These permits establish conditions for discharges of municipal stormwater systems to Waters of the State. There are two types of municipal stormwater permits; general permits for small municipal separate storm sewer systems (MS4s) and individual permits for larger municipal systems. The permits require a Stormwater Pollution Prevention Program (SWPPP) to be developed, implemented, and enforced by the permittee. The SWPPPs are public noticed and approved by the MPCA. Other requirements include system maintenance, pollution prevention and good housekeeping for municipal operations, and record keeping.
Refer to the NPDES/SDS MS4 General Permit
The individual permits for Minneapolis and St Paul are effective January 21, 2011 - January 21, 2016.
Six minimum control measures are included in an MS4 SWPPP. MS4s must identify and implement appropriate best management practices (BMPs) for each of the control measures, and provide measurable goals for each BMP. The SWPPP must include for all BMPs, annual schedules or procedures for implementation, and where appropriate, must be implemented or established in ordinance, plan or policy by dates specified in the permit or a schedule established by the MPCA Commissioner. The six minimum control measures are:
1) Public Education and Outreach
2) Public Participation/Involvement
3) Illicit Discharge Detection and Elimination
4) Construction Site Stormwater Runoff Control
5) Post Construction Stormwater Management in New Development and Redevelopment
6) Pollution Prevention/Good Housekeeping for Municipal Operations
NPDES/SDS MS4 General Permit
Municipal Stormwater Program Overview
BMP Summary Sheets
Annual Report Form
Forms, fact sheets, and other resources are available at Stormwater Program for Municipal Separate Storm Sewer Systems (MS4)
Application fee - $400
No annual fee
For general permits, up to five years depending on when an application is submitted within the five year permit term. Individual permits are typically issued for a five year term.