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

U.S. Environmental Protection Agency
U.S. EPA Technology Innovation and Field Services Division

Mining Webinar Series: Eagle Mine Superfund Site Case Study

Sponsored by: U.S. EPA, Office of Superfund Remediation and Technology Innovation, Technology Innovation and Field Services Division

Archived: Tuesday, January 21, 2020
View Archive

The Eagle Mine Superfund Site near Minturn, Colorado is a prime example of successful EPA and State collaboration overseeing a Potentially Responsible Party conducting cleanup of an abandoned mining and milling complex. Listed on the National Priorities List in 1986, the Site began in 1983 when the State filed for natural resource damages against a PRP pursuant to CERCLA. This case study will present on the Site's technical background, robust remedy, complex regulatory framework and complicated enforcement history. Eagle Mine is a good example of a site nearing completion in the Superfund process; this case study will showcase considerations for a site approaching the finish line.

Items covered will include:

  • Transition from an NPDES permit to a CERCLA Permit Equivalent Document
  • Nexus of CERCLA and Clean Water Act
  • Impacts of an unenforceable Consent Decree
  • Site strategy for completion

Accessibility, Recording, and Content Disclaimer

Rehabilitation Act Notice for Reasonable Accommodation

It is EPA's policy to make reasonable accommodation to persons with disabilities wishing to participate in the agency's programs and activities, pursuant to the Rehabilitation Act of 1973, 29 U.S.C. 791. Any request for accommodation should be made to Lynette Vanderpool at 434-233-4184 or, preferably one week or more in advance of the webinar, so that EPA will have sufficient time to process the request. EPA would welcome specific recommendations from requestors specifying the nature or type of accommodation needed. Please note that CLU-IN provides both alternate phone call-in options and closed captioning for all webinars, and requests for these specific accommodations are not necessary.

Webinar Recording

By participating in this CLU-IN webinar, you automatically agree to authorize recording of audio and visual content presented during this live event and consent to subsequent use of this recording in the public domain by the U.S. Environmental Protection Agency. This recording may include questions, comments and poll responses provided by you during the live event in addition to your name, voice, image or likeness. This recording will be made available after the conclusion of the live event as part of the CLU-IN webinar archives, and will remain available indefinitely. If you do not wish to consent to the recording, please do not join the live event, and contact Jean Balent at 202-566-0832 or to discuss your concerns.

Content Disclaimer

This webinar is intended solely to provide information to the public. The views and opinions expressed as part of this webinar do not necessarily state or reflect those of the U.S. Environmental Protection Agency. It is not intended, nor can it be relied upon, to create any rights enforceable by any party in litigation with the United States, or to endorse the use of products or services provided by specific vendors. With respect to this webinar, neither the United States Government nor any of their employees, makes any warranty, express or implied, including the warranties of merchantability and fitness for a particular purpose, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights.


A photograph of Michele MahoneyMichele Mahoney, U.S. EPA Technology Innovation and Field Services Division ( or 703-603-9057)
Michele Mahoney is a Soil Scientist working on issues related to remediation and reuse of contaminated sites within EPA's Superfund program. In order to support practitioners, she researches and reports on knowledge related to treatment technologies for mining sites, use of soil amendments for remediation and redevelopment/reuse, ecological revitalization, ecosystem services, phytotechnologies, and urban gardening. Michele develops and delivers training for the world-renown EPA Clean-Up Information Network (, particularly a Mining Webinar Series, and topics related to Superfund Redevelopment, Ecological Revitalization, Ecosystem Services, and Phytotechnologies. She also creates and manages content development for the EcoTools and Mining pages on

Michele has worked with EPA for over 20 years. Prior to her current responsibilities, Michele served the Agency as the lead for food waste composting issues and as an environmental fate and ecological risk assessor for pesticide registration. Michele also has experience as a Contractor for EPA and a Laboratory and Field Researcher.

Michele earned a M.S. in Soil Science from the Washington State University, and a B.S. in Agronomy & Environmental Science from Delaware Valley University.

A photograph of Jamie MillerJamie Miller, U.S. EPA Region 8 Superfund Division ( or 303-312-6519)
Jamie Miller is a Remedial Project Manager in the Superfund Division in the EPA Region 8 office in Denver, Colorado. Jamie manages the Eagle Mine Superfund Site and participates as a team member on the Colorado Smelter Superfund Site. Her work load consists solely of remediation focused on mining and smelting related contamination. Prior to joining EPA in 2015, Jamie spent 6 years working as an EPA contractor on the Superfund Technical Assessment and Response Team. She graduated from the University of Central Arkansas in 2006 with a B.S. in Environmental Science, with a focus on Planning and Administration. In her free time, Jamie enjoys running and reading historical fiction!

A photograph of Kayleen CastelliKayleen Castelli, U.S. EPA Region 8 Superfund Division Legal Enforcement Branch ( or 303-312-6174)
Kayleen joined EPA Region 8 in 2016 and is currently Senior Assistant Regional Counsel in the CERCLA enforcement section of the Legal Enforcement Branch. Kayleen's practice includes both CERCLA counseling and enforcement work. Her practice also focuses on complex corporate succession, bankruptcy, insurance, reuse, and redevelopment in the context of CERCLA. Before EPA, she clerked for a judge on the Colorado Court of Appeals. She graduated from the Indiana University Kelley School of Business in 2012 with high distinction and from Indiana University Maurer School of Law in 2015 magna cum laude. When she is not working, you can find her rock climbing and mountain biking. She also loves training her German Shepherd Dog, Ranger.


A photograph of Jean BalentJean Balent, U.S. EPA Technology Innovation and Field Services Division ( or 202-566-0832)
Ms Balent is on the staff of the EPA's Technology Innovation and Field Services Division where she has worked to collect and disseminate hazardous waste remediation and characterization information since 2003. Ms Balent manages the Clean Up Information Network website and actively supports online communication and collaboration resources available to EPA. She formerly worked with the US Army Corps of Engineers Environmental Engineering Division in the Buffalo District. Ms Balent was also a member of the SUNY-Buffalo Groundwater Research Group where she constructed and tested large scale models of groundwater flow. Ms Balent has also conducted research relating to the Great Lakes, environmental remediation, and brownfields re-development. She holds a Bachelor's degree in environmental engineering from SUNY-Buffalo and a Master's degree in Information Technology from AIU.

Top of Page

If you have a suggested topic or idea for a future CLU-IN internet seminar, please contact:

Jean Balent
Technology Integration and Information Branch

PH: 202-566-0832 | Email:
Michael Adam
Technology Integration and Information Branch

PH: 202-566-0875 | Email: