The Lower Ecorse Creek site is located on the south bank of the Ecorse River in Wyandotte, Michigan. The site is a former wetland that was filled in with waste material for development purposes. A city park is located on part of the site. Soils were contaminated with cyanide, arsenic and polyaromatic hydrocarbons (PAHs). Following cleanup, EPA took the site off the Superfund program�s National Priorities List (NPL) in 2005. Operation and maintenance activities and monitoring are ongoing.