Cleanup of an oil spill along 10 to 15 miles of the North Raccoon River south of Jefferson, Iowa continues as environmental officials warn people to avoid canoeing, fishing, or even hiking in the area.
Pools of thick black smelly oil are apparent in the area after a valve on a storage tank containing used oil malfunctioned Sept. 13 at Krieger's Greenhouse in Jefferson.
The Iowa Department of Natural Resources is working with the U.S. Environmental Protection Agency, the U.S. Fish and Wildlife Service and other agencies on the cleanup.
Some waterfowl have been seen tainted with oil. Bamboo poles with plastic sheeting have been placed over pools water with oil to scare waterfowl away.
The DNR says it's not yet clear how much oil from the 20,000-gallon tank leaked.