On June 24, 2015, Region 10 entered into a stipulation of judgment resolving violations of the Clean Water Act by Hecla Limited. Respondent, which operates a Lucky Friday Mine and Mill, discharged pollutants to waters of the U.S. without a permit or authorization under NPDES and exceeded its NPDES permit limits for lead, zinc, and cadmium. The company agreed to pay a penalty of $600,000.