(Link) Ebey's Prairie Bioswale  edit

(Whidbey, website)    http://www.islandcountymrc.org/Projects/Marine-Habitats/Phytoremediation-Bioswale.aspx
On Ebey's Prairie on central Whidbey Island we are partnering with the Town of Coupeville, Ecolotree, the National Park Service and Whidbey Island Conservation District in a pilot project to divert storm water runoff into a bioswale on the edge of town. The bioswale will percolate this runoff through a mass of roots and soil, which, we hope, will remove pollutants before this water reaches Puget Sound.

---