtg. Handout - Laserfiche WebLink

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2335 Highway 36 W St. Paul, MN 55113 Tel 651- 636 -4600 Fax 651- 636 -1311 www.bonestroo.com June 9, 2010 Dallas Larson Administrator City of Centerville 1880 Main Street Centerville, MN 55038 -9794 Re: Downtown Storm Water Reclamation Project City of Centerville Bonestroo File No.: 000616 - 08167 -0 Dear Dallas: Bonestroo At your request, we have prepared the following scope and fee proposal for the design and bidding of the Downtown Storm Water Reclamation Project. BACKGROUND In May of 2008, we were authorized, by the City Council, to perform some preliminary design work along with other pre - project tasks. Since that time, we have explored a number of alternatives for treating the storm water which will be generated as part of the downtown redevelopment. We have also assisted the City in obtaining several grants to help pay for these improvements. The ultimate project will consist of a network of storm sewer inlets and collection pipes feeding a large diameter storm sewer pipe extending from the Downtown area to an existing ditch running westward along the south edge of Laurie LaMotte Memorial Park. The schematic route of this pipe is shown on the attached Figure 5. We will then utilize the existing pond in the Rice Creek Chain of Lakes Regional Park Reserve as a reservoir for storm water to be used for irrigation of the LaMotte balifields. The pond would hold enough water to provide the 16 acre site with one inch of water per week for approximately three weeks without rain. A back -up system would be provided to add water to the pond during extended drought periods. This system could be either a small well or hydrant lead from the existing water system. The irrigation system will consist of a pumping facility near the pond and a forcemain leading back to the ballfield area where it will feed a network of irrigation lines. Due to the pace of redevelopment in the downtown area, the decision was made to scale back the 2010 project to just the irrigation system and pond modifications. Having met with the Rice Creek Watershed District, the Board of Water and Soil Resources and Anoka County Parks officials to gain their consensus on the revised project scope, we are now ready to move forward with design and construction of the project should the City Council choose to do so.