February 27, 2013, 2:00 PM - 4:00 PM, EST (19:00-21:00 GMT)

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Theme: Mining Influenced Waters - Pathways for Off-Site Releases

Lecture 1 – Surface and Subsurface Hydrology at Hardrock Mine Sites
Presenter: Connie Travers (Stratus Consulting)
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Download Slides: 9.6MB/Color PDF | 6.9MB/B&W PDF
Specific topics covered during this lecture include:

1. Hydrological characterization at mine sites
   
   • Basic hydrological properties
     
   • Recharge/flowpath/discharge.
     
   • Baseline/pre-mining water balance
     
   • Recharge/flowpath/discharge
   
   
2. Impacts of mine facilities and operations on hydrological processes and pathways – leading into Lecture 2
   
   • Waste rock, heap leach pads, tailings impoundments, open pits, underground workings
     
   • Dewatering and water management (process system)
     
   • Changes in recharge/flowpath/discharge

Lecture 2 – Pathways of Contaminant Transport from Mining Areas
Presenter: Mike Wireman (U.S. EPA Region 8)
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Download Slides: 33.6MB/Color PDF | 12.5MB/B&W PDF
The presentation will discuss pathways and processes that result in contaminant releases from active and historic mine sites.
Specific topics covered during this lecture include:

1. Fate and transport of contaminants from mine related facilities
   
   • Conceptual hydrogeologic model
     
   • Geologic controls
     
   • Geochemical controls
   
   
2. Environmental characterization of contaminant transport pathways
   
   • Geology / ore body
     
   • Water levels / flow
     
   • Mass loading
     
   • Hydrologic tracing
     
   • Isotopic data
     
   • Geochemical modeling
     
   • EMMA

Lecture 3 – Mining on National Forest System Land
Presenter: Robert Thompson (U.S. Forest Service)
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Download Slides: 161KB/PPT | 1.3MB/Color PDF | 1.3MB/B&W PDF
The presentation will discuss the legal authority, approval process, and agency involvement in mining projects on National Forest System (NFS) lands. Mitigation, monitoring, adaptive management, and reclamation of mining sites on NFS lands will also be discussed.

• Connie Travers, Stratus Consulting (ctravers@stratusconsulting.com)
• Mike Wireman, U.S. EPA Region 8 (wireman.mike@epa.gov)
• Robert Thompson, U.S. Forest Service (rjthompson@fs.fed.us)

• Jean Balent, U.S. EPA Technology Innovation and Field Services Division (balent.jean@epa.gov)
• Michele Mahoney, U.S. EPA Technology Innovation and Field Services Division (mahoney.michele@epa.gov)

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Press the "Go to Seminar" button to join the Adobe^® Connect™ meeting room. Please be at this location at the beginning of the seminar.