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12/6/2023 <br />2 <br />Municipal <br />Separate Storm <br />Sewer System <br />(MS4) Permit <br />• Conveyance or system of <br />conveyances- roads, catch basins, <br />curbs, ditches, etc. <br />• Who is regulated? <br />o Cities, Watershed Districts, Colleges, <br />MnDOT <br />3 <br />What’s the Problem? <br />According to the Environmental <br />Protection Agency, stormwater runoff <br />is the leading source of water pollution <br />in the United States. <br />4 <br />169