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[[file:Municipal stormwater icon.jpg|thumb|300px|alt=icon for MS4 stormwater]]
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The municipal separate storm sewer systems (MS4s) stormwater program is designed to reduce the amount of sediment and pollution that enters surface and ground water from storm sewer systems. Public entities that own or operate an MS4 play a key role in preventing or reducing the negative impacts stormwater runoff has on our valuable water resources.
  
Important Links
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Proper stormwater runoff management in urbanized areas is especially important for restoring and protecting surface waters. Urbanized areas are more likely to have activities that contribute pollutants to stormwater runoff, like applying anti/deicing mixtures to roads; fueling vehicles; grease, oil, and other spills; landscaping; and using pesticides and fertilizers. Urbanized areas have a large amount of impervious surfaces, or surfaces that rain and snowmelt cannot pass through, such as streets, driveways, rooftops, parking lots and sidewalks. Stormwater runoff from these surfaces travels faster and in higher amounts, damaging rivers, streams, and wetlands; destroying aquatic habitats; increasing the amount of pollutants that enter surface waters; and limiting groundwater recharge.
#[[MS4 General Permit]]. This permit went into effect on August 1, 2013.
 
#[[MS4 General Permit Application Information]]
 
#[[Total Maximum Daily Loads (TMDLs)]]
 
#[[MS4 Annual Report]]
 
#[[MS4 fact sheets]]
 
#[[MS4 case studies]]
 
  
Link to MS4 [http://www.pca.state.mn.us/index.php/water/water-types-and-programs/stormwater/municipal-stormwater/municipal-separate-storm-sewer-systems-ms4.html website]
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[[file:Municipal stormwater icon.jpg|thumb|300px|alt=icon for MS4 stormwater]]
 
 
==Overview==
 
[[File:MS4 home page image.png|300px|thumb|alt=image of MS4 home page|<font size=3>Link to MPCA [http://www.pca.state.mn.us/sbiza7c MS4 home page]</font size>]]
 
 
 
According to the 1996 National Water Quality Inventory, stormwater runoff is a leading source of water pollution. Stormwater runoff can harm surface waters such as rivers, lakes, and streams which in turn cause or contribute to water quality standards being exceeded.
 
 
 
Stormwater runoff can change natural hydrologic patterns, accelerate stream flows, destroy aquatic habitats, and elevate pollutant concentrations and loadings. Development substantially increases impervious surfaces thereby increasing runoff from city streets, driveways, parking lots, and sidewalks, on which pollutants from human activities settle.
 
 
 
Common pollutants in runoff include pesticides, fertilizers, oils, metals, pathogens, salt, sediment, litter and other debris are transported via stormwater and discharged - untreated - to water resources through storm sewer systems.
 
 
 
The Stormwater Program for MS4s is designed to reduce the amount of sediment and pollution that enters surface and ground water from storm sewer systems to the maximum extent practicable. Stormwater discharges associated with MS4s are regulated through the use of National Pollutant Discharge Elimination System (NPDES) permits. NPDES permits are legal documents. Through this permit, the owner or operator is required to develop a stormwater pollution prevention program (SWPPP) that incorporates best management practices (BMPs) applicable to their MS4. See the following fact sheet for additional information:
 
 
 
==MS4 staff contact information==
 
<!--[[MS4 staff assignments|Click here to view the list of staff assignments]]
 
<br>This list is subject to change.-->
 
 
 
'''Supervisor/Permit writer:''' <br>
 
Duane Duncanson, 651-757-2323 <br>
 
  
'''Municipal stormwater policy''' <br>
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==MS4 stormwater program overview==
Scott Fox, 651-757-2368 <br>
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*[[What is a municipal separate storm sewer system (MS4)?]]
  
'''MS4 Permit technical assistance and compliance enforcement:''' <br>
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==MS4 stormwater permit==
Cole Landgraf, 651-757-2880 <br>
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*[https://stormwater.pca.state.mn.us/index.php?title=MS4_General_Permit MS4 General Permit]
Megan Handt, 651-757-2843 <br>
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*[https://stormwater.pca.state.mn.us/index.php?title=MS4_Annual_Report MS4 Annual Report]
  
'''MS4 Permit technical assistance, Total Maximum Daily Load''' <br>
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==Minimum Control Measure (MCM) overview and guidance==
Josh Stock, 651-757-2235 <br>
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*[[MCM 1 Public Education and Outreach]]
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*[[MCM 2 Public Participation/Involvement]]
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*[[MCM 3 Illicit Discharge Detection and Elimination]]
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*[[MCM 4 Construction Site Stormwater Control]]
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*[[MCM 5 Post-Construction Stormwater Management]]
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*[[MCM 6 Pollution Prevention/Good Housekeeping]]
  
'''For New MS4s:'''<br>
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==Other technical assistance and guidance==
[[List of new MS4 permittee staff assignments|Click here to view the list of staff assignments]]
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*MS4 fact sheets
<br>This list is subject to change.
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**Visit the [https://www.pca.state.mn.us/water/municipal-stormwater-ms4#guidance-and-bmps-da807a70 MPCA MS4 website] for additional guidance documents and fact sheets
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**[https://stormwater.pca.state.mn.us/index.php?title=MS4_fact_sheets Pollution prevention guidance]
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**[https://www.pca.state.mn.us/sites/default/files/wq-strm1-07.pdf Stormwater and Wetlands - Planning and Evaluation Guidelines]
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**[https://www.pca.state.mn.us/sites/default/files/wq-strm4-28.pdf Untreated Stormwater Runoff to Lakes, Streams, and Wetlands]
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*MS4 case studies
  
==What is an MS4==
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==Total Maximum Daily Loads (TMDLs)==
A municipal separate storm sewer system is a conveyance or system of conveyances (roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, man-made channels, storm drains):
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*[https://stormwater.pca.state.mn.us/index.php?title=Overview_of_TMDLs TMDL Overview]
*Owned or operated by a state, city, town, borough, county, parish, district, association, or other public body (created by or pursuant to State law) having jurisdiction over disposal of sewage, industrial wastes, stormwater, or other wastes, including special districts under State law such as a sewer district, flood control district or drainage districts, or similar entity, or an Indian tribe or an authorized Indian tribal organization, or a designated and approved management agency under section 208 of the Clean Water Act that discharges to waters of the United States;
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*[https://stormwater.pca.state.mn.us/index.php?title=Summary_of_TMDL_requirements_in_stormwater_permits Summary of TMDL requirements in stormwater permits]
*Designed or used for collecting or conveying stormwater;
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*[https://stormwater.pca.state.mn.us/index.php?title=Forms_and_guidance_for_TMDLs Forms and guidance for TMDLs]
*Which is not a combined sewer; and
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*[https://stormwater.pca.state.mn.us/index.php?title=File:2014_AR_Questions.pdf TMDL Annual Report questions]
*Which is not part of a publicly owned treatment works.
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*Visit the [https://www.pca.state.mn.us/water/total-maximum-daily-load-tmdl-projects#draft-pending-projects-990aee4d MPCA TMDL Project page] for information on specific projects across the state
  
==MS4 mapping tool==
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==Other links==
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*[[MS4 staff contact information and staff assignments]]
 
*[http://pca-gis02.pca.state.mn.us/ms4/index.html MS4 mapping tool] is an electronic map tool using Geographic Information Systems (GIS) technology.
 
*[http://pca-gis02.pca.state.mn.us/ms4/index.html MS4 mapping tool] is an electronic map tool using Geographic Information Systems (GIS) technology.
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*[[Pond, lake, and wetland inventory]]

Revision as of 18:08, 23 May 2017

The municipal separate storm sewer systems (MS4s) stormwater program is designed to reduce the amount of sediment and pollution that enters surface and ground water from storm sewer systems. Public entities that own or operate an MS4 play a key role in preventing or reducing the negative impacts stormwater runoff has on our valuable water resources.

Proper stormwater runoff management in urbanized areas is especially important for restoring and protecting surface waters. Urbanized areas are more likely to have activities that contribute pollutants to stormwater runoff, like applying anti/deicing mixtures to roads; fueling vehicles; grease, oil, and other spills; landscaping; and using pesticides and fertilizers. Urbanized areas have a large amount of impervious surfaces, or surfaces that rain and snowmelt cannot pass through, such as streets, driveways, rooftops, parking lots and sidewalks. Stormwater runoff from these surfaces travels faster and in higher amounts, damaging rivers, streams, and wetlands; destroying aquatic habitats; increasing the amount of pollutants that enter surface waters; and limiting groundwater recharge.

icon for MS4 stormwater

MS4 stormwater program overview

MS4 stormwater permit

Minimum Control Measure (MCM) overview and guidance

Other technical assistance and guidance

Total Maximum Daily Loads (TMDLs)

Other links