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

Training and Events


  • CLU-IN Webinar Series on Mining Sites - OSRTI's Technology Innovation and Field Services Division launched a CLU-IN webinar series on treatment technologies at mining sites in June 2012. Topics include technology transfer, innovative and ecological approaches to dealing with mining waste, reuse and recovery technologies, and other related focus areas. The webinars are held on a quarterly basis and listed under Upcoming Internet Seminars (below). Archives of past webinars can be found under Archived Internet Seminars, Videos, and Courses.
  • Region 10 Workshops on Hardrock Mine Geochemistry and Hydrology - EPA's Region 10, Office of Research and Development (ORD), and Office of Superfund Remediation and Technology Innovation (OSRTI) hosted a three-part webinar series in February and March 2013 that focused on evaluating the potential for contaminant release from hardrock mine sites. Topics included water chemistry, potential sources of contamination from mine sites, and mitigation and reclamation practices to protect natural resources. Information on webinar archives and resources can be accessed below through Workshops on Hardrock Mine Geochemistry and Hydrology or downloaded (1pg, 222KB).

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Upcoming Internet Seminars | Upcoming Meetings | Archived Internet Seminars, Videos, and Courses

Upcoming Internet Seminars

  • Remedial Action, Remedy Performance, and Long-Term Land Management at the Anaconda Smelter NPL Site
    June 4, 2015, 1:00PM-3:00PM EDT

    Nearly 100 years of copper smelter operations and emissions at the Anaconda Smelter Superfund site left approximately 10,000 acres barren or sparsely vegetated, leaving dust problems and transport of contaminants of concern (COCs) to surface water and groundwater receptors. Early on in the planning process, it was recognized that whole-scale removal of the COCs (arsenic, copper, lead, zinc, and cadmium) was impracticable and infeasible. In situ treatment of soils and wastes, using alkaline amendments to raise pH and immobilize metals, was developed to re-establish vegetation. Methods to assess ecological dysfunction and assign remedial actions, treatability studies and demonstration plots were all developed in the 1980s and 1990s, resulting in remedial actions beginning in the late 1990s. As work is completed, more information was gained from the results. While much of the revegetation work was successful, other areas were not, particularly in those areas close to the former smelters where COC concentrations in soil were much higher.

    EPA identified phytotoxicity concerns in certain areas during the 2010 Five Year Review. EPA and the responsible party collaboratively conducted a study evaluating plant growth in remediated areas while looking at several factors such as COC levels in soil. This evaluation led to development of a total metal index for soil based on the probable success of reclamation grass species. Using this information, EPA and the responsible party revised the existing vegetation management plan for the site to allow for voluntary remediation to achieve higher levels of cleanup to allow unrestrictive land use (e.g., with no long-term O&M requirements). This represents a 'win-win' for the landowner, the responsible party, and the regulatory agencies.

    This webinar will review the results of over 20 years of remedial activities at the Anaconda Smelter site, and how the knowledge gained from this work has been used to develop better cleanup that satisfies all party involved.

    Register for the webinar here.

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    Upcoming Meetings

    • 2015 Joint National Conference of ASMR and ARRI
      June 7-11, 2015 | Lexington, KY

      The 32nd Annual Meeting of American Society of Mining & Reclamation (AMSR) and the 9th Annual Meeting of the Appalachian Regional Reforestation Initiative (ARRI) will be held jointly from June 7 to 11, 2015.

    • 2015 Annual Conference of the Mining History Association
      June 11-14, 2015 | Virginia City, NV

      The 2015 Annual Conference of the Mining History Association (MHA) returns to Virginia City, Nevada, June 11-14, 2015. Virginia City was the location of the first MHA meeting in 1990 as part of the Western History Association conference. For its 25th — Silver — Anniversary, the MHA will return to the Comstock Lode, site of America's first great silver boom, for a series of events, tours, and sessions.

    • 2015 Pennsylvania Abandoned Mine Reclamation Conference
      June 25-26, 2015 | State College, Pennsylvania

      The 2015 Pennsylvania Abandoned Mine Reclamation Conference theme is "Reclaiming Our Communities." Presentations will include those that highlight the diverse and unique partnerships that have made Pennsylvania successful at cleaning up the abandoned mine legacy of water and land pollution; presentations showcasing developments in AMD treatment technologies; case studies on successfully implemented projects; and useful tools for the efforts of the reclamation community.

    • NAAMLP 37th Annual Conference
      September 28-30, 2015 | Santa Fe, New Mexico

      The National Association of Abandoned Mine Land Programs (NAAMLP) is a non-profit organization whose members include 31 States and Tribes conducting abandoned mine reclamation programs under the federal Surface Mining Control and Reclamation Act of 1977. This year's conference is hosted by the New Mexico and Navajo Nation AML Programs. The conference provides a venue to showcase reclamation successes and cutting edge technology on a national scale. Over 300 people from all over the country are expected to attend this conference. Subject matter includes: cutting edge reclamation techniques from across the country; geomorphic reclamation; revegetation research and success stories; hardrock safeguarding methods; bat habitat and preservation; the latest in GPS and GIS technologies; and others.

    • Remediation Technologies Symposium 2015
      October 14-16, 2015 | Alberta, Canada

      The Remediation Technologies Symposium 2015 is a remediation technology transfer event for environmental professionals, encompassing the latest innovations in soil and groundwater remediation. Some topic areas and case studies presented will include in-situ and ex-situ treatment methods, biological and non-biological treatment, thermal desorption, encapsulation, natural attenuation, multi-phase extraction, solar detoxification, electrochemical remediation, pre-treatment considerations, phytoremediation, environmental management, hydrocarbon and salt contamination, stabilization and containment, commercial situations, membrane technology, and unique and challenging locations.

    • SETAC North America 36th Annual Meeting
      November 1-5, 2015 | Salt Lake City, Utah

      SETAC North America is a Geographic Unit of the Society of Environmental Toxicology and Chemistry (SETAC). SETAC North America is dedicated to the use of multidisciplinary approaches to examine the impacts of stressors, chemicals and technology on the environment. Abstracts for its 36th Annual Meeting are currently being accepted. The meeting will feature presentations on: molecular and cellular biology as they relate to environmental toxicology and chemistry; hazard and risk assessment, and environment/human health related issues; contributions to an understanding of ecological risk assessment and environmental hazards, including use and validation of mammalian models and systems; ethical issues related to environmental toxicology and chemistry and risk assessment; and others. Stay tuned for more details.

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    Archived Internet Seminars, Videos, and Courses

     CLU-IN Mining Sites Webinar Series

     Workshops on Hardrock Mine Geochemistry and Hydrology

    EPA's Region 10, ORD, and OSRTI hosted a three-part workshop series on hardrock mine geochemistry and hydrology. The goals included enhancing participants' understanding of the key issues regarding water chemistry predictions, identifying potential sources of contamination from mine sites, and describing practices to mitigate or reclaim facilities to protect natural resources. Presenters included experts from EPA Headquarters, Regions, and ORD; the U.S. Geological Survey; and the U.S. Forest Service. The workshops were open to all agencies, tribes, consultants, and the general public, and are now archived and available for streaming. Supplementary materials and resources provided by the instructors are also available for download below.

    Workshop 1 - Evaluating Water Chemistry Predictions at Hardrock Mine Sites

       » Detailed presentation descriptions and full archive


    Workshop 2 - Mining Influenced Waters - Pathways for Off-Site Releases

       » Detailed presentation descriptions and full archive

    Workshop 3 - Sampling, Monitoring and Remediation at Mine Sites

       » Detailed presentation descriptions and full archive


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