The pig waste lagoon at Hopkins Ridge Farms in Iroquois County, Ill., a hog confinement operation where 8,000 pigs are raised for market each year. A July 2012 spill there polluted more than 20 miles of Beaver Creek, wiping out 148,283 fish and 17,563 freshwater mussels, according to reports from state biologists. (Photo by Stacey Wescott/Chicago Tribune/TNS) *** Please Use Credit from Credit Field ***