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Puget Sound Olympia

Municipal Stormwater

2012 Municipal Stormwater General Permit Reissuance

On August 1, 2012, the Washington State Department of Ecology (Ecology) reissued three general National Pollutant Discharge Elimination System (NPDES) municipal stormwater permits:

At the direction of 2012 legislation, Ecology reissued both Phase II permits without modification for a period of one (Western WA) and two (Eastern WA) years. Ecology also reissued the Phase I permit for a period of one year with limited changes.

In the news

Washington steps up fight against polluted runoff (Seattle Times editorial, August 8, 2012)

State was right to tailor water laws for east side (Tri City Herald editorial, August 10, 2012)

In addition, Ecology reissued updated permits for the permit terms below:

What's the Latest?

Ecology awards $2.2 million to help local stormwater programs (March 1, 2012)

Past Work on Permit Reissuance

For more than 3 years, Washington State Department of Ecology (Ecology) has been working with interested parties and advisory groups in Western Washington to develop permit requirements. Ecology developed and managed advisory groups for input on monitoring and low impact development requirements. For more on these groups go to:

In Eastern Washington, Ecology initiated discussions in 2011 with permittees and interested parties to gather input on future permit monitoring and LID requirements.

In addition to the early work of the Western Washington advisory groups, Ecology held eight public Listening Sessions around the state from August to October 2010.

Municipal stormwater permit reissuance schedule

The schedule below provides a history of Ecology’s municipal stormwater permit reissuance process.

Ecology Notification of Possible New Permittees for Evaluation   April 25, 2011 
Informal Public Comment Period on Preliminary Draft Permit Language for LID & Monitoring  May 16 – June 17, 2011 
Ecology Guidance and Forms for Duty to Reapply  August 19, 2011 
Ecology Reviews Comments from Informal Public Comment Period  June 20, 2011 – October 19, 2011 
Ecology Issues Draft Permit for Formal Public Comment   October 19, 2011 - February 3, 2012 
Ecology Holds Workshops and Public Hearings   December 1, 2011 – February 3, 2012 
Ecology Reviews Comments from Formal Public Comment Period  February 3, 2012 – June 2012 
Ecology Issues Final Permits and Response to Comments   August 1, 2012 

Permit Effective Dates

1&2-year permits:  September 1, 2012 
5-year Phase I permit:  August 1, 2013 
5-year Western WA Phase II:  August 1, 2013 
5-year Eastern WA Phase II:  August 1, 2014 

Contacts and Listserv Information