King County scientists created a soil mix that removes a toxic chemical from tire dust, potentially saving coho salmon.

Bioretention basins are depressions in the landscape that ... Eventually, the water seeps down into the first soil layer that is made of mulch to provide organic materials to the plants living in the ...

The New Hanover County Soil and Water Conservation District ... to provide additional treatment for stormwater runoff. A new bioretention cell and bioswale will reduce the volume of runoff during ...