Water Quality > Stormwater > Municipal Stormwater > Permits and Permittees > Phase II Western Washington Municipal Stormwater Permit

Phase II Western Washington Municipal Stormwater Permit

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 at legislative direction to be effective through July 31, 2013. After an extensive public process, Ecology also reissued the updated 2013 to 2018 permit on August 1, 2012.

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 will become effective on August 1, 2013.

 

2012-2013 Western Washington Phase II Municipal Stormwater Permit	2013-2018 Western Washington Phase II Municipal Stormwater Permit 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 1. Minimum Technical Requirements
Appendix 2. Total Maximum Daily Load 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 Form for Cities, Towns and Counties	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 Form for Secondary Permittees	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	Appendix 5. Notice of Intent for Coverage Entirely replaced by 2013-2018 version
Appendix 6. Street Waste Disposal	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	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) Appendix A: Response to Comments for Permit Effective September 1, 2012 (August 1, 2012) August 1, 2012 State Register Notice	Fact Sheet for October 2011 Draft Permit (November 2011) Appendix A: Response to Comments for Permit Effective August 1, 2013 (August 1, 2012) Part I – Introduction and Response to Comments on More Than One Permit Part III – Response to Comments on WWA Phase II Permit Part V – Response to Comments on Western Washington Appendix I and Low Impact Development

 

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