May. 14, 2015 Washington Department of Ecology --NEWS

Announcing the release of draft guidance on a Stormwater Control Transfer Program for the Western Washington Municipal Stormwater Permits

Department of Ecology is releasing draft guidance on a Stormwater Control Transfer Program for public comment on May 14, 2015. The public comment period will last 60 days and end on July 14, 2015. This draft guidance applies to the Phase I and Western Washington Phase II Municipal Stormwater Permits.

The document is available here:

Ecology prefers comments to be submitted by e-mail to:

Submit written, hard copy comments to:
Municipal Permit Comments
Washington State Department of Ecology
PO Box 47600
Olympia, WA 98504-7600

The draft guidance document lays out features of an alternative program (a Stormwater Control Transfer Program) that Western Washington State municipal stormwater Permittees (Permittees) can implement to satisfy permit requirements associated with flow control, runoff treatment, and/or low impact development triggered at new and redevelopment sites. This stormwater management approach directs rehabilitation efforts to watersheds within a jurisdiction (referred to as priority watersheds) where they will provide more immediate environmental benefit. Permittees establishing a Stormwater Control Transfer Program that includes out-of-basin transfers must seek Department of Ecology (Ecology) approval of their alternative program (through Appendix 1, Section 7 of the Western Washington Municipal Stormwater Permits).

Ecology’s approval of a Stormwater Control Transfer Program will be made public and can be appealed.

Ecology does not propose relaxing the requirements, but allowing local governments to use a strategy to shift stormwater improvements triggered by the existing requirements to higher priority watersheds. The anticipated advantage of this type of program is that efforts will focus on priority watersheds at a rate greater than the default site-by-site application of the municipal permits’ minimum requirements.


If you have questions, please contact Anne Dettelbach at or 425-649-7093.