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Ketellapper, V.L.; Williams, L.O.; Bell, R.S.; Cramer, M.H. |
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The control of acid mine drainage at the Summitville Mine Superfund Site |
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1996 |
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Proceedings of the Symposium on the Application of Geophysics to Environmental and Engineering Problems (SAGEEP), vol.1996 |
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303-311 |
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acid mine drainage Colorado Del Norte Colorado gold ores metal ores mines mining mining geology open-pit mining pollutants pollution remediation Rio Grande County Colorado Summitville Mine Superfund sites surface mining United States water quality 22, Environmental geology |
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Abstract |
The Summitville Mine Superfund Site is located about 25 miles south of Del Norte, Colorado, in Rio Grande County. Occurring at an average elevation of 11,500 feet in the San Juan Mountain Range, the mine site is located two miles east of the Continental Divide. Mining at Summitville has occurred since 1870. The mine was most recently operated by Summitville Consolidated Mining Company, Inc. (SCMCI) as an open pit gold mine with extraction by means of a cyanide leaching process. In December of 1992, SCMCI declared bankruptcy and vacated the mine site. At that time, the US Environmental Protection Agency (EPA) took over operations of the water treatment facilities to prevent a catastrophic release of cyanide and metal-laden water from the mine site. Due to high operational costs of water treatment (approximately $50,000 per day), EPA established a goal to minimize active water treatment by reducing or eliminating acid mine drainage (AMD). All of the sources of AMD generation on the mine site were evaluated and prioritized. Of the twelve areas identified as sources of AMD, the Cropsy Waste Pile, the Summitville Dam Impoundment, the Beaver Mud Dump, the Reynolds and Chandler adits, and the Mine Pits were consider to be the most significant contributors to the generation of metal-laden acidic (low pH) water. A two part plan was developed to control AMD from the most significant sources. The first part was initiated immediately to control AMD being released from the Site. This part focused on improving the efficiency of the water treatment facilities and controlling the AMD discharges from the mine drainage adits. The discharges from the adits was accomplished by plugging the Reynolds and Chandler adits. The second part of the plan was aimed at reducing the AMD generated in groundwater and surface water runoff from the mine wastes. A lined and capped repository located in the mine pits for acid generating mining waste and water treatment plant sludge was found to be the most feasible alternative. Beginning in 1993, mining wastes which were the most significant sources of AMD were being excavated and placed in the Mine Pits. In November 1995, all of the waste from these sources had been excavated and placed in the the Mine Pits. This paper discusses EPA's overall approach to stabilize on-site sources sufficiently such that aquatic, agricultural, and drinking water uses in the Alamosa watershed are restored and/or maintained with minimal water treatment. |
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The control of acid mine drainage at the Summitville Mine Superfund Site; GeoRef; English; 2002-027195; Symposium on the Application of geophysics to engineering and environmental problems, Keystone, CO, United States, April 28-May 2, 1996 References: 11; illus. incl. geol. sketch map |
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CBU @ c.wolke @ 16654 |
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334 |
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Author |
Faulkner, B.B.; Skousen, J.G.; Skousen, J.G.; Ziemkiewicz, P.F. |
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Title |
Treatment of acid mine drainage by passive treatment systems |
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Book Chapter |
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1996 |
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Acid mine drainage control and treatment |
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acid mine drainage; acidification; alkalinity; carbonate rocks; chemical reactions; constructed wetlands; controls; depositional environment; ground water; heavy metals; limestone; microorganisms; pollution; sedimentary rocks; substrates; surface water; techniques; United States; water pollution; water treatment; West Virginia; wetlands 22, Environmental geology |
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West Virginia University and the National Mine Land Reclamation Center |
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Morgantown |
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Treatment of acid mine drainage by passive treatment systems; GeoRef; English; 2004-051153; Edition: 2 References: 13; illus. incl. 4 tables |
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CBU @ c.wolke @ 6363 |
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384 |
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Eger, P.; Wagner, J.R.; Kassa, J.R.; Melchert, G.D. |
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Title |
Metal removal in wetland treatment systems |
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1994 |
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Special Publication – United States. Bureau of Mines, Report: BUMINES-SP-06A-94 |
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80-88 |
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acid mine drainage; cobalt; constructed wetlands; copper; flows; geochemistry; hydrology; metals; mines; Minnesota; nickel; peat; pollution; remediation; sediments; sulfides; surface water; United States; waste disposal; water quality; wetlands; zinc 22, Environmental geology |
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Proceedings of the International land reclamation and mine drainage conference and Third international conference on The abatement of acidic drainage; Volume 1 of 4; Mine Drainage |
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Metal removal in wetland treatment systems; GeoRef; English; 2007-045160; International land reclamation and mine drainage conference and Third international conference on The abatement of acidic drainage, Pittsburgh, PA, United States, April 24-29, 1994 References: 21; illus. incl. 2 tables |
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CBU @ c.wolke @ 6570 |
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391 |
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Eger, P.; Melchert, G.; Antonson, D.; Wagner, J. |
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Title |
Magnesium hydroxide as a treatment for acid mine drainage in northern Minnesota |
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1993 |
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Proceedings of the Annual National Meeting – American Society for Surface Mining and Reclamation, vol.10 |
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204-217 |
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acid mine drainage acidification alkaline earth metals chemical properties cobalt copper drainage experimental studies hydroxides laboratory studies lime magnesium magnesium hydroxide metals Minnesota nickel northern Minnesota oxides pH pollution porous materials reagents remediation residence time trace metals United States waste disposal zinc 22, Environmental geology |
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Abstract |
Three alkaline materials were investigated for their suitability to treat acid mine drainage generated by a research facility located at a remote site in northern Minnesota. The materials investigated were hydrated lime, sodium hydroxide, and magnesium hydroxide. All three reagents were successful at raising pH and removing trace metals from the drainage, but the magnesium hydroxide had the added benefit of producing a maximum pH of approximately 9.5, while the other two reagents resulted in pH values of 12 and greater. In addition, the magnesium hydroxide was available as a high solid content slurry (58%) which simplified application and handling, and which produced the lowest volume of sludge of the materials tested. |
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Zamora, B.A.; Connolly, R.E. |
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The challenge of integrating diverse perspectives in reclamation |
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Magnesium hydroxide as a treatment for acid mine drainage in northern Minnesota; GeoRef; English; 2002-028930; 10th annual national meeting of the American Society for Surface Mining and Reclamation, Spokane, WA, United States, May 16, 1993 References: 7; illus. incl. 4 tables |
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CBU @ c.wolke @ 16743 |
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393 |
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Cox, M.R.; Peterson, G.L. |
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The effectiveness of in-situ limestone treatment of acid mine drainage Association of Engineering Geologists program with abstracts, 40th annual meeting; Converging at Cascadia |
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Book Chapter |
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1997 |
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Annual Meeting – Association of Engineering Geologists, vol.40 |
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93 |
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acid mine drainage; buffers; carbonate rocks; Carboniferous; clastic sediments; gravel; in situ; limestone; Mississippian; Missouri; Paleozoic; pollution; sedimentary rocks; sediments; southwestern Missouri; spoils; tailings ponds; United States; water pollution 22, Environmental geology |
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The effectiveness of in-situ limestone treatment of acid mine drainage Association of Engineering Geologists program with abstracts, 40th annual meeting; Converging at Cascadia; GeoRef; English; 2005-076824; Association of Engineering Geologists 40th annual meeting, Portland, OR, United States, Sept. 30-Oct. 4, 1997 |
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CBU @ c.wolke @ 6318 |
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412 |
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