The U.S. Environmental Protection Agency (EPA) and the U.S. Justice Department announced that Arch Coal Inc., the second largest supplier of coal in the U.S., agreed to pay a $4 million penalty for alleged violations of the Clean Water Act in Virginia, West Virginia and Kentucky. Under the settlement, Arch Coal will implement changes to its mining operations in Virginia, West Virginia and Kentucky to ensure compliance with the Clean Water Act. "The measures required by this settlement will prevent pollutants from entering waterways and bring wide-ranging improvements to mining operations in four mining complexes across three states," said Ignacia. S. Moreno, assistant attorney general of the Environment and Natural Resources Division of the Department of Justice. "These changes will mean a healthier environment for local communities and will help ensure Arch Coal's compliance with the Clean Water Act."