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2015 Annual Report • Public Works Department • St. Anthony Village, Minnesota <br /> <br /> <br /> <br />8 <br /> <br /> <br />Salo Park Alum System <br />The Silver Lake Stormwater Treatment System will improve the Salo Park stormwater ponds <br />ability to remove phosphorus. This underground water treatment system has been constructed <br />north of 39th Avenue and on the west side of the north pond. This work was completed in the <br />late summer of 2015 and is expected to be at full operation in 2016. <br />The City aims to reduce the yearly phosphorous runoff into Silver Lake by 26 pounds. The City <br />will accomplish this reduction by drawing water from the Salo Ponds and injecting a chemical <br />that will bind to phosphorous in the water, causing the phosphorous to settle out in large <br />underground tanks. The cleaned water will then be sent back into Salo Ponds making the water <br />that flows from Salo Ponds to Silver Lake much cleaner. <br />The current phosphorous removal efficiency of Salo Ponds is about 54%, and the new system is <br />anticipated to increase this <br />efficiency by up to 90%. <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />