NPDES Stormwater Discharge Permits -Phase I Municipalities (MS4)

Municipal sources that need to obtain permits are classified as either "Phase I" or "Phase II" municipal separate storm sewer systems (MS4s). Phase I MS4s are those with populations greater than 100,000, while regulated Phase II (or "small") MS4s are those municipalities with populations less than 100,000 located within Census Bureau-defined Urbanized Areas. Federal regulations also provide EPA and the states the discretion to require other MS4s outside of Urbanized Areas to apply for a permit.

• Fee tables for municipal NPDES individual permits PDF

MS4 Phase I NPDES Permit Renewal Process

The ODEQ Stormwater Program has created a preliminary draft permit template to assist in the development of the Phase I municipal separate storm sewer system (MS4) National Pollutant Discharge Elimination System (NPDES) individual permits set for reissuance in 2009. The template represents the common format and content that ODEQ is considering for the seven Phase I MS4 NPDES individual permits that will be implemented by 33 jurisdictions. This template is being provided for informational purposes and to encourage public input as part of this informal public process. ODEQ will hold a formal public comment period once a draft permit for the MS4 Phase 1 co-permittees has been developed (projected to be completed in mid-2009).

Informal written comment on this preliminary draft permit template will be accepted by ODEQ through November 14, 2008.  Written comment may be submitted to Benjamin Benninghoff by e-mail or mailed to 811 SW 6th Avenue, Portland, OR 97402. ODEQ will also hold two discussion forums to provide another opportunity to provide input.

  Discussion Forums

• October 29, 2008, 2:00-5:00 PM: 1102 Lincoln Street, Suite 210, Eugene, OR
• November 4, 2008, 2:00-5:00 PM: 811 SW 6th Avenue, EQC A, Portland, OR

  Related Documents

• Preliminary Draft Permit Template Memo PDF
• Preliminary Draft Permit Template Technical Support Document PDF

For more information, please contact Benjamin Benninghoff by e-mail or by phone at (503) 229-5185.

Portland Metro Area Phase I NPDES Municipal Separate Storm Sewer System (MS4) Permits

  Clackamas County, Gresham, Portland, and Clean Water Services
     Modified on reconsideration - Issued July 27, 2005

• Clackamas County, Clackamas County Storm Sewer Service Districts, and Incorporated Cities within the county
  • Permit PDF
  • Supplemental Permit Evaluation Report PDF
     
• City of Gresham, City of Fairview, Multnomah County
  • Permit PDF
  • Supplemental Permit Evaluation Report PDF
     
• City of Portland, Multnomah County, Port of Portland
  • Permit PDF
  • Supplemental Permit Evaluation Report PDF
     
• Clean Water Services (CWS)
  • Permit PDF includes Phase I MS4 requirements
  • Supplemental Permit Evaluation Report PDF
  
  


• Summary of Comments/Response to Comments Received for MS4 Permit Modifications - July 19, 2005 PDF

  Eugene and Salem
     Issued March 2, 2004

• City of Eugene
  • Permit PDF
  • Permit Evaluation Report PDF
     
• City of Salem
  • Permit PDF
  • Permit Evaluation Report PDF
  • Attachment 1 PDF
  • Attachment 2 PDF
     
• Summary of Comments/Response to Comments Received for MS4 Permit Renewals - February 27, 2004 PDF

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