U.S. EPA Contaminated Site Cleanup Information (CLU-IN)

U.S. Environmental Protection Agency
U.S. EPA Technology Innovation and Field Services Division
Characterization, Cleanup, and Revitalization of Mining Sites

This website provides site managers, regulatory agencies, consultants, and the general public with information on technologies and resources related to the assessment, characterization, cleanup, and revitalization of current and former (active, closed, and abandoned1) mining sites.

Mining Sites Spotlight

  • The complete archive of the December 17, 2014 webinar on Water Treatment: Iron Mountain Mine and Bunker Hill Mining and Metallurgical Complex Superfund Sites is now available. The webinar focused on approaches to MIW treatment, O&M challenges, and characterization and remediation of MIW treatment issues at two Superfund sites. Visit the CLU-IN Archived Internet Seminars & Podcasts page to view hundreds of other archived internet seminars available for free download and replay.
  • The complete archive of the November 17, 2014 webinar on Mining Remediation and Sustainability is now available. The webinar focused on EPA's efforts to identify lower-maintenance and innovative MIW treatment technologies, work being conducted by the International Network for Acid Prevention (INAP), and efforts undertaken by Barrick Gold Corporation to clean up and implement best industry practices at a mining-impacted river in the Dominican Republic.
  • Siting Renewable Energy on Mine Sites–EPA's RE-Powering America's Lands initiative promotes renewable energy development on current and formerly contaminated lands, landfills and mine sites when such development is aligned with the community's vision for the site. The Agency recently released its second action plan (Action Plan 2.0) for the initiative, which defines goals and outlines activities for the next two years. The RE-Powering America's Lands initiative was launched in 2008.
  • The U.S. EPA Office of Superfund Remediation and Technology Innovation released a new report that highlights select mining-influenced water (MIW) treatment technologies used or piloted as part of remediation efforts at mine sites. The Reference Guide to Treatment Technologies for Mining-Influenced Water Adobe PDF Logo includes short descriptions of treatment technologies and information on the contaminants treated, pre-treatment requirements, long-term maintenance needs, performance, and costs. Sample sites illustrate considerations associated with selecting a technology. Website links and sources for more information on each topic are also included. This fact sheet provides more detail on the information included in the report Adobe PDF Logo and a searchable database of summary information for the technologies discussed in the body of the report, as well as additional technologies or products designed as passive or low cost treatment options, is available.


EPA regulates three general categories of mining activities: hardrock mining, non-metals mining, and coal mining. Regulation of the mining sector involves every major EPA program. For example, EPA's Office of Enforcement and Compliance Assurance handles issues related to management of mineral processing wastes, while EPA Regional offices use statutory authority granted by the Clean Water Act to regulate coal, hardrock and non-metals mining activities through the National Pollutant Discharge Elimination System (NPDES) permits program. The EPA Superfund Abandoned Mine Lands (AML) Program identifies ways to protect human health and the environment using regulatory and non-regulatory approaches to address contamination at abandoned mine sites. This may include Superfund remediation, voluntary cleanups, emergency responses, and cleanups leading to redevelopment and land revitalization. To coordinate the risk reduction and cleanup of abandoned mine lands, the AML Program works directly with other federal agencies, tribes, states, communities, and mine operators on research, characterization, cleanup, and redevelopment-related activities. The AML Program is coordinated through EPA's National Mining Team and Abandoned Mine Lands Team, which together serve as a focal point for coordinating and facilitating national technical, policy and process issues with stakeholders on abandoned/inactive mine research, characterization, cleanup and redevelopment activities.

Other federal government agencies involved in the management of mining sites include the Bureau of Land Management's (BLM) (Mineral Materials Program and Abandoned Mine Lands Program), the U.S. Forest Service (Minerals and Geology Management), the National Park Service (NPS) (Mining Operations Management and Abandoned Mineral Lands Program), and the Office of Surface Mining Reclamation and Enforcement (OSM) (coal mine regulation and abandoned mine land reclamation). Federal agencies also have access to the Superfund program for removal or remedial actions. The Superfund program can be used when a significant environmental or public health threat is imminent, or where a site poses an environmental threat and no potentially responsible party can be found. Because ownership of lands on which mining sites exist ranges widely, management of these sites is a complex issue. State mining agency websites may contain more in-depth information on the number of mining sites and the total area they occupy within individual states. Links to state mining programs can be found through the U.S. Department of Labor's Mine Safety and Health Administration resource area.

1 Information on the types of abandoned mining sites that exist across the United States and site ownership issues can be found through the U.S. Government's Abandoned Mine Lands Portal.

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