1 / 9

NRMRL Mining Activities

NRMRL Mining Activities. Rocky Mountain Regional HSRC Briefing October 9, 2002. Trish Erickson, Acting ALD-Waste 513.569.7406 erickson.patricia@epa.gov. Relevant Activities. Mining-Specific EPA/DOE Mine Waste Technology Program SITE Demonstrations Research

apria
Download Presentation

NRMRL Mining Activities

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. NRMRL Mining Activities Rocky Mountain Regional HSRC Briefing October 9, 2002 Trish Erickson, Acting ALD-Waste 513.569.7406 erickson.patricia@epa.gov

  2. Relevant Activities • Mining-Specific • EPA/DOE Mine Waste Technology Program • SITE Demonstrations • Research • Technical Assistance & Technology Transfer • Mining-Related • Watershed Protection & Restoration • Contaminated Sediments

  3. EPA/DOE Mine Waste Technology Program • At-Source Controls • mine sealing, in-situ SRB reactors • Water Treatment Options • passive and low-maintenance • As, CN-, Hg, NO3, Se • Revegetation/Stabilization • Technology Transfer

  4. EPA/DOE Mine Waste Technology Program • FY02 Proposal Solicitation Emphasis • source control for prevention of metal release and acid rock drainage • Treatments for low flows in remote settings • Major Meetings • 2002 Hardrock Mining Conference • 2003 Mining Impacts on Tribal Lands Roger Wilmoth 513.569.7509 www.epa.gov/ORD/NRMRL/std/mtb

  5. SITE Demonstrations • Current Projects • Leviathan Mine • lime lagoons, constructed wetlands, biphasic lime treatment • Completed Projects • Constructed Wetlands (Colorado DPHE) • Clay-Based Grouting Annette Gatchett 513.569.7697 www.epa.gov/ORD/NRMRL/SITE

  6. Research: Permeable Reactive Barrier for Arsenic Treatment • Pilot-scale Fe(0) PRB at East Helena smelter site • Performance over time • Mechanisms • Impact on site hydrogeochemistry • Longevity • Associated lab studies Rick Wilkin, 580.436.8874 Bob Puls, 580.436.8543

  7. Research: Penn MineMicrobiology and Geochemistry Overview: Acid drainage (Cu, Zn, Cd) from the Penn Mine discharges into Camanche Reservoir via ground water and surface water runoff. Remediation efforts have targeted above ground contamination. This project investigates subsurface geochemical and microbiological processes that impact subsurface contaminant fluxes to the reservoir. Rick Wilkin, 580.436.8874 with Charles Alpers, USGS

  8. Technical Assistance & Tech Transfer • Site-specific assistance to many mine sites • Site characterization • Remedy screening/prioritization • Remedy selection • Performance evaluation • Technology transfer • Documents • Meetings Ed Bates 513.569.7774 www.epa.gov/ttbnrmrl

  9. Technical Support • Semi-passive water treatments • Rock-filled bioreactors at Rio Tinto, Leviathan • Conventional bioreactor at Lutrell • Oxidation/precipitation at Opportunity Ponds • Alternative alkali selection at Leviathan

More Related