The Stormwater Pollution Prevention Plan, also known as SWPPP, is a working plan required to maintain the City's MS4 permit. MS4 stands for "Municipal Separate Stormwater Sewer System." This permit must be reauthorized every year and operates on a 5-year permit cycle.
The SWPPP outlines the City's Best Management Practices (BMPs) in six areas:
This is an effective example of how we protect our storm drains. A "bio-log" filled with mulch allows rainwater to pass through, while keeping debris and other polluting materials out. This keeps our storm sewers clean and gives the City a chance to sweep or collect the materials for proper disposal.
The water samples below demonstrate the effectiveness of St. Anthony's Stormwater Research Facility. The dark water (left) is untreated storm water that is currently in the storm water system. The clearer water (right) has been treated in our facility, and shows the quality of water that the City sends to the Mississippi River. Click on the photo to learn more!
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