SAUGET, Ill. (AP) - Illinois and federal agencies are assessing pollution on 380 acres in three southwestern Illinois suburbs.
Workers are also trying to determine whether companies that once owned the properties should pay the tens of millions of dollars in cleanup costs.
The Belleville News-Democrat says the 11 sites in Sauget, Cahokia and East St. Louis were used for decades for waste disposal.
Federal efforts to clean parts of the properties have been ongoing since at least 1995. The land is being proposed for a national priorities cleanup list, which may draw federal money.
Tom Heavisides works with the Illinois Department of Natural Resources. He says officials have been addressing human health risks involving the sites. And the state says the pollution may be responsible for deformed animals and fish kills.