You are here:
RESEARCH STUDIES AT THE GILT EDGE MINE SUPERFUND SITE
Citation:
Lewis*, N M., B. Park, AND J. Trudnowski. RESEARCH STUDIES AT THE GILT EDGE MINE SUPERFUND SITE. Presented at SETAC 22nd Annual Meeting, Baltimore, MD, 11/14/2001.
Description:
A collaborative effort is being implemented at the Gilt Edge Mine Superfund site near Lead, SD. The partnerships involves the Mine Waste Technology Program (MWTP) with the USEPA's NRMRL, Region VIII Superfund program, the DOE, MSE Technology Application, Inc (MSE) and CDM Federal programs Corporation. The site is a non-functioning gold mine which was active for over a hundred years and was closed in 1999 due to bankruptcy and has been proposed for inclusion on the NPL. The mined area contains highly sulfidic ore bodies covering nearly 200 acres. Three distinct areas on the site have been established as major locations to evaluate the testing and research for applicable applications to treat and reduce the impact of acid mine drainage. Data from these efforts will assist the Remedial project Manager to propose the best methods for remediation within the Record of Decision and support decision making in the implementation clean up action stage. The three basic research efforts involve: 1) The anchor hill Pit, which ws mined and intersected with sulfidic materials. The Pit covers approximately 37 acres, is 120 feet deep and contains about 55m gallons of ARD waters. Two technologies will be demonstrated at the Anchor Hill Pit site, a Redox-Mediated Biotransformation (RMB) technology and a Neutra-Mill technology. 2) A multi-cell treatment effort evaluating three different technologis, is being implemented. The test cells are loaded with sulfide-bearing waste rock, in addition, presumptive remedy cells will evaluate the blending of lime. 3) A waste Rock Pit using materaisl from the Ruby Waste Rock Dump will also be evaluated. Approximately 25,000 gallons of water will be placed in the pond to mimic a backfilled pit lake and treated with the RMB technology.