The company reported the release to the Indiana Department of Environmental Management on Wednesday night.

Portage Mayor John Cannon said his police and fire departments want to close a city-managed lakefront pavilion that many people use to enter Indiana Dunes National Park.

U.S. Steel has reopened most of the Midwest Plant as of Tuesday, Nov. 5.

Storms over Lakes Michigan, Huron and Superior caused beach erosion, flooding and damage to seawalls and roads.

The environmental groups are giving ArcelorMittal, state and federal regulators 60 days to take action or else theyll sue.

This spill comes just weeks after another leak from U.S. Steel and a chemical spill from ArcelorMittal that killed 3,000 fish.

The agency says three consecutive days of tests have been positive, including two days with no detection of cyanide.

There are about 75 pairs of Piping Plovers in the Great Lakes population and most of them nest in Michigan.

Municipalities, parks officials, tourism experts, and environmentalists are asking the state for money to help prevent erosion along some Lake Michigan beaches.

Almost every Lake Michigan beach that was tested in Indiana last year had at least one day where high bacteria levels could have threatened swimmers' health.