Title 17D City-wide Standards
Chapter 17D.090 Erosion and Sediment Control
Section 17D.090.080 Special Sites
- When the director determines that special site conditions may prevent compliance with the performance standards in SMC 17D.090.180, the director may require a substitute erosion and sediment control plan and/or additional erosion and sediment control measures consistent with the purpose of this chapter and to achieve as nearly as possible the functional equivalent and result of compliance.
-
Special site conditions may include, but are not limited to, the following:
-
Slopes before development that are greater than ten percent.
-
Sites containing highly erosive soils (as mapped on the SCS/NRCS maps).
-
Slope lengths greater than three hundred feet.
-
Ground disturbance of a natural vegetative buffer within fifty feet of a wetland or water body.
-
The development site or development phase will have ground-disturbing activity at any one time of ten thousand square feet or more. Building permits for a single-family dwelling or duplex dwelling are exempt from this size limitation.
-
Project timing is such that ground disturbing activity will take place between October 1 and April 30; or
- The development involves discharge or off-site disposal of dewatering or trench spoils.
Date Passed: Monday, March 8, 2010
Effective Date: Sunday, April 11, 2010
ORD C34565 Section 1