The deal, the largest ever made between the Justice Department and a single actor, resolves civil claims against the company filed by the federal government as well as five states bordering the Gulf of Mexico, the site of the April 2010 incident.

“Building on prior actions against BP and its subsidiaries by the Department of Justice, this historic resolution is a strong and fitting response to the worst environmental disaster in American history,” U.S. Attorney General Loretta Lynch said in a statement.

The Deepwater Horizon spill released 3 million gallons of oil into the Gulf, which eventually covered over 1,300 miles of coastline in Texas, Louisiana, Alabama, Florida and Mississippi, taking a severe environmental and economic toll on the region. 11 workers were also killed in the explosion that triggered the spill.

The settlement will help pay for additional cleanup and restoration. Up to $1 billion will go to local governments, $4.9 billion will be paid to five states that border the Gulf, a $5.5 billion penalty will be paid for violating the Clean Water Act, and $7.1 billion will be paid for natural resources damages claims under the Oil Pollution Act.

The government is opening the settlement up to public comment for two months before it’s taken before a federal judge for final approval.