Puget Sound Olympia

Municipal Stormwater

Phase II Western Washington Municipal Stormwater Permit

The Phase II permit for western Washington covers at least 80 cities and portions of five counties with an effective date of September 1, 2012. The updated 2013-2018 permit became effective on August 1, 2013.

The EPA phase II regulations went into effect in early 2003 and apply to all regulated small municipal separate storm sewer systems. Ecology first issued the Western Washington Phase II permit in 2007 and modified it in 2009. Ecology reissued it unmodified on August 1, 2012 to be effective through July 31, 2013. At the same time, Ecology also reissued an updated 2013 to 2018 permit on August 1, 2012.

 

2013-2018
Western Washington Phase II
Municipal Stormwater Permit


updated 08/01/13 Errata for the 2013-2018 WWA Phase II
2013-2018
Western Washington Phase II
Municipal Stormwater Permit


Redlined changes are compared to the 2009 Modification of the 2007-2012 permit
Appendix 1. Minimum Technical Requirements Appendix 1. Minimum Technical Requirements
Appendix 2. Total Maximum Daily Load Requirements Appendix 2. Total Maximum Daily Load Requirements
Entirely replaced by 2013-2018 version
Appendix 3. Annual Report Questions for Cities, Towns and Counties Appendix 3. Annual Questions for Cities, Towns and Counties
Entirely replaced by 2013-2018 version
Appendix 4. Annual Report Questions for Secondary Permittees Appendix 4. Annual Report Questions for Secondary Permittees
Appendix 5. Notice of Intent for Coverage Appendix 5. Notice of Intent for Coverage
Entirely replaced by 2013-2018 version
Appendix 6. Street Waste Disposal Appendix 6. Street Waste Disposal
Appendix 7. Determining Construction Site Sediment Damage Potential Appendix 7. Determining Construction Site Sediment Damage Potential
Not changed compared to the 2009 permit modification
Appendix 8. Annual Report Questions for New Permittees Appendix 8. Annual Report Questions for New Permittees
Entirely replaced by 2013-2018 version
Appendix 9. Stormwater Discharge Monitoring Appendix 9. Stormwater Discharge Monitoring
Entirely replaced by 2013-2018 version

Fact Sheet for October 2011 Draft Permit (November 2011)

 

Regional Stormwater Monitoring Program

Western Washington Phase II Timelines Overview - for continuing permittees

New Permittees WWA Phase II Timelines Overview - for new permittees under the 2013-2018 permit

2012 Permits Reissuance Process

Annual Report Forms and Guidance

Phase II Western Washington Municipal Stormwater Permit History