In order to meet the goals set out in Green City, Clean Waters, and satisfy state and federal regulations, GSI is planned, designed, constructed, and maintained in different ways across the city.
PWD Capital Projects use PWD capital funds to build different GSI tools on City-owned property and within the public right-of-way (ROW), including in sidewalks and streets. PWD’s GSI Planning & Design group coordinates these projects with other City agencies, local neighbors, and within PWD to plan, design, build, and maintain these systems.
These partnerships utilize different mechanisms to plan and build GSI that connects public and private areas. These agreements between PWD and private property owners or developers can be site-specific or dependent on PWD goals in certain areas. Most of the time, these will be initiated by PWD (other than the Stormwater Grant Program).
The Department’s Stormwater Regulations require applicable development projects to install stormwater management practices on-site as part of the project’s construction and maintain those systems for long-term functionality. GSI is installed City-wide through development projects to comply with these Regulations.
These incentives are for developers who manage stormwater runoff in vegetated systems or where systems can manage more runoff than what is required to meet the applicable Stormwater Regulations.
- Green Roof Density Bonus (PWD and L&I)
- Overlay Zoning Height Bonuses (PWD and L&I)
- Tax Credits (Revenue)
Rain Check Program (PWD & PHS) for residential property owners interested in managing stormwater runoff.
Stormwater Credits Program for non-residential property owners who have favorable site conditions or built GSI for managing stormwater runoff.