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City Council Regular Meeting Minutes June 22, 2021 Page 2 1 Mr. Singh reviewed this facility is one of the original stormwater outfall monitoring sites. The 2 system went online in 2016 and baseline data was most useful in designing the capacity of the 3 system. From 2017 – 2000 – MWMO staff performed operations, inspection and maintenance of 4 the facility with collaboration and assistance from the City’s Public Works Staff. From 2020 5 onward the City’s Public Works Staff will take over the operation, inspection and maintenance 6 of the system with collaboration and assistance from MWMO staff. The MWMO staff will 7 continue to collect the monitoring data and secondary treatment chambers will be continually 8 used for testing other stormwater management and treatment systems. 9 10 Mr. Singh provided a yearly precipitation and volume graph and how the load calculation is 11 achieved. Charts showing total suspended solids and total phosphorus were provided. The 12 readings are taken year-round. Mr. Singh summarized with the following: 13 14 • City and MWMO collaboration and team worm is an example in itself. 15 • SART is truly an innovative project. 16 • It is performing well. 17 • MWMO is committed to work together with the City to advance the mission of the City 18 and MWMO. 19 • Project is great investment for the future. 20 21 Mayor Stille thanked Mr. Singh for his presentation. 22 23 Councilmember Randle stated he toured the facility in 2017 with former Mayor Faust. He asked 24 are there any other cities that have similar systems and Mr. Singh stated not at the scale of the St. 25 Anthony system. 26 27 Councilmember Walker asked why there was a spike in 2019. Mr. Singh stated there were three 28 events including a four-inch rain 29 30 Councilmember Webster thanked Mr. Singh for his presentation. She asked about the 31 phosphorus. Mr. Singh stated if one pound of phosphorus was found the entire pond would be 32 covered with algae. 33 34 Councilmember Jenson asked when stormwater goes in what happens to the pollutants. Mr. 35 Singh stated it is a centrifugal system and provides settling. This facility needs to be maintained 36 every two years. The pollutants are trucked to a landfill if deemed not hazardous. 37 Councilmember Jenson stated the City sweeps the streets often and does that have an effect on 38 the stormwater pollutants and Mr. Singh stated it does. The timing and frequency of the street 39 sweeping reduces the pollutants going into the system. 40 41 Mayor Stille stated this is 610 acres that the City is cleaning. The facility is located in 42 Minneapolis. 23,000 pounds of solids are created per year. These pollutants are not going into 43 the Mississippi River. The facility is completely underground. The wateruse facility is used for 44 irrigation for Central Park. Mayor Stille thanked Mr. Singh and Ms. Faust for the presentation. 45 Mr. Singh thanked his staff. 46 2