In May 2014, we published the Draft 2015 City of Seattle Stormwater Manual, Volumes 1 through 5, and the appendices. They are available for your review on the project documents page.
Originally, we anticipated making all the changes at one time in 2015, as we had stated in handouts and at various public meetings throughout 2014. However, the Washington State Department of Ecology (Ecology) was delayed in sending their comments to us on our draft proposal. We received over 150 separate comments from Ecology in February 2015. Therefore, due to the delay, we are postponing most of our proposed Stormwater Code changes until January 2016.
In the meantime, in April 2015, the City Council and Mayor approved to revise three sections of the 2009 Stormwater Code (SMC 22.800-22.808). Effective by May 24, 2015. These changes are not the focus of Ecology's review. The changes are:
We posted an addendum to the Stormwater Code and Rule Update SEPA Environmental Checklist on June 25, 2015. We identified a need to propose related revisions to the 2012 Seattle Building Code, the 2012 Seattle Residential Code, and those Seattle Municipal Code titles regulating land use and grading to incorporate the new ecology requirements. These proposed revisions relate largely to the timing of how the Stormwater Code and Rule Update would be imposed (generally referred to as "applicability.") In addition, we identified two additional proposed revisions in the Stormwater Code and Rule Update.
Draft documents for the 2016 City of Seattle Stormwater Code and Manual (submitted to Washington State Department of Ecology April 23, 2014):
The following documents outline the April 2014 summary of changes we made to the code and manual:
Public Meeting: June 3, 2014