The EPA ordered Molycorp Minerals, LLC, to pay a $27,300 penalty for improper management of hazardous waste at its Riverside County mine and mineral processing facility. The violations were discovered as part of unannounced EPA inspections in October 2012.
EPA testing at the facility determined that leaked or spilled lead-iron filter cake had impacted onsite rainwater, with the potential to contaminate soil along the edge of the holding area. A majority of the impacted rainwater was treated prior to legal disposal into onsite surface impoundments. In addition, EPA investigators found several containers holding hazardous lead filter cake were improperly closed or labeled. Subsequent to the inspection, Molycorp discontinued the operation which generated the lead-iron filter cake.
EPA Directs Rare Earth Mine to Correct Hazardous Waste Violations | 2014-04-21 | Pollution Engineering
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