CYPRUS SIERRITA AND ITS PARENT COMPANY VIOLATED THE CLEAN WATER ACT BY DISCHARGING COPPER, CYANIDE, AND ACIDIC WASTE ON SEVEN OCCASIONS WITHOUT A NPDES PERMIT, RESULTING IN 138 DAYS OF VIOLATION. IN ADDITION, CYPRUS SIERRITA FAILED TO CONDUCT ADEQUATE MONITORING, AS REQUESTED IN A SECTION 308 LETTER, RESULTING IN AN ADDITIONAL 30 DAYS OF VIOLATION.