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 municipalities if stormwater from rain or snow melt leaves a 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.
The 1200-CN Stormwater Discharge Permit expired Dec. 15, 2020. DEQ invites the public to provide written comment on the conditions of the proposed 1200-CN Water Quality Permit, known officially as the National Pollutant Discharge Elimination System Stormwater General Discharge Permit. The draft 1200-CN Permit Evaluation Report and Appendices A and B are available for review.
Please submit written comments by 5 p.m. Friday, June 25, 2021. You may submit your comments by mail or email to:
Stormwater Program Coordinator
700 NE Multnomah St., Ste. 600
Portland, OR 97232
1200-CN Permit modification
1200-CN Construction Stormwater General Permit
DEQ has modified the 1200-CN Construction Stormwater General Permit to include the following as 1200-CN jurisdictions, also referred to as Qualified Local Programs:
1200-CA (Government Agencies) Permit Copy
This permit document is for reference purposes only. 1200-CA is no longer available to new applicants. Please use 1200-C instead.