Radioactive Material Found in Drainage Ditch, 05/27/2016 Posted on 2016/05/28 by stlradwastelegacy Leave a Comment on Radioactive Material Found in Drainage Ditch, 05/27/2016 KSDK by Jason Aubry Radioactive soil has been found outside the fence of the Westlake Landfill along the edge of its property. http://www.ksdk.com/news/local/radioactive-material-found-in-drainage-ditch-1/218151281