This is a map of sites that have institutional controls or environmental covenants. (64.70 RCW Uniform Environmental Covenants Act)
The Washington Department of Ecology (Toxics Cleanup Program) works to clean up contaminated sites/properties throughout the state of Washington. This data was downloaded from the Integrated Site Information System (ISIS) database and is updated monthly.
This is a link to the ISIS database at Washington Department of Ecology - Toxics Cleanup Program. The ISIS Web reporting portal provides a selection of standard reports for Cleanup Sites, Brownfields, Underground Storage Tanks(UST), Leaking Underground Storage Tanks, and Environmental Covenants Registry.