Department of Ecology has mandated that Seattle adopt additional
stormwater control regulations as a condition of the City's
current National Pollution Discharge Elimination System permit for
its stormwater system. To be compliant, the City's regulations
must be equivalent to Ecology's 1992 stormwater manual.
To meet these
requirements, amendments to Seattle’s existing Stormwater, Grading and Drainage Control Code
(Ordinance 119965) were adopted by City Council in a 9-0 vote and
signed into law by the Mayor on June 5, 2000. Most of the new
requirements went into effect on July 5, 2000.
Many of the
amended provisions of the Stormwater, Grading and Drainage Control
Code are being implemented through Directors' Rules that contain
more detailed requirements specifying the methods to be used to
comply with the Code. These new rules will replace most of the
current drainage control Director's Rules and will be administered
jointly by DCLU and Seattle Public Utilities.
In addition to
the draft rules listed above, two rules implementing changes to
the Stormwater, Grading and Drainage Control Code became effective
on July 5, 2000: DR 16-2000 Construction
Stormwater Control Technical Requirements Manual (2.7MB PDF), and
17-2000, Source Control Technical Requirements Manual (1.6MB PDF).