2017 Public Works Department Annual Report

Home Browse Search

2017 Annual Report • Public Works Department • St. Anthony Village, Minnesota 7 chip sealing of roadways; and other infrastructure related improvements. In 2017 the city completed a number of these infrastructure projects including: III. Stormwater Quality Improvements St. Anthony Stormwater Research Facility This project is located just south of the St. Anthony City limits adjacent to CSAH 88 in the City of Minneapolis. This project is a cooperative partnership between the Mississippi Watershed Management Organization (MWMO), Minneapolis and St. Anthony Village. Financing for this project has been provided by the MWMO. The Research Facility began construction in 2015 and is designed to have a primary treatment component consisting of a swirl chamber and flow controls to settle and trap particulate matter, floating trash, and debris from stormwater. The facility will also have a secondary treatment designed to remove the soluble pollutants from stormwater. The secondary treatment system is a key component of the research site to help determine the effectiveness of available and emerging treatment technologies such as iron sand filtration, filter media with activated alumina, alum flocculation, ionization, ozone, and other future technologies. New technologies can be plugged into the system and monitored for their effectiveness at pollutant removal and cost for operation for treating 600 acres of urban drainage. This project is anticipated to remove 63% of annual Total Suspended Solids (TSS) and 47% of the Total Phosphorus (TP) from stormwater annually. Pollutant reduction goals where targeted based on a detailed flowrate assessment using 5 years of monitoring data collected by the MWMO. Construction of the project was completed in 2016 with full start up in the spring of 2017.