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2015 Annual Report • Public Works Department • St. Anthony Village, Minnesota <br /> <br /> <br /> <br />9 <br /> <br />Central Park Bio-Swale <br />The Silver Lake Stormwater Biofiltration System is located on the north end of Central Park in <br />the existing depression near the hockey rink and south of the homes on Skycroft Drive. The <br />system will use a sand and compost filtration bed where stormwater enters the pond, filters <br />through the sand and compost filter, and then a series of pipes underneath the pond collect that <br />water and drain it downstream. The project proposes to remove phosphorus and total <br />suspended sediments that come into the pond from the adjacent park, school and parking lot <br />areas. The system was completed in the spring of 2015. We do expect two years of maintenance <br />to assist in getting our native pollinator species that have been planted in the swale to <br />successfully take root and flourish. <br />The City aims to reduce stormwater pollutants <br />conveyed downstream into Rice Creek County <br />Ditch System 3, which is tributary to Long Lake <br />in the City of New Brighton <br /> <br />Mirror Lake <br /> <br />The Rice Creek Watershed District with the <br />assistance of the City of St. Anthony <br />Village secured a Targeted Watershed <br />Grant from the Minnesota Board of Water and Soil Resources to improve the quality of water in <br />Long Lake. The Environmental Review for this project began in 2015 and construction is <br />anticipated in the winter of 2016/2017. <br />This project proposes to remove several feet of sediment that is very high in phosphorus and to <br />increase the available storage for flood water within Mirror Lake. The project will provide <br />improved pollutant removals, reduce nutrient transport downstream to Long Lake, and reduce <br />downstream local flooding.