Water Quality Permits

Stormwater runoff from land and impervious areas such as paved streets, parking lots, and building rooftops during rainfall and snow events often contain pollutants that could adversely affect water quality. National Pollutant Discharge Elimination System permits are required for stormwater discharges to surface waters from construction and industrial activities and municipalities if stormwater from rain or snow melt leaves your site through a "point source" and reaches surface waters either directly or through storm drainage.  A point source is a natural or human-made conveyance of water through such things as pipes, culverts, ditches, catch basins, or any other type of channel.

1200-C Construction Stormwater General Permit

Effective Dec. 15, 2020 through Dec. 14, 2025    

• Permit Application

• Construction Stormwater Application and Forms Manual

• Fact Sheet: Applying for the 1200-C Construction Stormwater Permit

• Appendix A

• CMMP Checklist

• Appendix B

• Permit Evaluation Report

• Response to Comments

• Name Change/Transfer

• Termination Form

• Erosion and Sediment Control Plan, Parts I through III Form

• Best Management Practices Manual

• Fact Sheet: Natural Buffer Zones for Construction Projects

• Guidance for 1200-C Construction Stormwater Discharge Permit pH and Turbidity Monitoring Conditions​​

• 1200-C ESCP Template

Presentation: Implementing the Renewed 1200-C NPDES Construction Stormwater General Discharge Permit

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Technical assistance

• Map of 303(d) listed and TMDL-approved waterbodies and tool for determining whether your property is located in the boundaries of these waterbodies
  

• Construction Industry Compliance Assistance website
  Provides concise plain language explanations of the federal environmental regulations that apply to the construction industry and links to state and local regulators. The site is supported by an EPA grant.