Tacoma Smelter Plume: Why are some parks putting up “Dirt Alert” signs?

By Amy Hargrove, Soil Safety Program Coordinator

Earlier this month, Burien Parks & Recreation put up signs like this one at Dottie Harper Park. Signs will be posted at other parks in the coming months. We’ve heard some questions and concerns about the signs, so I’d like to provide a little bit more information…


Contamination has been in the soil for decades--why put signs up now?
In the