The 25-acre Ambler Asbestos Piles site is located in Ambler, Pennsylvania. The site includes three asbestos-containing waste piles and a series of now-backfilled lagoons. Three asbestos manufacturing companies disposed of asbestos-containing waste on the site for over six decades. These activities contaminated air, soil, sediments and surface water with asbestos. In 1996, EPA deleted the site from the National Priorities List (NPL), having met the cleanup goals established for the site.