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2018 Annual Report • Public Works Department • St. Anthony Village, Minnesota <br /> <br /> <br /> <br />8 <br /> <br />III. Engineering <br />The City of St. Anthony utilizes WSB & Associates, Inc. for engineering and consulting services <br />on many of the city’s construction and improvement projects. Engineering activities in a typical <br />year include: street and utility reconstruction; storm water quality and flood improvements; <br />chip sealing of roadways; and other infrastructure related improvements. In 2018 the city <br />completed a number of these infrastructure projects including: <br /> <br />STORMWATER QUALITY IMPROVEMENTS <br />St. Anthony Stormwater Research Facility <br />This project is located just south of the St. Anthony city limits adjacent to CSAH 88 in the City of <br />Minneapolis. This project is a cooperative partnership between the Mississippi Watershed <br />Management Organization (MWMO), Minneapolis and St. Anthony Village. Financing for this <br />project has been provided by the MWMO. <br />The Research Facility began construction in 2015 and is designed to have a primary treatment <br />component consisting of a swirl chamber and flow controls to settle and trap particulate matter, <br />floating trash, and debris from storm water. The facility will also have a secondary treatment <br />designed to remove the soluble pollutants from storm water. The secondary treatment system is <br />a key component of the research site to help determine the effectiveness of available and <br />emerging treatment technologies such as iron sand filtration, filter media with activated <br />alumina, alum flocculation, ionization, ozone, and other future technologies. New technologies <br />can be plugged into the system and monitored for their effectiveness at pollutant removal and <br />cost for operation for treating 600 acres of urban drainage. <br />This project is anticipated to remove 63% of annual Total <br />Suspended Solids (TSS) and 47% of the Total Phosphorus <br />(TP) from stormwater annually. Pollutant reduction goals <br />where targeted based on a detailed flowrate assessment <br />using 5 years of monitoring data collected by the <br />MWMO. A total of 83 million gallons of stormwater was <br />treated by the facility in 2018. <br />