The Environmental Protection Agency reached an agreement with Dow Chemical Co. to cleanup three dioxin-contaminated areas near the chemical company''s Midland, Mich., plant, the Associated Press reports. The cleanup will include three segments of the Tittabawassee River between Imerman Park in Saginaw Township and Midland''s Tridge. Financial cost details weren''t disclosed. Contaminated sediment and soil removed during cleanup will be disposed of in the Salzburg Road Landfill, which is located on Dow''s property. The sediment and soil removal is expected to be completed by the end of the year. Dioxins are a family of chemicals produced by combustion or other industrial processes. Some dioxins have been linked to cancer, reproductive problems and weakened immune systems. Dow has previously acknowledged having polluted the Tittabawassee River floodplain with dioxins for many years.